Datasheet > RT9619APS

RT9619APS

更新时间： 2022-04-23 23:00:11

品牌	Logo	应用领域
立锜 - RICHTEK		驱动器
页数	文件大小	规格书
12页	423K
描述
Synchronous-Rectified Buck MOSFET Drivers

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RT9619APS 数据手册

RT9619/A

Synchronous-Rectified Buck MOSFET Drivers

General Description

Features

^zDrives Two N-Channel MOSFETs

^zAdaptive Shoot-Through Protection

^zEmbedded Boot Strapped Diode

^zSupports High Switching Frequency

^zFast Output Rise Time

The RT9619/A is a high frequency, dual MOSFET driver

specifically designed to drive two power N-Channel

MOSFETs in a synchronous-rectified buck converter

topology. This driver combined with Richtek's series of

Multi-Phase Buck PWM controller form a complete core-

voltage regulator solution for advanced micro-processors.

^zSmall SOP-8 Package

^zTri-State Input for Bridge Shutdown

^zSupply Under Voltage Protection

^zUpper MOSFET Direct Shorted Protection

^zRoHS Compliant and 100% Lead (Pb)-Free

The RT9619/A drives both the lower/upper gate in a

synchronous-rectifier bridge with 12V. This drive-voltage

flexibility provides the advantage of optimizing applications

involving trade-offs between switching losses and

conduction losses.

Applications

RT9619Ahas longer UGATE/LGATE deadtime which can

drive the MOSFETs with large gate RC value, avoiding the

shoot-through phenomenon. RT9619 is targeted to drive

low gate RC MOSFETs and performs better efficiency.

z Core Voltage Supplies forDesktop, Motherboard CPU

z High Frequency Low ProfileDC-DC Converters

z High Current Low VoltageDC-DC Converters

The output drivers in the RT9619/A can efficiently switch

power MOSFETs at frequency up to 500kHz. Switching

frequency above 500kHz has to take into account the

thermal dissipation of SOP-8 package. RT9619/A is

capable to drive a 3nF load with a 30ns rise time.

RT9619/Aimplements bootstrapping on the upper gate with

an external capacitor and an embedded diode. This reduces

implementation complexity and allows the use of higher

performance, cost effectiveN-Channel MOSFETs.Adaptive

shoot-through protection is integrated to prevent both

MOSFETs from conducting simultaneously.

Ordering Information

RT9619/A

Package Type

S : SOP-8

Operating Temperature Range

P : Pb Free with Commercial Standard

G : Green (Halogen Free with Commer-

cial Standard)

Long Dead Time

Short Dead Time

Note :

RichTek Pb-free and Green products are :

`RoHS compliant and compatible with the current require-

ments of IPC/JEDEC J-STD-020.

Pin Configurations

`Suitable for use in SnPb or Pb-free soldering processes.

`100% matte tin (Sn) plating.

(TOP VIEW)

BOOT

PWM

UGATE

PHASE

PGND

VCC

LGATE

SOP-8

DS9619/A-04 March 2007

www.richtek.com

12 3 4 5 6 7...12

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