PBL3775-1NS 데이터 시트보기 (PDF) - Ericsson

부품명

상세내역

일치하는 목록

PBL3775-1NS

Dual Stepper Motor Driver

Ericsson  

February 1999

PBL 3775/1

Dual Stepper Motor Driver

Description

The PBL 3775/1 is a switch-mode (chopper), constant-current driver IC with two

channels, one for each winding of a two-phase stepper motor. The circuit is similar to

Ericsson´s PBL 3773/1. While several of Ericsson´s dual stepper motor drivers are

optimized for micro-stepping applications, PBL 3775/1 is equipped with a disable

input to simplify half-stepping operation.

The PBL 3775/1 contains a clock oscillator, which is common for both driver

channels, a set of comparators and flip-flops implementing the switching control, and

two output H-bridges, including recirculation diodes.

Voltage supply requirements are + 5 V for logic and + 10 to + 45 V for the motor.

The close match between the two driver channels guarantees consistent output

current ratios and motor positioning accuracy.

Key Features

• Dual chopper driver in a single

package.

• Operation down to -40°C.

• 750 mA continuous output current

per channel.

• Low power dissipation, 2.0 W at

2 x 500 mA output current.

• Close matching between channels

for high microstepping accuracy.

• Digital filter on chip eliminates

external filtering components.

• Plastic 22-pin batwing DIL package,

24-pin SOIC batwing or 28-pin power

PLCC. All with lead-frame for

heatsinking through PC board

copper.

Phase 1

Dis1 VR1

C1

PBL 3775/1

VCC

VCC

–

+

E1

RQ

S

Logic

+

–

RC

Logic

+

SQ

R

–

Phase 2

Dis 2 VR2

C2

GND

E2

Figure 1. Block diagram

M A1

M B1

VMM1

VMM2

M B2

M A2

PBL3775/1

377P5B/1L

PBL 3775/1

28-pin PLCC package

22-pin plastic DIP package

24-pin SO package

Share Link: