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G1558 - DIGITAL PWM

General Description

The G1558 is a high performance AC/DC power supply Switch for battery charger and adapter applications requirements up to 31W。It can meet less than 80 mW standby power.

G1558 is a current mode PWM Switch with a high voltage power MOSFET.

Key Features

  • Built-in Soft Start.
  • Random Frequency Adjustment to Reduce System EMI.
  • Audio Noise Free Operation.
  • Short Circuit Protection.
  • Internal Cable Compensation.
  • Extended Burst Mode Control For Improved Efficiency and Minimum Standby Power Design.
  • Internal Synchronized Slope Compensation.
  • Low VDD Startup Current and Low Operating Current.
  • Leading Edge Blanking on Current Sense Input.
  • Over Load Protection(OLP) and Cycle-by-Cycle Current Limiting Protecti.

📥 Download Datasheet

Datasheet Details

Part number G1558
Manufacturer Global Semiconductor
File Size 549.80 KB
Description DIGITAL PWM
Datasheet download datasheet G1558 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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G1558 High Performance Current Mode PWM Switch ANALOG PWM IC 1. General Description The G1558 is a high performance AC/DC power supply Switch for battery charger and adapter applications requirements up to 31W。It can meet less than 80 mW standby power. G1558 is a current mode PWM Switch with a high voltage power MOSFET. It operates in fixed frequency which is precisely set internally. It could operate in Extended Burst Mode at no load or light load, in which mode switching loss is minimized and the frequency is adjusted internally. To ensure that power supplies work quietly, the frequency is set beyond 20 KHz. Small current is needed when G1558 starts up and works, thus a large value resistor could be used in the startup circuit to minimize the standby power.