Test Procedure for the NCV7691RCLV1GEVB Evaluation Board Initial setup 1. 2. 3. Add jumpers OPEN1, OPEN2, … OPEN8 Remove jumpers SHORT1, SHORT2, … SHORT8 Connect strap S1, remove strap S2 Required Equipment • Bench Power Supply with Ampermeter • NCV7691 RCL Evaluation Board V2 Test procedure Step 1 (Current regulation): 1. 2. 3. 4. 5. 6. Connect the setup as shown above; Apply a supply voltage, sweep V BAT from 7 V to 40 V Check LEDxxR or LEDxxW regulation Check LED_ERR Check I BAT . Check FLTS (J1, pin4) Table 1: Desired Results LEDxxR or LEDxxW all on with constant brightness LED_ERR = off I BAT ~ 800 mA (Rx1 = 1R5) @ V BAT = 7 – 18 V; I BAT ~ 400 mA (Rx1 = 1R5) @ V BAT = 21 – 28 V; I BAT ~ 200 mA (Rx1 = 1R5) @ V BAT = 34 – 40 V FLTS = LOW Test procedure Step 2 (PWM): 1. 2. 3. Apply a supply voltage, V BAT = 12 V Toggle PWM (J1, pin 2) to GND Check LEDxxR or LEDxxW states Table 2: Desired Results LEDxxR or LEDxxW off when PWM is shorted to GND Test procedure Step 3 (LED Short): 07/20/15 1 www.onsemi.com 1. 2. 3. 4. 5. 6. 7. 8. Apply a supply voltage, V BAT = 12 V Short SHORT1 jumper terminals Remove the short Check LEDxxR or LEDxxW states Check LED_ERR state Check I BAT Check FLTS (J1, pin4) Disconnect V BAT Table 2: Desired Results LEDxxR or LEDxxW all off LED_ERR = on I BAT < 8 mA FLTS = HIGH Test procedure Step 4 (LED Open): 1. 2. 3. 4. 5. 6. 7. 8. Apply a supply voltage, V BAT = 12 V Open OPEN1 jumper terminal Close the terminal again Check LEDxxR or LEDxxW states Check LED_ERR state Check I BAT Check FLTS (J1, pin 4) Disconnect V BAT Table 4: Desired Results LEDxxR or LEDxxW all off LED_ERR = on I BAT < 8 mA FLTS = HIGH DC Characteristics FLTS LOW FLTS HIGH MIN 0 4 TYP MAX 1 6 End of Test 07/20/15 2 www.onsemi.com