SI9979D

更新时间： 2024-09-15 13:13:31

品牌	Logo	应用领域
威世 - VISHAY		运动控制电子器件信号电路电动机控制电机控制器
页数	文件大小	规格书
7页	263K
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SI9979D 数据手册

Si9979

Vishay Siliconix

Si9979

3-Phase Brushless DC Motor Controller

FEATURES

• Hall-Effect Commutation

é 60° or 120° Sensor Spacing

é Integral High-Side Drive for all

N-Channel MOSFET Bridges

é Quadrature Selection

é Tachometer Output

é Reversible

é Braking

é Output Enable Control

é Cross Conduction Protection

é Current Limiting

é Undervoltage Lockout

é Internal Pull-Up Resistors

é PWM Input

DESCRIPTION

The Si9979 is a monolithic brushless dc motor controller with

integral high-side drive circuitry. The Si9979 is configured to

allow either 60° or 120° commutation sensor spacing. The

internal low-voltage regulator allows operation over a wide

input voltage range, 20- to 40-V dc.

quadrature select, and braking inputs are included for control

along with a tachometer output. Protection features include

cross conduction protection, current limiting, and undervoltage

lockout. The FAULT output indicates when undervoltage, over

current, disable, or invalid sensor shutdown has occurred.

The Si9979 provides commutation from Hall-effect sensors.

The integral high-side drive, which utilizes combination

bootstrap/charge pump supplies, allows implementation of an

all n-channel MOSFET 3-phase bridge. PWM, direction,

The Si9979 is specified to operate over the commercial

temperature range of 0 to 70°C (C suffix), and the industrial

temperature range of -40 to 85°C (D suffix).

FUNCTIONAL BLOCK DIAGRAM

FaxBack 408-970-5600, request 70012

www.siliconix.com

S-60752-Rev. D, 05-Apr-99

12 3 4 5 6 7

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