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G1138 - ANALOG PWM

General Description

G1138 is a high performance offline PWM Power switch for low power AC/DC charger and adaptor applications up to 16W.It operates in primary-side regulation.

Consequently, opto-coupler and tl431 could be eliminated.

Key Features

  • including Cycle-by-Cycle current limiting, VDD OVP, VDD clamp and UVLO.

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Datasheet Details

Part number G1138
Manufacturer Global Semiconductor
File Size 692.70 KB
Description ANALOG PWM
Datasheet download datasheet G1138 Datasheet

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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G1138 High Precision CC/CV Primary-Side PWM Power Switch 1. General Description G1138 is a high performance offline PWM Power switch for low power AC/DC charger and adaptor applications up to 16W.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.