1 2 3 4

A A

U1 L1 33KΩ (3302) ±1%

1 2
Vin_12V_48V Vin SW 9V 5V
100UH
4 3 R1
EN FB FB C1

1
U2

GND
GND
GND
GND
GND
33nF/16V REF3033
D1 2
Vref
SS210
FB 10uF/6.3V

3
5

8
EP
6
7
R2 XL7005 C2
C3 C4 C5 R3
5.1KΩ (5101) ±1% 5.1KΩ (5101) ±1%

22uF (226) 20% 25V GND

GND
22uF (226) 20% 25V
GND 22uF (226) 20% 25V

B B

9VA U3
R4
2 3
9V Vin Vout 5V
GND
22Ω (22R0) ±1%
C6
1

D2
SMF11.0A C7 MST5350 22uF (226) 20% 25V

22uF (226) 20% 25V

GND
3V3
C C

C8 C9 C10 C11 C12 C13 C14 C15

U4
2 3
5V Vin Vout 3V3
GND
100nF (104) 10% 50V
GND 10uF/6.3V
1

100nF (104) 10% 50V

C16 100nF (104) 10% 50V 10uF/6.3V
MST5350
C17 100nF (104) 10% 50V 10uF/6.3V
22uF (226) 20% 25V C18
C19 100nF (104) 10% 50V
10uF/6.3V
GND 10uF/6.3V
10uF/6.3V

D Title D

Size Number Revision

A4
Date: 9/11/2022 Sheet of
File: C:\Users\..\AUX_POWER.SchDoc Drawn By:
1 2 3 4
PIC102O3456789DLRUE
 1 2 3 4

A A
GND

3V3
3V3
R5
5.1KΩ (5101) ±1%
D3
GND SWCLK 红灯 0805
D4

49
48
47
46
45
44
43
42
41
40
39
38
37
翠绿 0805
D5

PB5

PB3
GND
VDD
PB9

PB7
PB6

PB4

PC11
PB8-BOOT0

PC10
PA15
PA14/CLK
蓝灯 0805
10pF (100) 5% 50V
C20
C21
10pF (100) 5% 50V

4
2
1 36
3V3 VBAT PA13/DIO SWDIO
1 3 2 35
B 12MHZ 20PF 10PPM PC13 VDD 3V3 B
3 34
OSC1 PC14 PA12 USB_DP R6 R7 R8
4 33
PC15 PA11 USB_DM
5 32
OSCIN PA10
6 31
R9 OSCOUT PA9 HRTIM_CHA2
7 30
3V3 NRST U5 PA8 HRTIM_CHA1 Red Green Blue
8 29
I_PEAK_DETC PA0 PC6
9 STM32G474CCU6 28
100KΩ (1003) ±1% I_OUT_DETC PA1 PB15 SPI2_MOSI
10 27
USART2_TX PA2 PB14 SPI2_MISO
11 26 2.7KΩ (2701) ±1%
USART2_RX PA3 PB13 SPI2_CLK
C22 12 25
DAC1_CH1 PA4 PB12 SPI2_NSS 2.7KΩ (2701) ±1%
100nF (104) 10% 50V 2.7KΩ (2701) ±1%

VREF+
VDDA
PB10
VDD
PB11
PC4
PB0
PB1
PB2
PA5
PA6
PA7

21
13

15

18

23
14

16
17

19
20

22

24
C C
VOUT_DETC
3V3
VIN_DETC
Vref
Red P2
P1
3V3 1 2 3V3
Green
SPI2_NSS 1 2 USB_DM USART2_TX 3 4 SWCLK
Blue SPI2_CLK 3 4 USB_DP USART2_RX 5 6 SWDIO
SPI2_MISO 5 6 3V3 GND 7 8 GND
SPI2_MOSI 7 8 GND
Header 4X2
Header 4X2

D Title D

Size Number Revision

A4
Date: 9/11/2022 Sheet of
File: C:\Users\..\MCU.SchDoc Drawn By:
1 2 3 4
PIC201OD3AK45S678R9U
 1 2 3 4

A A

GND

1nF 10% 50V R22

C49 20KΩ (2002) ±1%
3V3

11
R23

4
U7A U7B
I_PEAK 6 RS8559
3 RS8559 R24
2.7KΩ (2701) ±1% R25 R26 7
1 33KΩ (3302) ±1% VIN_DETC
I_PEAK_DETC 5
R27 2 Vin_12V_48V
GND 22Ω (22R0) ±1% 22Ω (22R0) ±1%

4
11

R28 C50
B 3V3 B
2.7KΩ (2701) ±1% 2KΩ (2001) ±1% 1nF 10% 50V
R29 20KΩ (2002) ±1%

C51
GND
1nF 10% 50V

GND

GND

1nF 10% 50V

C52 R30
33KΩ (3302) ±1% 3V3
R31 2KΩ (2001) ±1%
4

U7D 1nF 10% 50V

GND_OUT R32
2KΩ (2001) ±1% 12 RS8559 C53 3V3
R33
14

4
C I_OUT_DETC U7C C
R34 13 VOUT
10 RS8559
I_PEAK 22Ω (22R0) ±1% R36 R35
8
2KΩ (2001) ±1% 33KΩ (3302) ±1% VOUT_DETC
11

9
I_PEAK 22Ω (22R0) ±1%
33KΩ (3302) ±1%

11
R38
R37 33KΩ (3302) ±1%
C54

R392KΩ (2001) ±1%

1nF 10% 50V

C55
1nF 10% 50V

D D

1 2 3 4
PIC49012O53R678UABD
 1 2 3 4

10uF/50V 10uF/50V
10uF/50V 10uF/50V 10uF/50V
10uF/50V 10uF/50V
10uF/50V 10uF/50V
10uF/50V 10uF/50V
10uF/50V Q1 10uF/50V 10uF/50V
10uF/50V 10uF/50V L2 10uF/50V 10uF/50V
10uF/50V BSC0702LS HS VOUT_test
A A
10uF/50V 10uF/50V
Vin_12V_48V VOUT
22uH/5A R11

33KΩ
Q2 0Ω (0R0) ±1%
BSC0702LS
R10
C23 C24 C25 C26 C27 C28 C29 C30 H_MOS
L_MOS
C35 C36 C37 C38 C39 C40 C41 C42 C43 C44 C45 C46
R12 R13
33KΩ (3302) ±1% 0.03Ω (R030) ±1% R14
GND GND_OUT
I_PEAK
GND I_PEAK 0.03Ω (R030) ±1%

B B
VOUT_test
C47
22uF (226) 20% 25V D6
9VA
GND 1N4148WS T4
R40 R41
C48 20KΩ (2002) ±1% 20KΩ (2002) ±1%
1

U6 D7 1N4148WS T4
R16 GND
8
VDD

5.1KΩ (5101) ±1% R17 HB

2 6
HRTIM_CHA1 HI HS HS
R18 22Ω (22R0) ±1%
22Ω (22R0) ±1% 7
HO 100nF (104) 10% 50V H_MOS
3
HRTIM_CHA2 LI 5
GND

LO L_MOS DUANZI Vin_12V_48V GND

R19 R20 22Ω (22R0) ±1%
22Ω (22R0) ±1%
C R21 LM5109 C
DUANZI GND
4

5.1KΩ (5101) ±1%

D8 1N4148WS T4
GND DUANZI GND_OUT
GND
DUANZI VOUT

D Title D

Size Number Revision

A4
Date: 9/11/2022 Sheet of
File: C:\Users\..\SR_BUCK.SchDoc Drawn By:
1 2 3 4
PIC2301O456789DUANZLQGSR