The TPS5100 is a triple PWM control circuit, primarily designed to compose the power supply for LCD display. Each PWM channel has its own error amplifier, PWM comparator, dead-time control, and output driver. The trimmed voltage reference, oscillator, undervoltage lockout, and short circuit protection are common for all channels. This device includes two boost exclusive circuits (ch1,3) and a buck-boost exclusive circuit (ch2). The operating frequency is set with an external resistor and capacitor, and dead time is continuously adjustable from 0% to 100% duty cycle with a resistive divider network. Soft start function can be implemented by adding a capacitor to the dead time divider network. Two dead time control inputs are assigned for ch1,3 pair and ch2 individually, and each dead time control input can be used to control on/off operation. TPS5100 can operate from a 2.5V supply voltage, and ch1,3 pair and ch2 operate with reverse phase switching.
The TPS5100 is a triple‑channel PWM control circuit designed for LCD display power supplies. Each channel includes its own error amplifier, comparator, dead‑time control, and output driver, while the reference voltage, oscillator, undervoltage lockout and short‑circuit protection are shared across all channels. The device operates from 2.5 V to 7 V and is qualified for temperatures from –20 °C to 85 °C.
The datasheet provides electrical characteristics such as a typical reference voltage of 1.250 V, input and output regulation of 5 mV, and a typical oscillator frequency of 500 kHz. The part is offered in a 16‑pin TSSOP (PW) package and includes detailed tables for function control, protection thresholds, and typical performance curves.
| Oscillator frequency (fosc) typical | 500 kHz |
|---|---|
| Operating temperature range | -20 °C to 85 °C |
| Package type | 16‑pin TSSOP (PW) |
It is qualified for operation from –20 °C to 85 °C.
The device is offered in a 16‑pin TSSOP (PW) package.