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NCP1421EVB

ONNCP1421EVB

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NCP1421 - 1 Non-Isolated Output DC/DC, Step Up Evaluation Board
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Overview

The NCP1421EVB is an evaluation board designed to demonstrate the performance of the NCP1421 monolithic micropower step-up DC/DC converter. It is optimized for battery-powered applications, capable of delivering up to 600mA and starting up at voltages as low as 1.0V. The board features a high switching frequency of 1.2MHz, allowing for the use of small surface-mount inductors and capacitors.

Why Choose This Part

This board showcases the True-Cutoff function which eliminates the leakage path from input to output during shutdown mode. It also utilizes an Anti-Ringing Ring-Killer to reduce EMI during Discontinuous Conduction Mode (DCM) and includes an integrated low-battery detector for simplified system monitoring.

Applications

Single-Cell Battery Systems
Boosting single-cell Alkaline, NiMH, or Li-Ion batteries to stable 3.3V or 5V rails for logic and sensors.
Portable Handheld Devices
Efficient power management for instruments requiring a compact footprint and high efficiency at light loads.
Low-Voltage Start-up Power
Systems that must initialize from deeply discharged batteries, utilizing the 1.0V guaranteed no-load start-up capability.

Key Specifications

Contents Board(s)
Main Purpose DC/DC, Step Up
Voltage - Input 3V
Current - Output 600mA
Outputs and Type 1 Non-Isolated Output
Voltage - Output 3.3V or 5V
Regulator Topology Boost
Utilized IC / Part NCP1421
Frequency - Switching 1.2MHz

Getting Started

To begin evaluation, apply a 3V input source to the designated terminals and monitor the 3.3V or 5V output. Engineers can use the on-board jumpers to toggle the shutdown pin and verify the low-battery detector threshold. The Micro8 package footprint allows for testing thermal performance under the maximum 600mA load conditions.

Also Consider

TPS61221 TITexas Instruments - Offers an ultra-low quiescent current of 5.5uA, which is ideal for always-on battery applications.