M81706AFP datasheet(4/4 Pages) POWEREX

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M81706AFP

HVIC, High Voltage Half-Bridge Driver

600 Volts/+120mA/-250mA

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

6/05

TIMING DIAGRAM

1. Input/Output Timing Diagram

HIGH ACTIVE – When input signal (HIN or LIN) is “H”, then output signal (HO or LO) is “H”. In the case of both input signals (HIN and LIN)

are “H”, then output signals (HO and LO) become “L”.

When VCC supply voltage keeps lower UV trip voltage (VCCuvt = VCCuvr – VCCuvh) for VCC supply UV filter time, output signal becomes

“L”. And then, when VCC supply voltage is higher than UV reset voltage, output signal LO becomes “H”.

HIN

LIN

VCCuvt

VCCuvr

tVCCuv

VCCuvh

VCC

2. VCC(VBS) Supply Under Voltage Lockout Timing Diagram

It is recommended supplying VCC first and VBS second. In the case of shutting off supply voltage, shut off VBS

first and shut off VCC second. At the time of starting VCC and VBS, power supply should be increased slowly. If it is increased

rapidly, output signal (HO or LO) may be “H”.

3. Allowable Supply Voltage Transient

Note: This device has high voltage between closely spaced pins. In most applications, supplemental insulation will be required.

When VBS supply voltage keeps lower UV trip voltage (VBSuvt = VBSuvr – VBSuvh) for VBS supply UV filter time, output signal becomes

“L”. And then, VBS supply voltage is higher than UV reset voltage, output signal HO keeps “L” until next input signal HIN is “H”.

HIN

VBSuvt

VBSuvr

tVBSuv

VBSuvh

VBS

When VCC supply voltage keeps lower UV trip voltage (VCCuvt = VCCuvr – VCCuvh) for VCC supply UV filter time, output signal becomes

“L”. And then, when VCC supply voltage is higher than UV reset voltage, input signal (LIN) is “L”; output signal HO becomes “H”.

HIN

LIN(L)

VCCuvt

VCCuvr

tVCCuv

VCCuvh

VCC

VBS(H)

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