Datasheet > AMT49502

AMT49502

更新时间： 2024-10-27 02:52:11

品牌	Logo	应用领域
急速微 - ALLEGRO		/
页数	文件大小	规格书
45页	2035K
描述
80 V Automotive Half-Bridge MOSFET Driver

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AMT49502 数据手册

AMT49502

80 V Automotive Half-Bridge MOSFET Driver

FEATURES AND BENEFITS

DESCRIPTION

The AMT49502 is an N-channel power MOSFET driver

capable of controlling MOSFETs connected in a half-bridge

arrangement and is specifically designed for automotive

applicationswithhigh-powerinductiveloads,suchasbrushDC

motors,BLDCmotors,VR/SRmotors,solenoids,andactuators.

• Half-bridge MOSFET driver

• Bootstrap gate drive for N-channel MOSFET bridge

• Independent control of high-side and low-side gate drives

with cross-conduction capability

• Charge pump regulator for low supply voltage operation

• 5.5 to 80 V supply voltage operating range

• Integrated logic I/O supply

• SPI-compatible serial interface

• Bridge control by direct logic inputs or serial interface

• Programmable gate drive

Auniquechargepumpregulatorprovidesfullgatedriveoverthe

fullsupplyvoltagerangefrom5.5to80Vformostapplications.

A bootstrap capacitor is used to provide the above-battery

supply voltage required for N-channel MOSFETs.

EachMOSFETcanbe independentlycontrolledbylogic-level

inputs or through the SPI-compatible serial interface. Fully

independent control allows both external FETs to be turned

on at the same time.

• Current sense amplifier

• Programmable diagnostics

• A²SIL™ product—device features for

safety-critical systems

• AEC-Q100 Grade 0 qualified

Integrated diagnostics provide indication of multiple internal

faults, system faults, and power bridge faults, and can be

configured to protect the power MOSFETs under most short

circuit conditions.

In addition to providing full access to the bridge control, the

serialinterfaceisalsousedtoalterprogrammablesettingssuch

as VDS threshold and fault blank time. Detailed diagnostic

information can be read through the serial interface.

PACKAGE:

24-lead TSSOP with

exposed pad (suffix LP)

The AMT49502 was developed in accordance with

ISO26262:2011asahardwaresafetyelementoutofcontextwith

ASIL B capability (pending assessment) for use in automotive

safety-related systems when integrated and used in the manner

prescribedintheapplicablesafetyapplicationnoteanddatasheet.

The AMT49502 is supplied in a 24-lead eTSSOP (suffix LP).

This package is lead (Pb) free, with 100% matte-tin leadframe

plating (suffix –T).

Not to scale

VBAT

Control

Load

AMT49502

DSP

µC

Diagnostics

Current Sense

Figure 1: Typical Applications

AMT49502-DS, Rev. 1

MCO-0000796

June 15, 2020

12 3 4 5 6 7...45

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