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M81019FP

High Voltage Half-Bridge Driver 1200 Volts/±1 Ampere

Powerex 

Powerex, Inc., 200 E. Hillis Street, Youngwood, Pennsylvania 15697-1800 (724) 925-7272

M81019FP

HVIC, High Voltage Half-Bridge Driver

1200 Volts/±1 Ampere

4. FO Input Timing Diagram

When FO is pulled low by an enternal signal, the output will be shut down. As soon as FO goes high again, the output will respond to the

next active input signal.

HIN

LIN

FO

NOTE 1: This diagram does not show delay time

between input and output.

NOTE 2: FO pulse width should be set to more than

400ns for FO input filter circuit.

HOUT

LOUT

5. Low Side VCC Supply Power Reset Sequence

When VCC supply voltage is lower than power reset trip voltage, the power reset trips and output is locked out. As soon as VCC supply

voltage does higher than power reset trip voltage, the output will respond to the next active input signal.

VCC

VPOR Voltage

HIN

LIN

HOUT

LOUT

6. High-Side VBS Supply Under Voltage Lockout Sequence

When VBS supply voltage goes lower than VBS supply UV trip voltage for a period than the VBS supply UV filter time, HOUT goes low

regardles of HIN. As soon as VBS supply voltage goes higher than VBS supply reset voltage, the output will respond to the next active

HIN signal.

VBSuvr

VBS

VBSuvt

VBSuvr

VBS Supply UV Hysteresis Voltage

VBS Supply UV Filter Time

HIN

LIN

NOTE 1: This diagram does not show delay time

between input and output.

NOTE 2: At power supply start-up it is recommended

that dVBS/dt should be controlled to avoid H latch of

outputs.

HOUT

LOUT

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