AN9006 is an IGBT application note that introduces the application of IGBT in camera strobe control system
The document provides a summary of the Camera Strobe System, comparing SCR and IGBT control methods. It details the system's block diagram and circuit configuration, highlighting the advantages of IGBTs such as fast response time and high battery efficiency. The note explains the control power block, which uses a boost-up circuit to drive the IGBT gate from a 3V or 6V battery source.
| IGBT Gate Drive Voltage | Up to 150A (@ logic level) |
|---|---|
| Boost-up Circuit Frequency | 100-150 Khz |
| DC/DC Converter Frequency | 100 Khz |
| KA555 Reset Voltage Range | 0.4 to 1.0 V |
| KA555 Source/Sink Capability | 200 mA |
| Logic Level IGBT Minimum Output Current | 100 mA |
| Xenon-lamp Luminescence Duration (Min) | 11ps |
| Xenon-lamp Luminescence Duration (Max) | 22ms |
The switching frequency is 50 Khz.
The component KA7745 is used for voltage detection.
The duration T is calculated as 1.1 * Rt * Ct.