TPS65552A

Not Recommended for New designs www.ti.com RGT DGQ TPS65552A SLVS567 – JULY 2005 INTEGRATED PHOTO FLASH CHARGER AND IGBT DRIVER FEATURES Highly Integrated Solution to Reduce Components Integrated 50-V Power Switch, R(ON) = 200 mΩ Typical Integrated IGBT Driver High Efficiency Programmable Peak Current, 0.95 A ~ 1.8 A Input Voltage of 1.8 V to 12 V Optimized Control Loop for Fast Charge Time Sensing All Trigger From Primary Side 10-Pin MSOP/16-Pin QFN Package Protection – MAX On Time – Over VDS Shutdown – Thermal Monitor APPLICATIONS Digital Still Cameras (DSC) Optical Film Cameras Mobile Phones With Camera PDAs With Camera DESCRIPTION This device offers a complete solution for charging a photo flash capacitor from battery input, and subsequently discharging the capacitor to the xenon tube. The device has an integrated power switch, IGBT driver, and control logic blocks for charge applications. Compared with discrete solutions, the device significantly reduces the component count, shrinks the solution size, and eases design complexity. Additional advantages are fast charging time and high efficiency due to the optimized PWM control algorithm. Other provisions of the device includes four options for determining a different target voltage, programmable peak current, thermal disable monitor, input signal for charge enable, flash enable, and an output signal for charge completion status. VVF Controller or CHG D/A Vonv. or Analog Circuit I_PE...