16SCT000 Datasheet | SimpleChips

Description The 16SCT000 is an IGBT/MOSFET gate driver (15V nominal Vg) chip to control the conduction state of a high-side switch from the secondary of a small highvoltage isolation transformer. The 16SCT000 will drive the gate of the HV switch above the emitter/source while the secondary winding of the transformer drives the plementary input signals. Upon cessation of the input drive signals, the 16SCT000 quickly clamps the gate to the emitter/souce terminal to ensure fast turns off. Block diagram Concept of operation In normal operation an square wave alternating signal is applied between AC1 and AC2. This signal is rectified by the Full Bridge and the resulting voltage is stored on the integrated capacitor. The rectified DC voltage is then applied to the 15V Regulator and fed to the Gate via the Output Drive circuit. This voltage saturates on the IGBT/MOSFET into a low resistance conduction state. After the AC drive signal is removed, the voltage stored on the integrated capacitor falls. When it falls below the voltage on the Gate, the Output Clamp shunts the Gate and various internal nodes, rapidly turning off the IGBT/MOSFET. The Clamp Circuit has a time constant of several tens of microseconds, ensuring that the Gate and internal nodes are clamped solidly for that duration. The Output Clamp circuit also acts to prevent false triggering when voltages change rapidly. Simple Chips Technology Inc. .simplechips. Copyright © 2017, Simple Chips Technology Inc. 1/8 16SCT000 TRANSFORMER-COUPLED MOSFET / IGBT GATE DRIVER - PRELIMINARY SPECIFICATION - REVISION MAY 29, 2017 Absolute maximum ratings Input Voltage (AC1 - AC2) - - - - - - - - - - . +/-30 V Operating temperature - - - - - - - - - - 0 C to 80 C Storage temperature- - - - - - - . . . ....