Renesas Electronics HIP4086A 3-Phase MOSFET Drivers
Renesas Electronics HIP4086A 3-Phase MOSFET Drivers are specifically targeted for PWM motor control. Renesas HIP4086A Drivers have a flexible input protocol for driving every possible switch combination. The device offers an override option, allowing shoot-through protection for switched reluctance applications.
The HIP4086A provides a wide range of programmable dead times (0.5µs to 4.5µs), which makes them very suitable for the low frequencies (up to 100kHz) typically used for motor drives. To ensure that the high-side driver boot capacitors are fully charged before turning on, a programmable bootstrap refresh pulse is activated when VDD is first applied. When active, the refresh pulse turns on all three of the low-side bridge FETs while holding off the three high-side bridge FETs to charge the high-side boot capacitors. After the refresh pulse clears, normal operation begins.
The HIP4086A 3-Phase MOSFET Drivers have the built-in charge pumps disabled, allowing a very quiet EMI performance. The HIP4086A features a programmable undervoltage setpoint that varies from 6.6V to 8.5V.
Features
- Independently drives six N-channel MOSFETs in a 3-phase bridge configuration
- Bootstrap supply maximum voltage up to 95VDC with bias supply from 7V to 15V
- 1.25A peak turn-off current
- User-programmable dead time (0.5µs to 4.5µs)
- Bootstrap and optional charge pump maintain the high-side driver bias voltage
- Programmable bootstrap refresh time
- Drives 1000pF load with a typical rise time of 20ns and fall time of 10ns
- Programmable undervoltage set point
Applications
- Brushless motors (BLDC)
- 3-phase AC motors
- Switched reluctance motor drives
- Battery powered vehicles
- Battery powered tools
Block Diagram
