NCP702MX28TCGEVB

Test Procedure for the NCP702MX28TCGEVB Evaluation Board 04-JUN-12 Test Setup 1: Electronic Electronic Power Supply - VIN Load + VIN VOLTMETER2 + VOUT - VOUT V V VOLTMETER1 Figure 1. Test setup for the measurements of basic regulation characteristics Required Equipment: 2 x Voltmeters DC Power Supply – Max. 5.5V Electronic Load 5/14/2012 -1- www.onsemi.com Test Procedure for the Measurement of Line Regulation parameter using Test Setup 1: 1. Connect the test setup as shown on Figure 1, 2. Set the electronic load for the required load current e.g. IOUT = 10mA, 3. Apply the required minimum input voltage e.g. VIN_MIN = VOUT_NOM + 0.3V (1), 4. Note the output voltage reading VOUT1 indicated by VOTLMETER2, 5. Apply the required maximum input voltage e.g. VIN_MAX = VOUT_NOM + 1.3V (1), 6. Note the output voltage reading VOUT2 indicated by VOTLMETER2, 7. Calculate the Line Regulation parameter as: RegLINE = (VOUT2 – VOUT1) / (VIN_MAX – VIN_MIN) [V/V] 8. Turn off the electronic load. Turn off the input power supply, 9. End of the test. Test Procedure for the Measurement of Load Regulation parameter using Test Setup 1: 1. Connect the test setup as shown on Figure 1, 2. Set the electronic load for the required minimum output current e.g. IOUT_MIN = 1mA, 3. Apply the desired input voltage e.g. VIN = VOUT_NOM + 0.3V (1), 4. Note the output voltage reading VOUT1 indicated by VOTLMETER2, 5. Set the electronic load for the required maximum output current e.g. IOUT_MAX = 150mA, 6. Note the output voltage reading VOUT2 indicated by VOTLMETER2, 7. Calculate the Load Regulation parameter as: RegLOAD = (VOUT2 – VOUT1) / (IOUT_MAX – IOUT_MIN) [V/A] 5. Turn off the electronic load. Turn off the input power supply, 6. End of the test. (1) VOUT_NOM is the nominal output voltage level of the regulator. NCP702 operating VIN must be in the range 2.0V ≤ VIN ≤ 5.5V 5/14/2012 -2- www.onsemi.com Test Setup 2: Oscilloscope Square Pulse Generator - VEN CH1 CH2 + VEN Electronic Electronic Power Supply Load - VIN + VIN + VOUT - VOUT V VOLTMETER1 Figure 2. Test setup for the measurements of the Enable functionality Required Equipment: DC Power Supply – Max. 5.5V Electronic Load, Voltmeter, Oscilloscope 5/14/2012 -3- www.onsemi.com Test Procedure for the measurements of the Enable functionality using Test Setup 2: 1. Connect the test setup as shown on Figure 2, 2. Apply the required input voltage e.g. VIN = VOUT_NOM + 0.3V (1) 3. Set the electronic load for the required load current e.g. IOUT = 10mA, 4. Set the square wave generator to generate the following pulse waveform: 5. Verify with the oscilloscope that the output voltage VOUT turns ON/OFF. 6. Turn off the pulse generator. 7. Turn off the electronic load. 8. Turn off the input power supply 9. End of the test (1) VOUT_NOM is the nominal output voltage level of the regulator. NCP702 operating VIN must be in the range 2.0V ≤ VIN ≤ 5.5V 5/14/2012 -4- www.onsemi.com Test Setup 3: Electronic Power Supply - VIN + VIN A V NANOAMP METER VOLTMETER2 V VOLTMETER1 Figure 3. Test setup for the measurements of the disable current Required Equipment: DC Power Supply – Max. 5.5V 2 x Voltmeter, Nanoampere meter 5/14/2012 -5- www.onsemi.com Test Procedure for the measurements of the disable current using Test Setup 3: 1. Connect the test setup as shown on Figure 3, 2. Apply the required input voltage e.g. so that Voltmeter1 indicates VIN = VOUT_NOM + 0.3V (1) 3. Verify that the output voltage measured by Voltmeter2 is very close to 0V, 4. Read the disable current measured by the nanoampere meter. 5. Turn off the input power supply 6. End of the test (1) VOUT_NOM is the nominal output voltage level of the regulator. NCP702 operating VIN must be in the range 2.0V ≤ VIN ≤ 5.5V. 5/14/2012 -6- www.onsemi.com