Analog Devices Inc. ADP5133CB-EVALZ

Overview

ADP5133CB-EVALZ from Analog Devices is an evaluation board designed to characterize the ADP5133 dual step-down micro PMU, supporting independent enable control, mode selection (PWM/PSM), and external resistor-based output voltage configuration for BUCK1 (3.3 V) and BUCK2 (1.8 V) channels. It enables line/load regulation, efficiency, ripple, and ground current measurements using standard lab equipment.

For engineers reviewing the ADP5133CB-EVALZ datasheet, ADP5133CB-EVALZ pinout, ADP5133CB-EVALZ application, or ADP5133CB-EVALZ equivalent, this board provides validated test points, jumper-configurable operation modes, fixed-output voltage presets, and full schematic documentation to accelerate power architecture validation and regulator performance benchmarking.

Technical Context

The ADP5133CB-EVALZ implements a complete hardware platform for the ADP5133 - a dual-channel, high-efficiency buck regulator with integrated MOSFETs, 0.5 V feedback reference, and WLCSP-16 packaging. It supports input voltages from 4.2 V to 5.5 V and delivers up to 1.2 A per channel with factory-set or resistor-programmable outputs.

Key design elements include dedicated EN1/EN2 jumpers for per-channel enable, MODE jumper (P3) to select forced PWM or automatic PWM/PSM operation, VIN_12 link option for shared/dual-input configurations, and accessible test points for VOUT1/VOUT2, SW1/SW2, FB1/FB2, and PGND1/PGND2.

Key Specifications

Availability

ADP5133CB-EVALZ is available at Aetrix Electronics and suitable for power management validation, DC/DC regulator qualification, embedded system bring-up, and analog design verification requiring stable component supply and documented test methodology.

Supply support for ADP5133CB-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, serving industrial, automotive, communications, and healthcare markets.

The ADP5133CB-EVALZ belongs to Analog Devices' Power Management Unit (PMU) evaluation platform family, engineered specifically to simplify characterization of multi-rail, low-voltage, high-efficiency buck regulators in space-constrained applications.

FAQ

What is the primary function of the ADP5133CB-EVALZ?

The ADP5133CB-EVALZ is a fully assembled and tested evaluation board for the ADP5133 dual step-down micro PMU. It enables engineers to measure key performance parameters-including load regulation, line regulation, efficiency, output ripple, and ground current-using only a single voltage supply, voltmeters, current meters, and load resistors. The ADP5133CB-EVALZ does not operate as a standalone power solution but serves exclusively as a characterization tool for the underlying ADP5133 IC.

Can the ADP5133CB-EVALZ be used to evaluate both BUCK1 and BUCK2 simultaneously?

Yes, the ADP5133CB-EVALZ supports concurrent evaluation of both BUCK1 and BUCK2 channels. Each channel has independent enable jumpers (P2 for EN1, P4 for EN2), dedicated feedback resistors (R1/R2 for BUCK1, R3/R4 for BUCK2), and separate output test points (VOUT1, VOUT2). Input sources can be shared (via VIN_12 link) or isolated, allowing flexible dual-rail testing scenarios under real-world load conditions.

How is output voltage configured on the ADP5133CB-EVALZ?

Output voltage on the ADP5133CB-EVALZ is set using external resistor dividers tied to the FB1 and FB2 pins, with VFB = 0.5 V. For BUCK1, R1 = 140 kΩ and R2 = 100 kΩ yield 3.3 V; for BUCK2, R3 = 280 kΩ and R4 = 49.9 kΩ yield 1.8 V. These resistors are pre-installed and soldered. Users may replace them to adjust output voltage, following the formula VOUT = VFB × (1 + RTOP/RBOT).

What operating modes does the ADP5133CB-EVALZ support for the ADP5133?

The ADP5133CB-EVALZ supports two operational modes via the MODE jumper (P3): forced PWM (jumper across Pins 1–2) and automatic PWM/PSM (jumper across Pins 2–3). This allows direct comparison of efficiency curves (as shown in Figure 5 of UG-654) and transient response behavior under light and heavy loads without modifying firmware or external control signals.

Does the ADP5133CB-EVALZ include layout guidance for production designs?

Yes, the ADP5133CB-EVALZ User Guide (UG-654) includes full PCB schematics (Figure 8) and layer-by-layer artwork (Figures 9–12), covering top, second, third, and bottom copper layers. These files serve as a validated reference for thermal management, power plane routing, and high-frequency switching node layout - directly applicable when designing custom boards using the ADP5133 in its 2 mm × 2 mm WLCSP-16 package.