Datasheet > CHL8505

CHL8505

更新时间： 2024-09-24 12:43:19

品牌	Logo	应用领域
英飞凌 - INFINEON		驱动器栅极 MOSFET栅极驱动
页数	文件大小	规格书
15页	263K
描述
High.Efficiency 5V MOSFET Gate Driver

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中文翻译

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CHL8505 数据手册

High‐Efficiency 5V MOSFET Gate Driver

CHL8505

FEATURES

DESCRIPTION



Ideal for Server Memory applications using +5V

The CHL8505 MOSFET is a high‐efficiency gate driver which

can switch both high‐side and low‐side N‐channel external

MOSFETs in a synchronous buck converter. It is intended

for use with IR Digital PWM controllers to provide a total

voltage regulator (VR) solution for today’s advanced

computing applications.

Fixed 5V Gate Drive

Large drivers designed to drive 3nF in < 15ns

with +5V drive



Low‐side driver – 2A source/4A sink

High‐side driver – 2A source/2A sink

Transitions times & Propagation delays < 15ns

The CHL8505 driver is capable of rapidly switching large

MOSFETs with low R_dsonand large input capacitance used

in high‐efficiency designs. It is uniquely designed to

operate from a 5V source such as a system 5V or 5V

standby voltages in sleep states.



Integrated bootstrap diode

Capable of high switching frequencies from 200kHz

up to greater than 1MHz



Compatible with IR’s patented Active Tri‐Level

(ATL) PWM for fastest response to transient

overshoot

The CHL8505 has a unique circuit which improves drive

strength to the external MOSFETs even with just 5V

supplied at the VDRV pin. This insures faster switching

comparable to drivers designed for +12V drive operation.

The integrated boot diode reduces external component

count. The CHL8505 also features an adaptive non‐overlap

control for shoot‐through protection.



Non‐overlap and under voltage protection

Thermally enhanced 10‐pin DFN package

Lead free RoHS compliant package

Low Quiescent power to optimize efficiency

The CHL8505 is configured to drive both the high and low‐

side switches from the patented IR fast Active Tri‐Level

(ATL) PWM signal, which will optimize the turn off time of

individual phases, optimizing transient performance.

APPLICATIONS



Multiphase synchronous buck converter for Server

CPUs and DDR Memory VR solutions



High efficiency and compact VRM

Optimized for Sleep state S3 systems using +5VSB

Notebook Computer and Graphics VR solutions

PIN DIAGRAM

BASIC APPLICATION

10 NC

PWM

VCC

Top View

GND

VDRV

LO_GATE

Pin 11

SWITCH

HI_GATE

3x3 DFN

BOOT

Figure 2: CHL8505 Package Top View

Figure 1: CHL8505 Basic Application Circuit

December 6, 2011 | FINAL | V1.05

12 3 4 5 6 7...15

中文翻译

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