Nexperia USA Inc. NEVB-NPS1000UL

Overview

NEVB-NPS1000UL from Nexperia is a two-layer evaluation board designed specifically for characterizing the NPS1000 ultra-low-voltage load switch IC. It supports input voltage range of 0.5 V to 1 V, delivers up to 600 mA RMS (1.5 A peak) output current, and integrates Kelvin-sense test points (VIN_Sense/TP2, VOUT_Sense/TP8) for precision R_ON measurement. The board enables accurate dynamic testing-including rise/fall time analysis-of soft-start behavior under controlled bias (2.3–5 V) and enable (0.72 V threshold) conditions.

For engineers reviewing the NEVB-NPS1000UL datasheet, NEVB-NPS1000UL pinout, NEVB-NPS1000UL application, or NEVB-NPS1000UL equivalent, this board serves as a validated platform for evaluating low-voltage load switch performance in power rail sequencing, battery-powered SoC subsystems, and precision R_ON/thermal validation workflows where trace resistance must be excluded from measurements.

Technical Context

The NEVB-NPS1000UL implements a dedicated PCB layout with separate Kelvin-sense routing for VIN and VOUT, eliminating PCB trace IR drop from voltage measurements. Its 2-layer construction features a substantial ground plane and optimized copper paths to minimize parasitic impedance between J3 (VIN), U1 (NPS1000), and J4 (VOUT).

All critical control and sensing interfaces-including EN (J2), BIAS (J1/TP3), VIN_Sense (TP2), and VOUT_Sense (TP8)-are accessible via miniature test points and 2.54 mm headers. Decoupling capacitors (22 µF, 2.2 µF, 0.1 µF) are placed adjacent to both input and output pins of the NPS1000 to ensure stable operation during transient load switching.

Key Specifications

Availability

NEVB-NPS1000UL is available at Aetrix Electronics and suitable for ultra-low-voltage power validation, load switch R_ON metrology, and soft-start timing analysis requiring stable component supply and repeatable test conditions.

Supply support for NEVB-NPS1000UL 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

Nexperia is a global semiconductor expert delivering high-performance logic, discrete, and MOSFET solutions with focus on efficiency, reliability, and miniaturization for automotive, industrial, and mobile applications.

The NEVB-NPS1000UL belongs to Nexperia's evaluation board product line, engineered to accelerate design-in and validation of their ultra-low-voltage load switches-specifically targeting applications where sub-1 V rail control and milliohm-level R_ON accuracy are critical.

FAQ

What is the purpose of the Kelvin-sense test points TP2 and TP8?

TP2 (VIN_Sense) and TP8 (VOUT_Sense) provide direct access to the NPS1000 IC's package-level voltage nodes, bypassing PCB trace resistance. This enables accurate R_ON calculation using R_ON = (VIN_Sense − VOUT_Sense) / I_OUT, eliminating measurement error caused by current-path impedance in standard two-wire connections.

Can the NEVB-NPS1000UL operate without an external bias supply?

No. The NPS1000 requires a separate bias voltage (2.3 V to 5 V) applied to the BIAS pin (J1/TP3) to power its internal control circuitry. VIN alone (0.5–1 V) is insufficient for device operation; bias must be enabled before applying VIN and EN to ensure correct startup sequence and protection feature activation.

What is the recommended startup sequence for reliable operation?

The correct sequence is: (1) apply 2.3–5 V to BIAS (J1/TP3), (2) apply 0.5–1 V to VIN (J3), (3) assert EN ≥0.72 V (J2 pin 2), then (4) connect load to J4. Reversing this order may prevent proper enablement or trigger UVLO/bias faults, especially given the NPS1000's bias-dependent internal regulation.

How does the board support dynamic parameter measurement like rise/fall time?

The board exposes EN signal at TP1 for oscilloscope triggering and VOUT_Sense at TP8 for clean output waveform capture. With function generator driving J2 and proper grounding via TP4–TP7, users can directly measure tr/tf per JEDEC standards-using the documented test setup in UM90027 Fig. 6-with no added probe loading or layout-induced distortion.