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PN8570 - Internal BJT Low Standby-Power Quasi-Resonant Primary-side Converter

Datasheet Summary

Description

The PN8570 consists of a Low Standby-Power QuasiResonant (QR) Primary-Side controller and BJT, specifically designed for a high performance AC/DC charger or adapter with minimal external components.

Features

  • Vo 100% ±5% 60% ±5% Features.
  • Internal BJT switch.
  • Multi-mode and Quasi-Resonant control technique.
  • ±5% CC Regulation at Universal AC input.
  • Primary-side Sensing and Regulation without TL431 and Opto-coupler.
  • Programmable Cable Drop Compensation.
  • No-need Control Loop Compensation Capacitor.
  • Excellent Protection include:.
  • Over Temperature Protection (OTP).
  • VDD Under/Over Voltage Protection(UVLO&OVP).
  • Cycle-by-Cycle Current Limiting (OCP).

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Datasheet preview – PN8570

Datasheet Details

Part number PN8570
Manufacturer Chipown
File Size 448.41 KB
Description Internal BJT Low Standby-Power Quasi-Resonant Primary-side Converter
Datasheet download datasheet PN8570 Datasheet
Additional preview pages of the PN8570 datasheet.

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Full PDF Text Transcription

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PN8570 Chipown Internal BJT Low Standby-Power Quasi-Resonant Primary-side Converter General description The PN8570 consists of a Low Standby-Power QuasiResonant (QR) Primary-Side controller and BJT, specifically designed for a high performance AC/DC charger or adapter with minimal external components. PN8570 operates in primary-side sensing and regulation, so opto-coupler and TL431 could be eliminated. In CV mode, multi-mode and quasi resonant technique is utilized to achieve high efficiency, avoid audible noise and make the system meeting Energy star level VI. Good load regulation is achieved by the built-in cable drop compensation. In CC mode, the current and output power setting can be adjusted externally by the sense resistor at CS pin.
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