Nexperia USA Inc. NEVB-NPS4069UL

Overview

NEVB-NPS4069UL from Nexperia is a two-layer evaluation board designed specifically for characterizing the NPS4069 load switch IC, supporting input voltages from 2.5 V to 5.5 V and continuous currents up to 1.5 A RMS. It integrates VIN/VOUT sense test points, soft-start control, over-temperature protection, quick output discharge (QOD), and active reverse voltage detection - enabling precise R_ON measurement and dynamic timing analysis in power sequencing validation.

For engineers reviewing the NEVB-NPS4069UL datasheet, NEVB-NPS4069UL pinout, NEVB-NPS4069UL application, or NEVB-NPS4069UL equivalent, this board provides traceable, low-resistance current paths, isolated voltage sensing nodes, and configurable enable control - critical for validating load switch behavior under real-world thermal, transient, and layout-dependent conditions.

Technical Context

This evaluation board implements a dedicated PCB layout with substantial ground plane and optimized copper routing to minimize parasitic resistance and inductance between VIN and VOUT terminals. Sense points (VIN_SENSE, VOUT_SENSE) are routed directly to the NPS4069 package pins, decoupling measurement accuracy from PCB trace IR drops.

The board supports both manual (jumper S1) and external signal-driven enable control, with built-in smart pull-down on the ON pin that disables the load switch when unconnected while eliminating unnecessary leakage during active high-level operation - matching the NPS4069's internal control logic and protection architecture.

Key Specifications

Availability

NEVB-NPS4069UL is available at Aetrix Electronics and suitable for power integrity validation, load switch qualification, and R_ON/timing characterization requiring stable component supply and repeatable test conditions in lab, QA, and pre-production environments.

Supply support for NEVB-NPS4069UL 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 focused on high-performance, reliable standard-logic and power devices, serving automotive, industrial, and consumer markets with scalable manufacturing and rigorous quality systems.

The NEVB-NPS4069UL belongs to Nexperia's load switch evaluation platform family, engineered to accelerate adoption of their NPS-series integrated load switches by providing production-representative thermal, electrical, and layout conditions for design-in verification.

FAQ

What is the purpose of VIN_SENSE and VOUT_SENSE test points?

VIN_SENSE and VOUT_SENSE are Kelvin-sense connections routed directly to the NPS4069 IC's input and output pins - bypassing PCB trace resistance - enabling accurate R_ON calculation using Equation (1): R_ON = (VIN_SENSE − VOUT_SENSE) / I_OUT. They eliminate measurement error caused by voltage drop across board traces during high-current testing.

Can NEVB-NPS4069UL be used with the NPS4001 load switch?

No - NEVB-NPS4069UL is physically and electrically configured for the NPS4069 only. While the user manual groups NEVB-NPS4069 and NEVB-NPS4001 as related boards, they are distinct PCBs with different layouts, current ratings (1.5 A vs. 2 A), and component placements. The NPS4001 requires NEVB-NPS4001.

How does the smart pull-down on the ON pin work?

The board incorporates a 10 kΩ resistor (R1) between the ON pin and GND, but it is decoupled when S1 connects pin 2 to VIN - preventing unwanted current draw during active-high enable. This mirrors the NPS4069's internal enable architecture and ensures correct logic-level interpretation without external biasing components.

Is there a recommended oscilloscope setup for measuring rise/fall time?

Yes - connect the oscilloscope probe tip to VOUT_SENSE and ground clip to TP4/TP6/TP7 (GND test points). Use S1 pin 2 as the trigger source. This configuration captures true device-level switching dynamics, isolating IC behavior from PCB-induced delays or ringing, as confirmed in Section 6.1 and Figure 6 of UM90030.