34920 Driver Datasheet

34920 Datasheet, PDF, Equivalent


Part Number

34920

Description

Quad H-Bridge Motor Driver

Manufacture

Freescale Semiconductor

Total Page 29 Pages
Datasheet
Download 34920 Datasheet


34920
www.DFaretaeSshceeatl4eUS.ceommiconductor
Advance Information
Document Number: MC34920
Rev. 2.0, 1/2007
2.8 (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.
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.
Features
• Individual Thermal Limit Protection
• User-Selectable Motors: 2 DC Motors (2.4 A/Motor), 2 Step
Motors (W1-2 Phase Control), 1 DC Motor and 1 Step Motor
• 2 Buck Regulators (Switching @ 200 kHz)
• VV2 Output Voltage Is Programmable to 10 V to 15 V DC
(Externally Set)
• Low-Voltage Detection Reset (VV1 and VVB+)
• Pb-Free Packaging Designated by Suffix Code EI
H-BRIDGE MOTOR DRIVERS
FN SUFFIX
EI SUFFIX (PB-FREE)
98ASB42598B
44-PIN PLCC
ORDERING INFORMATION
Device
MC34920FN/R2
MC34920EI/R2
Temperature
Range (TA)
-40°C to 125°C
Package
44 PLCC
VVB+
VV1 VV2
++
MCU
34920
RESET
SDI
SCLK
CS
DR1PWM
DR2PWM
DR1A
DR2A
DR1B
DC
MOTOR
DC
MOTOR
GND CP1 CP2 VB
DR2B
VVB+
+
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.
© Freescale Semiconductor, Inc., 2007. All rights reserved.

34920
BLOCK DIAGRAM
BLOCK DIAGRAM
V1
Regulator
Oscillator
V2
Regulator
Boost
Voltage
Generator
RESET
CS
SCLK
SDI
DR1PWM
DR2PWM
RESET
Serial
Input
Port
Figure 2. 34920 Simplified Internal Block Diagram
DR1A1
DR1B1
DR1SENSE1
DR1A2
DR1B2
DR1SENSE2
DR2A1
DR2B1
DR2SENSE1
DR2A2
DR2B2
DR2SENSE2
34920
2
Analog Integrated Circuit Device Data
Freescale Semiconductor


Features www.DataSheet4U.com Freescale Semiconduc tor Advance Information Document Numb er: MC34920 Rev. 2.0, 1/2007 2.8 Ω ( Typ) Quad H-Bridge Motor Driver The 349 20 is a multifunctional analog ASIC. Th e 34920 integrates two circuits, four H -bridge drivers, a reset circuit in a s ingle IC, and two DC/DC switching volta ge regulators. Input voltage is 21 V to 42 V DC. Each motor of the two driver blocks can be configured as either a DC motor driver with pulse width modulati on (PWM)-control or a single bipolar st ep motor driver. In step motor mode, bo th drivers are capable of being operate d in the quarter step mode. In DC motor mode, both bridges in a driver are in parallel, providing 2.4 A of drive curr ent. In step motor mode, each bridge in a driver drives one phase. Each phase is driven with a bipolar current mode d rive. Features • Individual Thermal L imit Protection • User-Selectable Mot ors: 2 DC Motors (2.4 A / Motor), 2 Ste p Motors (W1-2 Phase Control), 1 DC Motor and 1 Step Motor • 2 Buck R.
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