NCV898031SEPGEVB ON Semiconductor

NCV898031SEPGEVB NCV898031 Automotive Grade HighFrequency SEPIC Controller Evaluation Board User s Manual NCV898031SEPGEVB Table 1. EVALUATION BOARD TERMINALS Terminal Function V Positive DC Input Voltage IN GND Common DC Return V Regulated DC Output Voltage OUT EN Enable Input Table 2. ABSOLUTE MAXIMUM RATINGS (Voltages are with respect to GND) Rating Value Unit DC Supply Voltage (V ) 0.3 to 40 V IN DC Supply Voltage (EN) 0.3 to 6 V Junction Temperature 40 to 150 C Ambient Temperature (Evaluation Board) 40 to 105 C Stresses exceeding those listed in the Maximum Ratings table may damage the device. If any of these limits are exceeded, device functionality should not be assumed, damage may occur and reliability may be affected. Table 3. ELECTRICAL CHARACTERISTICS (T =25C, 4.5 V V 40 V, V =2V, V = 3.3 V, 0 I 1.2 A, unless otherwise specified) A IN EN OUT OUT Characteristic Condition Typical Value Unit Switching Switching Frequency 2 MHz Soft-Start Time 650 s Current Limit Cycle-by-Cycle Current Limit (FET) 4 A Protections Input Undervoltage Lockout (UVLO) V Decreasing < 6 (Note 1) V IN Input Undervoltage Lockout (UVLO) V Increasing 6.7 V IN Thermal Shutdown T Increasing 170 C A Product parametric performance is indicated in the Electrical Characteristics for the listed test conditions, unless otherwise noted. Product performance may not be indicated by the Electrical Characteristics if operated under different conditions. 1. NCV898031 IC UVLO is 3.05 V (V falling). The demo board current limit resistor was selected to limit power when V is reduced below IN IN 6 V. See Point 3 from Test Procedure. PCB LAYERS Figure 2. Top View Figure 3. Bottom View