BM6112FV-C
Description of Pins and Cautions on Layout of Board – continued
(13) PROOUT1, PROOUT2 (Soft turn-off pin / Gate voltage input pin)
These are pins for soft turn off of the gate of the power device when short circuit protection is activated. Both the
PROOUT1 pin and the PROOUT2 pin turn on for tPRO2ON (Typ 160 ns) from short circuit detection. After tPRO2ON (Typ
160ns), only the PROOUT1 pin continues to turn on. The PROOUT1 pin is also used to monitor gate voltage for output
state feedback function.
(14) SCPIN1, SCPIN2 (Short circuit current detection pin)
The SCPIN1 pin and the SCPIN2 pin are pins used to detect current for short-current protection. When the SCPIN1 pin
or the SCPIN2 pin voltage exceeds VSCDET (Typ 0.7 V), SCP function will be activated. This may cause the IC to
malfunction in an open state. To avoid such trouble, connect the SCPIN1 pin or the SCPIN2 pin to the GND2 pin
respectively if either of which is not used. In order to prevent the wrong detection due to noise, the noise mask time
tSCPFIL (Typ 0.3 µs) is set.
(15) TC (Resistor connection pin for setting constant current source output)
The TC pin is a resistor connection pin for setting the constant current output. If an arbitrary resistance value is
connected between the TC pin and the VEE2 pin, it is possible to set the constant current value output from the TO pin.
(16) TO (Constant current output pin / Sensor voltage input pin)
The TO pin is constant current output or voltage input pin. It can be used as a sensor input by connecting an element
with arbitrary impedance between the TO pin and the GND2 pin.
2. Description of Functions and Examples of Constant Setting
(1) Active Miller Clamping Function
When OUT1H Hi-Z and the OUT1H pin voltage < VOUT2ON (Typ 2 V), the OUT2 pin outputs High signal and the external
MOSFET is turned ON. Once OUT2 is turned High, OUT2 remains High even if OUT1H exceeds VOUT2ON (Typ 2 V).
When OUT1H = High, the OUT2 pin outputs Low signal and the external MOSFET is turned OFF.
OUT1H
OUT2
Hi-Z (Not less than VOUT2ON
)
L
H
L
Hi-Z (less than VOUT2ON
)
H
OUT1H, OUT1L
OUT1H
(Monitor gate voltage)
VOUT2ON
tDOUT2
(Typ 135 ns)
OUT2
Figure 55. Timing chart of active Miller clamping
(2) Fault Status Output Function
This function is used to output a fault signal from the FLT pin when short-circuit protection is activated and hold the Fault
signal until rising edge of the ENA is put in.
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