Test Procedure for the NCP5212AGEVB Evaluation Board CRO PSU1 20V/2A V Vo e-Load 0~15A PSU2 5V/0.1A Equipment Set Up Diagram 4/24/2010 Page 1 of 5 www.onsemi.com Demonstration Board Jumper Location Map JP3: EN Default = open JP2: Sync Default = open JP1: Mode Selection OCP only (Default) OCP + AVP 4/24/2010 Page 2 of 5 www.onsemi.com Equipment List Item 1 2 3 4 Qty 1 2 1 1 Description Electronic Load. KIKUSUI-PLZ153W or equivalent. Power Supply. AGILENT-E3632A or equivalent. (Note: build-in ammeter) Digital Multimeter. AGILENT-34401A or equivalent. Tekronix TDS460A CRO or equivalent. Demonstration Board Jumper Setting Jumper Status JP1 - JP2 - JP3 - Description Sync (not used for demo board test) Default = open Mode selection Default = see “Demo board jumper location map” diagram Device enable pin. Open = device is operating Short = device shut down Default = open Demonstration Board Terminal Pins List Terminal VIN PGND +5V AGND 4/24/2010 Description Device input voltage (5-27V) Device power ground Device analog circuit bias (4.5 ~ 5.5V) Device analog ground Page 3 of 5 www.onsemi.com Test Procedures 1. 2. 3. 4. All Jumpers are set as “Default” Set up the demonstration board shown at “Equipment Set Up Diagram” Set PSU1=20V, PSU2=5V. For safety set current limit of PSU1=2A, PSU2=0.1A Measuring results are tabulated in the following table Note: PSU = Power Supply Unit e-Load = Electronic Load PSU1 Vo LED e-Load Current Consumption 0 ~0A 1.52-1.54V ON 2 0.15-19A 1.52-1.54V ON 5 0.38-0.47A 1.52-1.54V ON 8 0.62-0.76A 1.52-1.54V ON 8Æ15A VoÆ0V ON Æ OFF Note: The current consumption of PSU2 should be below 20mA for all tests. 4/24/2010 Comment See scope waveform 1 See scope waveform 2 See scope waveform 3 See scope waveform 3 Over current protection test Page 4 of 5 www.onsemi.com Scope Waveform 1 – e-Load=0A Scope Waveform 2 – e-Load=2A Scope Waveform 3 – e-Load=5A, 8A 4/24/2010 Page 5 of 5 www.onsemi.com