HIP4084

Features:

• Independently Drives 8 N-Channel MOSFETs in Either Four Phase Bridge Configuration or Dual H-Bridge Configuration
• 1.25A Peak Turn-Off Current
• Bootstrap Supply Max Voltage to 95VDC
• Bias Supply Operation from 7V to 15V
• User-Programmable Dead Time (0.25µs to 4.5µs)
• Charge-Pump and Bootstrap Maintain Upper Bias Supplies
• Drives 1000pF Load with Typical Rise Time of 20ns and Fall Time of 10ns
• EN (Disable) Overrides Input Control
• Input Logic Thresholds Compatible with 3V to 15V Logic Levels
• Dead Time Disable Capability
• Programmable Undervoltage Set Point


Application

• Brushless Motors
• AC Motor Drives
• Stepper Motors
• Switched Reluctance Motor Drives


Pinout




Specifications

Supply Voltage, V_DD . . . . . . . . . . . . . . .. . . . . . . . . . . . -0.3V to 16V
Logic I/O Voltages . . . . . . . . . . . . . . . . . . . . . . . -0.3V to VDD +0.3V
Voltage on xHS. . . . . . . . . .-6V (Transient) to +85V (-40 to 150)
Voltage on xHB. . . . . . . . . . . . . . . . . . . . .VxHS -0.3V to VxHS +VDD
Voltage on xLO. . . . . . . . . . . . . . . . . . . . . . VSS -0.3V to VDD +0.3V
Voltage on xHO . . . . . . . . . . . . . . . . . . . .VxHS -0.3V to VxHB +0.3V
Phase Slew Rate . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . 20V/ns


Description

The HIP4084 is a Four Phase Bridge N-Channel MOSFET driver IC.

Specifically targeted for PWM and stepper motor control applications, the HIP4084 makes bridge based designs simple and flexible. With operation up to 80V and undervoltage detection, the device is best suited to applications of moderate power levels.

Like the HIP4081, the HIP4084 has a flexible input protocol for driving every possible switch combination. Like the product, the HIP4084 provides a typical drive currents of 0.5A and a programmable dead time from 0.25µs to 4.5µs. Like the HIP4086, the HIP4084 allows override of shootthrough protection for switched reluctance applications. The HIP4084 is suitable for applications requiring DC to 100kHz.
Unlike other HIP4080 family products, the HIP4084 provides, from a single pin, a programmable undervoltage set point and an enable/disable function.