Datasheet > FA6B20N

FA6B20N

更新时间： 2024-04-09 19:00:38

品牌	Logo	应用领域
富士电机 - FUJI		/
页数	文件大小	规格书
56页	1374K
描述
16pin SOP

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FA6B20N 数据手册

Current resonant control IC

FA6B20N

1. Overview

Datasheet

FA6B20N is a switching power supply control IC for LLC current resonant converter.

It incorporates a 600V start up circuit, downsizing the circuit and enabling low-power consumption. It also incorporates a

600V high-side driver and low side driver, which can drive directly both high-side and low-side MOSFETs with 50% duty

cycle alternatively.

To ensure high reliability of the power supply, the capacitive mode prevention function, high-accuracy overload

protection function and overcurrent protection function with adjustable delay time are provided. In addition, efficiency at

light load is improved with low standby mode, therefore auxiliary power supply for standby can be removed.

When it is used with Fuji CRM PFC control IC “FA1A60N”, FA6B20N controls PFC IC operating mode (continuous,

burst or stop operation). It helps to improve efficiency of PSU, optimize the PFC operation and reduce external

components.

Since a small package of 16 pins is used and the number of exterior parts is substantially reduced, space- and cost-

saving power supply can be obtained.

2. Features

・The integrated startup circuit achieves downsized power supply and lower

power consumption.

・Operating mode can be switched between normal operation mode and low

standby mode.

・”Auto standby operation” and “Standby operation by external signal” are

selectable.

・During the low standby mode, standby power is lowered by the burst mode

operation.

・Integrated input filter X-capacitor discharge function decreases loss due to

discharge resistance.

・Low consumption current, 0.80mA (Vcc quiescent current).

・Integrated high-side and low-side drive circuits, which can be directly connected

to the power MOSFET and operates with 50% duty cycle.

・Since the dead time is set automatically within the IC, capacitive mode and hard

switching are prevented.

Package：SOP-16

・Various protection functions: overcurrent (IS pin), overload (CA,FB pin),

overvoltage (VCC pin), overheat and protection by external signal (MODE pin).

・Integrated level-fixed brown-in/out function (VH pin)

・Various mode selection settings can be made: overcurrent protection (detection

by IS pin) delay time setting, operation setting in standby mode, and adjusting

output power switching to standby mode.

・Under voltage lock out function (VCC,VB pin)

・Package: SOP-16 (compliant with JEDEC)

3. Application circuit example (FA1A60N,FA6B20N)

May, 2017 DS-180E Rev1.1

1/50

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