DFC15 SERIES – DUAL OUTPUT
NOTES
(1)
All Parameters measured at Tc=25°C, nominal input voltage and full rated load unless otherwise noted.
Refer to the Technical Reference Section for the definition of terms, measurement circuits and other
information.
Noise is measured per Technical Reference Section. Measurement bandwidth is 0-20 MHz.
An input capacitor must be used for proper operation of the converter. See the DFC15 Series Application
Notes on sizing the input capacitor.
Load regulation for the outputs is specified as the voltage change when both outputs are changed from
maximum to minimum at the same time.
Cross regulation is defined as the change in one output when the other output is changed from full load
to 25% of full load. The converter can be run at no load on either or both outputs with no damage.
Short term stability is specified after a 60 minute warmup at full load, constant line and recording the
drift over a 24 hour period.
The input ripple rejection is specified for DC to 120 Hz ripple with a modulation amplitude of 1% of Vin.
DFC15 SERIES APPLICATION NOTES:
External Capacitance Requirements
An external capacitance is required for operation of the DFC15
Series. For maximum performance, it is recommended that the
DFC15 Series use a capacitor of sufficient ripple current capacity
connected across the input pins. To meet the reflected ripple
requirements of the converter, an input impedance of less than
0.05 Ohms from DC to 200KHz is required. External output
capacitance is not required for operation, however it is
recommended that 1 F to 10 F of tantalum and 0.001 to 0.1 F
ceramic capacitance be selected for reduced system noise.
Additional output capacitance may be added for increased
filtering, but should not exceed 400 F.
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POWER-ONE [ POWER-ONE ]
