Delta Electronics Delphi 6A Series - Manual (Page 8)

DS_NE12S06A_06302008
8
Output Capacitance
There is internal output capacitor on the NE 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 24 has been
used for both input reflected/ terminal ripple current and
output voltage ripple and noise measurements on NE
series converters.
DC-DC Converter
1uF
Ceramic Tan
10uF
Vin+ Load
Ltest
Cs Cin
Output voltage ripple noise measurement point
Input reflected current measurement point
Cs=270μF*1, Ltest=2uH, Cin=270μF*1
Figure 24: Input reflected ripple/ capacitor ripple current and
output voltage ripple and noise measurement setup for NE06
FEATURES DESCRIPTIONS (CON.)
Voltage Margining Adjustment
Output voltage margin adjusting can be implemented in
the NE modules by connecting a resistor, R
margin-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 23 shows the circuit
configuration for output voltage margining adjustment.
Vt
Vin Vout
Enable
Ground Ground
Trim
ND 6A/10A
Rmargin-down
Rs
Rmargin-up
Figure 23: Circuit configuration for output voltage margining
Paralleling
NE06 converters do not have built-in current sharing
(paralleling) ability. Hence, paralleling of multiple NE06
converters is not recommended.
NE6A/10A