Hi-Z

Enable,

Source

or Sink

nFAULT

Motor Lead

Short Condition

Normal DC

No Fault Condition

11

DRV8801A-Q1

www.ti.com

SLVSC79C – JUNE 2014 – REVISED JULY 2016

Product Folder Links: DRV8801A-Q1

Submit Documentation Feedback

Copyright © 2014–2016, Texas Instruments Incorporated

Figure 5. Overcurrent Control Timing

7.3.7 VPROPI

The VPROPI output is equal to approximately five times the voltage present on the SENSE pin. VPROPI is

meaningful only if there is a resistor connected to the SENSE pin. If the SENSE pin is connected to ground,

VPROPI measures 0 V. Also note that during slow decay (brake), VPROPI measures 0 V. VPROPI can output a

maximum of 2.5 V, because at 500 mV on SENSE, the H-bridge is disabled.

7.3.8 Protection Circuits

FAULT

ERROR REPORT

H-BRIDGE

CHARGE PUMP

RECOVERY

No error report – nFAULT

is hi-Z

Disabled

Shut Down

Overcurrent (OCP)

nFAULT pulled low

Disabled

Operating

Overtemperature Warning

(OTW)

nFAULT pulled low

Enabled

Operating

Overtemperature

Shutdown (OTS)

nFAULT remains pulled

low (set during OTW)

Disabled

Shut Down

bridge are disabled and the charge pump is disabled. The nFAULT pin does not report the UVLO fault condition