Description

G1135P is a high performance offline PWM

Power switch for low power AC/DC charger and

adaptor applications up to 12W.It operates in

primary-side regulation. Consequently,

opto-coupler and TL431 could be eliminated.

Proprietary Constant Voltage (CV) and Constant

Current (CC) control is integrated as shown In

the Fig.1. In CC control,the current and output

power setting can be adjusted externally by the

sense resistor RS at CS pin. In CV control,

multi-mode operations are utilized to achieve

high performance and high efficiency.

In addition, good load regulation is achieved by

the built-in cable drop compensation. Device

operates in PFM in CC mode as well at large load

condition and it operates in PWM with frequency

reduction at light/medium load.

G1135P offers power on soft start control and

protection coverage with auto-recovery features

including Cycle-by-Cycle current limiting, VDD

OVP, VDD clamp and UVLO. Excellent EMI

performance is achieved with frequency jitter

technique.

Features

◆ 5% CV and CC Regulation at Universal

AC input

◆ Primary-side Regulation Without TL431

and Opto-coupler

◆ Built-in High-Voltage Power MOS

◆ Programmable CV and CC Regulation

◆ Adjustable Constant Current and Output

Power Setting

◆ Built-in Secondary Constant Current

Control with Primary Side Feedback

◆ Built-in Primary winding inductance

compensation

◆ Programmable cable drop compensation

◆ Built-in Leading Edge Blanking (LEB)

◆ Power on Soft-start

◆ Built-in adaptive current peak regulation

◆ Cycle-by-Cycle Current Limiting

◆ VDD Under Voltage Lockout with

Hysteresis (UVLO)

◆ VDD OVP and VDD Clamp

◆ Pb-free DIP-7

Applications

◆ Cell Phone Charger

◆ Digital Cameras Charger

◆ LED Driver

◆ Small Power Adaptor

◆ Auxiliary Power for PC, TV etc.

◆ Linear Regulator/RCC Replacement