产品简介
BL8636 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 three independent drivers are controlled at the low-side using CMOS and LSTTL compatible signals, down to 3.3V logic.
BL8636 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 FAULTB 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.
BL8636 typical output current can be given with 300mA for pull-up and 600mA for pull down. Because of system safety reasons a 290ns 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.
优势特点
Fully operate up to 600V
Gate drive supply range from 10V to 20V
Built-in dead-time protection
Shoot-through protection
Independent Enable/disable input and fault reporting
Shut down all switches during error conditions
Adjustable fault clear timing
3.3 V/5V/15V input logic compatible
Tolerant to negative transient voltage, dV/dt immune
Matched propagation delays for all channels
Matched dead time
-40°C to 125°C operating range
SOP28 Package available