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BM1051F - Quasi-Resonant Control DC/DC converter and Power Factor Correction converter

General Description

BM1051F is compounded LSI of Power Factor Correction converter (PFC) for harmonic solution and DC/DC converter (DC/DC).

Because DC/DC operates on Quasi-resonant method, DC/DC contributes to Low EMI.

BM1051F built in a HV starter circuit that tolerates 650V.

Key Features

  • -resonant circuit + PFC circuit.
  • Built-in HV Starter circuit.
  • Low consumption current (typ.10uA) when starter circuit is OFF.
  • Quasi resonant circuit Max operating frequency(120kHz) Frequency reduction function Over-current limiting variable function Pulse-by-pulse over-current protection circuit Built-in Soft start Voltage protection function (brown out) during low input ZT pin Over Voltage Protection Output overload protection (auto recovery /latch switching enabled) 250nsec Lea.

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Datasheet Details

Part number BM1051F
Manufacturer ROHM
File Size 2.40 MB
Description Quasi-Resonant Control DC/DC converter and Power Factor Correction converter
Datasheet download datasheet BM1051F 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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Datasheet Quasi-Resonant Control DC/DC converter and Power Factor Correction converter IC for AC/DC Converter BM1051F ●General Description BM1051F is compounded LSI of Power Factor Correction converter (PFC) for harmonic solution and DC/DC converter (DC/DC). Because DC/DC operates on Quasi-resonant method, DC/DC contributes to Low EMI. BM1051F built in a HV starter circuit that tolerates 650V. Because of putting the current sense resistors externally both the PFC part and the DC/DC part, IC enables power supply design free. In the PFC part, IC adopts peak current control operation.