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NCP1421EVB:  Up to 600 mA DC-DC Converter Evaluation Board

NCP1421 is a monolithic, micro-power, high-frequency, step-up switching converter IC designed for battery operated hand-held electronic products with up to 600 mA loading. It integrates a synchronous rectifier (Sync-Rect) to improve efficiency and to eliminate the external Schottky Diode. The NCP1421's high switching frequency (up to 1.2 MHz) allows for a low profile, small sized inductor and output capacitor to be used. When the device is disabled, the internal conduction path from the battery to the load is fully blocked, which isolates the load from the battery. This True-Cutoff function reduces the shutdown current to typically only 50nA. A Ring-Killer is also integrated to eliminate high-frequency ringing in discontinuous conduction mode. Finally, a Low-Battery Detector, Logic-Controlled Shutdown, Cycle-by Cycle Current Limiting and Thermal Shutdown provide value-added features for various battery operated applications. With all these functions ON, the quiescent supply current is typically only 8.5 µA. This device is available in the compact and low profile Micro8 package.
Features and Applications

Features

  • High Efficiency:
    -94% for 3.3 V Output at 200 mA from 2.0 V Input
    -84% for 3.3 V Output at 500 mA from 2.5 V Input
  • High Switching Frequency, up to 1.2 MHz (Not Hitting Current Limit)
  • True-Cutoff Function Reduces Device Shutdown Current to typically 50nA
  • Anti-Ringing Ring-Killer for Discontinuous Conduction Mode
Evaluation/Development Tool Information
Product Status Compliance Short Description Parts Used Action
NCP1421EVB Active
Up to 600 mA DC-DC Converter Evaluation Board NCP1421DMR2G
Technical Documents
Type Document Title Document ID/Size Rev
Eval Board: BOM NCP1421EVB BILL OF MATERIALS NCP1421EVB_BOM.REV1.PDF - 70.0 KB  1 
Eval Board: Gerber NCP1421EVB GERBER LAYOUT FILES (ZIP FORMAT) NCP1421EVB_GERBER.REV1.ZIP - 180.0 KB  1 
Eval Board: Schematic NCP1421EVB SCHEMATIC NCP1421EVB_SCHEMATIC.REV1.PDF - 126.0 KB  1 
Eval Board: Test Procedure NCP1421EVB TEST PROCEDURE NCP1421EVB_TEST_PROCEDURE.REV1.PDF - 115.0 KB  1 
Video Up to 600 mA DC-DC Converter Evaluation Board - NCP1421EVB WVD17570/D   
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Up to 600 mA DC-DC Converter Evaluation Board - NCP1421EVB
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