ACT412
Rev 1, 30-Oct-13
TYPICAL APPLICATION CONT’D
enter the restart process. A counter is used to
reduce sensitivity to noise and prevent the auto
start unnecessary.
Open Loop Protection
ACT412 is able to protect itself from damage when
the control loop is open. The typical open loop
condition includes either VFB floating or RFB5
open.
Over Temperature Shutdown
The thermal shutdown circuitry detects the ACT412
die temperature. The threshold is set at typical
135˚C. When the die temperature rises above this
threshold (135˚C) the ACT412 is disabled and
remains disabled until the die temperature falls
below 115˚C, at which point the ACT412 is re-
enabled.
Innovative PowerTM
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