AP43776Q

Document number: DS43207 Rev. 2 - 2

3 of 13

www.diodes.com

November 2022

© Diodes Incorporated

AP43776Q

Typical Applications Circuit (continued)

An example of the 120W Dual-port Type C PD3.1 PPS car charger is shown in Figure 3. Powered by the VREG pin (internal 5V regulator output)

for the attached DC-DC controller and detecting the Vin through GPIO1, the AP43776Q may enter standby mode to disable DC/DC stage by

controlling the GPIO2 pin. All PD decoded information and measured parameters of the operating conditions are processed through the CC1 and

CC2 pins. The AP43776Q conveys necessary actions, such as constant voltage output, constant current output, and protection functions through

the I2C interface. With built-in application firmware, VBUS MOS switches are not needed, and GPIO pins are used for battery detection, power

sharing, temperature detection, LED indicators, and so on.

Vreg

CC1A

GND

CC2A

RT

Vo

GND

TYPE-C

CC2

CC1

AP43776Q

CSG

LG2

BS2

SW2

UG2

ISENSP

ISENSN

VOUT

FB

VREG

ISNSO

INTB

F1

Vin

SW1

SW1

Vreg

D+

D-

VCC

VREG

VREG

VG

VREG

DC/DC

(I2C-Based)

CC1B

CC2B

Vreg

Vo

GND

TYPE-C

CC2

CC1

CSG

LG2

BS2

SW2

UG2

ISENSP

ISENSN

VOUT

FB

VREG

ISNSO

INTB

F1

Vin

SW1

SW1

Vreg

D+

D-

VREG

VREG

VG

VREG

GPIO2

GPIO7

To EN pin

To EN pin

GPIO8

GPIO2

GPIO5

GPIO6

GPIO1

GPIO1

GPIO1

DC/DC

(I2C-Based)

Figure 3. A 120W 2C PD3.1 PPS car charger design based on 2*DC/DC+1*AP43776Q