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p-1 rev.: 0/2017 www.recom-power.com reference design description the half-bridge gate-drive power supply reference design (rd) consists of a half-bridge suitable for voltages up to 1kv and a fully-isolated driver stage with isolated power supplies for the low-side and the high-side switching transistors. it is suitable for single gate drive supply voltages as low as +4v as well as dual gate drive supply voltages as high as +20v / -5v (30v max) with no maximum duty cycle limitations. two r12p22005d, r12p21053d, r12p21509d and r12p06s dc/dc moduels each are included in the R-REF01-HB design kit. note: transistors sold separately. the signal ground is galvanically isolated from the power ground and can be connected to any potential, as long as it is less than 2.5kv with respect to the power potential (high-side and low-side). the limiting element is the gate driver ic specifcation. features: ? optimized for very high switching speed ? 2.5kv continuous input to output isolation ? high gate-drive currents (up to 10a source and sink) ? the rd is ftted with a si8273 gate driver, but can be used with any pin-compatible gate driver with a pwm input (si8274) or for gate driver ics with reinforced isolation, for example the ucc21520 (dual pinout layout on pcb). this rd can easily be confgured for the following topologies (see application suggestions section): ? llc half-bridge ? asymmetric duty cycle half-bridge (forward and fyback) ? active clamp half-bridge (forward and fyback) ? full-bridge / phase-shifted full-bridge ? 3-phase b6 bridge ? npc b6 bridge (additional driving circuit for npc is required) ? double pulse test ? synchronous boost converter ? synchronous buck converter features reference design ? half-bridge voltage up to 1kv ? ttl-compatible signal input ? single 15v to 42v supply ? shoot-through protection ? separate input for low and high-side switch for use with different topologies R-REF01-HB delivered board fully populated danger! this board is designed to be used with voltages up to 1kv, only qualifed personnel should work with this board. direct contact with hazardous voltage can cause injury or death! never leave the board operating unattended. after removing the high voltage from the board, discharge the capacitors with a suitable discharging resistor to avoid elec - trical shock! caution: this reference design is built with esd (electrostatic discharge) sensitive components. always follow esd prevention procedures when handling the product to avoid failures!
continued on next page specifcations (measured @ ta= 25c, 1.5vin, full load after warm up unless otherwise stated) R-REF01-HB p-2 rev.: 0/2017 www.recom-power.com reference design component placement 15v to 42v con1 c16 fb1 led3 c5 ic3 led2 r13 r18 r17 r20 r26 r7 fd2 t2 r2 ic5 led4 r23 c2 ic1 ic7 ic2 c2 r6 c4 c3 r4 r5 led1 r25 r12 r16 r19 con5 r15 r24 r1 c18 c19 c15 c6 c12 c11 ic6 r21 t1 r8 c13 c14 r3 c8 ic4 c9 c7 ic8 r22 r10 u1 fd1 con3 con2 c12 c17 r11 r9 u2 d2 d1 r14 con4 enable signal low side switch node high side switch low side switch signal high side 1000v max -vbridge +vbridge ttl- compatible input basic characteristics parameter condition min. typ. max. input voltage con1 15v 42v input voltage con2 - con3 limited by c10 0v 1000v digital 1, 2, enable -0.5v 5.5v logic high input threshold 2v logic low input threshold 0.8v input hysteresis 350mv 400mv maximum ratings -0.5v 5.5v driver section source and sink current (max) 10a total drive voltage positive and negative 4v 30v propagation delay system before gate resistors 20ns 40ns 70ns rise and fall times refer to the datasheet of the gate-driver ic isolation isolation voltage input to output 2.5kvdc
reference design p-3 rev.: 0/2017 www.recom-power.com specifcations (measured @ ta= 25c, 1.5vin, full load after warm up unless otherwise stated) R-REF01-HB following dc/dc models are suitable for use with this reference design component list part description ic2 dc/dc isolated converter for high-side gate-driver. depending on the transistor type, ft the appropriate dc/dc converter (please refer to pages p-10 to p-12). ic3 dc/dc isolated converter for low-side gate-driver. depending on the transistor type, ft the appropriate dc/dc converter (see table 1). t1 high-side switching transistor (not supplied). read important notice below. t2 low-side switch transistor (not supplied). read important notice below. note: the transistors are placed on the edge of the pcb so that they are easy to mount to a heatsink. they can also be mounted inverted on the bottom side of the pcb. both to247-3l and to247-4l format transistors can be used by using the appropriate hole set. con1 connector for logic and driver supply. connect a 15v, 18v, 24v or 36v dc supply here. con2 +v bridge voltage: connect a positive voltage up to 1kv in respect to power-gnd to this connector. con3 -v bridge voltage: power-gnd con4 enable: a high signal enables the driver signals. place the jumper on the connector to enable the signals permanently con5 switching node of the half-bridge u1 signal high-side: ttl-compatible input for the high-side transistor u2 signal low-side: ttl-compatible input for the low-side transistor table 1 model power [w] output voltage [v] application r12p22005d* 2 +20/-5 sic mosfets r12p21503d* 2 +15/-3 sic mosfets r12p21509d* 2 +15/-9 igbts r12p1509d 1 +15/-9 igbts r12p06s* 1 +6 gan r12p12s 1 +12 cascode/si mosfet *these models are included in the reference design. each of them two times truth table (with ic1 si8273 mounted): input output comment u1 u2 enable high-side gate low-side gate l l h l l l h h l h h l h h l h h h l l invalid state x x l l l device is disabled
specifcations (measured @ ta= 25c, 1.5vin, full load after warm up unless otherwise stated) R-REF01-HB p-4 rev.: 0/2017 www.recom-power.com reference design to247-4l package recommended gate-driver dc/dc r12p22005d or r12p21503d recommended gate-driver dc/dc r12p06s 3-pin igbt (n-type) sic mosfet (n-type) gan hemt (normally off) c g g d d s s e c g g e k 4-pin g d s k k g d s important: using three pin or four pin to247 packages: to247-4l packages can be used without any modifcation of the pcb. the kelvin source pin is already connected to the gate-driver ground. to247-3l packages however require a minor modifcation to join the gate-driver ground to the source pin ground. this can be done by soldering 0 ? resistors across r19 and r20 or by making a solder bridge between the source and kelvin source pads (recommended for lowest gate inductance). t2 t1 high-side switch low-side switch note: transistors sold separately recommended gate-driver dc/dc: r12p21509d to247-3l package
reference design p-5 rev.: 0/2017 www.recom-power.com specifcations (measured @ ta= 25c, 1.5vin, full load after warm up unless otherwise stated) R-REF01-HB schematic description: the reference design board requires a single supply voltage with a range of 15-42v. ic5 creates the regulated 12v supply for ic2 and ic3. ic2 generates the isolated high-side gate-driver supply voltage. choose the appropriate dc/dc converter from the selection provided. ic3 generates the isolated low-side gate-driver supply voltage. choose the appropriate dc/dc converter from the selection provided. ic8 creates a +vcc rail required for the gate driver. ic1 isolates the control signals and level shifts the ttl input to the gate-drive voltages. ic7 can be mounted instead of ic1 if reinforced isolation is required. ic4 and ic5 amplify the maximum gate-drive current to 10a. r24 and r25 are not ftted. zero resistors can be mounted if ic4 and ic5 are not required (for example gan transistors). the input gnd1 is galvanically isolated from the high-side gnda and the low-side gndb. for single-ended designs, it is recommended to connect gnd1 to power-gnd (con3) with a star-earth confguration. for full-bridge confgurations, couple gnd1 to power-gnd with y-capacitors to avoid generating high potentials caused by common mode currents. r15, r16, r17 and r18 are not ftted. the positions can be used to add dummy loads for the power supplies if needed, for example, under very light load conditions or low switching frequencies. alternately r16 and r18 can be used to allow single-output voltage dc/dc converters to be used by connecting -vout to the gate-driver ground. confguration r15, r17 r16, r18 dual output dc/dc, normal load (standard) not required not required dual output dc/dc, light load 12k 12k single output dc/dc, normal load not required zero single output dc/dc, light load 12k zero r1 and r4 control the turn-on slew rate. 22 is ftted as standard. r2 and r5 control the turn-off slew rate. 3.3 is ftted as standard. these 0207 package resistors are made to withstand highly pulsed loads. gate currents up to 10a are possible. g ndi g ndi g ndi g ndi g ndi g ndb +12v +5v g ndi g ndi v dda v ddb +5v +5v g ndi g ndb driver s o urce h s v dda v dda driver s o urce h s +5v g nda +12v v ddb g ndi g ndi g ndi +12v g ndi g ndi +5v g ndb g ndb v dda g nda g nda g nda v ddb v ddb g ndi +12v g ndi g ndi g nda 1 2 3 4 5 6 8 9 1 0 1 1 1 4 1 5 1 6 i n 1 i n 2 e n out2 out1 v cci g n d in a in b d isable v cci d t o u t b vssb v ddb vssa o u t a v dda ic7-a ucc21520 4 ic8-b 1 2 3 4 5 + v i n - v i n - v out g nd + v out ic3 r 12p x x 1 2 r 2 3r3 0207 1w 1 2 r23 10k 0603 100m w 1 2 r13 10k 0603 100mw 1 2 r11 10k 0603 100m w 1 2 c19 1uf 16v 0603 1 2 r19 0 r 0603 100m w 3 4 1 2 5 1 0 9 1 1 1 4 1 5 1 6 8 i n 1 e n v ddb g nda voa v dda e n able v ddi g ndi v ia v ib g ndb vob v dd2 ic1 s i 8273 1 2 c 8 1uf 50v 0603 1 2 c o n 3 62409-1 2 1 d 2 p m e g 6010 1 i n 2 u2- a b n c 1 2 r26 0 r 0603 100m w 1 2 r25 0r 0603 100m w 1 2 c18 1uf 25v 0603 2 1 d 1 p m e g 6010 1 2 out2 r 3 2k 0 0603 100m w 1 2 r 5 3r3 0207 1w 1 2 c14 100nf 50v 0603 1 2 c15 1uf 50v 0603 1 2 3 4 5 + v i n - v i n - v out g nd + v out ic2 r 12p x x 1 2 r 1 22r 0207 1w 1 2 r 8 10k 0603 100m w 1 2 3 4 5 d s k s g s g t 1 1 2 c13 1uf 50v 0603 1 2 r 9 10k 0603 100m w 1 2 r22 10k 0603 100m w 3 2 1 g n d + v i n + v out ic8-a l78l05 1 2 r24 0r 0603 100m w 1 2 r20 0 r 0603 100m w 1 2 3 g n d + v i n + v out ic5 r -78c12-1.0 1 2 c17 2 .2nf 50v 0603 1 2 l e d 4 1 u1- a b n c 1 2 c 1 22uf 25v 1210 1 2 r10 10k 0603 100m w 1 2 r 4 22r 0207 1w 1 2 r14 10k 0603 100m w 1 2 3 4 6 ic 4 z x g d 3006e 6ta 1 2 r21 0r 0603 100m w 1 2 l e d 2 1 2 c 9 1uf 50v 0603 1 2 r12 10k 0603 100mw 1 2 r16 12k 1206 250m w 1 2 r18 12k 1206 250m w 1 2 c 6 100nf 50v 0603 1 2 c 7 1uf 50v 0603 1 2 r 7 10k 0603 100m w 1 2 r 6 2k 0 0603 100m w 1 2 l e d 1 1 2 c 2 22uf 25v 1210 1 2 c o n 5 1 2 c 3 1uf 50v 0603 1 2 c10 1uf 1k v 1 2 c o n 2 62409-1 1 2 c 4 1uf 50v 0603 1 2 r15 12k 1206 250m w 1 2 r17 12k 1206 250m w 1 2 c12 100nf 50v 0603 1 2 c11 1uf 50v 0603 1 2 3 4 5 d s k s g s g t 2 1 2 3 4 6 ic 6 z x g d 3006e 6ta 1 2 c o n 4 61300211121 1 2 c16 10uf 50v 1210 2 1 c o n 1 39-29-0023 1 2 l e d 3 1 2 c 5 4 .7uf 50v 1206 1 2 f b 1 110r 4a 1806 vddb suppl y 5 v s uppl y 12v s uppl y vdda suppl y
specifcations (measured @ ta= 25c, 1.5vin, full load after warm up unless otherwise stated) R-REF01-HB p-6 rev.: 0/2017 www.recom-power.com reference design 15v to 42v con1 c16 fb1 led3 c5 ic3 led2 r13 r18 r17 r20 r26 r7 fd2 t2 r2 ic5 led4 r23 c2 ic1 ic7 ic2 c2 r6 c4 c3 r4 r5 led1 r25 r12 r16 r19 con5 r15 r24 r1 c18 c19 c15 c6 c12 c11 ic6 r21 t1 r8 c13 c14 r3 c8 ic4 c9 c7 ic8 r22 r10 u1 fd1 con3 con2 c12 c17 r11 r9 u2 d2 d1 r14 con4 enable signal low side switch node high side switch low side switch signal high side 1000v max -vbridge +vbridge ttl compatible input layout layer 1 with components layer 2
reference design p-7 rev.: 0/2017 www.recom-power.com specifcations (measured @ ta= 25c, 1.5vin, full load after warm up unless otherwise stated) R-REF01-HB layer 3 bottom view
specifcations (measured @ ta= 25c, 1.5vin, full load after warm up unless otherwise stated) R-REF01-HB p-8 rev.: 0/2017 www.recom-power.com reference design part name/number description manufacturer part number manufacturer qty. comps. 74279245 ferrite bead 110 1806 1ln 74279245 wurth 1 fb1 bnc_50ohm_6.26mm_thd conn bnc jack str 50 pcb 5-1634503-1 te connectivity 2 u1 u2 c1f-1kv-foil-32mmx13mm cap film 1f 10% 1kvdc radial r71qr41004010k kemet 1 c10 c1f-0603-16v cap cer 1f 16v x7r 0603 cc0603krx7r7bb105 yageo 1 c19 c1f-0603-25v cap cer 1f 25v x7r 0603 tmk107b7105ka-t taiyo yuden 1 c18 c1f-0603-50v 1f 10% 50v x7r mlcc capacitor 0603 umk107ab7105ka-t taiyo yuden 8 c3 c4 c7 c8 c9 c11 c13 c15 c2.2nf-0603-50v cap cer 2200pf 50v x7r 0603 cc0603krx7r9bb222 yageo 1 c17 c3m0120100k-hybrid 1000v 120m g3 sic mosfet c3m0120100k cree/ wolfspeed 2 t1 t2 c4.7f-1206-50v 4.7f 10% 50v x7r mlcc capacitor 1206 umk316ab7475kl-t taiyo yuden 1 c5 c10f-1210-50v cap cer 10f 50v x7r 1210 umk325ab7106kmht taiyo yuden 1 c16 c22f-1210-25v cap cer 22f 25v x7r 1210 tmk325b7226km-pr taiyo yuden 2 c1 c2 c100nf-0603-50v 0.10f 20% 50v x7r ceramic capacitor surface mount mlcc 0603 c0603c104m5ractu kemet 3 c6 c12 c14 connector_2x1_5.5mm molex mini-fit jr 39-29-0023 molex 1 con1 connector_6.35mmx0.83mm faston 250 pcb tab tpbr 6.35 x 0.83mm l=15.8mm 62409-1 te connectivity 3 con2 con3 con5 header_2x2.54mm_wurth conn header 2 pos 2.54 61300211121 wurth 1 con4 l78l05abutr ic reg linear 5v 100ma sot89-3 l78l05abutr stmicroelect - ronics 1 ic8 led-0603-green-3.2v led green clear 0603 smd 150060gs75000 wurth 4 led1 led2 led3 led4 pmeg6010-sod323 diode schottky 60v 1a sod323f pmeg6010 pmeg6010cej nxp 2 d1 d2 r0-0603 res smd 0.0 jumper 1/10w 0603 rc0603jr-070rl yageo 4 2 r19 r20 r24 r25 r21 r26 r2k0-0603 res smd 2k 1% 1/10w 0603 rc0603fr-072kl yageo 2 r3 r6 r3e3-0207-melf res smd 3.3 1% 1w 0207 mmb02070c3308fb200 vishay bey - schlag 2 r2 r5 r12p22005d conv dc/dc 2w 5vin +20/-5vout r12p22005d recom 2 ic2 ic3 r10k0-0603 res smd 10k 1% 1/10w 0603 rc0603fr-0710kl yageo 1 9 r22 r7 r8 r9 r10 r11 r12 r13 r14 r23 r22e0-0207-melf res smd 22 1% 1w 0207 mmb02070c2209fb200 vishay bey - schlag 2 r1 r4 r47k-1206 res smd 47k 1% 1/4w 1206 rc1206fr-0747kl yageo 4 r15 r16 r17 r18 r-78c12-1.0 conv dc/dc 1a 12v out sip vert r-78c12-1.0 recom 1 ic5 si8273gbd-is1 optoiso 2.5kv gate drvr 16soic si8273gbd-is1 silicon labs 1 ic1 ucc21520 optoiso 5.7kv gate drvr 16soic ucc21520adw texas instru - ments 1 ic7 zxgd3006e6ta ic gate drvr igbt/mosfet sot26 zxgd3006e6ta diodes incor - porated 2 ic4 ic6 bom
reference design p-9 rev.: 0/2017 www.recom-power.com specifcations (measured @ ta= 25c, 1.5vin, full load after warm up unless otherwise stated) R-REF01-HB typical switching waveforms switching voltage: 1000vdc transistor: c2m1000170d-nd ic2/ic3: r12p22005d ch.1: low-side gate source voltage ch.2: low-side drain source voltage switching frequency: 50khz measured switching slew rate: 65kv/s measured switching time: 15ns
specifcations (measured @ ta= 25c, 1.5vin, full load after warm up unless otherwise stated) R-REF01-HB p-10 rev.: 0/2017 www.recom-power.com reference design +v out R-REF01-HB synchronous boost +vout > +vin isolation +v in c l u1 u1 en reg con4 con1 con3 con5 con2 +v out R-REF01-HB synchronous buck +vout < +vin phase shifted/ full-bridge converter isolation +v in c l u1 u1 en reg con4 con1 con3 con5 con2 +v out, iso c out l out R-REF01-HB isolation +v in u1 u1 en reg con4 con1 con3 con5 con2 R-REF01-HB isolation u1 u1 en reg con4 con1 con3 con5 con2 application suggestion
reference design p-11 rev.: 0/2017 www.recom-power.com specifcations (measured @ ta= 25c, 1.5vin, full load after warm up unless otherwise stated) R-REF01-HB +v in +v in R-REF01-HB isolation u1 c c u1 en reg con4 con1 con3 con5 con2 R-REF01-HB isolation u1 u1 en reg con4 con1 con3 con5 con2 half-bridge forward converter half-bridge llc converter half-bridge flyback converter +v out, iso +v out, iso +v out, iso c out c out l out +v in l r c r c out R-REF01-HB isolation u1 u1 en reg con4 con1 con3 con5 con2
specifcations (measured @ ta= 25c, 1.5vin, full load after warm up unless otherwise stated) R-REF01-HB p-12 rev.: 0/2017 www.recom-power.com reference design the product inf orma tion and speci?ca tions ma y be subject to changes even without prior written notice.the product has been designed f or various a pplica tions; its suita bility lies in the responsibility of each customer . the products are not authorized f or use in safety-critical a pplica tions without recom? s explicit written consent. a safety-critical a pplica tion is an a pplica tion where a failure ma y reasona bl y be expected to endanger or cause loss of life, in?ict bodil y harm or dama ge property . the a pplicant shall indemnify and hold harmless recom, its af?lia ted companies and its representa tives a gainst an y dama ge claims in connection with the unauthorized use of recom products in such safety-critical a pplica tions. +v in R-REF01-HB isolation u1 u1 en reg con4 con1 con3 con5 con2 R-REF01-HB isolation u1 u1 en reg con4 con1 con3 con5 con2 R-REF01-HB isolation u1 u1 en reg con4 con1 con3 con5 con2 double pulse tester (dut can be a mosfet or diode) 3 phase motor driver +v in l R-REF01-HB isolation u1 nc u1 en reg con4 con1 con3 con5 con2 dut

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