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| DRV8801A-Q1_15 Datasheet, PDF (12/24 Pages) Texas Instruments – DRV8801A-Q1 DMOS Full-Bridge Motor Drivers | |||
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DRV8801A-Q1
SLVSC79A â JUNE 2014 â REVISED SEPTEMBER 2014
www.ti.com
7.3.8.4 Overtemperature Shutdown (OTS)
If the die temperature exceeds the thermal shutdown temperature, all FETs in the H-bridge are disabled and the
charge pump shuts down. The nFAULT pin remains pulled low during this fault condition. When the die
temperature falls below the hysteresis threshold, operation automatically resumes.
FAULT
VBB undervoltage (UVLO)
Overcurrent (OCP)
Overtemperature Warning
(OTW)
Overtemperature
Shutdown (OTS)
ERROR REPORT
No error report â nFAULT
is hi-Z
nFAULT pulled low
nFAULT pulled low
nFAULT remains pulled
low (set during OTW)
H-BRIDGE
Disabled
Disabled
Enabled
Disabled
CHARGE PUMP
Shut Down
Operating
Operating
Shut Down
RECOVERY
VBB > VUVLO RISING
Retry time, t(OCP)
TJ < T(OTW) â Thys(OTW)
TJ < T(OTS) â Thys(OTS)
7.4 Device Functional Modes
The DRV8801A-Q1 device is active unless the nSLEEP pin is brought logic low. In sleep mode the charge pump
is disabled and the H-bridge FETs are disabled hi-Z. The DRV8801A-Q1 device is brought out of sleep mode
automatically if nSLEEP is brought logic high.
12
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