7 Performance Curves

Unless otherwise specified the following condition apply: T_A = 25ºC, I_OUT1 = Primary output current, I_OUT2 = Secondary output current. Please note that for EVMs labeled as LM5168FQEVM, that the LM5168F is installed and approximately one half of the load current is available from this device. Both EVMs are identical, except for the converter IC installed.

Output Current = IOUT1 = IOUT2

Figure 7-1 Efficiency

IOUT1 = 0 A

VIN = 48 V

Figure 7-3 Load Regulation

VIN = 48 V

IOUT = IOUT2 = 100 mA

Figure 7-5 Typical Start-up Waveform

IOUT2 = 0 A

VIN = 48 V

Figure 7-2 Load Regulation

VIN = 48 V

IOUT = 0 A

Figure 7-4 Typical Switching Waveform

VIN = 48 V

IOUT = IOUT2 = 100 mA

Figure 7-6 Typical Shut-down Waveform