Datasheet

4

002-37178 Rev. *B

2023-10-10

EZ-PD™ PAG2S-PS integrated USB PD and

synchronous-rectification controller

Application overview

1

Application overview

Figure 1 shows a power adapter application diagram implementing a primary side-controlled synchronous

flyback system. In this system, EZ-PD™ PAG2S-PS engages the internal error amplifier (EA) to take the feedback

from the secondary side and pass it on to the primary controller over an isolation barrier like an optoisolator. The

primary side controller can be any standard flyback controller. In this topology, EZ-PD™ PAG2S-PS integrates

three key features: secondary side rectification, charging protocol control, and fault protection.

Figure 1

USB PD adapter with primary side flyback control

Primary Flyback

Controller

EMI

Filter

GND

HV

CS

CC1

CC2

DP_GPIO3

DM_GPIO2

EZ-PD™ PAG2S

CYPAS213

Temperature

Sensor

GPIOs

Vcc

CC_COMP

EA_OUT

FB

FB