Schematic for the LV8121VGEVK Evaluation Board 24V Exposed Die - Pad NC R1 P1 C2 Tr.1 NCV4264 3pin NC R2 VCC R4 R3 C1 C3 R5 ZD1 GND R7 C4 P2 R6 R8 C6 FG P4 C9 C8 NC OUT1 OUT1 OUT2 NC OUT3 OUT3 OUT2 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 NC VCC1 VCC2 GND2 23 GND2 24 NC 25 NC 26 NC 27 NC 28 RF CP1 29 RF CP2 30 RFS VREG 31 F/R GND1 32 NC RT 33 VCC2 CT 34 NC HB 35 IN1+ 36 IN1- 37 IN2+ 38 IN2- 39 IN3+ 40 IN3- 41 S/S 42 CTL 43 R9 LIM 44 FG R10 CSD C7 C5 VG IC2 14pin (Fin) LV8121V PWM IC1 1 C10 R11 R12 A1-17 (FR1) For Hall elements C11 C12 C13 R22 R23 R24 HB - F/ R OUT3 P3 NC R14 R28 R13 OUT2 OUT1 NC NC NC IN2+ IN1- NC IN1+ CTL A1-8 (AD1) B-19 (FG) LV8121V 43pin (FG) 16 15 14 Fin HB+ HBIN1+ IN1IN2+ IN2IN3+ IN3- NCV4264 C24 2 C23 A1-11 (VREF1 /CTRL1) NCV4264 3pin R32 16 15 14 Dout Din VSS VSS 7 8 2 3 4 5 6 7 8 Eout Cin Cin 6 C20 2/10/2014 Ein Cout 5 9 Cout Bin 4 10 Bin Din Bout 3 MODE Dout Ain 2 11 Bout Ein Aout 1 B-3 (3.3V) 12 1 IC3 MC14504BDT 13 Ain 9 Aout 10 VCC NCV4264 3pin 11 VCC IC2 12 Eout C21 13 MODE C19 3 Fin B-3 (3.3V) Fout IC3 15pin (Fout) VDD A1-15 (VREF2 /CTRL2) 1 5V IC1 IC2 IC3 (5V) Fout S/S IC4 A2-15 (ST-Bar) VDD R32 C17 NC R31 C18 VCC (24V) R30 R29 A2-8 (AD2) OUT1 OUT2 OUT3 Note) Please drow the following line relatively thickly. VCC2, RF, GND2, OUT1, OUT2, OUT3 C16 R27 NC NC IN3+ IN2 - CONNECTOR 1 (MPT 0,5/3-2,54) IN3 LIM C15 R26 NC C14 NC R25 R20 For Hall ICs NC NC R21 NC HB+ R16 CONNECTOR 2 (MPT 0,5/8-2,54) Tr.2 R15 MC14504BDT C22 -1- www.onsemi.com