PBL3770ASOT

更新时间： 2024-11-07 22:26:51

品牌	Logo	应用领域
爱立信 - ERICSSON		电机驱动
页数	文件大小	规格书
8页	144K
描述
High Performance Stepper Motor Drive Circuit

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PBL3770ASOT 数据手册

February 1999

PBL 3770A

High Performance

Stepper Motor Drive Circuit

Description

Key Features

PBL 3770A is a bipolar monolithic circuit intended to control and drive the current in

one winding of a stepper motor. It is a high power version of PBL 3717 and special

care has been taken to optimize the power handling capability without suffering in

reliability.

•

Half-step and full-step operation.

•

Switched mode bipolar constant

current drive

The circuit consists of a LS-TTL compatible logic input stage, a current sensor, a

monostable multivibrator and a high power H-bridge output stage. The circuit is

pin-compatible with the PBL 3717 industry-standard driver.

Two PBL 3770A and a small number of external components form a complete

control and drive unit for LS-TTL or microprocessor-controlled stepper motor

systems.

•

Wide range of current control

5 -1800 mA.

•

Wide voltage range 10 - 45 V.

Designed for unstabilized motor

supply voltage.

•

Current levels can be selected in

steps or varied continuously.

Thermal overload protection.

PBL3770A

Schmitt

Trigger

Time

Delay

Phase

PBL

≥1

3770A

–

Output Stage

–

PBL 3770A

Monostable

t_off= 0.69 • R_T• C_T

–

GND

Current Sensor

PBL 3770A

16-pin plastic batwing DIP

28-pin plastic PLCC package

20-pin SO

Figure 1. Block diagram.

12 3 4 5 6 7 8

中文翻译

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