It is recommended to connect to the VEE2 pin. During normal use, connect to the OUT pin. The Clamp function triggers clamping by adjusting the voltage of the clamp pin itself. When the clamp voltage is below 2V, the Vclamp is pulled down to VEE2.
It is recommended to add a resistor and a capacitor (2.2nF is recommended) to maintain the stability of the DT voltage, so as to ensure that the DT time from channel A to channel B and from channel B to channel A is equal.
It is recommended to short connect the VSS pin to COM, with a pressure difference of no more than 5V.
It is recommended to connect the VLED pin to the VEE (not VE).
Isolation drive is a drive product that uses isolation technology to electrically isolate the control signal on the low voltage side and the drive signal on the high voltage side. Shuming's isolation drive products adopt capacitive isolation technology.
In a half bridge circuit, the driving voltage of the upper transistor is generally achieved through a bootstrap circuit. When the lower tube is turned on, the power supply charges the bootstrap capacitor through the path of bootstrap diode, bootstrap capacitor, and lower tube. When the upper tube is turned on, the voltage on the bootstrap capacitor provides voltage to the driver of the upper tube. In a half bridge circuit powered by a bootstrap circuit, the lower transistor must have a certain opening time to ensure that the voltage on the bootstrap capacitor is sufficient to open the upper transistor.
The driver isolation module is mainly used to isolate the signal from the power circuit to prevent signal crosstalk, and can also provide protection against short circuits, overvoltage, undervoltage, overcurrent, etc., to prevent damage to the entire circuit when a problem occurs at a certain location
