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MYBSP01201ABF isolated dc - dc converter for poe pd http://www.murata.com/products/power features product overview t he mybsp 01201 abf is an isolated, regulated, dc - dc converter for poe pd that has an input range of 37 - 57 vdc with a typical efficiency of 84 % , and full 2250 volt dc isolation . the mybsp 01201 abf is ideal for ieee 802 . 3 af compliant devices . module has self - protection features . these include input undervoltage lockout and output current limit . and the module has detection and classification for compliant ieee 802 . 3 af . ? support ieee802.3af class0 ? 12w dc - dc converter ? 37 - 57v input voltage range ? 14.8 x 26 x 6.2mm size ? 84% efficiency (typical) ? surface mount module ? 2250vdc input - output isolation ? operating temperature range - 40 to + 85 c figure 1. simplified block diagram typical topology is shown. export control code : x0863 document no : dc - r170086 isolated dc - dc converter MYBSP01201ABF 1 2 3 4 flyback controller load equipment ethernet pulse transformer utp cable to pse data pd equipment ieee802.3af compliant pd controller ? hot swap ? poe detection / classification power + data power typical unit MYBSP01201ABF a01 page 1 of 12
MYBSP01201ABF isolated dc - dc converter for poe pd http://www.murata.com/products/power part number structure performance specifications summary and ordering guide model number output input efficiency (%) package (mm) vout ( vdc ) iout ( a,max .) power (w) r/n typ. ( mvp - p) regulation typ. vin nom. ( vdc ) range ( vdc ) iin , full load typ.(a) line (%) load (%) min. typ. MYBSP01201ABF 12 1 12 150 0.4 0.4 48 37 - 57 0.3 81 84 14.8 x 26 x 6.2 1. please refer to the part number structure for additional ordering information and options. 2. all specifications are at nominal line voltage, full load, +25 c unless otherwise stated. murata standard dc - dc convertor 012 01 a b f isolated dc - dc convertor for poe pd ieee802.3xx output voltage 012 = 12v output current 01 = 1a nominal input voltage a = 48v nominal pin type b = surface mount pin internal control code my bsp MYBSP01201ABF a01 page 2 of 12
MYBSP01201ABF isolated dc - dc converter for poe pd http://www.murata.com/products/power absolute maximum ratings conditions minimum typical / nominal maximum units input voltage, continuous 0 57 vdc input voltage, transient 100ms max. duration 60 vdc isolation voltage input to output, leak current 1ma max for 1minute at +25 c/60%rh. 2250 vdc output power 0 12 w output current current - limited, no damage, short - circuit protected 0 1 a storage temperature range vin = zero (no power) - 40 90 c absolute maximums are stress ratings. exposure of devices to greater than any of these conditions may adversely affect long - term reliability. proper operation under conditions other than those listed in the performance/functional specifications table is not implied or recommended. input operating voltage range slew rate less than 30v/ s 37 48 57 vdc start - up threshold rising input voltage 34.9 37.5 40.1 vdc undervoltage shutdown falling input voltage 28.9 31 33.1 vdc internal filter type pi input current full load conditions vin = nom., iout = max 0.3 a low line input current vin = min., iout = max. 0.4 a on resistance of internal hotswap 0.48 resistance for detection vin=2.7 to 10.1v 25 k classification current vin=14.5 to 20.5v 2 ma general and safety efficiency vin = 48v, full load 81 84 % isolation isolation voltage input to output, leak current 1ma max for 1minute at +25 c/60%rh. 2250 vdc insulation safety rating functional isolation capacitance 1500 pf calculated mtbf telcordia sr - 332, issue 1, class 3, ground fixed, ta = +25 c 4406 hours x 10 3 dynamic characteristic fixed switching frequency *1 vin = 48v, iout = max 110 khz vout rise time from 10% - 90% of vout 4 ms dynamic load response 50 - 100 - 50% load step to 1% of vout 500 sec dynamic load peak deviation same as above 100 mvdc functional specifications, MYBSP01201ABF MYBSP01201ABF a01 page 3 of 12
MYBSP01201ABF isolated dc - dc converter for poe pd http://www.murata.com/products/power output conditions minimum typical / nominal maximum units total output power 0 12 w voltage nominal output voltage iout = 0.1a to max *2 11.4 12 12.6 vdc overvoltage protection none vdc current output current range *3 0 1 a current limit inception 1.05 a short circuit protection method non - latching regulation line regulation vin=min to max., vout =nom., full load 0.4 % of vout load regulation iout = 0.1a to max. 0.4 % of vout ripple and noise 150 mhz bw, cout =0.1f mlcc paralleled with 10f and 100 f 150 300 mv pk - pk maximum capacitive loading low esr 100 400 f mechanical outline dimensions l x w x h 14.8 x 26 x 6.2 mm weight 4.5 grams pin diameter 1.6 mm pin material copper alloy environmental operating ambient temperature range - 40 85 c storage temperature vin = zero (no power) - 40 90 c electromagnetic interference conducted, en55022/cispr22 external filter is required a class rohs rating rohs - 6 functional specifications, MYBSP01201ABF(cont.) specification notes unless otherwise noted, all specifications are typical at nominal input voltage, nominal output voltage and full load. general conditions are +25 c ambient temperature, near sea level altitude, natural convection airflow. all models are tested and specified with external parallel 0.1f and 10f and 100 f output capacitors (see technical notes). *1 variable frequency operation. *2 maximum output voltage is 14.4v if iout is less than 0.1a. *3 minimum output current must be 0.1a if your application applies maintain power signature(mps) by ieee802.3af. please check with your application. MYBSP01201ABF a01 page 4 of 12
MYBSP01201ABF isolated dc - dc converter for poe pd http://www.murata.com/products/power performance data, MYBSP01201ABF efficiency vs. line voltage and load current (ta=+25 c) load regulation (ta=+25 c) vout start - up (vin=48v, iout =1a, ta=+25 c) output ripple and noise (vin=48v, iout =1a, ta=+25 c ) transient response (vin=48v, iout =0.5a to 1a to 0.5a , ta=+25 c) ch1= vout , 200mv/div, ch2= iout , 500ma/div thermal derating unit under test (uut) is covered by acrylic box to avoid airflow. (vin=48v, see technical notes) 5 v/div 2 ms/div 100mv/div 10 s/div 1 ms/div MYBSP01201ABF a01 page 5 of 12
MYBSP01201ABF isolated dc - dc converter for poe pd http://www.murata.com/products/power performance data, MYBSP01201ABF(cont.) conduction noise (vin=48v, iout =1a, ta=+25 c) with external input filter conduction noise (vin=48v, iout =1a, ta=+25 c) with external input filter MYBSP01201ABF a01 page 6 of 12
MYBSP01201ABF isolated dc - dc converter for poe pd http://www.murata.com/products/power mechanical specifications recommended footprint (top view) input / output connections pin designation function pin size 1 +vin positive input voltage 1 .6 2 - vin negative input voltage 1. 6 3 - vout negative output voltage 1. 6 4 + vout positive output voltage 1. 6 marking (1) mfg id (2) model number ee (3) lot no. ?? production factory mark production year (last 1 digit in year) production month 1,2,3,9,x,y,z [ unit:mm ] MYBSP01201ABF a01 page 7 of 12 1 1 . 0 2 3 . 0 4 - 2 . 4 1 4 . 8 2 6 . 0 2 3 . 0 6 . 0 * a v o i d p l a c i n g p a t t e r n l a y o u t i n h a t c h e d a r e a t o i n s u l a t e b e t w e e n p a t t e r n a n d d c - d c c o n v e r t e r . 1 p i n [ u n i t : m m ] 6 . 2 0 . 6 2 6 . 0 0 . 5 ( 1 . 5 ) 2 3 0 . 2 5 1 4 . 8 0 . 5 1 1 . 0 0 . 2 5 ( 1 . 9 ) 0 . 1 5 t o p v i e w b o t t o m v i e w 3 1 2 4 e e ( 5 . 6 ) ( 1 4 . 6 5 ) p i c k u p p o i n t 6 . 0
MYBSP01201ABF isolated dc - dc converter for poe pd http://www.murata.com/products/power packaging information (surface mount, msl rating 1) packaging form tray specification pieces of contained products per corrugated box. maximum contained products pieces 200 pcs/corrugated box . further plural sheets of corrugated cardboard are placed on the top of the tray cover according to number of contained trays in order to full up the space in a corrugated box. general tolerance : 0 . 8 unit mm MYBSP01201ABF a01 page 8 of 12
MYBSP01201ABF isolated dc - dc converter for poe pd http://www.murata.com/products/power packaging information (surface mount, msl rating 1) packaging form tray specification marking on the box ? murata parts number ? quantity ? inspection no . ? rohs - y murata products label empty tray trays containing products maximum 5 trays corrugated cardboard trays are alternately stacked by 180 degree rotation . MYBSP01201ABF a01 page 9 of 12
MYBSP01201ABF isolated dc - dc converter for poe pd http://www.murata.com/products/power over current protection over current protection operates with a controller circuit failure or over - load condition. after rejected the abnormal mode, dc - dc converter will automatically restart. however output short voltage affect long - term reliability. external input capacitor do not connect any capacitor between positive input and negative input to avoid large inrush current. it is one of the requirements of ieee802.3af standard. test circuit the initial values in functional specification are measured in the following test circuit. c1 : ceramic capacitor 100f rl : electronic load device : ln - 1000a - g7 keisoku giken equivalent vin : dc power supply :model hp6675a keysight equivalent v : digital multimeter :model hp34401a keysight equivalent when deviating from the above, dc - dc converter may operate abnormally. it should be fully confirmed on your board before use. ripple noise test output ripple noise is measured using designated external output components, circuits and layout as shown below. c1 : ceramic capacitor 100f c2 : ceramic capacitor 0.1f c3 : ceramic capacitor 10f conduction noise the external input filter is installed and the circuit diagram is shown below. technical notes thermal derating condition the output current is limited by the derating curve. the derating curve in this datasheet illustrate typical operation under a variety of conditions. dc - dc converter is tested on a 101.6x188mm, 2 layers copper evaluation board at vin=48v. the unit under test (uut) is set up as shown below . uut is covered by acrylic box to avoid airflow . the temperature measurement points are shown below table. the temperature of measurement points should not exceed the maximum temperatures in the below table. acrylic box position description max temperature p1 ic t p1max = 110 c p2 diode t p2max = 124 c p3 transformer pattern t p3max = 125 c dc - dc converter 48 v resistive load lisn (knw407) input external c ommon mode choke : pe - 53913 nl(pulse) 22 0 h 1 0 000 pf 1 0 000 pf 100 f MYBSP01201ABF a01 page 10 of 12 u n i t u n d e r t e s t ( u u t ) 1 0 1 . 6 m m 1 8 8 . 0 m m 1 p i n t o p v i e w 1 p i n p 1 ( f e t ) p 1 ( f e t ) p 1 ( i c ) p 2 ( d i o d e ) p 3 ( t r a n s f o r m e r p a t t e r n ) rl vin dc - dc converter vin(+) vout(+) vin( - ) vout( - ) 10m 1 0 m 1 2 3 4 c 1 c 2 5 0 m m d c - d c c o n v e r t e r c 3 l o a d 1 . 5 m 5 0 c o a x i a l c a b l e o s c i l l o s c o p e t r c - 5 0 f t e r m i n a t i n g r e s i s t a n c e b w = 1 5 0 m h z c 1
MYBSP01201ABF isolated dc - dc converter for poe pd http://www.murata.com/products/power detection and hardware classification dc - dc converter implements ieee 802.3af compliant detection and hardware classification. when dc - dc converter(pd) is connected to pse, the pse applies two voltages in the range of 2.8 v to 10 v and measures the corresponding current . connection to pd is detected by measured current.( detection) after detection , the pse applies voltage in the range of 15.5 v to 20.5 v and measures the corresponding current. pd is classified by measured current.(hardware classification ) please check with your application . smt reflow soldering guidelines the surface - mount reflow solder profile is shown below. this graph should be used only as a guideline. reflow soldering profiles : jedec ipc/jede j - std - 020d do not vibrate for the products on reflow. please need to take care temperature control because mounted parts may come off if the product is left under the high temperature. do not mount on backside of the board. many other factors influence the success of smt reflow soldering. since your production environment may differ, please thoroughly review these guidelines with your process engineers. functional specifications please contact murata sales before using this product for the applications listed below. these are applications that require very high reliability of prevention of defects which might directly cause damage to third partys life, body, or property. 1. aircraft equipment 2. aerospace equipment 3. undersea equipment 4. power plant control equipment 5. medical equipment 6. transportation equipment (cars, buses, trucks, trains, ships, etc.) 7. traffic signal equipment 8. disaster prevention /crime prevention equipment 9. data - processing equipment 10. application of similar complexity and /or reliability listed as above. storage please store this product in an environment where the temperature/humidity is stable in the range 0 to 40 c/10 to 75%rh and no direct sunlight. use the product within 6 months after delivery. please avoid storage conditions where humidity and temperature change rapidly, as that may cause condensation on the product, which might degrade the quality of the product. please do not store the product environments that are dusty, in direct exposure to sea breeze, or in an atmosphere containing corrosive gas (cl2, nh3, so2, nox and so on). operational environment and operational conditions this product is not chemical - proof or rust - proof. in order to prevent this product from leakage of electricity and/or abnormal temperature increase, do not use the product under the following circumstances: (1) in an atmosphere containing corrosive gas (cl2, nh3, so2, nox and so on). (2) in a dusty place. (3) in a place exposed to direct sunlight. (4) in such a place where water splashes or in such a humid place where water condenses. (5) in a place exposed to sea breeze. (6) in any other places similar to the above (1)through (5). operational conditions please use the product within specified values (power supply, temperature, input, output and load condition etc.). input voltage drops for line impedance, so please make sure that input voltage is within in specified values. if the product is used over the specified values, it may damage the product, reduce the quality, and even if the products can endure the condition for short time, it may cause degradation of the reliability. soldering temperature 245 c +0/ - 5 c soldering time 30 seconds, 240 c - 245 c heating time 60 150 seconds, 217 c min. preheat time 60 120 seconds, 150 c - 200 c programming rate 3 c / sec.max., 217 c - 245 c descending rate 6 c / sec.max. total soldering time 8 minutes max ., 25 c - 245 c time 1time MYBSP01201ABF a01 page 11 of 12 60 - 150 seconds 217 245 200 150 60 - 120 seconds times
MYBSP01201ABF isolated dc - dc converter for poe pd http://www.murata.com/products/power note prior to use if you apply high static electricity, voltage higher than rated voltage or reverse voltage to the product, it may cause defects in the products or degrade the reliability. please avoid the following items: 1. over rating power supply, reverse power supply or not - enough connection of input voltage and 0v(dc)line 2. electrostatic discharge by production line and/or operator 3. electrified product by electrostatic induction do not subject product to excessive mechanical shock. if you drop the product on the floor it might cause a crack to the core of inductors and monolithic ceramic capacitors. also please pay attention to handling; the mounted parts can be dislodged if subjected to excessive force. transportation if you transport the product, please pack it so that the package will not be damaged by mechanical vibration or mechanical shock, and please educate and guide the carrier to prevent rough handling. note 1. please make sure that the product has been evaluated and confirmed against your specifications when it is mounted to your product. 2. all the items and parameters in this product specification have been prescribed on the premise that our product is used for the purpose, under the conditions and in the environment agreed upon between you and us. you are requested not to use our product deviating from such agreement. 3. we consider it not appropriate to include other terms and conditions for transaction warranty in product specifications, drawings or other technical documents. therefore, if your technical documents as above include such terms and conditions as warranty clause, product liability clause, or intellectual property infringement liability clause, we will not be able to accept such terms and conditions unless they are based on the governmental regulation or they are stated in a separate contract agreement. specifications are subject to change without notice. MYBSP01201ABF a01 page 12 of 12

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