ZHCSLC6B May 2020 – January 2022 TPS92200
PRODUCTION DATA
The TPS92200 device is a 1.5-A synchronous buck LED driver with 30-V maximum input voltage. By integrating the high-side and low-side NMOS switches, the TPS92200 device provides high power density with high efficiency in an ultra-small solution size.
The TPS92200 device is fully internally compensated without additional external components, which enables a simple design on a limited board space. The device uses peak current mode control to regulate the LED current with high accuracy. Switching frequency is internally set to 1 MHz, allowing the use of extremely small surface-mount inductors and chip capacitors.
The TPS92200 devices support flexible dimming methods. TPS92200D1 implement both PWM and analog dimming modes. In PWM dimming mode, the LED turns on and off according to PWM duty cycle periodically. The device's analog dimming mode is achieved by changing the internal reference voltage proportional to the voltage level of the analog input in 5% to 100% range. TPS92200D2 implement deeper analog dimming by changing the internal reference voltage proportional to the duty cycle of the PWM signal input in 1% to 100% range.
For safety and protection, the TPS92200 devices implement full protections include LED open, LED+ short-to-GND, LED short, sense resistor open and short, and device thermal protection. Hiccup mode is triggered at current limit or FB pin overvoltage scenario to avoid the device overheats.