RT1650
Typical Application Circuit
Q1 PMDPB80XP
USB or
AC Adapter Input
RT1650
ADEN
ADD
OUT
C
OUT
D1
C5
1μF/10V x 1
0.1μF/10V x 1
C
CLAMP1
1μF/10V x 1
0.1μF/10V x 1
0.47μF/50V
CLMP1
COM1
R4
1.5k
C
C
COMM1
22nF/50V
CHG
BOOT1
10nF/50V
RECT
BOOT1
AC1
C
S
System
Load
C
RECT
47nF/50V x 4
10μF/16V x 2
C
D
WPC Standard
12μH Coil
1.8μF/50V
SCL
SDA
AC2
C
BOOT2
10nF/50V
GPIO
BOOT2
C
COMM2
MODE0
MODE1
22nF/50V
COM2
C
CLAMP2
0.47μF/50V
CLMP2
VDD1
TS
C
VDD1
R1
33k
1μF/10V
VDD2
NTC
GND PGND
NCP15WF104F03RC
100k ohm
C
VDD2
1μF/10V
Note : The component value and the maximum voltage rating is based on the WPC standard transmitter and 5V
adapter application. The customer should modify it depend on the different design and application.
Functional Pin Description
Pin No.
Pin Name
I/O
Pin Function
Bootstrap Supply for Driving the High-side FETs of Synchronous Rectifier.
Connect a 10nF ceramic capacitor from BOOT1 to AC1 and from BOOT2
to AC2.
A1
BOOT2
O
A6
BOOT1
O
A2 to A5
G6, H6
PGND
Power Ground.
B1 to B3
B4 to B6
AC2
AC1
I
I
AC Power Input from Receiver Coil.
Output of Synchronous Rectifier. Connect a ceramic capacitor (10F to
22F) between this pin to PGND.
C1 to C5
RECT
O
C6
COM1
COM2
OUT
O
O
O
Open-Drain Output for Communication with Transmitter. Connect through
a capacitor to AC1/AC2 for capacitive load modulation.
E6
D1 to D5
Power Output of Regulator.
Copyright © 2015 Richtek Technology Corporation. All rights reserved.
is a registered trademark of Richtek Technology Corporation.
DS1650-00 July 2015
www.richtek.com
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