Datasheet > A4900KLQTR-T

A4900KLQTR-T

更新时间： 2022-02-26 13:30:30

品牌	Logo	应用领域
急速微 - ALLEGRO		栅
页数	文件大小	规格书
17页	746K
描述
High Voltage Three Phase Gate Driver

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A4900KLQTR-T 数据手册

A4900

High Voltage Three Phase Gate Driver

Description

Features and Benefits

The A4900 is a high-voltage, high-speed, power IGBT or

MOSFET driver providing three independent half-bridge

channels for three-phase applications.

• High voltage 3-phase gate drive

• Floating high-side gate drive to 550 VDC supply

• Tolerant to high voltage slew rates

• Cross-conduction protection with fixed dead time

• 15 V gate drive supply voltage

• TTL compatible logic inputs

• Undervoltage detection

• Overcurrent detection with integrated fault blanking

• Overtemperature shutdown

• Matched propagation delays

A bootstrap capacitor is used to provide the above battery

supply voltage required for N-channel MOSFETs or IGBTs

used as high current switches. Direct control over all six gate

drives in the 3-phase bridge is provided, allowing motors to

be driven with block commutation or sinusoidal excitation.

The power switches are protected from cross-conduction

by integrated crossover control and fixed dead time.

• Detailed fault reporting

Integrated diagnostics provide indication of undervoltage,

overtemperature, and power bridge faults. They can be

configured to protect the power switches under most short

circuitconditions. Detaileddiagnosticsareavailableasaserial

data word output.

Package: 44-pin QSOP (suffix LQ)

TheA4900 is provided in a 44-pin QSOP package (suffix LQ)

that is lead (Pb) free, with 100% matte tin leadframe plating.

Not to scale

Typical Application Diagram

V_CC

V_M

Control

3-Phase

Motor

A4900

Diagnostics

December 5, 2016

A4900-DS, Rev. 7

123 4 5 6 7...17

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