High Efficiency ±2.25A Programmable Device Power Supply with 16-Bit Settings

The LT8740-225 is a two-channel programmable device power supply (DPS) with very high efficiency, integration, and performance. The part consists of two switching power supplies providing up to ±2.25A of current each at output voltages spanning 30V. Current sensing resistors are integrated, supporting accurate output current measurement in ranges spanning ±5μA up to ±2.25A. A linear drive stage is also included, allowing no-switching ripple output drive of up to ±25mA. Output currents in excess of ±2.25A can be achieved by paralleling or ganging multiple DPS channels and/or devices.

The LT8740-225 also includes the required ADCs and DACs to set the programmable output, regulated under digital PID control, and clamp the output current and voltage. Output voltage and current can be measured digitally using the internal ADCs.

Open-drain alarm outputs are provided for overcurrent, overtemperature, or other programmable fault events. The DPS functions are controlled through a simple serial interface compatible with SPI running at clock speeds of up to 40 MHz.

APPLICATIONS

* Automatic Test Equipment (ATE)

* Device Power Supply

Complete documentation is available upon completion of a Non-Disclosure Agreement (NDA). To request an NDA, click here.

* Programmable FV, FI, MI, MV, FNMV Functions

* Integrated Current-Sense Resistors with Measurement Ranges of ±5μA up to ±2.25A

* Efficient Switching Supply Driver

* Integrated Power Switches

* Silent Switcher® Architecture

* 30V FV Span with up to ±2.25A Drive