Test Procedure for the NCV8852GEVB Evaluation Board Table 1: DEMONSTRATION BOARD TERMINALS Pin Name Function VIN Positive dc input voltage VOUT Regulated dc output voltage GND Common dc return EN/SYNC Enable input and external clock synchronization input Table 2: ABSOLUTE MAXIMUM RATINGS (Voltages are with respect to GND) Rating Value Units Dc supply voltage (VIN) -0.3 to 36 V Dc supply voltage (EN/SYNC) -0.3 to 6.0 V Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect device reliability. Table 3: ELECTRICAL CHARACTERISTICS (TA = 25°C, 6.0 V ≤ VIN ≤ 36 V, VEN/SYNC = 5.0 V, 0 ≤ IOUT ≤ 2.0 A, unless otherwise specified) Characteristics Conditions Typical Value Units Regulation Output Voltage 5.0 V Voltage Accuracy 2 % Line Regulation IOUT = 1.0 A 0.04 % Load Regulation VIN = 13.2 V 0.12 % Switching Switching Frequency 170 kHz Soft-start Time 2.0 ms SYNC Frequency Range 170 to 500 kHz Current Limit Average Current Limit TBD A Cycle-by-cycle Current Limit TBD A Protections Input Undervoltage Lockout VIN decreasing TBD V (UVLO) Thermal Shutdown TJ rising 170 °C 5/3/2012 -1- www.onsemi.com Operational Guidelines 1. Connect a dc input voltage, within the 6.0 V to 36 V range, between VIN and GND 2. Connect a load between VOUT and GND 3. Connect a dc enable voltage, within the 2.0 V to 5.5 V range, between EN/SYNC and GND 4. Optionally, for external clock synchronization, connect a pulse source between EN/SYNC and GND. The high state level should be within the 2.0 V to 5.5 V range, and the low state level within the 0.0 V to 0.8 V range, with a minimum pulse of TBD and a frequency within the 170 kHz to 500 kHz range. VIN IOUT ZOUT VEN VSY NC Figure 1: NCV8852EVB Board Connections 5/3/2012 -2- www.onsemi.com Typical Performance Efficiency Figure 2: Efficiency at 170 kHz for a 5.0 V output 5/3/2012 -3- www.onsemi.com Regulation Figure 3: Line Regulation for 170 kHz and a 5.0 V output Figure 4: Load Regulation for 170 kHz and a 5.0 V output 5/3/2012 -4- www.onsemi.com