Brushless DC Pre-Drivers


PT5608/PT5608A

The PT5608/PT5608A is a high-speed high voltage (600V) driver to control power devices like MOS transistors or IGBTs in half bridge systems with dependent high and low side referenced output channels. The logic input is compatible with standard CMOS or LSTTL output, down to 3.3V logic. The device includes an under-voltage detection unit with hysteresis characteristic and prevents power devices against large amount of conduction loss, when voltage margin of gate is not high enough. The output drivers feature a high pulse current buffer stage designed for minimum driver cross-conduction. The floating channel can be used to drive an N-channel power MOSFET or IGBT, in the high side configuration which operates up to 600 volts.

FEATURES


● Drives two IGBT/MOSFET power devices

● High side channel fully operates up to +600V

● Gate drive supplies from 10V to 20V per channel

● Under-voltage lockout

● Built-in dead-time protection: 0.5us

● IO+/-: 270/600mA, large sourcing current to bypass miller effect

● Shoot-through (cross-conduction) protection

● 3.3V/5V/15V input logic compatible

● Matched propagation delays for all channels

● Matched dead time

● High side output in phase with HIN input

● Low side output out of phase with LIN (PT5608)

● Low side output in phase with LIN (PT5608A)

● Tolerant to negative transient voltage, immunity of dv/dt up to 50V/ns

● Low di/dt gate drive for better noised immunity

● -40°C to 125°C operating range

● SOP8L package




APPLICATIONS


● PMSM/BLDC motor driver

● General purpose inverters

● Electric bike, electric tools

● Lighting, switching power supply

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