TPS65177ARHAR

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Power management integrated circuits (PMIC) are essential for electronic circuit design as they provide a range of functions that enable power stability, increase efficiency and extend battery life. The TPS65177ARHAR is a PMIC designed specifically to power display panels used in televisions, consumer electronics, screen modules, and Portable Thin-Film-Transistor (TFT) displays. It is a multi-channel regulator intended to power DC-DC buck converters, DC-DC boost converters, and a switch mode power supply (SMPS).

At its core, the TPS65177ARHAR is a highly integrated, high-efficiency device. It features three phases in buck mode power supply, three phases in boost mode power supply, and a single-phase SMPS, all with independent control. Other features include programmable soft-start and power good, low-side FET drive, integrated fractional error amplifier, Dynamic Frequency and Voltage Scaling, and load transient response optimization. All of this allows for an optimized display power solution for highly efficient, space-saving designs.

The TPS65177ARHAR is a 27V synchronous step-down regulator with 400kHz switching frequency. It has an internal synchronous rectifier and can deliver up to 12A load current. The device includes a PFM/PWM adaptive mode that allows it to operate with up to 94% efficiency even at light load conditions. It also features programmable soft-start, voltage margining, and Dynamic Frequency and Voltage Scaling, which helps maintain power supply stability even under dynamic load variations. It is equipped with adjustable output voltage, over-current protection, over-temperature protection, and output short-circuit protection.

The TPS65177ARHAR is housed in a TSSOP-48 7mm x 7mm package, providing a large land grid array (LGA) for easier placement and superior electrical performance. An output capacitor with ESR lower than 1.5Ω is recommended for better stability and optimal overall performance. The TPS65177ARHAR also has an integrated low-side gate driver, enabling a simpler implementation and significantly reduced external components.

Overall, the TPS65177ARHAR is best suited for applications that require high efficiency, simplicity and space optimization. The powerful combination of features, especially the Dynamic Frequency and Voltage Scaling, programmable soft-start and over-current protection, makes it an ideal solution for LCD and OLED display panels. These features make it ideal for powering display panels in consumer electronics, screen modules, and other TFT displays.

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