DRV8802-Q1_15 Datasheet, PDF (8/26 Pages) Texas Instruments – DRV8802-Q1 Automotive DC Motor-Driver IC

DRV8802-Q1
SLVSCI2A – JUNE 2014 – REVISED JUNE 2014
7 Detailed Description
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7.1 Overview
The DRV8802-Q1 device provides an integrated motor driver solution for automotive applications. The device
has two H-bridge drivers, and is intended to drive DC motors. The output driver block for each consists of N-
channel power MOSFET’s configured as H-bridges to drive the motor windings. The DRV8802-Q1 device can
supply up to 1.6-A peak or 1.1-A RMS output current (with proper heatsinking at 24 V and 25°C) per H-bridge. A
simple parallel digital control interface is compatible with industry-standard devices. Decay mode is
programmable to allow braking or coasting of the motor when disabled. Internal shutdown functions are provided
for over current protection, short circuit protection, under voltage lockout and overtemperature.
7.2 Functional Block Diagram
VM ^VM
V3P3OUT
3.3 V
3.3 V
AVREF
BVREF
APHASE
AENBL
AI0
AI1
BPHASE
BENBL
BI0
BI1
DECAY
nRESET
nSLEEP
nFAULT
Internal
Reference &
Regs
Thermal
Shut down
Int. VCC
LS Gate
Drive
Charge
Pump
HS Gate
Drive
CP1
0.01 mF
CP2
VM
VCP
0.1 mF
VMA
1 MW
VM
Motor
Driver A
AOUT1
DCM
AOUT2
ISENA
Control
Logic
Motor
Driver B
VM
VMB
BOUT1
DCM
BOUT2
ISENB
8
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GND
GND
Product Folder Links: DRV8802-Q1
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