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34920

Freescale Semiconductor
Part Number 34920
Manufacturer Freescale Semiconductor
Description Quad H-Bridge Motor Driver
Published Aug 8, 2007
Detailed Description www.DataSheet4U.com Freescale Semiconductor Advance Information Document Number: MC34920 Rev. 2.0, 1/2007 2.8 Ω (Typ)...
Datasheet PDF File 34920 PDF File

34920
34920

Overview
www.
DataSheet4U.
com Freescale Semiconductor Advance Information Document Number: MC34920 Rev.
2.
0, 1/2007 2.
8 Ω (Typ) Quad H-Bridge Motor Driver 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 VVB+ VV1 + 34920 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 VV2 + 34920 V1_FB VB+ V1_SWITCH V2_SWITCH V2_FB DR1A DC MOTOR MCU RESET SDI SCLK CS DR2A DR1B DC MOTOR DR1PWM DR2PWM 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.
BLOCK DIAGRAM BLOCK DIAGRAM V1_SWITCH V2_SWITCH V1_FB V2_FB CP1 CP2 VB+ V1 Regulator Oscillator V2 Regulator Boost Voltage Generator VB+ VB DR1A1 DR1B1 DR1SENSE1 RESET RESET...


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