Analog Devices Inc. ADP2380-EVALZ

Overview

ADP2380-EVALZ from Analog Devices is an evaluation board designed to characterize the ADP2380 20 V, 4 A synchronous step-down regulator with integrated 44 mΩ high-side MOSFET, ±1% output voltage accuracy, and programmable 250 kHz–1.4 MHz switching frequency. It supports precharged output startup, external synchronization with 180° phase shift, and operates across −40°C to +85°C ambient.

For engineers reviewing the ADP2380-EVALZ datasheet, ADP2380-EVALZ pinout, ADP2380-EVALZ application, or ADP2380-EVALZ equivalent, this board enables rapid validation of load/line regulation, efficiency, transient response, soft start timing, UVLO threshold adjustment, and multiphase stacking capability using real-world test points and configurable passive components.

Technical Context

The ADP2380-EVALZ implements a complete 3.3 V, 4 A buck converter reference design using the ADP2380 IC in a 16-lead TSSOP_EP package. It features dedicated sense terminals (VIN_SENSE, VOUT_SENSE, GND_SENSE), EN/SS jumper control (J12), SYNC input (J9), and power-good monitoring (J3).

Board-level configuration includes resistor-programmable switching frequency (R7), adjustable output voltage via R9/R11 divider, external UVLO tuning (R4/R6), and soft start time control (C9). All critical compensation (R8/C10/C11) and power stage components (L1, C2–C6, Q1) are optimized for stable operation at 500 kHz and 4 A continuous load.

Key Specifications

Availability

ADP2380-EVALZ is available at Aetrix Electronics and suitable for power supply validation, DC-DC converter qualification, industrial embedded power design, and automotive subsystem prototyping requiring stable component supply and traceable evaluation hardware.

Supply support for ADP2380-EVALZ includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Analog Devices, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Norwood, MA.

The ADP2380-EVALZ belongs to Analog Devices' Power by Linear™ evaluation platform family, engineered to accelerate development of compact, high-efficiency, wide-input-voltage DC-DC regulators for space-constrained and thermally demanding applications.

FAQ

What is the primary function of the ADP2380-EVALZ?

The ADP2380-EVALZ is a fully assembled and tested evaluation board that enables engineers to validate the electrical performance, thermal behavior, and system integration of the ADP2380 20 V, 4 A synchronous step-down regulator. It provides direct access to all critical nodes-including SW, VIN_SENSE, VOUT_SENSE, SYNC, and EN/SS-for accurate measurement and configuration of the ADP2380 under real operating conditions.

Can the ADP2380-EVALZ be used to evaluate the ADP2381 as well?

No - while the ADP2380-EVALZ shares identical board layout and connector footprint with the ADP2381-EVALZ, its component bill of materials is specifically optimized for the ADP2380: it uses a 4.7 µH inductor (L1), 47 µF output capacitor (C3), and 73.2 kΩ compensation resistor (R8). Using it with the ADP2381 requires component replacement per UG-504 Section "Modifying the Board" to ensure stability at 6 A.

How do I change the output voltage on the ADP2380-EVALZ?

To change the output voltage on the ADP2380-EVALZ, replace resistors R9 and R11 with values from Table 1 in UG-504 - for example, 1.8 V requires R9 = 20 kΩ and R11 = 10 kΩ. The bottom resistor R11 must remain ≤30 kΩ to limit FB pin bias current error to <0.5%. After changing R9/R11, recalculate L1, C2–C4, and R8/C10/C11 per the ADP2380 datasheet to maintain loop stability.

Does the ADP2380-EVALZ support external clock synchronization?

Yes - the ADP2380-EVALZ supports external synchronization via J9 (SYNC), accepting logic-level clock signals from 250 kHz to 1.4 MHz with 1.3 V–5 V high and <0.4 V low. When synchronized, the ADP2380's switching waveform leads the external clock by 180°, enabling two-phase interleaved operation when paired with another synchronized ADP2380-EVALZ or ADP2381-EVALZ board.

What safety and handling precautions apply to the ADP2380-EVALZ?

The ADP2380-EVALZ is an ESD-sensitive device. Users must observe strict electrostatic discharge precautions - including grounded workstations, wrist straps, and antistatic packaging - during handling and probing. Per Analog Devices' UG-504 legal terms, the board is licensed solely for evaluation purposes; disassembly, reverse engineering, or use outside defined scope voids support and violates the agreement.