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Download Test Procedure for the CS5171BSTGEVB Evaluation Board
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Test Procedure for the CS5171BSTGEVB Evaluation Board 1.0 Equipment DC power supply (1.0 A, 0 – 5.0 V) Oscilloscope (10 MHz, 0 – 5.0 V) DC voltmeter (0 – 10 V) DC ammeter (0 – 2.0 A) Electronic load (capable of sinking 0.5 A @ 5.0 V) 2.0 Procedure 1. Connect electronic load to VOUT (J4) and GND (J5). Connect voltmeter to the same terminals. 2. Connect DC power supply to VIN (J2) and GND (J3). Insert DC ammeter in series with power supply. Set power supply current limit to 1.0 A and voltage to 3.3 V. 3. Turn on power supply. Check VOUT = 5.0 V ±5.0%. 4. Set electronic load to constant-current mode, 0.4 A. 5. Turn on load. Check IIN < 1.0 A. Check VOUT = 5.0 ±5.0%. 6. Check switching frequency (IC pin 8) ~260 KHz. 7. Turn off load. Turn off power supply. 3. Notes 1. Do not short the output terminals. The IC cannot protect against a short in a boost regulator. 2. The cathode of D1 is a convenient location to probe the switching frequency. Probe can be grounded to J3 or J5. 8/9/2012 www.BDTIC.com/ON/ -1- www.onsemi.com