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| BQ24314EVM Datasheet, PDF (12/26 Pages) Texas Instruments – OVERVOLTAGE AND OVERCURRENT PROTECTION IC | |||
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bq24314
bq24316
SLUS763C â JULY 2007 â REVISED OCTOBER 2007
Power Down
All IC functions OFF
FAULT = HiZ
V(IN) > V(UVLO) ? No
Yes
Reset
Timers reset
Counters reset
FAULT = HiZ
FET off
No
CE = Low ?
Any State
if V(IN) < V (UVLO),
go to Power Down
Any State
if CE = Hi,
go to Reset
V(IN) < V(OVP) ?
No
Yes
Turn off FET
FAULT = Low
No
I < IOCP ?
Yes
Turn off FET
FAULT = Low
No Incr OCP counter
No
CE = Hi ?
Yes Go to Reset
No
count <15 ?
Wait tREC(OCP)
CE = Hi ?
Yes Go to Reset
Turn off FET
VBAT < BATOVP ?
No
FAULT = Low
Incr BAT counter
Yes
TJ < TJ(OFF) ?
No
Yes
Turn on FET
FAULT = HiZ
Turn off FET
FAULT = Low
No
count <15 ?
Figure 24. Flow Diagram
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Copyright © 2007, Texas Instruments Incorporated
Product Folder Link(s): bq24314 bq24316
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