vishay siliconix SIDB766707 document number: 73282 17-mar-06 www.vishay.com 1 sic714cd10 mosfet plus driver evaluation board features ? mosfet plus driver powerpak ? mlf 10 x 10 product demonstration ? 10 v to 14 v input voltage ? switching frequency: 100 khz to > 1 mhz ? up to 27 a output current description the SIDB766707 evaluation board provides a refer- ence design for evaluating the performance of the sic714cd10. the module contains all of the circuitry necessary to control a synchronous buck converter in voltage mode configuration. this document explains how to construct basic power conversion circuits using the sic714cd10 and includes test results. the evaluation board includes a voltage mode control- ler (tl5001), power up/down sequence circuitry, and a linear regulator (7805) which generates a 5 v output from a 12 v input for control voltage supply. the board is fully assembled and tested and ready for immediate use. included in this document are the bill-of-material, schematics, pcb layout, and test results. operating specifications table 1 summarizes the performance specifications of the SIDB766707. the evaluation board layout is avail able in gerber file format. please contact your vishay sales represen tative or distributor for a copy. test set up figure 1 shows the input-output connections to the SIDB766707. note: before making any evb set up changes it is strongly advised to power down and disconnect power supplies. table 1 operating specifications (as shipped) specification min typ max units input voltage range (v in )10 12 14 v output voltage (v out ) SIDB766707-b SIDB766707-c SIDB766707-d 3.3 2.5 1.3 v v v output current (i out ) (12 v in /2.5 v out , f sw = 300 khz) 27 a efficiency (12 v in /2. 5 v out , i out = 7 a) 94.5 % operating frequency 300 khz ordering information evb order number v in v out SIDB766707-b 12 v 3.3 v SIDB766707-c 12 v 2.5v SIDB766707-d 12 v 1.3 v figure 1. test set up
www.vishay.com 2 document number: 73282 17-mar-06 vishay siliconix SIDB766707 switching frequency adjustment the switching frequency can be selected by changing the resistance of r15. table 2 shows typical switching frequency relative to the r15 value. the SIDB766707 evb comes preset with an r15 of 22.6 k for 300 khz operation. output voltage programming the output voltage can be programmed by selecting four components as shown in table 3. jumper pin description electrical performance the SIDB766707 evaluation board provides optimum efficiency. typical performance is shown in figure 2 to figure 4. note that the efficiency was obtained after u1, u2 and u3 (see schematic) were disabled. for the efficiency measurements, an external function genera- tor was used to generate pwm signals for open-loop operation. table 2 frequency vs. r15 frequency r15 300 khz 22.6 k 400 khz 15 k table 3 v out r17 r5 c6 c7 3.3 v 7.68 k 10 k 5.6 nf 220 pf 2.5 v 4.99 k 7.68 k 6.8 nf 220 pf 1.3 v 1 k 3.4 k 15 nf 1800 pf table 4 description default jp1 selection of ldo (7805) input voltage: (1) short; ldo input voltage = v in (2) open; the ldo input voltage must be supplied from dcin (j1) externally. short jp2 sync selection: (1) short to v dd = normal pwm (2) short to gnd = sync enabled, i.e. the low-side mosfet is disabled and is held in the of state short to v dd jp3 jp4 selection of a shunt resistor (r12) short figure 2. total efficiency 12 v in /1.3 v out 76 7 8 8 0 8 2 8 4 8 6 88 90 92 94 0 102030 o u tp u t c u rrent ? (a) ) % ( y c n e i c i f f e 700 khz 500 khz 300 khz figure 3. total loss 12 v in /2.5 v out 0 1 2 3 4 5 6 7 8 9 0 5 10 15 20 25 30 ) w ( s s o l l a t o t o u tp u t c u rrent ? (a) 700 khz 500 khz 300 khz
document number: 73282 17-mar-06 www.vishay.com 3 vishay siliconix SIDB766707 electrical performance figure 4. measured switch voltage v sw (v in = 12 v, v out = 2.5 v, i out = 20 a)
www.vishay.com 4 document number: 73282 17-mar-06 vishay siliconix SIDB766707 layout figure 5. top silk screen figure 7. internal power layer; 2nd layer figure 9. bottom silk screen figure 6. top layer figure 8. internal power layer; 3rd layer figure 10. bottom layer
SIDB766707 document number: 73282 17-mar-06 www.vishay.com 5 vishay siliconix table 5 bill-of-materials of sic714cd10 mosfet plus driver evb - SIDB766707 designator qty part number description size manufacturer m2 1 sic714cd10 mlf 10 x 10, vds 20 v mlf10 x 10 vishay r1 1 crcw0603000zrt1 res, 0 5 % 1/16 w 0603 603 vishay r2, r6, r7, r8, r9 5 crcw0603103jrt1 res, 10 k 5 % 1/16 w 0603 603 r3, r4 2 crcw0603202jrt1 res, 2 k 5 % 1/16 w 0603 603 r5 1 crcw0603103jrt1 SIDB766707-b - res, 10 k 5 % 1/16 w 0603 603 1 crcw06037681frt1 SIDB766707-c -res, 7.68 k 1 % 1/16 w 0603 603 1 crcw06033401frt1 SIDB766707-d - res, 3.4 k , 1 % 1/16 w 603 r10 1 crcw0603100jrt1 res, 10 5 % 1/16 w 0603 603 r11 1 crcw0603473jrt1 res, 47 k 5 % 1/16 w 0603 603 r13 1 crcw0603754jrt1 res, 750 k 5 % 1/16 w 0603 603 r14, r15 2 crcw06022632frt1 res, 22.6 k 1 % 1/16 w 0603 603 r16 1 crcw06033321frt1 res, 3.32 k 1 % 1/16 w 0603 603 r17 1 crcw06037681frt1 SIDB766707-b - res, 7.68 k 1 % 1/16 w 603 1 crcw06034991frt1 SIDB766707-c -res, 4.99 k 1 % 1/16 w 603 1 crcw06031001frt1 SIDB766707-d - res, 1 k 1 % 1/16 w 603 r18 1 crcw06037681frt1 SIDB766707-b - res, 7.68 k 1 % 1/16 w 0603 603 1 crcw06037681frt1 SIDB766707-c -res, 7.68 k 1 % 1/16 w 0603 603 1 crcw06031240frt1 SIDB766707-d - res, 124 , 1 % 1/16 w 603 c1, c3 2 18123d106kat2a ceramic cap, 10 f_1812_25 v, x5r 1812 vishay c2, c5, c8, c17, c19 5 vj0805y104kxac w1bc ceramic cap, 0.1 f 50 v x7r 0805 805 c4 1 vj0805g225kxqc w1bc ceramic cap, 2.2 f 10 v x5r 0805 805 c6 1 vj0603y562kxaac SIDB766707-b - cap, 5.6 nf 50 v x7r 0603 603 1 vj0603y682kxaac SIDB766707-c -cap, 6.8 nf 50 v x7r 0603 603 1 vj0603y153kxaac SIDB766707-d - cap, 0.015 f 50 v x7r 603 c7 1 vj0603y221kxaac SIDB766707-b - cap, 220 pf 50 v x7r 0603 603 1 vj0603y221kxaac SIDB766707-c -cap, 220 pf 50 v x7r 0603 603 1 vj0603y182kxaac SIDB766707-d - cap, 1800 pf 50 v x7r 603 c9 1 vj0603y472kxaac ceramic cap, 4700 pf 50 v x7r 0603 603 c10 1 vj0603y222kxaac ceramic cap, 2200 pf 50 v x7r 0603 603 c11, c12, c14 3 594d227x0010d cap 220 f d c13, c22, c23, c24 4 vj1206g106kxyc w1bc ceramic cap, 10 f 6.3 v x5r 1206 1206 c16 1 vj0603y222kxaac SIDB766707-b - cap, 2200 pf 50 v x7r 603 1 vj0603y222kxaac SIDB766707-c - cap, 2200 pf 50 v x7r 603 1 vj0603y393kxaac SIDB766707-d - cap, 0.039 f 50 v x7r 603 c25, c26 0 not populated cap 220 f c oscon q1 1 tp0610t p mosfet tp0610t sot-23 vishay q2 1 2n7002e n mosfet 2n7002e sot-23 q3 1 si1032x n mosfet si1032x sc89-3 u1 1 dg2012dl analog switch sc70-10 vishay u2 1 tl5001 pwm controller so-8 texas instruments u3 1 mc78l05 ac s linear regulator so-8 motorola l1 1 ihlp-5050fd-er3r3 or SIDB766707 ver 2 0 b inductor 3 3 h 13 x 13 mm vishay ssc-12808-3r1 12.8 x 14.2 mm 1 ihlp-5050fd-er2r2 or SIDB766707 ver 2 0 c inductor 2 2 h 13 x 13 mm vishay ssc-12808-2r2 12.8 x 14.2 mm 1 ihlp-5050fd-er1r5 or SIDB766707 ver 2 0 d inductor 1 5 h 13 x 13 mm vishay ssc-12808-1r5 12.8 x 14.2 mm
www.vishay.com 6 document number: 73282 17-mar-06 vishay siliconix SIDB766707 figure 11. evaluation board schematic - part 1 of 2 v n i 6 1 r k 2 3 . 31 % _ 60 v dd 1 2 c1 10 f _1 8 12_25 v c3 10 f _1 8 12_25 v 7 2 3 8 shd n sy n c n c 6 5 4 v i n n c v dd v i n n c v dd n c p w m cg n d n c pg n d sy n c shd n b n c n c n c n c n c 6 8 67 66 65 64 63 62 61 59 5 8 57 56 55 54 53 52 1 5 0 5 9 4 8 4 7 4 6 4 5 4 4 4 3 4 2 4 1 4 0 4 9 3 8 3 7 3 6 3 5 3 d n g p 34 33 32 31 30 29 2 8 27 26 25 24 23 22 21 20 19 1 8 v i n v i n v i n v i n v i n n c s w s w s w s w s w s w s w s w s w n c d n g p d n g p d n g p d n g p d n g p d n g p d n g p d n g p d n g p d n g p d n g p d n g p d n g p d n g p d n g p c boot dci n dci n j1 v i n j3 v i n g n d g n d n c g n d g n d v out mc7 8 l05 ac s clk 1 u3 lx c19 0.1 f c4 2.2 f jp2 sy n c 2 1 3 2 2 m2 c2 0.1 f c17 0.1 f c1 8 at c20 at sic714cd10 d1 at r1 0 l1 2.2 f 1 g n d (12 v ) + jp3 shut r12 at v 1 jp4 shut c16 2.2 nf r1 8 2 7.6 8 k _ 1 % 2 1 v out j9 v out c15 at d2 at r17 4.99 k _ 1 % j7 g n d c11 220 f c12 220 f c13 10 f c14 220 f c22 10 f c23 10 f c24 10 f c25 at c26 at + ++ + + 1 j 8 g n d j10 v out 2 @ reser v ed location jp1 v i n fb 1 1 2 1 1 1 2 3 4 5 6 7 8 9 0 1 1 1 2 1 3 1 4 1 5 1 6 1 7 1 2 2 2 2 2 2 1 1 1 1 1 2 1 1 1 1 2 2 1 2 2 2 2 2 2 2 2 2 2 1 1 1 1 1 1 1 1 1 1 2 2 2 d n g p v n i v n i v n i v n i v n i v n i v n i v n i c n d n g c c t o o b c n c t o o b v d d c n c n dci n fb (see page 7) (see page 7) j2
SIDB766707 document number: 73282 17-mar-06 www.vishay.com 7 vishay siliconix figure 11. evaluation board schematic - part 2 of 2 v dd jp5 out 2 out r 8 10 k 1 2 fb 12 1 c6 6. 8 nf r5 7.6 8 k v cc fb1 d n g t u o t r c t d p c s v c c p m o c b f c7 220 pf 1 comp 2 5 6 2 3 1 v + g n d i n 4 u1 r3 2 k v dd clk r2 10 k c5 0.1 f 1 clk j5 j4 + 5 v dg2012dl r4 2 k v dd 2 r10 10 2 1 1 3 r11 47 k r9 10 k r7 10 k q1 tp0610t q2 2n7002 c 8 0.15 f 5 1 r k 6 . 2 2 % 1 _ 4 1 r k 6 . 2 21 % _ rt dtc c9 4.7 nf c10 2.2 nf 2 2 u 1 0 0 5 l t j6 shd n shd n r6 10 k 13 1 v cc q3 si1032x ? + 5 6 7 c21 at r19 at v dd 1 r20 at r13 750 k 2 2 n c n o com v dd u4b at at reser v ed location 1 2 1 2 1 2 1 2 3 4 1 1 2 2 1 3 2 2 1 8 7 1 6 1 5 2 2 2 2 2 1 1 1 3 4 1 2 1 2 1 2 8 2 1 dci n fb 2 (see page 6) (see page 6)
www.vishay.com 8 document number: 73282 17-mar-06 vishay siliconix SIDB766707 evaluation board disclaimer vishay siliconix (vishay) provid es this evaluation board (evb) under the following conditions: the evb is intended for demonstration or en gineering development or evaluation purposes only and is not considered to be fit for commercial use. vishay assumes no liability for application assistance, cus- tomer product design, infringement of patents, or software performance. please read the evb datasheet carefully; it contains important info rmation for its use. the user assumes all respon- sibility and liability for safe and proper handling of the evb and to take any and all appro priate precau tions concern- ing electrostatic discharge. further, the user indemnifies vishay from all claims arising from handling or use. the evb is not regulatory?compliant or agency?certified. any user handling the product must have electronics training and observe good laboratory practice standards. the evb is provided as is, where is, with no warranties whatsoever, either expressed, implied, or statutory, and specifically excluding the warranties of merchantability and fitness for any particular purpose. except to the extent of the indemnity se t forth above, neither party shall be liable to the other for any indirect, special, i ncidental, or consequential damages. the evb is not provided exclusively to the user and vishay may supply the evb to other users. no license is granted under any patent right or any other intellectual property right of vishay.
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