LTC3887IUJ-1#TRPBF

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The LTC3887IUJ-1#TRPBF is an advanced, highly programmable, 4-phase, synchronous step-down switching controller specifically designed for demanding intermediate bus and GPU core power supplies. It can easily be configured for operation in two modes – voltage mode control with either external current-sensing or digitally closed-loop control, and current mode control. This makes the LTC3887IUJ-1#TRPBF a great choice for applications such as high performance computing, high performance GPUs, and high performance FPGAs.

The LTC3887IUJ-1#TRPBF application field includes telecom, networking, datacom, server and storage, industrial, FPGA, and automotive.

The LTC3887IUJ-1#TRPBF working principle is based on the use of a sequence of control signals that command when currents should be enabled or disabled in the output stage of a switching regulator. This controller supports input voltage range of 6V to 28V, output voltage range of 0.6V to 2.5V, and output current range of up to 40A. It also provides reliable, accurate power conversion over high line, load, and temperature conditions. It offers integrated safety features, which include over-temperature protection, over-voltage protection, under-voltage protection, and peak current limit.

The LTC3887IUJ-1#TRPBF operates in voltage or current mode control. When in voltage mode, the output of the device is regulated to a predetermined voltage, and when in current mode, the output current is regulated to a predetermined current value, both of which are set by external resistors. Additionally, the device is protected from current fault conditions such as output short circuits, with an adjustable digital peak current limit and integrated analog peak current sense limit.

The LTC3887IUJ-1#TRPBF helps reduce board space and component count by integrating up to four phase-locked loops and four synchronous MOSFET drivers into a single, 4mm × 4mm QFN package. The integrated drivers allow for fast loop transition times, reducing output voltage ripple, and enabling a high power density design.

The LTC3887IUJ-1#TRPBF features Digital-to-Analog Converter (DAC) based margining control, which allows an application to easily program a target device’s output voltage. This ensures compatibility with legacy or legacy-equivalent components, as well as supports fast, accurate voltage margining needed for testing or debug.

The LTC3887IUJ-1#TRPBF provides a complete power solution with configurable voltage margining, synchronous rectification, and switch node monitoring. Its 4-phase design allows it to operate at higher current levels while maintaining excellent thermal performance. This makes it an ideal choice for demanding intermediate bus and GPU core power supplies.

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