The ISL83204A is a high frequency, medium voltage Full

Bridge N-Channel FET driver IC, available in 20 lead plastic

SOIC and DIP packages. The ISL83204A includes an input

comparator used to facilitate the “hysteresis” and PWM

modes of operation. Its HEN (high enable) lead can force

current to freewheel in the bottom two external power

MOSFETs, maintaining the upper power MOSFETs off.

Since it can switch at frequencies up to 1MHz, the

ISL83204A is well suited for driving Voice Coil Motors,

switching power amplifiers and power supplies.

ISL83204A can also drive medium voltage brush motors,

and two ISL83204As can be used to drive high performance

stepper motors, since the short minimum “on-time” can

provide fine micro-stepping capability.

Short propagation delays of approximately 55ns maximize

control loop crossover frequencies and dead-times which

can be adjusted to near zero to minimize distortion, resulting

in precise control of the driven load.

特性 Features

? Drives N-Channel FET Full Bridge Including High Side

Chop Capability

? Bootstrap Supply Max Voltage to 75VDC

? Drives 1000pF Load at 1MHz in Free Air at +50°C with

Rise and Fall Times of Typically 10ns

? User-Programmable Dead Time

? Charge-Pump and Bootstrap Maintain Upper Bias

Supplies

? DIS (Disable) Pin Pulls Gates Low

? Input Logic Thresholds Compatible with 5V to 15V Logic

Levels

? Very Low Power Consumption

? Undervoltage Protection

? Pb-Free Plus Anneal Available (RoHS Compliant)

Applications

? Medium/Large Voice Coil Motors

? Full Bridge Power Supplies

? Switching Power Amplifiers

? Uninterruptible Power Supplies

? High Performance Motor Controls

? Noise Cancellation Systems

? Battery Powered Vehicles