www.ti.com
RGT
TPS65561
SLVS691 – FEBRUARY 2007
INTEGRATED PHOTO FLASH CHARGER AND IGBT DRIVER
FEATURES
• Highly Inte...
www.ti.com
RGT
TPS65561
SLVS691 – FEBRUARY 2007
INTEGRATED PHOTO FLASH CHARGER AND IGBT DRIVER
FEATURES
Highly Integrated Solution to Reduce Components
Integrated
Voltage Reference Integrated 50-V Power Switch, Integrated IGBT Driver High Efficiency Programmable Peak Current: 1.1 A to 2.2 A Input Battery
Voltage of 1.6 V to 12 V Optimized Control Loop for Fast Charge Time Output
Voltage Feedback From Primary Side 16-Pin QFN Package Protection
– MAX On Time
– MAX Off Time
– Overcurrent Shutdown to Monitor VDS at the SW pin (OVDS)
– Thermal Monitor
APPLICATIONS
Digital Still Cameras Optical Film Cameras
DESCRIPTION
This device offers a complete solution for charging a photo flash capacitor from a battery input, and subsequently discharging the capacitor to a xenon flash tube. The device has an integrated
voltage reference, power switch, IGBT driver, and control logic blocks for capacitor charging applications and driving IGBT applications. Compared with discrete solutions, this device reduces the component count, shrinks the solution size, and eases designs for xenon tube applications. Additional advantages are a fast charging time and high efficiency from an optimized PWM control algorithm.
Other provisions of the device includes sensing the output
voltage from the primary side, programmable peak current, thermal shutdown, an output pin for charge completion, and input pins for charge enable and flash enable.
VI/F Controller
or
D/A Conv or
Analog...