Author: George Danz HVIC high voltage integrated circuit designed

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Author: George Danz HVIC high voltage integrated circuit designed

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HVIC/IGBT Half-Bridge Converter Evaluation Circuit
Author: George Danz
HVIC high voltage integrated circuit designed drive n-channel IGBTs MOSFETs half-bridge configuration 500VDC. Power supply motor control inverters configured voltages 230VAC using HVIC, IGBTs other components. precautions should taken using circuit. Lead lengths between external power circuit (including gate pilot leads), bypass capacitor (CDD), bootstrap diode (DF) capacitor (CF) HVIC should minimized. basic components required evaluate features SP601 shown simplified schematic. recommended load largely resistive that largest current component will flow through IGBTs, IGT1 IGT2. flyback diodes, rated will carry much smaller flyback current component. small amount load inductance will cause switching waveforms simulate conditions which would normally observed with motor transformer loads, while limiting current carried lower rated flyback diodes this circuit. values RPUa, RPUb, etc., have been chosen result overcurrent trip approximately 25Apk. this level current, heat sinking IGTs flyback diodes required. series resistance upper lower pilot resistor dividers would approximately divider ratio should cause 0.1V desired trip current. When first energizing your evaluation circuit, begin with reduced voltage about 20VDC 30VDC verify proper circuit operation before proceeding higher voltages. More specific information found File Number 2428 File Number 2429 Half-Bridge 500VDC Driver data sheets Application Note, AN-8829.1.
Simplified Schematic
25VDC VLINK 500VDC IGT1 PULSE +15V UP/DOWN VBIAS PHASE VOUT TRIPU FAULT FAULT +15V ENABLE TRIPL RPLb VLINK IGT2 RPLa RPUb VLINK 0.22 RPBa
HVIC
10µF
HVIC Intersil Part SP601 (Formerly GS601) IGT1, Intersil Part HGTA24N60D1C
Intersil Part RUR860 Intersil Part A114M
RPUa, RPLa 910, 1.8W RPUb, RPLb 1.8W
0.1µF, 600VDC
Copyright
Intersil Corporation 1999
Application Note 9105
Intersil semiconductor products manufactured, assembled tested under ISO9000 quality systems certification.
Intersil semiconductor products sold description only. Intersil Corporation reserves right make changes circuit design and/or specifications time without notice. Accordingly, reader cautioned verify that data sheets current before placing orders. Information furnished Intersil believed accurate reliable. However, responsibility assumed Intersil subsidiaries use; infringements patents other rights third parties which result from use. license granted implication otherwise under patent patent rights Intersil subsidiaries.
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Author: George Danz HVIC high voltage integrated circuit designed

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