SIDB766707-C

SiDB766707 Vishay Siliconix 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 ORDERING INFORMATION EVB Order Number SiDB766707-B SiDB766707-C SiDB766707-D VIN 12 V 12 V 12 V VOUT 3.3 V 2.5V 1.3 V DESCRIPTION The SiDB766707 evaluation board provides a reference 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 controller (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. TABLE 1 Operating Specifications (as shipped) Specification Input Voltage Range (VIN) Output Voltage (VOUT) SiDB766707-B SiDB766707-C SiDB766707-D Output Current (IOUT) (12 VIN/2.5 VOUT, FSW = 300 kHz) Efficiency (12 VIN/2. 5 VOUT, IOUT = 7 A) Operating Frequency Min 10 Typ 12 3.3 2.5 1.3 27 94.5 300 Max 14 Units V V V V A % kHZ The evaluation board layout is available in Gerber file format. Please contact your Vishay sales representative 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. Figure 1. Test Set Up Document Number: 73282 17-Mar-06 www.vishay.com 1 SiDB766707 Vishay Siliconix 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 kΩ for 300 kHz operation. TABLE 2 Frequency vs. R15 Frequency 300 kHz 400 kHz R15 22.6 kΩ 15 kΩ JP2 JUMPER PIN DESCRIPTION TABLE 4 Description Selection of LDO (7805) input voltage: JP1 (1) short; LDO input voltage = VIN (2) open; The LDO input voltage must be supplied from DCIN (J1) externally. SYNC Selection: (1) short to VDD = normal PWM (2) short to GND = SYNC enabled, i.e. the low-side MOSFET is disabled and is held in the of state Selection of a shunt resistor (R12) Short to VDD Short Default OUTPUT VOLTAGE PROGRAMMING The output voltage can be programmed by selecting four components as shown in Table 3. TABLE 3 VOUT 3.3 V 2.5 V 1.3 V R17 7.68 kΩ 4.99 kΩ 1 kΩ R5 10 kΩ 7.68 kΩ 3.4 kΩ C6 5.6 nF 6.8 nF 15 nF C7 220 pF 220 pF 1800 pF JP3 JP4 Short 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 94 92 300 kHz 90 efficiency measurements, an external function generator was used to generate PWM signals for open-loop operation. 9 8 7 Total Loss (W) 6 5 500 kHz 4 3 2 500 kHz 1 0 0 10 20 30 0 5 10 15 20 25 30 Output Current – (A) Output Current – (A) 300 kHz 700 kHz Efficiency (%) 88 86 84 82 80 78 76 700 kHz Figure 2. Total Efficiency 12 VIN/1.3 VOUT Figure 3. Total Loss 12 VIN/2.5 VOUT www.vishay.com 2 Document Number: 73282 17-Mar-06 SiDB766707 Vishay Siliconix ELECTRICAL PERFORMANCE Figure 4. Measured Switch Voltage VSW (VIN = 12 V, VOUT = 2.5 V, IOUT = 20 A) Document Number: 73282 17-Mar-06 www.vishay.com 3 SiDB766707 Vishay Siliconix LAYOUT Figure 5. Top Silk Screen Figure 6. Top Layer Figure 7. Internal Power Layer; 2nd Layer Figure 8. Internal Power Layer; 3rd Layer Figure 9. Bottom Silk Screen Figure 10. Bottom Layer www.vishay.com 4 Document Number: 73282 17-Mar-06 SiDB766707 Vishay Siliconix TABLE 5 Bill-of-Materials of Sic714CD10 MOSFET plus driver EVB - SiDB766707 Designator M2 R1 R2, R6, R7, R8, R9 R3, R4 R5 R10 R11 R13 R14, R15 R16 R17 Qty 1 1 5 2 1 1 1 1 1 1 2 1 1 1 1 1 1 1 2 5 1 1 1 1 1 1 1 1 1 3 4 1 1 1 0 1 1 1 1 1 1 1 L1 1 1 Part Number SiC714CD10 CRCW0603000ZRT1 CRCW0603103JRT1 CRCW0603202JRT1 CRCW0603103JRT1 CRCW06037681FRT1 CRCW06033401FRT1 CRCW0603100JRT1 CRCW0603473JRT1 CRCW0603754JRT1 CRCW06022632FRT1 CRCW06033321FRT1 CRCW06037681FRT1 CRCW06034991FRT1 CRCW06031001FRT1 CRCW06037681FRT1 CRCW06037681FRT1 CRCW06031240FRT1 18123D106KAT2A VJ0805Y104KXAC W1BC VJ0805G225KXQC W1BC VJ0603Y562KXAAC VJ0603Y682KXAAC VJ0603Y153KXAAC VJ0603Y221KXAAC VJ0603Y221KXAAC VJ0603Y182KXAAC VJ0603Y472KXAAC VJ0603Y222KXAAC 594D227X0010D VJ1206G106KXYC W1BC VJ0603Y222KXAAC VJ0603Y222KXAAC VJ0603Y393KXAAC NOT POPULATED TP0610T 2N7002E Si1032X DG2012DL TL5001 MC78L05 AC S IHLP-5050FD-ER3R3 or SSC-12808-3R1 IHLP-5050FD-ER2R2 or SSC-12808-2R2 IHLP-5050FD-ER1R5 or SSC-12808-1R5 Description MLF 10 x 10, VDS 20 V RES, 0 Ω 5 % 1/16 W 0603 RES, 10 kΩ 5 % 1/16 W 0603 RES, 2 kΩ 5 % 1/16 W 0603 SiDB766707-B - RES, 10 kΩ 5 % 1/16 W 0603 SiDB766707-C -RES, 7.68 kΩ 1 % 1/16 W 0603 SiDB766707-D - RES, 3.4 kΩ, 1 % 1/16 W RES, 10 Ω 5 % 1/16 W 0603 RES, 47 kΩ 5 % 1/16 W 0603 RES, 750 kΩ 5 % 1/16 W 0603 RES, 22.6 kΩ 1 % 1/16 W 0603 RES, 3.32 kΩ 1 % 1/16 W 0603 SiDB766707-B - RES, 7.68 kΩ 1 % 1/16 W SiDB766707-C -RES, 4.99 kΩ 1 % 1/16 W SiDB766707-D - RES, 1 kΩ 1 % 1/16 W SiDB766707-B - RES, 7.68 kΩ 1 % 1/16 W 0603 SiDB766707-C -RES, 7.68 kΩ 1 % 1/16 W 0603 SiDB766707-D - RES, 124 Ω , 1 % 1/16 W Ceramic CAP, 10 µF_1812_25 V, X5R Ceramic CAP, 0.1 µF 50 V X7R 0805 Ceramic CAP, 2.2 µF 10 V X5R 0805 SiDB766707-B - CAP, 5.6 nF 50 V X7R 0603 SiDB766707-C -CAP, 6.8 nF 50 V X7R 0603 SiDB766707-D - CAP, 0.015 µF 50 V X7R SiDB766707-B - CAP, 220 pF 50 V X7R 0603 SiDB766707-C -CAP, 220 pF 50 V X7R 0603 SiDB766707-D - CAP, 1800 pF 50 V X7R Ceramic CAP, 4700 pF 50 V X7R 0603 Ceramic CAP, 2200 pF 50 V X7R 0603 CAP 220 µF Ceramic CAP, 10 µF 6.3 V X5R 1206 SiDB766707-B - CAP, 2200 pF 50 V X7R SiDB766707-C - CAP, 2200 pF 50 V X7R SiDB766707-D - CAP, 0.039 µF 50 V X7R CAP 220 µF P MOSFET TP0610T N MOSFET 2N7002E N MOSFET Si1032X Analog Switch PWM Controller Linear Regulator SiDB766707 Ver 2 0 B Inductor 3 3 µH SiDB766707 Ver 2 0 C Inductor 2 2 µH SiDB766707 Ver 2 0 D Inductor 1 5 µH Size MLF10 x 10 603 603 603 603 603 603 603 603 603 603 603 603 603 603 603 603 603 1812 805 805 603 603 603 603 603 603 603 603 D 1206 603 603 603 C SOT-23 SOT-23 SC89-3 SC70-10 SO-8 SO-8 13 x 13 mm 12.8 x 14.2 mm 13 x 13 mm 12.8 x 14.2 mm 13 x 13 mm 12.8 x 14.2 mm Manufacturer Vishay Vishay R18 C1, C3 C2, C5, C8, C17, C19 C4 C6 C7 C9 C10 C11, C12, C14 C13, C22, C23, C24 C16 C25, C26 Q1 Q2 Q3 U1 U2 U3 Vishay OSCON Vishay Vishay Texas Instruments Motorola Vishay Vishay Vishay Document Number: 73282 17-Mar-06 www.vishay.com 5 DCIN CBOOT DCIN JP1 VIN 1 1 1 1 1 1 9 10 11 12 13 14 15 16 17 J1 www.vishay.com 6 J3 VIN (12 V) M2 + C2 0.1 µF 2 2 2 2 2 2 1 2 3 4 5 6 7 8 NC V IN V IN V IN V IN V IN V IN V IN NC V IN V IN VDD NC CGND CBOOT NC CBOOT 18 NC VDD NC VDD V IN V IN 64 NC 65 66 67 V IN V IN 19 20 V IN 68 SiDB766707 Vishay Siliconix C3 C17 C1 C18 10 µF 0.1 µF 10 µF at _1812_25 V _1812_25 V C20 at J2 GND VDD 21 22 1 8 7 6 5 CLK 23 PWM CGND NC PGND SW SW SW SW SW SW SW SW SW 52 53 54 55 56 1 2 57 58 59 SYNC SHDNB NC V IN 62 61 60 V IN 24 63 U3 VIN VOUT 1 GND GND 2 GND GND 3 NC 4 NC 1 1 25 JP2 SYNC LX 26 2 SYNC 27 1 MC78L05 AC S SiC714CD10 R1 0Ω C19 0.1 µF SHDN 28 2 3 29 C4 2.2 µF 2 2 NC NC 30 31 L1 2.2 F 1 NC NC NC NC 32 33 34 D1 at 2 PGND PGND PGND PGND PGND PGND 50 40 36 51 37 49 38 39 41 42 43 44 45 47 46 48 PGND PGND PGND PGND PGND PGND PGND PGND PGND PGND PGND 35 DCIN (See Page 7) V1 1 1 1 JP4 SHUT 2 JP3 SHUT 2 R12 at VOUT R18 2 FIGURE 11. EVALUATION BOARD SCHEMATIC - PART 1 OF 2 J9 VOUT 1 1 1 1 2 C16 1 2 7.68 kΩ_1 % 2.2 nF 1 1 1 1 1 1 1 J10 VOUT + D2 at 2 R17 1 + + + + 2 4.99 kΩ_1 % FB 1 C11 C12 C14 C22 C23 220 µF 220 µF 220 µF 10 µF 10 µF 2 2 2 2 2 C24 10µF 2 C25 at 2 C26 at 2 C13 10 µF 2 R16 3.32 kΩ_1 % C15 at 2 J7 GND J8 GND FB (See Page 7) Document Number: 73282 17-Mar-06 @ Reserved location 2 DCIN (See Page 6) R7 10 k C9 R13 4.7 nF 750 kΩ 2 2 2 C10 2.2 nF 2 R14 22.6 kΩ_1 % R15 22.6 kΩ_1 % C21 at 2 – + Document Number: 73282 17-Mar-06 VDD 1 2 C5 0.1 µF 1 1 CLK J5 CLK 5 6 R2 10 kΩ R4 2 kΩ 2 2 OUT 1 2 R5 7.68 kΩ 2 C6 6.8 nF VCC COMP 1 12 FB (See Page 6) R8 10 kΩ 1 C7 220 pF FB1 1 2 3 4 2 FB FB VCC COMP OUT 1 U2 TL5001 J6 SHDN 1 SHDN 2 R6 10 kΩ 1 VDD 3 JP5 1 VCC GND 2 DTC RT RT 8 5 17 16 2 1 1 1 DTC SCP U4B at 82 5 Q3 Si1032X OUT 7 6 2 R20 at 4 2 1 3 R19 at 1 1 VDD 2 J4 +5V U1 3 GND NC 4 COM VDD 2 V+ 1 IN NO FIGURE 11. EVALUATION BOARD SCHEMATIC - PART 2 OF 2 VDD 1 DG2012DL R3 2 kΩ 2 at Reserved location Q1 TP0610T 3 1 1 2 1 R10 10 Ω R11 47 kΩ 2 2 1 R9 10 kΩ C8 0.15 µF 1 2 1 2 Q2 2N7002 3 Vishay Siliconix 2 SiDB766707 www.vishay.com 7 SiDB766707 Vishay Siliconix EVALUATION BOARD DISCLAIMER Vishay Siliconix (Vishay) provides this evaluation board (EVB) under the following conditions: The EVB is intended for DEMONSTRATION OR ENGINEERING DEVELOPMENT OR EVALUATION PURPOSES ONLY and is not considered to be fit for commercial use. Vishay assumes no liability for application assistance, customer product design, infringement of patents, or software performance. Please read the EVB datasheet carefully; it contains important information for its use. The user assumes all responsibility and liability for safe and proper handling of the EVB and to take any and all appropriate precautions concerning 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 SET FORTH ABOVE, NEITHER PARTY SHALL BE LIABLE TO THE OTHER FOR ANY INDIRECT, SPECIAL, INCIDENTAL, 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. www.vishay.com 8 Document Number: 73282 17-Mar-06