Brushless DC Pre-Drivers


PT5616

The devices are full bridge drivers to control power devices like MOS-transistors or IGBTs in 3-phase systems with a maximum blocking voltage of +600 V.
The six independent drivers are controlled at the low-side using CMOS and LSTTL compatible signals, down to 3.3V logic. The device includes an under -voltage detection unit with hysteresis characteristic and over -current detection. The over -current level is adjusted by choosing the resistor value and the threshold level at pin ITRIP. Both error conditions (under-voltage and over-current) lead to a definite shut down of all six switches. An error signal is provided at the FAULT open drain output pin. The blocking time after over -current can be adjusted with an RC-network at pin RCIN. Therefore, the resistor RRCIN is optional. The typical output current can be given with 200mA for pull-up and 400mA for pull down. Because of system safety reasons a 0.29us dead time has been realized. The function of inputs EN and ITRIP can optionally be extended with over-temperature detection, using an external NTC resistor, diodes and resistor network.

FEATURES


● Drives up to six IGBT/MOSFET power devices

● All high side channels fully operate up to +600V

● Gate drive supplies up to 18 V per channel

● Under-voltage lockout for all channels

● Over-current protection

● Flexible over-temperature shutdown input

● Advanced input filter

● Built-in dead-time protection

● Shoot-through (cross-conduction) protection

● Independent Enable/disable input and fault reporting

● Shutdown all switches during error conditions

● Adjustable fault clear timing

● Separate logic and power grounds

● 3.3 V/5V input logic compatible

● Designed for use with bootstrap power supplies

● Matched propagation delays for all channels

● Matched dead time

● -40°C to 125°C operating range  

● Lead-free

● Package Type - SOP 28



APPLICATIONS


● Appliance motor drives—air conditioners, washing machines, refrigerator, dish washer, Fans

● Servo drives

● Industrial inverters. General purpose three phase inverters

資源下載

Documentation

TitleFileVersionDate
DatasheetPT5616.pdfV 1.02014/2/1

Tools

Application Note