Datasheet

DRV8302
www.ti.com SLES267 –AUGUST 2011
Table 1. Fault and Warning Reporting and Handling
REPORTING ON REPORTING ON
EVENT ACTION LATCH
FAULT PIN OCTW PIN
External FETs HiZ;
PVDD
Weak pull down of all gate N Y N
undervoltage
driver output
External FETs HiZ;
DVDD Weak pull down of all gate
N Y N
undervoltage driver output; When recovering,
reset all status registers
External FETs HiZ;
GVDD
Weak pull down of all gate N Y N
undervoltage
driver output
External FETs HiZ;
Weak pull down of all gate driver output
GVDD Shut down the charge pump
Y Y N
overvoltage Won’t recover and reset through
SPI reset command or
quick EN_GATE toggling
OTW None N N Y
Gate driver latched shut down.
Weak pull down of all gate driver output
OTSD_GATE Y Y Y
to force external FETs HiZ
Shut down the charge pump
OTSD_BUCK OTSD of Buck Y N N
Buck output
UVLO_BUCK: auto-restart N Y, in PWRGD pin N
undervoltage
Buck current limiting
Buck overload (HiZ high side until current reaches N N N
zero and then auto-recovering)
External FET
External FETs current Limiting
N N Y
overload – current limit
(only OC detected FET)
mode
Weak pull down of gate driver
External FET output and PWM logic “0” of
Y Y Y
overload – Latch mode LS and HS in the same phase.
External FETs HiZ
External FET
Reporting only N N Y
overload – reporting only
mode
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