D12S300-1 Datasheet, PDF (9/13 Pages) Delta Electronics, Inc. – 4.5V~13.8Vin, 0.6V~5.0Vout, 60A

FEATURES DESCRIPTIONS (CON.)
Voltage Margining Adjustment
Output voltage margin adjusting can be implemented in
the ND modules by connecting a resistor, Rmargin-up, from
the Trim pin to the Ground for margining up the output
voltage. Also, the output voltage can be adjusted lower
by connecting a resistor, R , margin-down from the Trim pin to
the voltage source Vt. Figure 29 shows the circuit
configuration for output voltage margining adjustment.
Figure 29: Circuit configuration for output voltage margining
Output Capacitance
There are internal output capacitors on the D12S300-1
series modules. Hence, no external output capacitor is
required for stable operation.
Reflected Ripple Current and Output Ripple and
Noise Measurement
The measurement set-up outlined in Figure 30 has been
used for both input reflected/ terminal ripple current and
output voltage ripple and noise measurements on
D12S300-1 series converters.
Input reflected current measurement point
Vin+
Ltest
DC-DC Converter
Cs
Cin
1uF
Ceramic
10uF
Tan
Load
Output voltage ripple noise measurement point
Cs=330µF OS-CON cap x 1, Ltest=1µH, Cin=330µF OS-CON
cap x 1
Figure 30: Input reflected ripple/ capacitor ripple current and
output voltage ripple and noise measurement setup for
D12S300-1
DS_D12S300-1_12282009
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