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we - online.com ? march 2015 wrth elektronik eisos gmbh & co. kg - data sheet - rev 1.0 1 / 31 wpmdh11 5 2401 / 17101 2402 magi3c power module v drm - variable step down regulator module 6 - 42v / 1 .5 a / 5 - 24 v output description the vdrm series of the mag i3c power module family provide a fully integrated dc - dc power supply including the buck switching regulator and inductor in a package. the wpmdh1152401 offers high efficiency and delivers up to 1.5 a of output current. it operates from 6v input voltage up to 42v. it is designed for fast transient response. it is available in an innovative industrial high power density to263 - 7ep ( 10.16 x 13.77 x 4.57mm) package that enhances thermal performance and allows for hand or machine soldering. the v drm regulators have an on - board protection circuitry to guard against thermal overstress and electrical damage featuring t hermal shut - down, over - current, short - circuit, overvoltage and under - voltage protections. typical applications ? point - of - load dc - dc applications from 12v and 24v industrial rail s ? industrial, test & measurement, medical applications ? system power supplies ? dsps, fpgas, mcus and mpus supply ? i/o interface power supply features ? peak efficiency up to 9 7 % ? current capability up to 1 .5 a ? wide input voltage range: 6v to 42 v ? output voltage range: 5v to 24 v ? maximum output power: 36 w ? integrated shielded inductor solution for quick time to market and ease of use ? single exposed pad for b est - in - class thermal performance ? low output voltage ripple ? under voltage lockout protection (uvlo) ? programmable soft - st art ? adjustable switching frequency ? thermal shut down , inrush current and output short circuit p rotection ? operating ambient temp. range up to 10 5 c ? operating junction t emp . range: - 40 to 125c ? rohs & reach compliant ? mold compound ul 94 class v0 (flammability testing) certified ? complies with en 55022 class b radiated and conducted emissions standard typical circuit diagram r o n c i n r o n v i n e n p g n d s s f b v o u t m o d u l e r f b t r f b b c s s c f f c o u t a g n d 1 2 3 e p 5 4 6 7 v i n v o u t t o 2 6 3 - 7 e p
we - online.com wrth elektronik eisos gmbh & co. kg - data sheet - rev 1.0 2 / 31 wpmdh11 5 2401 / 17101 2402 magi3c power module v drm - variable step down regulator module package top view to263 - 7ep pin description pin # symbol type pin description 1 v in power the supply input pin is a terminal for an unregulated input voltage source. it is required to place the input capacitor nearby the vin pin and pgnd. 2 r on i nput an external resistor from r on to v in pin sets the on - time and frequency of the application. the value r ange of the resistor is from 25k? to 124 k?. 3 en i nput the enable input p in is internally connected to the precision enable comparator and the rising threshold is at 1.18v. maximum recommended input level is 6.5v. 4 agnd supply the analog g round pin is the reference point for all stated voltages a nd must be connected to pgnd . 5 ss i nput for the soft - start function there is an internal 8 a current source which charges an external capacitor to generate the soft - start. 6 fb i nput the feedback pin is internally connected to the regulation circuitry , the over - voltage and short - circuit comparators. the regulation reference point is 0.8v at this input pin. connect the feedback resistor divider between the output and agnd to set the output voltage. 7 v out power the o utput v oltage pin is connected to the internal inductor. for the best st ability and operation connect the output capacitor between this pin and pgnd. ep pgnd power exposed pad C main node for switch current of internal ls - mosfet. used as heat sink for power dissipation during operation. must be electrically connected to pin 4. ordering information order code part d escription p ackage packing unit 171012402 wpmdh115 2401jt to263 - 7ep tape and reel with 250 units 178012402 wpmdh115 2401jev eval board evaluation board 1 unit sales information sales contacts wrth elektronik eisos gmbh & co. kg emc & inductive solutions max - eyth - str. 1 74638 waldenburg germany tel. +49 (0) 79 42 945 - 0 www.we - online.com powermodules@we - online.com r o n v i n e n a g n d s s f b v o u t 1 2 3 4 5 6 7 6 7 e x p o s e d p a d = p g n d c o n n e c t t o a g n d e p
we - online.com wrth elektronik eisos gmbh & co. kg - data sheet - rev 1.0 3 / 31 wpmdh11 5 2401 / 17101 2402 magi3c power module v drm - variable step down regulator module a bsolute m aximum r atings caution: exceeding the listed absolute maximum ratings may affect the device negatively and may cause permanent damage. symbol parameter limits unit v in , r on input voltage, on - time resistor - 0.3 to 43.5 v en, fb, ss ena ble, feedback, soft - s tart input - 0.3 to 7.0 v v esd - hbm esd, human body model ( 1 ) - 2000 to 2000 v t j junction temperature 150 c t st storage temperature - 65 to 150 c t sol r peak case/leads temperature during reflow soldering , max. 2 0sec ( 2 ) maximum two cycles! 240 5c c operating conditions operating conditions are conditions under which operation of the device is intended to be functional. a ll values are referenced to gnd. symbol parameter min ( 3 ) typ (4 ) max ( 3 ) unit v in i nput v oltage 6 - 42 v v out regulated output voltage 5 24 v en enable i nput 0 - 6.5 v t a ambient temperature r ange - 40 - note ( 5 ) c t j junction t emperature r ange - 40 - 125 c thermal specifications symbol parameter typ unit ja thermal resistance junction to a mbient ( 6 ) 16 c/w jc thermal resistance junction to c ase , no air flow 1.9 c/w t sd thermal shut down , junction temperature , rising 165 c t sd - hyst thermal shut down hysteresis, falling 15 c e lectrical specifications min and max l imits are valid for the recommended junction temperature range of - 40c to 125c . typical values represent statistically the utmost probability at following conditions: v in =24 v, v out =12 v, r on =249k ? t a =25c, unless otherwise specified. symbol parameter conditions min ( 3 ) typ ( 4 ) max ( 3 ) unit i ocp over current protection 2.4 3.2 3.95 a v en en threshold trip point v en rising 1.10 1.18 1.25 v v en - hys en threshold hysteresis v en falling - 90 - mv f sw switching frequency continuous conduction mode (ccm) 0.2 - 0.8 mhz t on - min on timer minimum pulse width - 150 - ns t off off timer pulse width - 260 - ns i ss ss pin source current v ss = 0v 8 10 15 a t ss soft - s tart time c ss = 4 . 7n f 0.5 ms i ss - dis ss discharge current - - 200 - a
we - online.com wrth elektronik eisos gmbh & co. kg - data sheet - rev 1.0 4 / 31 wpmdh11 5 2401 / 17101 2402 magi3c power module v drm - variable step down regulator module e lectrical specifications min and max l imits are valid for the recommended junction temperature range of - 40c to 125c . typical values represent statistically the utmost probability at following conditions: v in =24 v, v out =12 v, r on =249k ? t a =25c, unless otherwise specified. symbol parameter conditions min ( 3 ) typ ( 4 ) max ( 3 ) unit v fb in - regulation feedback voltage v in = 24v, v out = 12v v ss >+ 0.8v t j = - 40c to 125c i out = 10ma to 1 .5 a 0.784 0.804 0.825 v v fb in - regulation feedback voltage v in = 24v, v out = 12v v ss >+ 0.8v t j = 25c i out = 10ma to 1 .5 a 0.7 86 0.80 3 0.818 v v fb - ovp feedback over - voltage protection threshold - 0.92 - v i fb feedback input bias current - 5 - na i q non s witching i nput c urrent v fb = 0.86v - 1 - ma i sd shut down quiescent c urrent v en = 0v - 25 - a v out output v oltage r ipple v out =5v c out =100 f 6.3v x7r - 8 - mv pp v out /v in line r egulation v in = 16v to 42v i out = 1 .5 a - 0.01 - % v ot /i out load r egulation v in = 24v i out = 0a to 1 a - 1.5 - mv/a efficiency v in =24v v out =12 v i out = 1 a - 93 - % efficiency v in = 24v v out = 12 v i out = 1 .5 a - 92 - % notes (1) the human body model is a 100pf capacitor discharged through a 1.5 k resistor into each pin. test method is per jesd - 22 - 114. (2) jedec j - std020 (3) min and max limits are 100% production tested at 25c. limits over the operating temperature range are guaranteed through correlation using statistical quality control (sqc) methods. (4) typical numbers are valid at 25c ambient temperature and represent statistically the utmost probability assuming the gaussian distribution. (5) depending on heat sink design, number of pcb layers, copper thickness an d air flow. (6) 4 layer p rinted c ircuit b oard, 76.2mm x 76.2mm area, 35m copper, n o air flow .
we - online.com wrth elektronik eisos gmbh & co. kg - data sheet - rev 1.0 5 / 31 wpmdh11 5 2401 / 17101 2402 magi3c power module v drm - variable step down regulator module typical performance curve s if not otherwise specified, the following conditions apply: v in = 24v; c in = 10f x7r c eramic; c o = 47 f x7r c eramic , t amb = 25c o u t p u t c u r r e n t [ a ] a m b i e n t t e m p e r a t u r e [ c ] t h e r m a l d e r a t i n g : v i n = 2 4 v , v o u t = 1 2 v @ j a = 1 6 c / w - 2 0 0 2 0 4 0 6 0 8 0 1 0 0 1 2 0 1 4 0 0 . 0 0 . 5 1 . 0 1 . 5 2 . 0 o u t p u t c u r r e n t [ a ] a m b i e n t t e m p e r a t u r e [ c ] t h e r m a l d e r a t i n g : v i n = 4 2 v , v o u t = 2 4 v @ j a = 1 6 c / w - 2 0 0 2 0 4 0 6 0 8 0 1 0 0 1 2 0 1 4 0 0 . 0 0 . 5 1 . 0 1 . 5 2 . 0 l o a d t r a n s i e n t r e s p o n s e v i n = 2 4 v v o u t = 1 2 v l o a d s t e p f r o m 1 0 % t o 7 0 % 2 0 0 m v / d i v 1 m s / d i v 5 0 0 m a / d i v i o u t v o u t = 1 2 v l o a d t r a n s i e n t r e s p o n s e v i n = 2 4 v v o u t = 1 2 v l o a d s t e p f r o m 3 0 % t o 7 0 % 2 0 0 m v / d i v 1 m s / d i v 5 0 0 m a / d i v i o u t v o u t = 1 2 v
we - online.com wrth elektronik eisos gmbh & co. kg - data sheet - rev 1.0 6 / 31 wpmdh11 5 2401 / 17101 2402 magi3c power module v drm - variable step down regulator module typical performance curve s if not otherwise specified, the following conditions apply: v in = 24v; c in = 10f x7r c eramic; c o = 47 f x7r c eramic , t amb = 25c e f f i c i e n c y [ % ] o u t p u t c u r r e n t [ a ] e f f i c i e n c y : v o u t = 5 v @ t a m b = 2 5 c 7 0 7 5 8 0 8 5 9 0 9 5 1 0 0 0 . 0 0 . 5 1 . 0 1 . 5 v i n = 8 v v i n = 1 2 v v i n = 2 4 v p o w e r l o s s [ w ] o u t p u t c u r r e n t [ a ] p o w e r l o s s : v o u t = 5 v @ t a m b = 2 5 c v i n = 8 v v i n = 1 2 v v i n = 2 4 v 0 . 0 0 . 5 1 . 0 1 . 5 2 . 0 2 . 5 3 . 0 0 . 0 0 . 5 1 . 0 1 . 5 e f f i c i e n c y [ % ] o u t p u t c u r r e n t [ a ] e f f i c i e n c y : v o u t = 1 2 v @ t a m b = 2 5 c 7 0 7 5 8 0 8 5 9 0 9 5 1 0 0 0 . 0 0 . 5 1 . 0 1 . 5 v i n = 1 5 v v i n = 2 4 v v i n = 3 6 v p o w e r l o s s [ w ] o u t p u t c u r r e n t [ a ] p o w e r l o s s : v o u t = 1 2 v @ t a m b = 2 5 c 0 . 0 0 . 5 1 . 0 1 . 5 2 . 0 2 . 5 3 . 0 v i n = 1 5 v v i n = 2 4 v v i n = 3 6 v 0 . 0 0 . 5 1 . 0 1 . 5 e f f i c i e n c y [ % ] o u t p u t c u r r e n t [ a ] e f f i c i e n c y : v o u t = 2 4 v @ t a m b = 2 5 c 7 0 7 5 8 0 8 5 9 0 9 5 1 0 0 0 . 0 0 . 5 1 . 0 1 . 5 v i n = 2 8 v v i n = 3 0 v v i n = 3 6 v p o w e r l o s s [ w ] o u t p u t c u r r e n t [ a ] p o w e r l o s s : v o u t = 2 4 v @ t a m b = 2 5 c 0 . 0 0 . 5 1 . 0 1 . 5 2 . 0 2 . 5 3 . 0 v i n = 2 8 v v i n = 3 0 v v i n = 3 6 v 0 . 0 0 . 5 1 . 0 1 . 5
we - online.com wrth elektronik eisos gmbh & co. kg - data sheet - rev 1.0 7 / 31 wpmdh11 5 2401 / 17101 2402 magi3c power module v drm - variable step down regulator module typical performance curve s if not otherwise specified, the following conditions apply: v in = 24v; c in = 10f x7r c eramic; c o = 47 f x7r c eramic , t amb = 25c e f f i c i e n c y [ % ] o u t p u t c u r r e n t [ a ] e f f i c i e n c y : v o u t = 5 v @ t a m b = 8 5 c 7 0 7 5 8 0 8 5 9 0 9 5 1 0 0 0 . 0 0 . 5 1 . 0 1 . 5 v i n = 8 v v i n = 1 2 v v i n = 2 4 v p o w e r l o s s [ w ] o u t p u t c u r r e n t [ a ] p o w e r l o s s : v o u t = 5 v @ t a m b = 8 5 c v i n = 8 v v i n = 1 2 v v i n = 2 4 v 0 . 0 0 . 5 1 . 0 1 . 5 2 . 0 2 . 5 3 . 0 0 . 0 0 . 5 1 . 0 1 . 5 e f f i c i e n c y [ % ] o u t p u t c u r r e n t [ a ] e f f i c i e n c y : v o u t = 1 2 v @ t a m b = 8 5 c 7 0 7 5 8 0 8 5 9 0 9 5 1 0 0 0 . 0 0 . 5 1 . 0 1 . 5 v i n = 1 5 v v i n = 2 4 v v i n = 3 6 v p o w e r l o s s [ w ] o u t p u t c u r r e n t [ a ] p o w e r l o s s : v o u t = 1 2 v @ t a m b = 8 5 c 0 . 0 0 . 5 1 . 0 1 . 5 2 . 0 2 . 5 3 . 0 v i n = 1 5 v v i n = 2 4 v v i n = 3 6 v 0 . 0 0 . 5 1 . 0 1 . 5 e f f i c i e n c y [ % ] o u t p u t c u r r e n t [ a ] e f f i c i e n c y : v o u t = 2 4 v @ t a m b = 8 5 c 7 0 7 5 8 0 8 5 9 0 9 5 1 0 0 0 . 0 0 . 5 1 . 0 1 . 5 v i n = 2 8 v v i n = 3 0 v v i n = 3 6 v p o w e r l o s s [ w ] o u t p u t c u r r e n t [ a ] p o w e r l o s s : v o u t = 2 4 v @ t a m b = 8 5 c 0 . 0 0 . 5 1 . 0 1 . 5 2 . 0 2 . 5 3 . 0 v i n = 2 8 v v i n = 3 0 v v i n = 3 6 v 0 . 0 0 . 5 1 . 0 1 . 5
we - online.com wrth elektronik eisos gmbh & co. kg - data sheet - rev 1.0 8 / 31 wpmdh11 5 2401 / 17101 2402 magi3c power module v drm - variable step down regulator module typical performance curve s if not otherwise specified, the following conditions apply: v in = 24v; c in = 10f x7r c eramic; c o = 47 f x7r c eramic , t amb = 25c s t a r t u p v i n = 2 4 v , i o u t = 1 . 5 a 5 v / d i v 1 m s / d i v v o u t e n a b l e 0 . 0 0 . 5 1 . 0 1 . 5 2 . 0 - 0 . 2 0 - 0 . 1 5 - 0 . 1 0 - 0 . 0 5 0 . 0 0 0 . 0 5 0 . 1 0 0 . 1 5 0 . 2 0 v i n = 1 5 v v i n = 2 4 v v i n = 3 6 v o u t p u t v o l t a g e r e g u l a t i o n [ % ] o u t p u t c u r r e n t [ a ] l i n e a n d l o a d r e g u l a t i o n t a m b = 2 5 c o u t p u t r i p p e l v i n = 1 2 v , i o u t = 1 . 5 a , c e r a m i c c o u t , b w = 2 0 0 m h z 2 0 m v / d i v 1 s / d i v v o u t = 5 v o u t p u t r i p p e l v i n = 2 4 v , i o u t = 1 . 5 a , p o l y m e r e l e c t r o l y t i c c o u t , b w = 2 0 0 m h z 1 0 0 m v / d i v 1 s / d i v v o u t = 1 2 v
we - online.com wrth elektronik eisos gmbh & co. kg - data sheet - rev 1.0 9 / 31 wpmdh11 5 2401 / 17101 2402 magi3c power module v drm - variable step down regulator module typical performance curve s if not otherwise specified, the following conditions apply: v in = 24v; c in = 10f x7r c eramic; c o = 47 f x7r c eramic , t amb = 25c 2 . 0 2 . 5 3 . 0 3 . 5 4 . 0 4 . 5 5 1 0 1 5 2 0 2 5 3 0 3 5 4 0 4 5 f s w = 2 5 0 k h z f s w = 4 0 0 k h z f s w = 6 0 0 k h z d c c u r r e n t l i m i t l e v e l [ a ] i n p u t v o l t a g e [ v ] c u r r e n t l i m i t v s . i n p u t v o l t a g e v o u t = 1 2 v @ t a m b = 2 5 c 2 . 0 2 . 5 3 . 0 3 . 5 4 . 0 4 . 5 d c c u r r e n t l i m i t l e v e l [ a ] i n p u t v o l t a g e [ v ] c u r r e n t l i m i t v s . i n p u t v o l t a g e v o u t = 2 4 v @ t a m b = 2 5 c f s w = 2 5 0 k h z f s w = 4 0 0 k h z f s w = 6 0 0 k h z 3 0 3 3 3 6 3 9 4 2 4 5 0 . 0 0 . 5 1 . 0 1 . 5 2 . 0 2 . 5 3 . 0 3 . 5 2 0 0 3 0 0 4 0 0 5 0 0 6 0 0 7 0 0 8 0 0 v i n = 1 5 v v i n = 2 4 v v i n = 3 6 v p o w e r l o s s [ w ] s w i t c h i n g f r e q u e n c y [ k h z ] s w i t c h i n g f r e q u e n c y v s . p o w e r d i s s i p a t i o n v o u t = 1 2 v @ t a m b = 2 5 c 0 . 0 0 . 5 1 . 0 1 . 5 2 . 0 2 . 5 3 . 0 3 . 5 2 0 0 3 0 0 4 0 0 5 0 0 6 0 0 7 0 0 8 0 0 v i n = 3 0 v v i n = 3 6 v p o w e r l o s s [ w ] s w i t c h i n g f r e q u e n c y [ k h z ] s w i t c h i n g f r e q u e n c y v s . p o w e r d i s s i p a t i o n v o u t = 2 4 v @ t a m b = 2 5 c
we - online.com wrth elektronik eisos gmbh & co. kg - data sheet - rev 1.0 10 / 31 wpmdh11 5 2401 / 17101 2402 magi3c power module v drm - variable step down regulator module block diagram c ircuit description the magi3c power module wpmdh1152401 is based on a synchronous step down regulator with integrated mosfet and a power inductor. the control scheme uses a constant on - time (cot) low ripple hysteretic regulation loop. the v out of the regulator is divided with the feedback resistor network r fbt and r fbb and fed into the fb pin. the internal comparator compares this signal with the in ternal 0.8v reference. if the feedback voltage is below the reference, the high side mosfet is turned on for a fixed on - time. to achieve a regulated output voltage the off - time is modulated. at stable v in to v out condition the relation between on - time and off - time is constant. the on - time is fixed and preset by the value of the ron resistor. the switching frequency is directly proportional to this value. the connection of the r on resistor to v in results into an additional compensation of varying v in values , ( v in feed - forward) so the switching frequency will remain almo st constant even during v in transients. a load current transient (low to high current) allows the off - time to immediately transition to the minimum of 260 ns. this results in a short term hi gher switching frequency which ensures an extremely quick regulation response. as soon as the output capacitor is recharged to the nominal output voltage the switching frequency will return to the original value even though the load current is higher. co nstant on - time co ntrol scheme does not require compensation circuitry which makes the overall design very simple. nevertheless it requires a certain minimum ripple at the feedback pin. the magi3c power module wpmdh1152401 generates this ripple internally and is supported by the c ff capacitor which bypasses ac ripple directly to the feedback pin from the output. with this architecture very small output ripple values of 10ths of millivolts similar to cu rrent or voltage mode devices are achieved. c o u t l s s h s s r o n v i n e n p g n d s s f b v o u t 1 5 h c v c c c b o o s t 0 . 4 7 f p o w e r m o d u l e a g n d c o n t r o l l e r / p o w e r c o n t r o l / p r o t e c t i o n c i r c u i t r y l i n e a r r e g u l a t o r r o n 1 2 6 c s s 5 3 e p 4 7 c i n r f b t r f b b c f f v i n u v l o v i n v o u t a g n d a g n d
we - online.com wrth elektronik eisos gmbh & co. kg - data sheet - rev 1.0 11 / 31 wpmdh11 5 2401 / 17101 2402 magi3c power module v drm - variable step down regulator module d esign fl ow 7 steps to design the p ower a pplication the next 7 simple steps will show how to select the external components to design your power a pplication : 1. program output voltage 2. set operating frequency with r on 3. select input capacitor 4. select output capacitor 5. select soft - start capacitor 6. select feed forward capacitor 7. optional: program under voltage lockout divider step 1 . select output voltage (v out ) output voltage is determined by a divider of two resistors connected between v out and ground. the midpoint of the divider is connected to the fb input. the voltage at fb is compared to a 0.8v internal reference. in normal operation an on - time cycle is initiated when the voltage on the fb pin falls below 0.8v. the high - side mosfet on - ti me cycle causes the output voltage to rise and the voltage at the fb to exceed 0.8v. as long as the voltage at fb is above 0.8v, on time cycles will not occur. the ratio of the feedback resistors for a desired output voltage is: r fbt r fbb = ( v out 0 . 8v ) ? 1 (1 ) these resistors should be chose n from values in the range of 1 k to 5 0 k . a table of values for r fbt , r fbb , and r on is included in the applications circuit. step 2 . select on - time resistor (r on ) many designs will begin with a desi red switching frequency in mind. for that purpose the following equation can be used. r on ? v ??? ( 1 . 3 ? 10 ? 10 ? f sw ( ccm ) ) ( 2 ) the selection of r on and f sw(ccm) must be confined by limitations in the on - time and off - time for the cot control section. the on - time of the magi3c power module timer is determined by the resistor r on and the input voltage v in . it is calculated as follows: t on = ( 1 . 3 ? 10 ? 10 ? r on ) ? ?? ( 3 ) r o n c i n r o n v i n e n p g n d s s f b v o u t m o d u l e r f b t r f b b c s s c f f c o u t a g n d 1 2 3 e p 5 4 6 7 r e n t r e n b 1 . 2 . 3 . 4 . 5 . 6 . 7 . v i n v o u t
we - online.com wrth elektronik eisos gmbh & co. kg - data sheet - rev 1.0 12 / 31 wpmdh11 5 2401 / 17101 2402 magi3c power module v drm - variable step down regulator module d esign fl ow the inverse relationship of t on and v in gives a nearly constant switching frequency as v in is varied. r on should be selected such that the on - time at maximum v in is greater than 150 ns. the on - timer has a lim iter to ensure a minimum of 150 ns for t on . this limits the maximum operating frequency, which is governed by the following equation: f sw ( max ) = v ??? ( v ? ? ( ??? ) ? 150ns ) (4 ) this equation can be used to select r on if a certain operating frequency is desired as lon g as the minimum on - time of 150 ns is observed. the limit for r on can be calculated as follows: r on v ?? ( ??? ) ? 150nsec ( 1 . 3 ? 10 ? 10 ) (5 ) if r on calculated in equation ( 2 ) is less than the minimum value determined in equation ( 5 ) a lower frequency should be selected. alternatively, v in(max) can also be limited in order to keep the frequency unchanged. additionally note , the minimum off - time of 260 ns limits the maximum duty ratio. larger r on (lower f sw ) should be selected in any application requiring large duty ratio. discontinuous conduction and continuous conduction modes at light load the regulator will operate in discontinuous conduction mode (dcm). with load currents above the critical conduction point, it will operate in continuous conduction mode (ccm). when operating in dcm the switching cycle begin s at zero amps inductor current, increases up to a peak value, and then recedes back to zero before the end of the off - time. note that during the period of time when the inductor current is zero, all load current is supplied by the output capacitor. the next on - time period starts when the voltage on the fb pin falls below the internal reference. the switching frequency is lower in dcm and varies more with load current as compared to ccm. conversion efficiency in dcm is maintained since conduction and switching losses are reduced with the smaller load and lower switching frequency. operating freque ncy in dcm can be calculated as follows: f sw ( dcm ) ? v ??? ? ( v in ? 1 ) ? 15 h ? 1 . 18 ? 10 20 ? i ??? ( v in C v ??? ) ? ( r ?? ) 2 ( 6 ) in ccm, current flows through the inductor through the entire switching cycle and never falls to zero during the off - time. the switching frequency remains relatively constant with load current and line voltage variations. the ccm operating frequency can be calculated using equation ( 4 ) above. the approximate formula for determining the dcm/ccm boundary is as follows: i dcb ? v ??? ? ( v in C v ??? ) 2 ? 15 h ? f sw ( ccm ) ? v in ( 7 ) the value of the induc tor in side the module is 15 h. this was chosen as a good balance between low and high input voltage applications. the main parameter affected by the inductor is the amplitude of the inductor ripple current (i lr ). i lr peak to peak can be calculated with: i lr p ? p = v ??? ? ( v ?? ? v ??? ) 15 h ? f sw ? v ?? ( 8 ) where v in is the maximum input voltage and f sw is the previously selected value in equation ( 2 ) . if the output current i out is determined by assuming that i out = i l , the higher and lower peak of i lr can be determined. be aware that the lower peak of i lr must be po sitive if ccm operation is required.
we - online.com wrth elektronik eisos gmbh & co. kg - data sheet - rev 1.0 13 / 31 wpmdh11 5 2401 / 17101 2402 magi3c power module v drm - variable step down regulator module d esign fl ow step 3 . select input capacitor (c in ) the magi3c power m odule contains an internal 0.47 f input ceramic capacitor. additional input capacitance is required external to the magi3c power module to handle the input ripple current of the application. this input capacitance should be located as close as possible to the magi3c power module. input capacitor selection is generally directed to satisfy the input ripple current requirements rather than by capacitance value. worst case input ripple current rating is dictated by the equation: i ( c in ( rms ) ) ? 1 2 ? i ??? ? d / ( 1 ? d ) ( 9 ) where ? ? ? ??? ? ?? (as a point of reference, the worst case ripple current will occur when the module is presented with full load current and when ? ?? = 2 ? ? ??? ). if the system design requires a certain maximum value of input ripple voltage v in to be maintained then the following equation may be used: c in ? ??? ? d ? ( 1 C d ) f sw ? ccm ? v in ( 10 ) if v in is 1% of v in for a 24v input to 12 v output application this equals 240 mv and f sw = 400 khz. c in 1 . 5a ? 12v 24 ? ? ( 1 C 12v 24 ? ) 400000 ? 0 . 240v c in 3 . 9f recommended minimum input capacitance is 10f x7r ceramic with a voltage rating at least 25% higher than the maximum applied input voltage for the application. it is also recommended that attention be paid to the voltage and temperature deratings of the ca pacitor selected. it should be noted that ripple current rating of ceramic capacitors may be missing from the capacitor data sheet and you may have to contact the capacitor manufacturer for this rating. additional bulk capacitance with higher esr may be required to damp any resonant effects of the input capacitance and parasitic inductance of the incoming supply lines.
we - online.com wrth elektronik eisos gmbh & co. kg - data sheet - rev 1.0 14 / 31 wpmdh11 5 2401 / 17101 2402 magi3c power module v drm - variable step down regulator module d esign fl ow step 4. select output capacitor (c out ) none of the required output capacitance is integrated within the module. at a minimum, the output capacitor must meet the worst case rms current rating of 0 . 5 ? ? ?? ? ? ? , as calculated in equation ( 8 ). beyond that, additional capacitance will reduce output ripple so long as the esr is low enough to p ermit it. a minimum value of 10 f is generally required. please consider the derating of the nominal capacitance value dependent on the dc voltage applied across it. experimentation will be required if attempting to operate with a minimum value. low esr capacitors, such as ceramic and polymer electrolytic capacitors are recommended. capac itance: the following equation provides a good first pass approximation of c out for load transient requirements: c out i step ? v fb ? l ? v in 4 ? v out ? ( v in ? v out ) ? v out ? tran ( 11 ) for example: i step = 1 . 5 ? , v in = 24 ? , v out = 12 ? , v out ? tran = 50 ?? solving: c out 1 . 5a ? 0 . 8v ? 15h ? 24v 4 ? 12v ? ( 24v ? 12v ) ? 0 . 05v c out 15f esr: the esr of the output capacitor affects the output voltage ripple. high esr will result in larger v out peak - to - peak ripple voltage. furthermore, high output voltage ripple caused by excessive esr can trigger the over - voltage protection monitored at the fb pin. the esr should be chosen to satisfy the maximum desired v out peak - to - peak ripple voltage and to a void over - voltage protection during normal operation. the following equations can be used: esr max ? ripple v out ? ripple i lr p ? p (12 ) where i lr p ? p (peak to peak inductor ripple current ) is calculated using equation ( 8 ) . esr max ? ovp < ( v fb ? ovp ? v fb ) ( i lr p ? p ? a fb ) ( 13 ) where a fb is the gain of the feedback network from v out to v fb at the switching frequency. as worst case, assume the gain of a fb with the c ff capacitor at the switching frequency is 1. the selected output capacitor should have sufficient voltage and rms current rating. the rms current i s calculated as follows : i ( c out ( rms ) ) = i lr p ? p 12 (14 )
we - online.com wrth elektronik eisos gmbh & co. kg - data sheet - rev 1.0 15 / 31 wpmdh11 5 2401 / 17101 2402 magi3c power module v drm - variable step down regulator module d esign fl ow step 5 . select soft - start capacitor (c ss ) programmable soft - start permits the regulator to slowly ramp to its steady state operating point after being enabled, thereby reducing current inrush from the input supply and slowing the output voltage rise - time to prevent overshoot. upon turn - on, after a ll uvlo conditions have been passed, an internal 8 a current source begins charging the external soft - start capacitor. the soft - start ca pacitor can be calculated with: c ss = t ss ? 8 a 0 . 8v ( 15 ) with t ss = select soft - start time in (ms) the u se of a 4.7n f capacitor results in 0 . 5 ms soft - start duration. this is a recommended minimum value. as the soft - start input exceeds 0.8v the output of the power stage will be in regulation. the soft - start capacitor continues charging until it reaches approximately 3.8v on the ss pin. voltage levels between 0.8v and 3.8v have no effect on other circuit operation. note that high values of the c ss capacitance will cause more output voltage droop when a load transient goes across the d cm - ccm boundary. use equation ( 7 ) to find the dcm - ccm boundary load current for the specific operating condition. if a fast load transient response is desired for steps between dcm and ccm mode the soft - start capacitor value should be less than 0.018 f. note that the following conditions will reset the soft - start capacitor by discharging the ss input to ground with an internal 200 a current sink: 1. the enable input being pulled low 2. thermal shutdown condition 3. over - current fault 4. internal v in uvlo step 6 . select feed forward capacitor (c ff ) a feed - forward capacitor c ff is placed in parallel with r fbt which bypasses ac ripple directly to the feedback pin from the output to support the internal ripple generator . this capacitor also affects load step transient response. its value is usually determined experimentally by load stepping between dcm and ccm conduction modes and adjusting for best transient response and minimum output ripple. a value of 22nf has been practically evaluated as best performing. the feed forward capacitor c ff , should b e located close to the fb pin. step 7 . optional: select enable divider, r ent , r enb the enable input provides a precise 1.18v reference threshold to allow direct logic drive or connection to a voltage divider from a higher enable voltage such as v in . the en able input also incorporates 90 mv (typ) of hysteresis resulting in a falling threshold of 1.09v. the maximum recommended voltage into the en pin is 6.5v. for applications where the midpoint of the enable divider exceeds 6.5v, a small zener diode can be a dded to limit this voltage. the function of the r ent and r enb divider shown in the application block d iagram is to allow the designer to choose an input voltage below which the circuit will be disabled. this implements the feature of programmable external under voltage lockout. this is often used in battery powered systems to prevent deep discharge of the system battery. it is also useful in system designs for sequencing of output rails or to prevent early turn - on of the supply as the main input vo ltage rail rises at power - up . most systems will benefit by using the precision enable threshold to establish a system under voltage lockout. the recommended approach is to choose an input uvlo level that is higher than the target regulated output voltage f or the stage. without an enable divider, this series of devices will attempt to turn on around 3.5 vin. this would not be useful for a stage that ultimately might be creating 5vout. o peration of the module on input voltage conditions below the nominal outp ut should be avoided. systems that don't implement the enable divider will turn in early during the rise of vin and might not have monotonic rise in output voltage. many systems need smooth rise in supply voltage . i n the case of sequencing supplies, the di vider is connected to a rail that becomes active earlier in the power - up cycle than the magi3c power m odule output rail. the two resistors should be chosen based on the following ratio:
we - online.com wrth elektronik eisos gmbh & co. kg - data sheet - rev 1.0 16 / 31 wpmdh11 5 2401 / 17101 2402 magi3c power module v drm - variable step down regulator module d esign fl ow ? ??? ? ??? = ? ???? ( ?????? ) 1 . 18 ? C 1 (1 6 ) v uvlo (extern) = user programmable voltage threshold to turn the module on/off. the en pin is internally pulled up to v in and can be left floating for always - on operation. however, it is good practice to use the enable divider and turn on the regulator when v in is close to reaching its nominal value. this will guarantee smooth startup and will prevent overloading the input supply. determine power losses and thermal r equirements of the board for example: v in = 24 ? , v out = 12 ? , i out = 1 . 5 ? , t amb ( max ) = 85c and t j ( max ) = 125c t amb(max) is the maximum air temperature surrounding the module. t j(max) is the maximum value of the junction temperature according to the operating conditions limit . the goal of the calculation is to determine the characteristics of the required heat sink. in case of a surface mounted module this would be the pcb (n umber of layers, copper area and thickness). these characteristics are reflected in the value of the thermal resistance case to ambient: ? c a . the basic formula for calculating the operating junction temperature t j of a semiconductor device is as follows: t j = ? ?? ? ???? ? ja + t amb ( 17 ) p ic - loss are the total power losses within the module ic and are related to the operating conditions. ? ja i s the thermal resistance junction to ambient and calculated as: ja = jc + ca ( 18 ) ? j c is the thermal resistance junction to case. combining equation ( 17 ) and ( 18 ) results in the maximum case - to - ambient thermal resistance: ca ( max ) < t j ? max ? t amb ( max ) ? ?? ? ???? ? jc (1 9 ) from section thermal specifications the typical thermal resistance from junction to case ( ? j c ) is defined as 1.9 c/w. use the 85c power dissipation curves in the typical perform ance curves section to estimate the p ic - loss for the application being d esigned.
we - online.com wrth elektronik eisos gmbh & co. kg - data sheet - rev 1.0 17 / 31 wpmdh11 5 2401 / 17101 2402 magi3c power module v drm - variable step down regulator module d esign fl ow from the graph we read a power loss of 1 . 2 w. entering the values in formula (1 9 ) results in: ca ( max ) < 125c ? 85c 1 . 2 ? ? 1 . 9c / w = 31 . 4 c / w ja ( max ) = jc + ca ( max ) = 1 . 9c / w + 15 . 2 c / w = 33 . 3 c / w to achieve this thermal resistance the pcb is required to dissipate the heat effectively. the area of the pcb will have a direct effect on the overall junction - to - ambient thermal resistance. in order to estimate the necessary copper area we can refer to the following pack age thermal r esistance graph . this graph is taken from the typical performance curves section and shows how the ja varies with the pcb area. for ja < 33 . 3 c / w and only natural convection (i.e. no air flow), th e minimum pcb area can be smaller than 10 cm 2 . this corresponds to a square board with 5.5cm x 5.5 c m copper area, 4 layers, and 35m copper thickness. higher copper thickness will further improve the overall thermal performance. note that thermal vias should be placed under the ic package to easily transfer heat from the top layer of the pcb to the inner layers and the bottom layer. light load operation: at light load the device continuously decreases the switching frequency and thereby maintains a high efficiency. the ripple is slightly increasing in this mode of operation but still small due to no burst mode operation . see waveforms in section typical performance curve s. no minimum load is required. p o w e r l o s s [ w ] o u t p u t c u r r e n t [ a ] p o w e r l o s s : v o u t = 1 2 v @ t a m b = 8 5 c 0 . 0 0 . 5 1 . 0 1 . 5 2 . 0 2 . 5 3 . 0 v i n = 1 5 v v i n = 2 4 v v i n = 3 6 v 0 . 0 0 . 5 1 . 0 1 . 5 t h e r m a l r e s i s t a n c e j a [ c / w ] b o a r d a r e a [ c m 2 ] p a c k a g e t h e r m a l r e s i s t a n c e j a 4 l a y e r p r i n t e d c i r c u i t b o a r d w i t h 3 5 m c o p p e r 0 l f m ( 0 m / s ) a i r 2 2 5 l f m ( 1 . 1 4 m / s ) a i r 5 0 0 l f m ( 2 . 5 4 m / s ) a i r e v a l u a t i o n b o a r d a r e a 0 5 1 0 1 5 2 0 2 5 3 0 3 5 4 0 0 1 0 2 0 3 0 4 0 5 0 6 0
we - online.com wrth elektronik eisos gmbh & co. kg - data sheet - rev 1.0 18 / 31 wpmdh11 5 2401 / 17101 2402 magi3c power module v drm - variable step down regulator module d esign fl ow pcb layout instructions: pc board layout is an important part of dc - dc converter design. poor board layout can disrupt the performance of a dc - dc converter and surrounding circuitry by contributing to emi, ground bounce and resistive voltage drop in the traces. these can send erroneous signals to th e dc - dc converter resulting in poor regulation or instability. good layout can be implemented by following five simple design rules. 1: minimize area of switched current loops. target is to identify the paths in the system which have discontinuous current flow. they are the most critical ones because they act as an antenna and cause observable high frequency noise (emi). the easiest approach to find the critical paths is to draw the high current loops during both swit ching cycles and identify the sections which do not overlap . t hey are the ones where no continuous current flow s and high di/dt is observed . loop1 is the current path during the on - time of the high - side mosfet. loop2 is the current path during the of f - time of the high - side mosfet. based on those considerations, the path of the input capacitor c in is the most critical one to generate high frequency noise on vin. therefore place c in as close as possible to the magi3c power module v in and pgnd exposed pad ep . this will minimize the high di/dt area and reduce radiated emi. additionally, grounding for both the input and output capacitor should consist of a localized top side plane that connects to the pgnd exposed pad. c i n v i n p g n d v o u t p o w e r m o d u l e c o u t l o o p 1 l o o p 2 h i g h d i / d t v i n v o u t v i n v i n f b p g n d v o u t m o d u l e r f b t r f b b c o u t a g n d 6 7 c i n 1 e p 4 v o u t
we - online.com wrth elektronik eisos gmbh & co. kg - data sheet - rev 1.0 19 / 31 wpmdh11 5 2401 / 17101 2402 magi3c power module v drm - variable step down regulator module d esign fl ow th e placement of the input capacitors is highlighted in the following picture of the evaluation board: 2: have a single point ground. the ground connections for the feedback, soft - start, and enable components should be routed to the a gnd pin of the device. this prevents any switched or load currents from flowing in the analog ground traces. if not properly handled, poor grounding can result in degraded load regulation or erratic output voltage ripple behavior.
we - online.com wrth elektronik eisos gmbh & co. kg - data sheet - rev 1.0 20 / 31 wpmdh11 5 2401 / 17101 2402 magi3c power module v drm - variable step down regulator module d esign fl ow provide the sing le point gr ound connection from agnd pin 4 to the gnd terminal of the output capacitor . this is the point of lowest noise. 3: minimize trace length to the fb pin. the feedback resistors, r fbt and r fbb , and the feed forward capacitor c ff , should be located close to the fb pin. since the fb node is high impedance, maintain the copper area as small as possible. the traces from r fbt , r fbb , and c ff should be routed away from the body of the magi3c power module to minimize noise pickup.
we - online.com wrth elektronik eisos gmbh & co. kg - data sheet - rev 1.0 21 / 31 wpmdh11 5 2401 / 17101 2402 magi3c power module v drm - variable step down regulator module d esign fl ow 4: make input and output bus connections as wide as possible. this reduces any voltage drops on the input or output of the converter and maximizes efficiency. 5: provide adequate device heat - sinking. use an array of heat - sinking vias to connect the exposed pad to the ground plane on the bottom pcb layer. if the pcb has a plurality of copper layers, these thermal vias can also be used to make connection to inner layer heat - spreading ground planes. for best results use a 6 x 6 via array w ith minimum via diameter of 254 m thermal vias spaced 1.5 mm. ensure enough copper area is used for heat - sinking to keep the junction temperature below 125c.
we - online.com wrth elektronik eisos gmbh & co. kg - data sheet - rev 1.0 22 / 31 wpmdh11 5 2401 / 17101 2402 magi3c power module v drm - variable step down regulator module p rotective features o utput over - voltage protection (ovp) the voltage at fb is compared to a 0. 8 v internal reference. the over - voltage protection (ovp) has a threshold of 0.92v. if fb rises above this limit, the on - time is immediately termin ated. it can occur if the input voltage is increased very suddenly or if the output load is decreased very suddenly. once ovp is activated, the top mosfet on - times will be inhibited until the condition clears. additionally, the synchronous mosfet will remain on until inductor current falls to zero. over current protection (ocp) current limit detection is carried out during the off - time by monitoring the current in the synchronous mosfet. referring to the functional block diagram, when the top mosfet is turned off, the inductor current flows through the load, the pgnd pin and the internal synchronous mosfet. if this current exceeds the i cl value, the current limit comparator disables the start of the next on - time period. the next switching cycle will occur only if the fb input is less than 0.8v and the inductor current has decreased below i cl . inductor current is monitored during the period of time the sync hronous mosfet is conducting. as long as the inductor current exceeds i cl , further on - time intervals for the top mosfet will not occur. switching frequency is lower during current limit due to the longer off - time. it should also be noted that dc current limit varies with duty cycle, switching frequency, and temperature. the values of the current limits during s hort circuit are visualized in the graph in the typical performance section. the green curve with the reference max load current represents the output current limit at which the output voltage is still in full regulation at nominal value. a further inc rease of the load current will cause a drop of the output voltage. over temperature protection (otp) the junction temperature of the magi3c power module should not be allowed to exceed its maximum ratings. thermal protection is implemented by an internal t hermal s hutdown circuit which activates at 165 c (typ . ) causing the device to enter a low power standby state. in this state the main mosfet remains off causing v out to fall, and additionally the c ss capacitor is discharged to ground. thermal protection helps to prevent catastrophic failures in case of accidental device overheating. when the junction t emperature falls back below 145c (typ ical h yst eresis = 20 c) the ss pin is released, v out rises smoothly, and normal operation resumes. zero coil current detection (zcct) the current of the lower (synchronous) mosfet is monitored by a zero coil current detection circuit which inhibits the synchronous mosfet when its current reaches zero until the next on - time. this circuit enables the dcm operating mode, which improves efficiency at light loads. output under - voltage protection (uvp) the magi3c power module will properly start up into a pre - biased output. this startup situation is common in multiple rail logic applications where current paths may exist between different power rails during the startup sequence. the pre - bias level of the output voltage must be less than the input uvlo set point. this will prevent the output pre - bias from enabling the regulator through the high side mosfet body diode.
we - online.com wrth elektronik eisos gmbh & co. kg - data sheet - rev 1.0 23 / 31 wpmdh11 5 2401 / 17101 2402 magi3c power module v drm - variable step down regulator module a pplications the magi3c power module for high output voltage is an easy - to - use dc - dc soluti on capable of driving up to a 2 a load with exceptional power conversion efficiency, output voltage accuracy, line and load regulation. it is available in an innovative package that enhances thermal performance and allows hand or machine soldering. following application circuits show pos sible operating configurations. application circuit bill of materials for design example 1: recommended component values specified at t a = 25c ref design ator description case size part mp 1 magi3c power module to263 - 7ep we magi3c power module c1 in , c1 out 1 f, 50v, x7r, 10% 1206 capacitor c2 in 10 f, 50v, x5 r, 20% 1210 capacitor c2 out 47f, 35m?, 16v, 20% 1210 capacitor c ff 0.022 f, 100 v, x7r, 10% 0805 capacitor c ss 4.7n f , 25 v , x7r, 10% 0805 capacitor r enb 11.8 k , 1 % 0805 resistor r ent 124 k , 1 % 0805 resistor r fbt 34 k , 1 % 0805 resistor r fbb 2.43 k , 1 % 0805 resistor r on 249 k , 1 % 0805 resistor 4 . 7 n f 2 . 4 3 k ? 3 4 k ? r o n c 1 i n r o n v i n e n p g n d s s f b v o u t m o d u l e r f b t r f b b c s s c f f c 1 o u t a g n d 1 2 3 e p 5 4 6 7 r e n t r e n b c 2 o u t 0 . 0 2 2 f 1 f 4 7 f 1 1 . 8 k ? 1 2 4 k ? 1 f c 2 i n o p t i o n a l 2 4 9 k ? 1 2 v / 1 . 5 a 1 5 v t o 4 2 v v i n v o u t m p 1 c 2 i n 1 0 f c 2 o u t o p t i o n a l e n a b l e v i n u v l o @ 1 3 . 5 v
we - online.com wrth elektronik eisos gmbh & co. kg - data sheet - rev 1.0 24 / 31 wpmdh11 5 2401 / 17101 2402 magi3c power module v drm - variable step down regulator module application circuit bill of materials for design example 2: v out 24 v 18v 15 v 12 v 5 v r fbt 34 k? 34 k? 34 k? 34 k? 34 k? r fbb 1.18 k? 1.58 k? 1.91 k? 2.43 k? 6.49 k? r on 499k ? 374 k? 287 k? 249 k? 100 k? c in 10f c out 33f 33f 47f 47f 100f c ss 4700pf c ff 0.022f c out - esr 1 - 75m ? 1 - 60m ? 1 - 65m ? 1 - 75m ? 1 - 145m ? v in 28 - 42v 22 - 42v 18 - 42v 15 - 42v 8 - 42v r o n c i n r o n v i n e n p g n d s s f b v o u t m o d u l e r f b t r f b b c s s c f f c o u t a g n d 1 2 3 e p 5 4 6 7 v i n v o u t
we - online.com wrth elektronik eisos gmbh & co. kg - data sheet - rev 1.0 25 / 31 wpmdh11 5 2401 / 17101 2402 magi3c power module v drm - variable step down regulator module handling recommendations 1. the power module is classified as msl 3 (jedec moisture sensitivity level 3) and requires special handling due to moisture sensitivity ( jedec j - std033 ). 2. the parts are delivered in a sealed bag ( moisture barrier bags = mbb) and should be processed within one year. 3. when opening the moisture barrier bag check the humidity indicator card (hic) for color status. bake parts prior to soldering in case indicator color has changed according to the notes on the card . 4. p arts must be processed after 168 hour (7 days) of floor life. once this time has been exceeded, bake parts prior to soldering per jedec j - std033 recommendation. s older profile 1. only pb - free assembly is recommended according to jedec j - std020. 2. measure the peak reflow temperature of the magi3c power module in the middle of the top view. 3. ensure that the peak reflow temperature does not exceed 240c 5c as per jedec j - std020 . 4. the r eflow time period during p eak t emp erature of 240c 5c must not exceed 20 seconds. 5. reflow time above liquidus (217c) must not exceed 60 seconds. 6. maximum r amp up is rate 3 c per second 7. maximum r amp down rate is 6c per second 8. reflow time from room (25c) to peak must not exceed 8 minutes as per jedec j - std020 . 9. maximum numbers of reflow cycles is two . 10. for minimum risk, solder the module in the last reflow cycle of the pcb production. 11. for soldering process please consider lead material copper (cu) and lead finish tin (sn). 12. for solder paste use a standard sac alloy such as sac 305, type 3 or higher. 13. below profile is valid for convection reflow only 14. other soldering methods (e.g.vapor phase) are not verified and have to be validated by the customer on his own risk t e m p e r a t u r e [ c ] t i m e [ s e c ] 1 5 0 1 8 0 2 1 7 m a x 2 4 5 m a x 1 2 0 s e c m i n 6 0 s e c m a x 6 0 s e c m i n 3 0 s e c m a x 1 0 - 2 0 s e c 2 4 0 c r a m p u p r a t e m a x 3 c / s e c r a m p d o w n r a t e m a x 6 c / s e c m a x 2 s o l d e r c y c l e s ! p r e h e a t l i q u i d u s p e a k
we - online.com wrth elektronik eisos gmbh & co. kg - data sheet - rev 1.0 26 / 31 wpmdh11 5 2401 / 17101 2402 magi3c power module v drm - variable step down regulator module p hysical dimensions (mm) package type: to263 - 7 recommended soldering pad recommended stencil design solder past e recommendation 150m t h e r m a l p a d
we - online.com wrth elektronik eisos gmbh & co. kg - data sheet - rev 1.0 27 / 31 wpmdh11 5 2401 / 17101 2402 magi3c power module v drm - variable step down regulator module p ackaging reel (mm) 2 0 p
we - online.com wrth elektronik eisos gmbh & co. kg - data sheet - rev 1.0 28 / 31 wpmdh11 5 2401 / 17101 2402 magi3c power module v drm - variable step down regulator module tape (mm) t o 2 6 3 - 7 e p
we - online.com wrth elektronik eisos gmbh & co. kg - data sheet - rev 1.0 29 / 31 wpmdh11 5 2401 / 17101 2402 magi3c power module v drm - variable step down regulator module d ocument history revision date description page 1.0 10 .03.2015 release of f inal version
we - online.com wrth elektronik eisos gmbh & co. kg - data sheet - rev 1.0 30 / 31 wpmdh11 5 2401 / 17101 2402 magi3c power module v drm - variable step down regulator module c autions and warnings the following conditions apply to all goods within the product series of magi3c of wrth elektronik eisos gmbh & co. kg: general: all recommendations according to the general technical specifications of the data - sheet have to be complied with. the usage and operation of the product within ambient conditions which probably alloy or harm the component surface has to be avoided. the responsibility for the applicability of customer specific products and use in a particular customer design is always within t he authority of the customer. all technical specifications for standard products do also apply for customer specific products. residual w ashing varnish agent that is used during the production to clean the application might change the characteristics of t he body, pins or termination. the washing varnish agent could have a negative effect on the long te r m function of the product. direct mechanical impact to the product shall be prevented as the material of the body, pins or termination could flake or in the worst case it could break. as these devices are sensitive to electrostatic discharge customer shall follow proper ic handling procedures. customer acknowledges and agrees that it is solely responsible for compliance with all legal, regulatory and safety - related requirements concerning its products, and any use of wrth elektronik eisos gmbh & co. kg components in its applications, notwithstanding any applications - related information or support that may be provided by wrth elektronik eisos gmbh & co. kg. customer represents and agrees that it has all the necessary expertise to create and implement safeguards which anticipate dangerous consequences of failures, monitor failures and their consequences lessen the likelihood of failures that might cause harm a nd take appropriate remedial actions. customer will fully indemnify wrth elektronik eisos and its representatives against any damages arising out of the use of any wrth elektronik eisos gmbh & co. kg components in safety - critical applications. product s pecific: follow all instructions mentioned in the datasheet, especially: ? the solder profile has to comply with the technical reflow or wave soldering specification, otherwise this will void the warranty. ? all products are supposed to be used before the end of the period of 12 months based on the product date - code . ? violation of the technical product specifications such as exceeding the absolute maximum ratings will void the warranty. ? it is also recommended to return the body to the original moisture proof ba g and reseal the moisture proof bag again. ? esd prevention methods need to be followed for manual handling and processing by machinery.
we - online.com wrth elektronik eisos gmbh & co. kg - data sheet - rev 1.0 31 / 31 wpmdh11 5 2401 / 17101 2402 magi3c power module v drm - variable step down regulator module important notes the following conditions apply to all goods within the product range of wrth elektronik eisos gmbh & co. kg: 1. general customer responsibility some goods within the product range of wrth elektronik eisos gmbh & co. kg contain statements regarding general suitability for certain application areas. these statements about sui tability are based on our knowledge and experience of typical requirements concerning the areas, serve as general guidance and cannot be estimated as binding statements about the suitability for a customer application. the responsibility for the applicabil ity and use in a particular customer design is always solely within the authority of the customer. due to this fact it is up to the customer to evaluate, where appropriate to investigate and decide whether the device with the specific product characteristi cs described in the product specification is valid and suitable for the respective customer application or not. accordingly, the customer is cautioned to verify that the datasheet is current before placing orders. 2. customer responsibility related to sp ecific, in particular safety - relevant applications it has to be clearly pointed out that the possibility of a malfunction of electronic components or failure before the end of the usual lifetime cannot be completely eliminated in the current state of the a rt, even if the products are operated within the range of the specifications. in certain customer applications requiring a very high level of safety and especially in customer applications in which the malfunction or failure of an electronic component coul d endanger human life or health it must be ensured by most advanced technological aid of suitable design of the customer application that no injury or damage is caused to third parties in the event of malfunction or failure of an electronic component. 3. best care and attention any product - specific notes, warnings and cautions must be strictly observed. 4. customer support for product specifications some products within the product range may contain substances which are subject to restrictions in certain jurisdictions in order to serve specific technical requirements. necessary information is available on request. in this case the field sales engineer or the internal sales person in charge should be contacted who will be happy to support in this matter. 5 . product r&d due to constant product improvement product specifications may change from time to time. as a standard reporting procedure of the product change notification (pcn) according to the jedec - standard we inform about minor and major changes. in ca se of further queries regarding the pcn, the field sales engineer or the internal sales person in charge should be contacted. the basic responsibility of the customer as per section 1 and 2 remains unaffected. 6. product life cycle due to technical progre ss and economical evaluation we also reserve the right to discontinue production and delivery of products. as a standard reporting procedure of the product termination notification (ptn) according to the jedec - standard we will inform at an early stage abou t inevitable product discontinuance. according to this we cannot guarantee that all products within our product range will always be available. therefore it needs to be verified with the field sales engineer or the internal sales person in charge about the current product availability expectancy before or when the product for application design - in disposal is considered. the approach named above does not apply in the case of individual agreements deviating from the foregoing for customer - specific products. 7. property rights all the rights for contractual products produced by wrth elektronik eisos gmbh & co. kg on the basis of ideas, development contracts as well as models or templates that are subject to copyright, patent or commercial protection supplied to the customer will remain with wrth elektronik eisos gmbh & co. kg. wrth elektronik eisos gmbh & co. kg does not warrant or represent that any license, either expressed or implied, is granted under any patent right, copyright, mask work right, or othe r intellectual property right relating to any combination, application, or process in which wrth elektronik eisos gmbh & co. kg components or services are used. 8. general terms and conditions unless otherwise agreed in individual contracts, all orders a re subject to the current version of the genera l terms and conditions of wrth elektronik eisos group, last version available at www.we - online.com .

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