Datasheet > MIC5020

MIC5020

更新时间： 2024-11-07 14:55:35

品牌	Logo	应用领域
美国微芯 - MICROCHIP		/
页数	文件大小	规格书
8页	183K
描述
The MIC5020 low-side MOSFET gate driver is designed to operate at frequencies greater than 100 kHz

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MIC5020 数据手册

MIC5020

Micrel, Inc.

MIC5020

Current-Sensing Low-Side MOSFET Driver

General Description

Features

TheMIC5020low-sideMOSFETdriverisdesignedtooperate

at frequencies greater than 100kHz (5kHz PWM for 2% to

100% duty cycle) and is an ideal choice for high-speed ap-

plications such as motor control, SMPS (switch mode power

supplies), and applications using IGBTs. The MIC5020 can

also operate as a circuit breaker with or without automatic

retry. The MIC5020’s maximum supply voltage lends itself

to control applications using up to 50V. The MIC5020 can

control MOSFETs that switch voltages greater than 50V.

• 11V to 50V operation

• 175ns rise/fall time driving 2000pF

• TTL compatible input with internal pull-down resistor

• Overcurrent limit

• Fault output indication

• Gate to source protection

• Compatible with current sensing MOSFETs

Applications

• Lamp control

• Heater control

• Motor control

• Solenoid switching

• Switch-mode power supplies

• Circuit breaker

Arising or falling edge on the input results in a current source

or sink pulse on the gate output. This output current pulse

canturnonoroffa2000pFMOSFETinapproximately175ns.

The MIC5020 then supplies a limited current (< 2mA), if

necessary, to maintain the output state.

Anovercurrentcomparatorwithatripvoltageof50mVmakes

the MIC5020 ideal for use with a current sensing MOSFET.

An external low value resistor may be used instead of a

sensing MOSFET for more precise overcurrent control. An

optional external capacitor connected to the C pin may be

Ordering Information

used to control the current shutdown duty cycle from 20%

to < 1%. A duty cycle from 20% to about 75% is possible

with an optional pull-up resistor from C to V . An open

Part Number

Temperature

Range

Package

Standard

MIC5020BM

Pb-Free

collector output provides a fault indication when the sense

inputs are tripped.

MIC5020YM

–40ºC to +85ºC 8-pin SOIC

The MIC5020 is available in 8-pin SOIC package.

Other members of the MIC502x series include the MIC5021

high-side driver and the MIC5022 half-bridge driver with a

cross-conduction interlock.

Typical Application

V+

+11V to +50V

10µF

MIC5020

N-Channel

Power MOSFET

V_DD

Gate

150kHz max.

Input

Fault

C_T

Sense-

Sense+

Gnd

50mV

I_TRIP

R_SENSE

optional*

R_SENSE

* increases time before retry

Low-Side Driver with Overcurrent Trip and Retry

Micrel, Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com

July 2005

MIC5020

12 3 4 5 6 7 8

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与MIC5020相关器件

型号	品牌	获取价格	描述	数据表
MIC5020_05	MICREL	获取价格	Current-Sensing Low-Side MOSFET Driver
MIC5020AJ	MICREL	获取价格	Buffer/Inverter Based MOSFET Driver, BIMOS, CDIP8, CERDIP-8
MIC5020AJB	MICREL	获取价格	Buffer/Inverter Based MOSFET Driver, BIMOS, CDIP8, CERDIP-8
MIC5020AJBQ	MICREL	获取价格	Buffer/Inverter Based MOSFET Driver, CDIP8, CERDIP-8
MIC5020BM	MICREL	获取价格	Current-Sensing Low-Side MOSFET Driver
MIC5020BM	MICROCHIP	获取价格	Buffer/Inverter Based MOSFET Driver, BIMOS, PDSO8, SOIC-8
MIC5020BMT&R	MICREL	获取价格	Buffer/Inverter Based MOSFET Driver, BIMOS, PDSO8, SOIC-8
MIC5020BN	MICREL	获取价格	Current-Sensing Low-Side MOSFET Driver
MIC5020YM	MICROCHIP	获取价格	BUF OR INV BASED MOSFET DRIVER, PDSO8
MIC5021	MICREL	获取价格	High-Speed High-Side MOSFET Driver

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