DRV8841_15 Datasheet, PDF (9/28 Pages) Texas Instruments – Dual H-Bridge Driver IC

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7.2 Functional Block Diagram
DRV8841
SLVSAC0F – MAY 2010 – REVISED DECEMBER 2015
3.3V
V3P3OUT
3.3V
LDO
3.3V
AVREF
BVREF
AVREF
BVREF
LS Gate
HS Gate
Vcc
Drive
Drive
Internal
Logic
LDO
Vcc
Low-Side
LDO
Charge
Pump
VM
LS Gate HS Gate
Drive Drive
VCP
CP1
CP2
VMA
VM
VM
+ Bulk
Capacitor
AIN1
AIN2
AI0
AI1
BIN1
BIN2
BI0
BI1
nRESET
nSLEEP
V3P3OUT
DECAY
nFAULT
Thermal
Sensor
Gate
VM
Drive
Control
Logic
AVREF
ISENA
VM
LS Gate HS Gate
Drive Drive
Gate
VM
Drive
BVREF
ISENB
AOUT1
BDC
Motor
AOUT2
RSENSE
ISENA ^(optional)
VM
VMB
Stepper
Motor
BOUT1
BDC
Motor
BOUT2
RSENSE
ISENB ^(optional)
GND
PPAD
GND
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