HPF-320

The HPF-320 is a compact high-pressure fuel pump driver unit for motorsport applications, designed to operate alongside a powertrain control unit. The unit generates a complex current controlled waveform required to activate the pump's solenoid inlet valve directly from a single TTL trigger pulse. The ON trigger pulse from the powertrain control unit commands the total pulse width, whilst the pull-in time, pull-in current, holding current, pull in hysteresis, and holding hysteresis are defined over CAN.

A single-chip processor is used to set up the waveform and to gather diagnostic information which is transmitted on CAN to the powertrain control unit. An FPGA accepts the external trigger pulses and controls the drive stage based on the waveform configuration from the processor.