12/2/2013 Test Procedure for the NCP6361BGEVB Evaluation Board Initial Setup: The initial setup given here is recommended before starting measurements on the evaluation board. Jumper Configuration: initial / default setup LTR1 not connected LTR2 connected − Can be used for visualizing the current in the inductor (ILX) using an oscilloscope current probe LTR3 connected − Connect FB pin to Vout S1: Enable pin; default with jumper connected to VBAT (Logic Level High), device is activated by default S2: ByPass Enable option, default with jumper connected to GND (Logic Level Low), By Pass not activated S3: Frequency Selection pin, default with jumper connected to GND (Logic level Low), FSEL = 0 → Frequency = 6 MHz selected Connect Vin (VBAT) with VBAT tuned at 3.7 V for example Connect VCON with VCON tuned at 0.8 V for example:Vout = 0.8V x 2.5 = 2V Connect load (8 Ω or 10 Ω respectively 250 mA or 200 mA considering Vout = 2 V) or connect a current source tuned with 100 mA (as initial load value) Connect voltage probe or multi−meter on Vout test point Other test points can be eventually checked: VCON (TP9), FB, VBAT, EN, FSEL and BPEN SW test point is available as well Apply VBAT = 3.7 V first then VCON = 0.8 V and finally IOUT (100 mA) if current source connected Check Vout = 2 V VBAT can vary from 2.5 V to 5.5 V according to datasheet VCON can vary from 0.16 V to 1.4 V with a corresponding respective Vout of 0.4 V typical and 3.5 V typical Output current can vary from 0 to 800 mA in PWM mode and up to 1.2 A in By Pass mode Operating Modes: 4 operating modes are available: they can be checked by sweeping VCON according to datasheet specification and below rough guide lines: Sleep Mode with VCON below about 0.125 V PFM Mode with VCON above 0.125 V PWM Mode when Iout above about 200 mA By Pass Mode when Vout close to Vin such as Vin – Vout below about 200 mV or by forcing bypass mode with pin BPEN