LTC1514IS8-5#TRPBF

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LTC1514IS8-5# TRPBF is a high performance, PolyPhase synchronous step-down DC to DC switching regulator. It is able to reduce the complexity and power losses associated with multiple buck regulators and DC-DC Converters. The LTC1514IS8-5#TRPBF is compatible with standard power supply topologies and can be used in a variety of applications where voltage regulators and DC to DC converters are required.

Application Field

The LTC1514IS8-5#TRPBF is suited to several kinds of applications such as processors, server power supplies, ASICs, FPGAs, DSPs, and GPUs. It has a highest efficiency of up to 95%. It is able to support up to five phases and features a wide input voltage range of 4.75V - 16V for a single channel.

Moreover, it offers superior ability to regulate and synchronize multiple output channels in line with the processor load requirements for improved power balance and less total system heat dissipation. In addition, it offers support to key synchronous switching components such as MOSFETs, drivers, and gate turn-off drivers.

Working Principle

The LTC1514IS8-5#TRPBF operates in a synchronous buck configuration with one or more phases. It employs a switching cycle-by-cycle current-mode control scheme, which provides excellent dynamic response and line-load transient response performance. The switching frequency is adjustable up to 1MHz, and the output voltage can be set with a resistor divider.

The output voltage is regulated by a digital error amplifier, which is equipped with a VLIM pin. To improve load regulation, the LTC1514IS8-5#TRPBF utilizes an analog compensation circuit. The output voltage is set by connecting the VLO channel to the VREF channel to the resistor divider (the VREF channel is a constant voltage reference).

The LTC1514IS8-5#TRPBF employs an internal current-limit circuit that prevents excessive current drain from the output when the load current reaches an internal threshold. In order to minimize possible power losses and dropouts, the internal clock divider can be used to reduce the switching frequency of the regulator.

Conclusion

LTC1514IS8-5#TRPBF is a high performance PolyPhase synchronous step-down DC to DC switching regulator that is suitable for a variety of applications. It is able to reduce the complexity and power losses associated with multiple buck regulators and DC-DC converters. It operates in a synchronous buck configuration with one or more phases and employs a switching cycle-by-cycle current-mode control scheme. Moreover, it offers superior ability to regulate and synchronize multiple output channels in line with the processor load requirements for improved power balance and less total system heat dissipation.

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