A4933KJPTR-T Allegro Microsystems Inc, A4933KJPTR-T Datasheet

A4933KJPTR-T

Manufacturer Part Number

A4933KJPTR-T

Description

IC PREDRIVER MOSFET 3PH 48LQFP

Manufacturer

Allegro Microsystems Inc

Datasheet

1.A4933KJPTR-T.pdf (25 pages)

Specifications of A4933KJPTR-T

Lead Free Status / Rohs Status

Lead free / RoHS Compliant

Available stocks

Company

Part Number

Manufacturer

Quantity

Price

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

A4933KJPTR-T

Manufacturer:

Quantity:

101

Company:

BOSTOCK HK LIMITED

Part Number:

A4933KJPTR-T

Manufacturer:

Allegro MicroSystems, LLC

Quantity:

10 000

Current page: 1 of 25
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Features and Benefits

▪ High current 3-phase gate drive for large N-channel

▪ Pin compatible with Allegro

▪ Cross-conduction protection with adjustable dead time

▪ Top-off charge pump for 100% PWM

▪ Charge pump for low supply voltage operation

▪ Uncommitted current sense amplifier

▪ 5.5 to 50 V supply voltage range

▪ Compatible with 3.3 V and 5 V logic

▪ Extensive diagnostic outputs

▪ Low-current sleep mode

Package: 48-pin LQFP with exposed

thermal pad (suffix JP)

Not to scale

4933-DS

MOSFETs

VBAT

A4935KJP

Regulator

controller

A4405

Micro-

DSP

Current Sense

Diagnostics

Typical Application

Automotive 3-Phase MOSFET Driver

Control

A4933

Description

The A4933 is a 3-phase controller for use with N-channel

external power MOSFETs and is specifically designed for

automotive applications.

A unique charge pump regulator provides full (>10 V) gate

drive for battery voltages down to 7 V and allows the A4933

to operate with a reduced gate drive, down to 5.5 V.

A bootstrap capacitor is used to provide the above-battery

supply voltage required for N-channel MOSFETs. An internal

charge pump for the high-side drive allows DC (100% duty

cycle) operation.

Full control over all six power FETs in the 3-phase bridge is

provided, allowing motors to be driven with block commutation

or sinusoidal excitation. The power FETs are protected from

shoot-through by integrated crossover control and resistor-

adjustable dead time.

Bridge current can be measured using an integrated current

sense amplifier. This is an uncommitted differential amplifier

with a below-ground common mode range allowing it to be

used in low-side current sense applications. Gain and offset

are defined by external resistors.

Continued on the next page…

VBAT

3-Phase

BLDC

Motor

A4933

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