Analog Devices Inc. LT8740 Programmable Device Power Supply (DPS)

Analog Devices LT8740 Programmable Device Power Supply (DPS) offers high efficiency, integration, and performance. The DPS incorporates two switching power supplies delivering up to ±2A of current each at output voltages spanning 30V. The current sensing resistors are integrated, supporting accurate output current measurement in ranges traversing ±5uA up to ±2A. A linear drive stage is also included, enabling a non-switching ripple output drive of up to ±25mA. Output currents over ±2A can be attained by paralleling or ganging multiple DPS channels and/or devices.

Additionally, the ADI LT8740 features the needed ADCs and DACs to set the programmable output regulated under digital PID control and clamp the output current and voltage. The internal ADCs can measure the output voltage and current digitally. Open-drain alarm outputs for overcurrent, overtemperature, or other programmable fault events are provided. The DPS operations are controlled via a simple serial interface running at clock speeds up to 40MHz.

Features

Programmable FV, FI, MI, MV, FNMV functions
Integrated current-sense resistors with measurement ranges of ±5µA up to ±2A
Efficient switching supply driver
- Integrated power switches
- Silent Switcher^® architecture
30V FV span with up to ±2A drive