9.2.3 Application Curves

Unless otherwise specified the following conditions apply: V_IN = 12 V, T_A = 25°C. The circuit is shown in Figure 18, with the BOM from Table 5. through Figure 35 show the conducted and radiated emissions performance tested against the CISPR25 Class 5 limits. For the conducted EMI results the limit lines labeled "AV5" represent the average limits, and the limit lines labeled "PK5" represent the peak limits. For the radiated EMI results the blue limit lines represent the average limits, and the black limit lines represent the peak limits.

VOUT = 3.3 V

2100 kHz

Figure 21. Efficiency

VOUT = 3.3 V

2100 kHz

Figure 23. Switching Frequency vs Input Voltage

VOUT = 3.3 V	2100 kHz	ILOAD= 10 mA - 0.3 A
Slew Rate = 1 A/µs

Figure 25. Load Transient

VOUT = 3.3 V

2100 kHz

Figure 22. Load Regulation

VOUT = 3.3 V

2100 kHz

Figure 24. Input Supply Current

VOUT = 3.3 V	2100 kHz	ILOAD= 10 mA - 0.6 A
Slew Rate = 1 A/µs

Figure 26. Load Transient

VIN = 13.5 V	VOUT = 5 V	IOUT = 1.5 A
Frequency Tested: 150kHz to 30 MHz

Figure 27. Conducted EMI vs. CISPR25 Limits (Yellow: Peak Signal, Blue: Average Signal)

VIN = 13.5 V	VOUT = 5 V	IOUT = 1.5 A
Frequency Tested: 150 kHz to 30 MHz

Figure 29. Radiated EMI Rod vs. CISPR25 Limits

VIN = 13.5 V	VOUT = 5 V	IOUT = 1.5 A
Frequency Tested: 30 MHz to 200 MHz

Figure 31. Radiated EMI Bicon Horizontal vs. CISPR25 Limits

VIN = 13.5 V	VOUT = 5 V	IOUT = 1.5 A
Frequency Tested: 200 MHz to 1 GHz

Figure 33. Radiated EMI Log Horizontal vs. CISPR25 Limits

VIN = 13.5 V	VOUT = 5 V	IOUT = 1.5 A
Frequency Tested: 1.8 GHz to 2.5 GHz

Figure 35. Radiated EMI Horn Horizontal vs. CISPR25 Limits

VIN = 13.5 V	VOUT = 5 V	IOUT = 1.5 A
Frequency Tested: 30 MHz to 108 MHz

Figure 28. Conducted EMI vs. CISPR25 Limits (Yellow: Peak Signal, Blue: Average Signal)

VIN = 13.5 V	VOUT = 5 V	IOUT = 1.5 A
Frequency Tested: 30 MHz to 200 MHz

Figure 30. Radiated EMI Bicon Vertical vs. CISPR25 Limits

VIN = 13.5 V	VOUT = 5 V	IOUT = 1.5 A
Frequency Tested: 200 MHz to 1 GHz

Figure 32. Radiated EMI Log Vertical vs. CISPR25 Limits

VIN = 13.5 V	VOUT = 5 V	IOUT = 1.5 A
Frequency Tested: 1.83 GHz to 2.5 GHz

Figure 34. Radiated EMI Horn Vertical vs. CISPR25 Limits

Figure 36. Recommended Input EMI Filter