SANYO Semiconductors Test Procedure for the LV8804FVGEVB Evaluation Board Oscilloscope CURRENT PROBE AMPLIFIER1 PROBE INPUT OUTPUT FAN Motor Function generater Power supply Table: Required Equipment Efficiency 12V-1A DC 0-VREG 4 channel Equipment Power supply Function generator Oscilloscope Current probe LV8804FV Evaluation Board Motor 3/26/2012 12V-3W 1 www.onsemi.com SANYO Semiconductors Test Procedure: 1. Connect the test setup as shown above. 2. Initial check Boot up at the VCC = 12V. CTL=0V(PWM 100%) Confirm that the motor rotates smoothly and in a right direction. Switch the FR switch when the motor rotation direction defferent. 3. Booting check (StartUp-mode) Check whether a booting of a motor is stable. (Booting) Boot up at the VCC = 6V and 12V. When CTL voltage vary from 0V to 4V, check to chamge the motor rotation speed. And then, at each VCC and CTL voltage check whether a motor boots 100 times in 100times. Check the some waveforms. (Booting waveforms) Boot up at the VCC =12V. Check the WO, VO and FG voltage waveform at scope CH1, CH2 and CH3, and the output current waveform of WO at scope CH4 by the Oscilloscope. ex) These waveforms are different by each motor. StartUp-mode T=0.5s/div UO 5V/div FG 5V/div Current of UO 1A/div Turn on the power supply 3/26/2012 2 www.onsemi.com SANYO Semiconductors 4. Normal rotation check (Regular-Rotation-mode) Check the some waveforms. (Rotation waveforms) Supply the VCC=12V. Check the WO, VO and FG voltage waveform at scope CH1, CH2 and CH3, and the output current waveform of WO at scope CH4 by the Oscilloscope. ex) These waveforms are different by each motor. Regular-Rotation-mode T=2ms/div UO 5V/div FG 5V/div Current of UO 1A/div 3/26/2012 3 www.onsemi.com SANYO Semiconductors 5. Lock detection check (Motor-Lock-mode) Check the Lock detection behavior. (Lock) Supply the VCC=12V. Check the signal of WO, VO and UO is off when stop the Motor by your hand forcibly. Then, check the WO, VO and FG voltage waveform at scope CH1, CH2 and CH3, and the output current waveform of WO at scope CH4 by the Oscilloscope. ex) These waveforms are different by each motor. Motor-Lock-mode T=0.5s/div UO 5V/div FG 5V/div Current of UO 1A/div The Motor is stopped 6. Checking result A sample of checking result is shown below. VCC 12V 6V 3/26/2012 CTL voltage 0V 1.5V 2.5V 0V 1.5V 2.5V Booting 100/100 OK 100/100 OK 100/100 OK 100/100 OK 100/100 OK 100/100 OK Rotation speed (rpm) - 4 Rotation waveforms OK OK OK OK OK OK Io value value value value value value Lock OK OK OK OK OK OK www.onsemi.com