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OB2734D - High Performance Multi-Mode PWM Power Switch

This page provides the datasheet information for the OB2734D, a member of the OB2734DCCP-H High Performance Multi-Mode PWM Power Switch family.

Datasheet Summary

Description

OB2734x is a highly integrated current mode PWM controller with a 650V GaN FET integrated.

It is optimized for high performance, low EMI, low standby power consumption and wide output voltage range PD adapter solutions, together with PD secondary controller, such as OB2623.

Features

  • Multi-Mode Operation 110KHz maximum clamping frequency in QR mode @ high line voltage 25KHz minimum clamping frequency in QR mode @ high line voltage 130KHz maximum clamping frequency in QR mode @ low line voltage 70KHz minimum clamping frequency in CCM mode @ low line voltage Valley switching operation @ Green mode Burst Mode @ Light Load & No Load.
  • Forced valley switching for EMI optimization.
  • Extended burst mode control for improved efficiency and low standby power.
  • Power.

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Datasheet preview – OB2734D

Datasheet Details

Part number OB2734D
Manufacturer On-Bright Electronics
File Size 1.34 MB
Description High Performance Multi-Mode PWM Power Switch
Datasheet download datasheet OB2734D Datasheet
Additional preview pages of the OB2734D datasheet.

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Full PDF Text Transcription

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OB2734x High Performance Multi-Mode PWM Power Switch GENERAL DESCRIPTION OB2734x is a highly integrated current mode PWM controller with a 650V GaN FET integrated. It is optimized for high performance, low EMI, low standby power consumption and wide output voltage range PD adapter solutions, together with PD secondary controller, such as OB2623. The controller is as well compatible with cost effective offline flyback converter applications covering a wide output range. At full load conditions, it operates in the valley switching QR mode both in the low line input and high line input. When the loading goes low, it operates in PFM mode for high power conversion efficiency. When the load is very small, the IC operates in ‘Extended Burst Mode’ to minimize the standby power loss.
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