Datasheet
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BM60052FV-EVK-001
© 2016 ROHM Co., Ltd. All rights reserved. 2016.3.4 Rev.002
www.rohm.co.jp
7. Description of each function
Input signal and enable signal, determine the output logic.
CN10: A_ENA
CN5: B_ENA
CN9: A_INB
CN4: B_INB
CN8: A_INA
CN3: B_INA
TH[9]: G-A (gate output)
TH[6]: G-B (gate output)
L x x L
H H x L
H L L L
H L H H
Logic H and L level input voltages are in the range 2.0 V ~ 5.5 V and 0 ~ 0.8 V, repectively.
DESAT detection, FLT signal output (A_FLT, B_FLT)
When the gate output is high and SiC-MOSFET's Vds is 4V or more, the gate voltage is lowered (soft turn-off) and FLT
signals (8-pin) are output. (0 V at detection and 4 V at steady state).
This operation is cleared at the rise of input signal ENA.
The FLT terminal is pulled up with the VREG terminal on the evaluation substrate at 10 k.
A detection suppression time of about 1 µs is defined after the gate rise.
For details of the DESAT detection function, refer to the data sheet of BM60052FV-C.
Gate bias voltage reduction detection (UVLO), gate state monitoring, RDY signal output (A_RDY, B_RDY)
When the gate bias voltage approximate 18V is decreased to approximate14V because of abnormalities such as gate
output short-circuit and an output over current, or the gate state monitoring finds an inconsistency between the input
and output, a RDY signal will be output (0 V at detection and 4 V at steady state).
When the power voltage increases to the voltage reduction detection level, the operation returns to the steady state.
The RDY terminal is pulled up with the VREG terminal on the evaluation substrate at 10 k.
Gate state monitoring filter time: 1.5 µs ~ 2.5 µs
Mirror clamp function
While the gate output is low, when the OUT2 terminal falls below a certain voltage level, the mirror clamp function starts
operating. Also, it starts operating at DESAT detection.
Mirror clamp detection voltage: 1.8 V ~ 2.2 V (between G and S)
For details of the mirror clamp function, refer to the data sheet of BM60052FV-C.
Thermal protection function
BM60052FV-C has temperature sensor voltage input terminals and integrates the thermal protection function. However,
these are set up as unavailable for this evaluation board.
(The connection hole of the module is connected to the connector and not to BM60052FV-C.)
CH1 (yellow, 2.0 V/div): INA
CH2 (light blue, 2.0 V/div): INB
CH3 (pink, 5.0 V/div): Gate output
t: 2 µs/div
