Data Sheet

FAN7093_F085
High Current PN Half Bridge
December 2011
7.3.5 Truth table
Device state

IN HS LS IS Mode
Normal operation 0 X OFF OFF 0 Stand-by mode
Normal operation 1 0 OFF ON CS LS active
Normal operation 1 1 ON OFF CS HS active
Over voltage
X X ON OFF 1
Shut-down of LS,
HS activated, error detected
Under voltage X X OFF OFF 0 UV lockout
Over temperature
Or shorted LS or HS 0 X OFF OFF 0 Stand-by mode, reset of latch
Over temperature
Or shorted LS or HS 1 X OFF OFF 1 Shut-down with latch, error detected
Current limit 1 1 OFF ON 1 Switched mode, error detected
8
)
Current limit 1 0 ON OFF 1 Switched mode, error detected
8
)
8) Device will return to normal operation after time tcls. The error signal will be reset after 2*tcls.
Inputs Power FETs Status flag IS
0 = logic low OFF = turned off CS = current sense mode
1 = logic high ON = turned on 1 = logic high (error)
X = Don’t care
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