TPS51217DSCR Integrated Circuits (ICs)

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The TPS51217 is a highly integrated, digital, single-phase, synchronous step-down DC/DC controller optimized for power supplies powered by a single Li-ion or Li-polymer battery. This device incorporates a high-efficiency, low-power standby current linear regulator, as well as synchronous rectification and output voltage tracking features to maximize efficiency and minimize power losses. The integrated 16-bit RISC core and 50-mΩ FET work together to provide up to 95% efficiency and a maximum guaranteed duty cycle of 95%.

Application Field of the TPS51217DSCR

The TPS51217DSCR provides high DC/DC conversion efficiency when used in point-of-load applications and can support wide output voltage ranges. This device offers precise, 0.5% voltage regulation, enabling power supply systems to supply precise voltages to digital core logic and memory applications. This makes the TPS51217DSCR an ideal choice for load-transient intensive applications such as gaming systems, desktop PCs, industrial applications, and other embedded applications.

Working Principle of the TPS51217DSCR

The TPS51217DSCR is a single-phase synchronous step-down DC/DC controller featuring an integrated 50-mΩ MOSFET for high-efficiency DC/DC conversion and output voltage tracking. The device is designed to provide a regulated output voltage with maximum efficiency over a wide input voltage range. The integrated 16-bit RISC core can be programmed to provide up to 95% efficiency and a maximum duty cycle of 95%. The device\'s duty-cycle depends on the input and output voltage, which are monitored by dedicated pins.

The power saving mode helps minimize the quiescent current and standby power consumption. When enabled, the regulator switches off the synchronous FETs, allowing the output voltage to be programmed using an external resistor. This enables the system to achieve low-power operation by reducing the minimum load current.

The TPS51217DSCR is a highly integrated device that combines an integrated linear regulator, full digital control, programmable output voltage and current, low-ripple switching, and high output voltage accuracy. The device is also equipped with other features such as a thermally shutdown function, high temperature protection, and power-on-reset for a simple, reliable solution for power supply system design.

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