Datasheet

40V 90.41% 89.80% 89.09%
48V 88.97% 90.19% 89.80%
57V 87.20% 90.00% 90.28%
Table 3. Line Regulation with Input Voltage Swept from 40V to 57V at No Load and Max Load Conditions
Input Load 3.3V 5V
40V to 57V 0W -12.7mV (-0.38%) 20mV (0.40%)
40V to 57V 20.94W -5.5mV (-0.17) 1.8mV (0.04%)
Table 4. Load Regulation of 3.3V and 5V Rails Swept from Zero to Full Current While the Other Rail is Held
at 0A or Full Output
3.3V
swept from 0 to 1.8A 5.0V swept from 0 to 3A
Input Voltage 5V = 0A 5V = 3A 3.3V = 0A 3.3V = 1.8A
40V 2mV (0.61%) -2.9mV (0.09%) -90.3mV (-1.81%) -87.1mV (-1.74%)
48V 2.5mV (0.8%) -3.5mV (-0.11%) -75.5mV (-1.51%) -75.7mV (-1.51%)
57V 4.9mV (0.15%) -5.4mV (-0.16%) -59.3mV (1.19%) -67.8mV (-1.36%)
Table 5. Cross Regulation of 3.3V and 5V Rails for Different Input Voltages.
3.3V 5.0V
40V 4.2mV
(0.13%) 134.5mV (2.69%)
48V 1.5mV (0.05%) 115.4mV (2.31%)
57V -2.6mV (0.08%) 102.4mV (2.05%)
Data points represent the difference in output voltages when alternating maximum current output for each
rail. For example, output voltage when (3.3V = 0A and 5.0V = 3A) minus output voltage when (3.3V = 1.8A
and 5.0V = 0A).
Step Load Response
Figure 3. Load step at 3.3V (100%, 50%, 100% of 1.8A), 40V input, 5V at 0A. CH1: 3.3V rail, CH2: 5V rail,
CH3: 3.3V rail current.