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MSK4454G Datasheet(PDF) 4 Page - M.S. Kennedy Corporation |
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MSK4454G Datasheet(HTML) 4 Page - M.S. Kennedy Corporation |
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4 / 6 page  4 Rev. B 11/04 APPLICATION NOTES MSK 4454 PIN DESCRIPTIONS +VCC - Is the low voltage supply for all the internal logic and drivers. A 0.1 µF ceramic capacitor in paral- lel with a 10µF tantalum capacitor is the recommended bypassing from the +VCC pin to the COM pin. H INA, H INB, H INC - Are high active logic inputs for signalling the corresponding phase high-side switch to turn on. The logic inputs are compatible with standard CMOS or LSTTL outputs. These logic inputs are inter- nally zener clamped at 5.2 volts. L INA, L INB, L INC - Are low active logic inputs for signalling the corresponding phase low-side switch to turn on. The logic inputs are compatible with standard CMOS or LSTTL outputs. These logic numbers are internally zener clamped at 5.2 volts. AØ, BØ, CØ - Are the pins connecting the 3 phase bridge switch options. AV-, BV-, CV- - Are the connections from the bottoms of the three half bridges. These pins get connected to the COM pin. If current sensing is desired they may be connected to the COM pin through a low value sense resistor. +VB - Is the connection used to provide power to the floating high-side bootstrap supplies in the gate drive circuitry. V+ - Is the high voltage positive rail connection to the tops of the three half bridges. Proper power supply bypassing must be connected from this pin to the COM pin for good filtering. This bypassing must be done as close to the hybrid as possible. COM - Is the connection that all hybrid power supply connections are returned to and bypassed to. |
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