Datasheet

Please read the Important Notice and Warnings at the end of this document

002-34772 Rev. *F

www.infineon.com

page 1

2023-06-13

CYPAP211/ CYPAP212

EZ-PD™ PAG2P primary-side startup

controller

General description

EZ-PD™ PAG2P (Power Adapter Generation 2 Primary) is Infineon’s second generation integrated primary-side

startup controller for AC/DC applications targeting the mobile power adapter segment. EZ-PD™ PAG2P

interface’s with the AC mains rectified output on the primary side and receives the necessary PWM signal from

the secondary side to provide a regulated output voltage. EZ-PD™ PAG2P is designed to operate in two configu-

rations: half-bridge running in non-complementary state (Active Clamp Flyback) or a low-side switch configu-

ration with a snubber circuit (QR, DCM, CCM). EZ-PD™ PAG2P is available in two versions:

• Non X-cap applications

• X-cap applications

EZ-PD™ PAG2P is designed to complement a secondary controlled AC/DC flyback converter topology. In this

topology, voltage and current regulation is performed by the secondary controller (EZ-PD™ PAG2S). EZ-PD™

PAG2P is responsible for providing the start-up function, driving the primary side FET as well as responding to

fault conditions.

Features

• Works across universal AC mains input from 85 VAC to 265 VAC

• Low-side gate driver to drive primary side FET

• A logic-level gate driver to control external high-side floating gate driver IC (ACF)

• Free-running oscillator with PWM generator for start-up

• Line under voltage protection (UVP) and line overvoltage protection (OVP)

• Secondary overvoltage protection via auxiliary winding (SOVP)

•Overcurrent protection (OCP)

• Short-circuit protection (SCP)

• VCC pin short protection (VCCPSP)

•Integrated VCC boost switch to support varied output voltage without the need for an external regulated LDO

• Integrated high-voltage start-up and shunt regulator

• A novel dual-output PET receiver is used to drive both high/low side switch using a single PET