Analog Devices ADP2389 | Demoboard UG-863

Description

The ADP2389/ADP2390 evaluation board is a complete, 12 A, 18 V, step-down regulator solution that allows users to evaluate the performance of the ADP2389/ADP2390 with a near ideal printed circuit board (PCB) layout.The programmable current-limit function allows the inductor to be optimized by output current. The peak current-limit threshold is preset to 16.8 A to ensure the 12 A output current capability.The switching frequency can be programmed between 200 kHz and 2.2 MHz, which provides the possibility for a stackable multiphase power solution.An enhanced transient response feature improves the load transient performance, which reduces the output capacitance.The output of the ADP2389/ADP2390 evaluation board is preset to 1.8 V and the switching frequency is set to 500 kHz. Different output voltage settings can be achieved by changing appropriate passive components. The ambient temperature operating range is −40°C to +85°C.Full details on the ADP2389/ADP2390 regulators are provided in the ADP2389/ADP2390 data sheet, available from Analog Devices, Inc., which should be consulted in conjunction with this user guide.

Features

Input voltage: 4.5 V to 18 V Continuous output current: 12 A Integrated MOSFET: 17 mΩ/4.5 mΩ Reference voltage: 0.6 V ±0.5% Programmable switching frequency: 200 kHz to 2.2 MHz Enhanced transient response Programmable current-limit with ±10% accuracy Precision enable and power good External compensation and soft start PFM mode (ADP2390 only) Start up into a precharged output Supported by ADIsimPowerTM design tool

More information

• Datasheet
• IC product information