DRV8833_16 Datasheet, PDF (8/30 Pages) Texas Instruments – Dual H-Bridge Motor Driver

DRV8833
SLVSAR1E – JANUARY 2011 – REVISED JULY 2015
7 Detailed Description
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7.1 Overview
The DRV8833 device is an integrated motor driver solution for brushed DC or bipolar stepper motors. The device
integrates two NMOS H-bridges and current regulation circuitry. The DRV8833 can be powered with a supply
voltage from 2.7 to 10.8 V and can provide an output current up to 1.5-A RMS.
A simple PWM interface allows easy interfacing to the controller circuit.
The current regulation is a fixed frequency PWM slow decay.
The device includes a low-power sleep mode, which lets the system save power when not driving the motor.
7.2 Functional Block Diagram
VM
VM
10uF
Internal
Ref &
Regs
Charge
Pump
VM
AIN1
AIN2
BIN1
BIN2
nSLEEP
Gate
Drive
&
VM
OCP
Logic
ISEN
VM
nFAULT
Over-
Temp
Gate
Drive
&
VM
OCP
ISEN
2.2uF
VINT
VM
VCP
0.01uF
AOUT1
Drives 2x DC motor
or 1x Stepper
AOUT2
AISEN
DCM
Step
Motor
BOUT1
BOUT2
BISEN
DCM
GND
8
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