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34920

更新时间： 2022-04-23 23:00:11

品牌	Logo	应用领域
飞思卡尔 - FREESCALE		驱动器电机
页数	文件大小	规格书
29页	789K
描述
2.8 ohm (Typ) Quad H-Bridge Motor Driver

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34920 数据手册

Document Number: MC34920

Rev. 2.0, 1/2007

Freescale Semiconductor

Advance Information

2.8 Ω (Typ) Quad H-Bridge

Motor Driver

34920

The 34920 is a multifunctional analog ASIC. The 34920 integrates

two circuits, four H-bridge drivers, a reset circuit in a single IC, and

two DC/DC switching voltage regulators. Input voltage is 21 V to 42

V DC.

H-BRIDGE MOTOR DRIVERS

Each motor of the two driver blocks can be configured as either a

DC motor driver with pulse width modulation (PWM)-control or a

single bipolar step motor driver. In step motor mode, both drivers are

capable of being operated in the quarter step mode.

In DC motor mode, both bridges in a driver are in parallel, providing

2.4 A of drive current. In step motor mode, each bridge in a driver

drives one phase. Each phase is driven with a bipolar current mode

drive.

FN SUFFIX

EI SUFFIX (PB-FREE)

98ASB42598B

44-PIN PLCC

Features

• Individual Thermal Limit Protection

ORDERING INFORMATION

• User-Selectable Motors: 2 DC Motors (2.4 A/Motor), 2 Step

Motors (W1-2 Phase Control), 1 DC Motor and 1 Step Motor

Temperature

Package

Device

Range (T )

• 2 Buck Regulators (Switching @ 200 kHz)

• V_V2Output Voltage Is Programmable to 10 V to 15 V DC

(Externally Set)

MC34920FN/R2

MC34920EI/R2

-40°C to 125°C

44 PLCC

• Low-Voltage Detection Reset (V_V1and V_VB+

)

• Pb-Free Packaging Designated by Suffix Code EI

VB+

34920

DR1A

RESET

SDI

MCU

MOTOR

SCLK

DR2A

DR1B

DR1PWM

DR2PWM

MOTOR

GND CP1

CP2 VB

DR2B

VB+

Figure 1. 34920 Simplified Application Diagram

* This document contains certain information on a new product.

Specifications and information herein are subject to change without notice.

12 3 4 5 6 7...29

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