Typical Applications - Richtek RT9471DGQW Manual

Typical Applications

EVB Schematic Diagram
PD1
USB TY PE-C 3.1
A12 B1
GND
GND3
A11 B2
RX2+ TX2+
A10 B3
RX2- TX2-
VBUS A9 B4 VBUS
USB2
VBUS1 VBUS3
A8 B5 MICRO USB AB TY PE,SMT
SBU1 CC2 7 1
VBUS
7
1
A7 B6 2 D-
D- D+
D1- D2+ 2
3
D+
3
4
D+ A6 B7 D- ID
D1+ D2- 4
6 5
6 5
A5 B8
CC1 SBU2
A4 B9
VBUS VBUS
VBUS2 VBUS4
A3 B10
TX1- RX1-
A2 B11
TX1+ RX1+
A1 B12
GND2 GND4
D2
NC/PTVSHC3N12VU
GP4
1 VBUS
VBUS
differential
pair
JP5
2
VBUS_SENSE VBUS_SENSE
2
1
4 mil
1
GND_SENSE
GP2
PULL-UP
PULL-UP
R5 R2
R3
R1
1
TP5
STAT
1
TP8
D-/PG
1
TP9
D+/PSEL
1
TP10
SW
1
TP11
SCL
1
TP12
SDA
1
TP13
INT
1
TP15
CE
1
TP16
RENG
1
TP18
TS
1
TP19
QON
1
TP21
BTST
1. The capacitance values of the input and output capacitors will influence the input and output voltage ripple and
stability.
2. MLCC capacitors have degrading capacitance at DC bias voltage, and especially smaller size MLCC capacitors
will have much lower capacitance.
EVB_RT9471DGQW(2)-00
GP5
PMID
1
TP1
PMID
C8
C9
C10
TP20
1
ID
U1
TP2
VBUSI
24
VBUS
1
CP2 VAC
2
D+/PSEL
PSEL/D+
D-/PG 3
/PG/D-
CP-0805C_1
STAT 4
STAT
1 2 SCL 5
8 mil
SCL
AZ12
6
SDA
NC
SDA
C1
C2
1 2
8 mil
AZ7
NC
R23
JP8
2
CE
2
1
1
LED1 LED2
LED_RED-DIP
LED_RED-DIP
R22
R21
STAT
1
GP20 PGND
PG
D-/PG
1
GP21 PGND
D+/PSEL
SW
1
GP18 PGND
SCL
SDA
1
GP17 PGND
INT
CE
1
GP14 PGND
REGN
TS
1
GP15 PGND
QON
BTST
June 2023
C3
1 2
C4 CP3
L1
1 2 2 1
CP-0805C_1
SW
D1
NC/NSR05F40NXT5G
18
PGND
TP3
17
PGND
SY SI
16
SY S
PGND
15 SY SI
SY S
TP4
14 BATI
BAT
13
BATI
BAT
QON
R8
R7
PowerOn
2 1
2 1
4 3
4 3
R6
SW-TACT-SWITCH
JP35
1V8
JP4
HI
PSEL
SDA 1 2 1V8
1 2 LOW
3 4
GPIO
3 4
SCL 5 6 3V3
5 6 JP34
GPIO
HEADER-CHEB254S006
JP33
3V3
6
RT9471DGQW(2)
Evaluation Board
19 17 15 13 11 9 7 5 3 1
21
J102
CONN EDGE DUAL FMALE 20POS 0.8mm
22
20 18 16 14 12 10 8 6 4 2
GP6
SY S
CP5
CP-0805C_1
C6 C11 C12
C5
JP6
1
1
2 PULL-UP
2
3
3
GP7
PULL-UP
BAT
CP4
differential
CP-0805C_1
1 2
pair
8 mil
AZ9
VBAT_SENSE
NC
4 mil
C7
GND_SENSE
1 2
8 mil
AZ8
NC
REGN
R12
JP10 JP9
JP16
3 1
1 D+ D-
3 1
1 2 2
D+/PSEL D-/PG
2 PSEL
2 2
2 1 PSEL 3 PG
3
1 3
3
D+/PSEL D-/PG
PSEL H/L
http://www.richtek.com
differential
1 2
JP17
pair
8 mil
VSY S_SENSE
AZ10
1
NC VSYS_SENSE
1
2
4 mil
2
GND_SENSE
1 2 8 mil
AZ11
NC
JP14
1
VBAT_SENSE
1
2
2
JP13
REGN
REGN
R9
TS
JP12
1
TS
1
2
2
R10 R11