The HIP4081A is a high frequency, medium voltage FullBridge N-Channel FET driver IC, available in 20 lead plasticSOIC and DIP packages. The HIP4081A can drive everypossible switch combination except those which wouldcause a shoot-through condition. The HIP4081A can switchat frequencies up to 1MHz and is well suited to driving VoiceCoil Motors, high-frequency switching power amplifiers, andpower supplies. For example, the HIP4081A can drive medium voltage brushmotors, and two HIP4081As can be used to drive highperformance stepper motors, since the short minimum“on-time” can provide fine micro-stepping capability. Short propagation delays of approximately 55ns maximizescontrol loop crossover frequencies and dead-times whichcan be adjusted to near zero to minimize distortion, resultingin rapid, precise control of the driven load. A similar part, the HIP4080A, includes an on-chip inputcomparator to create a PWM signal from an external trianglewave and to facilitate “hysteresis mode” switching.
Independently Drives 4 N-Channel FET in Half Bridge or Full Bridge Configurations
Bootstrap Supply Max Voltage to 95VDC
Drives 1000pF Load at 1MHz in Free Air at 50°C with Rise and Fall Times of Typically 10ns
User-Programmable Dead Time
On-Chip Charge-Pump and Bootstrap Upper Bias Supplies
DIS (Disable) Overrides Input Control
Input Logic Thresholds Compatible with 5V to 15V Logic Levels