ABB AC 800M

Section 2 Transmission Media and Components Schottky Diode Specifications
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Schottky Diode Specifications
Table 51 lists the requirement specifications for the Schottky Diode. These
specifications must be followed when the diode is used in DeviceNet power supply.
DC/DC Converter
Table 52 lists the specifications for the DC/DC converter.
Diode Drop 3.04% 0.73 V
Common Mode Drop 41.66% 10.0 V
Supply Ripple 0.3125% 0.075 V
Input Ripple 3.125% 0.75 V
Total Voltage Budget 51.5% 12.96 V
(1) Based on a temperature coefficient of 0.03% and an ambient temperature of 60° C.
Table 51. Recommended Schottky Diode Specifications
Specification Parameter
Voltage Rating 30 V minimum
Electric Current Rating 25 amps
Maximum Vf @ Ifm = I0 0.73 V @Tc = 125° C with 16 A
Table 52. DC/DC Converter
Specification Parameter
Input Voltage Range 11 Volts to 25 Volts
Efficiency 70% minimum
Isolation (if required) 500 Volts
Table 50. Voltage Drop Budget
Specification Tolerance Actual Voltage