for technical support and more information, see inside back cover or visit www.ti.com standard application features ? 13-a output current ? single device: 3.3v/5v i nput ? 90% eff iciency (pt6715) ? on/off standby function ? differential remote sense ? adjustable output voltage ? short circuit protection ? 17-pin space-saving package ? solderable copper case pin-out information pin function 1v o adjust 2 stby* 3 do not connect 4v in 5v in 6v in 7 remote sense gnd 8 gnd 9 gnd 10 gnd 11 gnd 12 gnd 13 v out 14 v out 15 v out 16 v out 17 remote sense v out * for further information, see application notes. description the pt6715 series of power modules are a 13-a rated i ntegrated switching regulator (isr), housed in a 17-pin space saving solderable copper package. these modules will operate off either a 5v or 3.3v input power bus to provide a high- performance low-voltage power source for the industrys latest high-speed, dsps, ps, and bus drivers. this allows for the easy integration of these new low-voltage ics into existing 3.3v or 5v systems with- out re-designing the central power supply. the series includes the standard output bus voltage options, ranging from 1.0v to 3.3v. each output voltage option has a limited adjust range. features include a standby (on/off) function, a diff erential output remote sense, and short circuit protection. the modules are available in both through- hole and surface mount configurations. pt series suffix (pt1234 x ) case/pin order package configuration suffix code * vertical n (emd) horizontal a (ema) smd c (emc) * previously known as package styles 1340/50. (reference the applicable package code drawing for the dimensions and pc board layout) ordering information pt6715 = 3.3 volts pt6716 = 2.5 volts ? PT6717 = 1.8 volts ? pt6718 = 1.5 volts ? pt6719 = 1.2volts ? pt6714 = 1.0volts ? 3.3v input bus capable pt6715 series 13-a 5v/3.3v-input adjustable integrated switching regulator c in = required 1000f electrolytic c out = required 330f electrolytic l1 = optional 1h input choke pt6715 4 - 6 8 - 12 13 - 16 1h c out + c in + 7 17 l1 load remote sense (+) remote sense (-) 21 gnd v out vout adjust v in gnd stby* slts100b (revised 9/5/2002)
for technical support and more information, see inside back cover or visit www.ti.com pt6715 series 13-a 5v/3.3v-input adjustable integrated switching regulator specifications (unless otherwise stated, t a =25c, v in =5v, c in =1,000f, c out =330f, and i o =i o max) pt6715 series characteristic symbol conditions min typ max units output current i o t a =+60c, 200lfm 0.1 (1) 13 a t a =+25c, natural convection 0.1 (1) 13 input voltage range v in over i o range v o 2.5v 4.5 5.5 vdc v o 1.8v 3.1 5.5 set point voltage tolerance v o tol 1 1.5 (2) %v o temperature variation reg temp C40 t a +85c, i o =i o min 0.5 %v o line regulation reg line over v in range 5 10 mv load regulation reg load over i o range 5 10 mv total output voltage variation ? v o tot includes set-point, line, load, 23%v o C40 t a +85c efficiency i o =9a v o =3.3v 91 v o =2.5v 88 v o =1.8v 85 % v o =1.5v 83 v o =1.2v 78 v o =1.0v 75 v o ripple (pk-pk) v r 20mhz bandwidth 35 mv pp transient response t tr 5a/s load step, 50% to 100% i o max 50 s ? v tr v o over/undershoot 100 mv over-current threshold i trip reset, followed by auto-recovery 20 32 a switching frequency ? s over v in and i o range 300 350 400 khz remote on/off (pin 2) referenced to Cv in (pin 8) input high voltage v ih +2.0 open (3) v input low voltage v il C0.1 +0.4 input low current i il C0.5 C ma standby input current i in standby pins 2 & 8 connected 25 35 ma external output capacitance c out see application schematic 330 15,000 f external input capacitance c in see application schematic 1,000 f operating temperature range t a over v in range -40 (4) +85 (5) c storage temperature t s -40 +125 c reliability mtbf per bellcore tr-332 5.4 10 6 hrs 50% stress, t a =40c, ground benign mechanical shock per mil-std-883d, method 2002.3, 500 gs 1ms, half-sine, mounted to a fixture mechanical vibration mil-std-883d, method 2007.2, suffix a 15 (6) gs 20-2000hz, soldered in pcb suffix c 20 (6) weight 23 grams flammability materials meet ul 94v-0 notes: (1) the isr will operate at no load with reduced specifications. (2) if the remote sense feature is not being used, connect the remote sense gnd (pin 7) to gnd (pin 8) for optimum output voltag e accuracy. (3) the stby* control (pin 2) has an internal pull-up and if it is left open circuit the module will operate when input power is applied. the open-circuit voltage is typcially 12.6v, and maybe as high as 15v. consult the related application note for other interface considerations. (4) for operation below 0c, cin and cout must have stable characteristics. use either low esr tantalum or oscon? capacitors. (5) see safe operating area curves or contact the factory for the appropriate derating. (6) the case pins on through-hole package types (suffixes n & a) must be soldered. for more information consult the applicable p ackage outline drawing. input/output capacitors: the pt6715 series requires a 1,000f electrolytic (or tantalum) capacitor at the input and 330f at the output for proper oper ation in all applications. in addition, the input capacitance, cin, must be rated for a minimum of 2arms of ripple current. for transien t or dynamic load applications additional capacitance may be necessary. for more information consult the related application note on capacitor recommendations . input inductor: an input filter inductor is optioinal for most applications. the inductor must be sized to handle 10adc with a typical value o f 1h.
for technical support and more information, see inside back cover or visit www.ti.com note a: characteristic data has been developed from actual products tested at 25c. this data is considered typical data for the conve rter. note b: soa curves represent the conditions at which internal components are at or below the manufacturers maximum operating tempera tures typical characteristics characteristic data; v in =5.0v (see note a) characteristic data; v in =3.3v (see note a) efficiency vs output current efficiency vs output current power dissipation vs output current power dissipation output current safe operating area; 3.3v (see note b) safe operating area; v in =5v (see note b) output ripple vs output current output ripple vs output current pt6715 series 13-a 5v/3.3v-input adjustable integrated switching regulator 20 30 40 50 60 70 80 90 024681012 iout ( a ) ambient temperature (c) 200lfm 120lfm 60lfm nat conv airflow 20 30 40 50 60 70 80 90 024681012 iout ( a ) ambient temperature ( c) 200lfm 120lfm 60lfm nat conv airflow 60 65 70 75 80 85 90 95 100 024681012 iout ( a ) efficiency - % 3.3v 2.5v 1.8v 1.5v 1.2v 1.0v v out 0 10 20 30 40 50 60 024681012 iout ( a ) ripple - mv 2.5v 3.3v 1.8v 1.5v 1.2v 1.0v v out 0 1 2 3 4 5 6 7 024681012 iout ( a ) pd - watts 1.2v 3.3v 2.5v 1.8v 1.0v 1.5v v out 60 65 70 75 80 85 90 95 100 024681012 iout ( a ) efficiency - % 1.8v 1.5v 1.2v 1.0v v out 0 10 20 30 40 50 60 024681012 iout ( a ) ripple - mv 1.5v 1.8v 1.2v 1.0v v out 0 1 2 3 4 5 6 7 024681012 iout ( a ) pd - watts 1.2v 1.0v 1.8v 1.5v v out
for technical support and more information, see inside back cover or visit www.ti.com application notes using the on/off standby function on the pt6705/6715 excalibur? series of isrs the pt6705 and pt6715 regulator series are non- programmable (preset voltage) versions of the pt6701, pt6702, and pt6703 products. the pt6705/6715 series of products incorporate an on/ off standby function, which may be used disable the regulator output. the standby function is provided by the stby* control, pin 2. if pin 2 is left open-circuit the regulator operates normally, and provides a regulated output when a valid supply voltage is applied to v in (pins 4C6) with respect to gnd (pins 8C12). if pin 2 is connected to ground, the regulator output is disabled and the input current drawn by the isr typically drops to its idle value 1 . the standby control may also be used to hold-off the regulator output during the period that input power is applied. pin 2 is ideally controlled with an open-collector (or open-drain) discrete transistor (see figure 1-1 2 ). the open-circuit voltage will be approximately 12.0v. table 1-1 gives the circuit parameters for this control input. table 1-1 standby control requirements (3, 4) parameter min typ max enable (v ih ) open circuit disable (v il ) C0.2v 0.4v i stby (pin 2 =ground) C0.5ma v stby (open circuit) 12.0v 15.0v figure 1-1 turn-on time: in the circuit of figure 1-1, turning q 1 on applies a low voltage to pin 2 and disables the regulator output. correspondingly, turning q 1 off removes the low- voltage signal and enables the output 5 . once enabled, the output will typically experience a 1 0C15ms delay followed by a predictable ramp-up of voltage. the regulator pro- vides a fully regulated output within 40ms. the waveforms of figure 1-2 show the rise of both the output voltage and input current for a pt6706 (2.5v). the turn off of q 1 corresponds to the rise of v stby . the waveform was measured with a 5-vdc input voltage and an 8-adc load. figure 1-2 pt6705 & pt6715 series pt6705 sns(+) sns(-) v out gnd vo(adj) v in stby* v bias 13?16 17 7 1 8?12 4,5,6 23 c out + c in + stby +v in gnd gnd v out q1 bss138 +12v (pt6705 series only) notes: 1. when the regulator output is disabled the current drawn from the +v in input source is typically reduced to 25ma for the pt 671x series, and to less than 100a for the pt670x series. 2. figure 1-1 is an application schematic for the pt670x models. this shows the requirement for an external +12v bias supply. the +12v bias is not required for the pt671x models. for more details, consult the applicable product data sheet. 3. the standby control input requires no external pull-up r esistor. the open-circuit voltage of the stby* pin is approximately 12.0v. 4. the standby control input is not compatible with ttl devices that incorporate a totem-pole output drive. use only a true open-collector device, preferably a discrete bipolar transistor (or mosfet). to ensure the regulator output is disabled, the control pin must be pulled to less than 0.4vdc with a low-level 0.5ma sink to ground. 5 after q 1 in figure 1-1 is turned off and before the output begins to rise, the regulator output will assert a low impedance to ground. if an external voltage is applied to the output it will sink current and possibly over-stress the part. /div vo (1v / div) iin (2a / div) vstby (10v / div)
application notes for technical support and more information, see inside back cover or visit www.ti.com pt6705/pt6715 series adjusting the output voltage of the pt6705 and pt6715 excalibur ? series of regulators both the pt6705 and pt6715 series isrs are non- programmable versions of the pt6700 excalibur? family of converters. the output voltage of these regula- tors have a fixed output voltage, which may be adjusted higher or lower than the factory pre-set voltage using a single external resistor. table 2-1 gives the adjustment range for each model in the series as v a (min) and v a (max). adjust up: an increase in the output voltage is obtained by adding a resistor r 2 , between pin 1 (v o adjust) and pin 7 (remote sense gnd). adjust down: add a resistor (r 1 ) , between pin 1 (v o adjust) and pin 17 (remote sense v out ). refer to figure 2-1 and table 2-2 for both the placement and value of the required resistor, either (r 1 ) or r 2 as appropriate. figure 2-1 notes: 1. use only a single 1% resistor in either the (r 1 ) or r 2 location. place the resistor as close to the regulator as possible. 2. never connect capacitors from v o adjust to either gnd, v out , or the remote sense pins. adding capacitance to the v o adjust pin will affect the stability of the isr. 3. if the remote sense feature is not being used, pin 7 must be connected to pin 8 for optimum output voltage accuracy. correspondingly the resistors (r 1 ) and r 2 may be then be connected from v o adjust to either v out or gnd respectively. l o a d (r1) adj down r2 adjust up c out + c in + com +5v vo com pt6705/pt6715 sns(+) sns(-) v out gnd vo(adj) v in stby* v bias 13 ? 16 17 7 1 8 ? 12 4,5,6 23 bias (req'd for pt6705) the values of (r 1 ) [adjust down], and r 2 [adjust up], can also be calculated using the following formulas. r o ( v a Cv r ) (r 1 ) = v o C v a C r s k ? r o v r C r s k ? r 2 = v a C v o where: v o = original output voltage v a = adjusted output voltage v r = reference voltage (table 2-1) r o = resistance constant (table 2-1) r s = internal series resistance (table 2-1) 4. the pt6705 series requires a 12v external bias voltage in order to operate (see data sheet). an external bias voltage is not required for the pt6715 series. 5. adjusting the output voltage of the pt6705 and pt6715 (3.3v output) higher than the factory pre-set voltage may require an increase in the minimum input voltage. these two models must comply with the following requirements for v in (min). pt6705: v in (min) = (v a + 1)v pt6715: v in (min) = (v a + 1)v or 4.5v, whichever is greater.
for technical support and more information, see inside back cover or visit www.ti.com application notes continued pt6705/pt6715 series series pt # 12v bias (4) ?? pt6708 pt6707 no bias pt6714 pt6719 pt6718 PT6717 v o (nom) 1.0v 1.2v 1.5v 1.8v v a (req ? d) 0.950 (5.1)k ? 0.975 (45.1)k ? 1.000 1.025 295.0k ? 1.050 135.0k ? 1.075 81.8k ? 1.100 55.1k ? (5.1)k ? 1.125 39.1k ? (18.4)k ? 1.150 28.4k ? (45.1)k ? 1.175 20.8k ? (125.0)k ? 1.200 15.1k ? 1.225 10.7k ? 295.0k ? 1.250 7.1k ? 135.0k ? 1.275 4.2k ? 81.8k ? 1.300 1.8k ? 55.1k ? 1.325 39.1k ? 1.350 28.4k ? 1.375 20.8k ? 1.400 15.1k ? 1.425 10.7k ? 1.450 7.1k ? 1.475 4.2k ? (32.1)k ? 1.50 1.8k ? 1.55 204.0k ? 1.60 77.1k ? 1.65 34.8k ? 1.70 13.6k ? 1.75 (46.1)k ? 1.80 1.85 204.0k ? 1.90 77.1k ? 1.95 34.8k ? 2.00 13.6k ? r 1 = (blue) r 2 = black table 2-1 adjustment range and formula parameters series pt # 12v bias (4) ?? pt6708 pt6707 pt6706 pt6705 no bias pt6714 pt6719 pt6718 PT6717 pt6716 pt6715 v o (nom) 1.0 1.2 1.5 1.8 2.5 3.3 v a (min) 0.94 1.09 1.47 1.75 2.25 2.75 v a (max) 1.32 1.52 1.73 2.0 2.85 3.75 v r (v) 0.8 0.8 1.27 1.27 1.27 1.27 r o (k ? ? ? ? ? ) 10.0 10.0 10.2 10.0 10.0 10.0 r s (k ? ? ? ? ? ) 24.9 24.9 49.9 49.9 33.2 24.9 table 2-2 adjustment resistor values series pt # 12v bias (4) pt6706 pt6705 no bias pt6716 pt6715 v o (nom) 2.5v 3.3v v a (req ? d) 2.25 (6.0)k ? 2.3 (18.3)k ? 2.35 (38.8)k ? 2.4 (79.8)k ? 2.45 (203.0)k ? 2.5 2.55 221.0k ? 2.6 93.8k ? 2.65 51.5k ? 2.7 30.3k ? 2.75 17.6k ? 2.8 9.1k ? 2.85 3.1k ? 2.75 (2.0)k ? 2.80 (5.7)k ? 2.85 (10.2)k ? 2.90 (15.9)k ? 2.95 (23.1)k ? 3.00 (32.8)k ? 3.05 (46.3)k ? 3.10 (66.6)k ? 3.15 (100.0)k ? 3.20 (168.0)k ? 3.25 (371.0)k ? 3.30 3.35 229.0k ? 3.40 102.0k ? 3.45 59.8k ? 3.50 ( note 5) 38.6k ? 3.55 25.9k ? 3.60 17.4k ? 3.65 11.4k ? 3.70 6.9k ? 3.75 3.3k ?
application notes for technical support and more information, see inside back cover or visit www.ti.com table 3-1 capacitors characteristic data capacitor recommendations for the non-isolated 13-a excalibur? series of regulators input capacitors the recommended input capacitor(s) is determined by the 2 ampere (rms) minimum ripple current rating and 1,000f minimum capacitance. ripple current and 100m ? esr (equivalent series resistance) values are the major considerations, along with temperature, when selecting the pr oper capacitor. tantalum capacitors have a recommended m inimum voltage rating of 2 the input voltage; 10v for +5v operation. output capacitors the minimum required output capacitance is 330f with a maximum esr 100m ? . failure to observe this requirement may lead to regulator instability or oscilla- tion. electrolytic capacitors have poor ripple performance at frequencies greater than 400khz, but excellent low frequency transient response. above the ripple frequency ceramic decoupling capacitors are necessary to improve the transient response and reduce any high frequency noise components apparent during higher current excur- sions. preferred low esr type capacitor part numbers are identified in table 3-1 below. tantalum characteristics tantalum capacitors with a minimum 10v rating are recommended for the input bus, but only the avx tps, sprague 594/595, or kemet t495/t510 series. these types are recommended over many others due to their higher surge current, power dissipation and ripple cur- rent cap ability. as a caution, the taj series by avx is not recommended. this series exhibits considerably higher esr, reduced power dissipation and lower ripple current capability. the taj series is also less reliable compared to the tps series when determining power dissipation capability. tantalum capacitors are highly recommended in applications where ambient tempera- tures fall below 0c. capacitor table table 3-1 identifies the characteristics of capacitors from a number of vendors with acceptable esr and ripple cur- rent (rms) ratings. the suggested minimum quantities per regulator for both the input and output buses are iden- tified. this is not an extensive capacitor list. capacitors from other vendors are available with comparable specifications. those listed are for guidance. the rms ripple curr ent rating and esr (equivalent series resistance at 100khz) are the critical parameters to insure both optimum regulator performance and long capacitor life. pt6701/pt6702/pt6703, pt6705 & pt6715 series r o d n e v r o t i c a p a c s e i r e s s c i t s i r e t c a r a h c r o t i c a p a cy t i t n a u q g n i k r o w e g a t l o v ) f ( e u l a vt n e l a v i u q e ) r s e ( e c n a t s i s e r s e i r e s m u m i x a m c 5 8 e l p p i r ) s m r i ( t n e r r u c l a c i s y h p ) m m ( e z i s t u p n i s u b t u p t u o s u b r e b m u n r o d n e v c i n o s a n a p ) t n u o m e c a f r u s ( k f / c f ) l a i d a r ( c f v 5 2 v 5 3 v 5 2 v 5 2 0 0 0 1 0 3 3 0 3 3 0 0 2 1 8 3 0 . 0 ? 0 8 0 . 0 ? 0 9 0 . 0 ? 8 3 0 . 0 ? a m 0 0 0 2 a m 0 5 8 a m 5 5 7 a m 0 0 0 2 8 1 5 . 6 1 0 1 2 . 0 1 0 1 5 . 2 1 8 1 5 1 1 1 1 1 1 1 n 2 0 1 e 1 c f v e e p 1 3 3 v 1 k f v e e 1 3 3 e 1 c f u e e s 2 2 1 e 1 c f u e e n o c - i m e h c d e t i n u ) l a i d a r ( v x l ) t n u o m e c a f r u s ( x f v 5 2 v 5 3 v 6 1 v 0 1 0 3 3 0 0 2 1 0 0 7 2 0 8 6 4 8 0 . 0 ? 8 2 0 . 0 ? 8 2 0 . 0 ? 5 1 0 . 0 2 ? 7 0 0 . 0 = ? a m 5 2 8 a m 0 7 0 2 a m 0 7 0 2 a m 0 0 0 7 > 0 1 6 1 6 1 5 2 6 1 5 2 0 1 5 . 0 1 1 1 2 1 1 1 1 l l 6 1 x 0 1 m 1 3 3 b v 5 2 v x l l l 5 2 x 6 1 m 2 2 1 b v 5 3 v x l l l 5 2 x 6 1 m 2 7 2 b v 6 1 v x l ) n o c - s o ( m 0 8 6 x f 0 1 n o c i h c i n s e i r e s l p s e i r e s m p v 5 2 v 5 2 v 5 2 0 3 3 0 0 2 2 0 3 3 5 9 0 . 0 ? 8 2 0 . 0 ? 5 9 0 . 0 ? a m 0 5 7 a m 0 5 0 2 a m 0 5 7 0 1 5 1 8 1 0 2 0 1 5 1 1 1 1 1 6 h p m 1 3 3 e 1 l p u 6 h h m 2 2 2 e 1 l p u 6 h p m 1 3 3 e 1 m p u : n o c - s o s s ) t n u o m e c a f r u s ( p v s v 0 1 v 0 1 0 3 3 0 3 3 5 2 0 . 0 ? 8 0 0 . 0 = 3 ? 5 2 0 . 0 ? 8 0 0 . 0 = 3 ? a m 0 0 0 7 > a m 0 0 0 7 > 0 1 5 . 0 1 3 . 0 1 1 1 3 3 1 1 m 0 3 3 s s 0 1 0 3 3 p v s 0 1 m u l a t a n a t x v a s e i r e s s p t ) t n u o m e c a f r u s ( v 0 1 v 0 1 0 3 3 0 3 3 0 0 1 . 0 ? 4 3 0 . 0 = 3 ? 0 6 0 . 0 ? 0 2 0 . 0 = 3 ? a m 0 0 5 3 > a m 0 0 5 3 > l 0 . 7 w 7 9 . 5 h 5 4 . 3 3 3 1 1 0 0 1 0 r 0 1 0 m 7 3 3 v s p t 0 6 0 0 r 0 1 0 m 7 3 3 v s p t m u l a t n a t e u g a r p s / y a h s i v s e i r e s d 4 9 5 / d 5 9 5 ) t n u o m e c a f r u s ( v 0 1 v 0 1 0 3 3 0 8 6 5 4 0 . 0 ? 5 1 0 . 0 = 3 ? 0 9 0 . 0 ? 4 = 3 2 0 . 0 ? a m 0 0 6 4 > a m 0 0 5 2 > l 2 . 7 w 0 . 6 h 5 . 3 3 2 1 1 t 2 r 0 1 0 0 x 7 3 3 d 4 9 5 t 2 r 0 1 0 0 x 7 8 6 d 5 9 5 m u l a t n a t t e m e k s e i r e s 5 9 4 t / 0 1 5 t ) t n u o m e c a f r u s ( v 0 1 v 0 1 0 3 3 0 2 2 5 3 0 . 0 ? 2 1 0 . 0 = 3 ? 0 7 0 . 0 ? 5 3 0 . 0 = 5 ? a m 0 0 0 5 > a m 0 0 0 3 > l 3 . 7 w 3 . 4 h 0 . 4 3 5 1 2 s a 0 1 0 m 7 3 3 x 0 1 5 t s a 0 1 0 m 7 2 2 x 5 9 4 t p a c s o p o y n a s ) t n u o m e c a f r u s ( b p t v 0 10 2 20 4 0 . 0 ? 8 0 0 . 0 = 5 ? a m 0 0 0 3 >l 2 . 7 w 3 . 4 h 1 . 3 52 m 0 2 2 b p t 0 1
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