•41920 Christy Street
•Fremont, California
•94538-3158
•510-657-2635
•Fax: 510-657-6634
•email: sales@digipwr.com
•www.digipwr.com
UPF300 Series
Universal Input
Power Factor
Corrected
300 Watt
Switchers
• Active Power Factor Correction
• 75% efficiency
• EN55022-B conducted
• UL, cUL, TUV
• CE
• CB test certificate
• Up to 2 outputs
• Compact 8" x 4.5" x 2" size
• Optional cover
• Optional power fail / power
good signal
Consult factory for the following
options:
• OR’ing diodes
• Remote Sense
• Single-Wire Forced Current
Sharing
• Packaging with Custom Hot-
Swap Connectors
The UPF300 series are high efficiency, open frame switchers
that deliver up to 300W of power from one or two outputs.
The UPF300 series is very similar to the UP300 series. The
major difference is that the UPF300 series includes active
Power Factor Correction (PFC), which improves input power
factor to better than 0.98 and reduces input current line
harmonics below the limit required to meet the applicable
European directives. The physical dimensions of the two series
are generally the same; however, certain models may require
additional heat sinking for low voltage, high current outputs.
The UPF300 is one of the flexibility series. In addition to the
popular models listed on this sheet, hundreds of potential
other modified standard models are available that include full
safety agency approval and do not require any Non-Recurring
Engineering (NRE) charge. Prototype delivery is typically just
a few weeks.
Flexibility options include a cover, power fail/power good
signal, and an isolated V2 output. Output voltage options are
given in the table below. Full custom models are also
available. Please contact the factory for details.
Notes:
1At least 20% of maximum output current is
required to maintain stated regulation.
2Convection cooling
3Forced air cooling
4Peak output, 30 sec max
5The UPF300 series allows very fast flexible
modified standard designs within these
parameters without non-recurring engineering
charge and while retaining safety agency
approval. Please contact the factory for details.
6Can be specified in 0.1V increments
7Can be specified in 0.75V increments
8Operational extremes per safety agency testing
Output Current Ratings
Model Output
Number1Output Voltage Min1Max2Max3Peak4
UPF300-105 V1
r
15V 1A 30A 50A 55A
UPF300-112 V1
r
12V 1A 12A 25A 27A
UPF300-115 V1
r
15V 1A 10A 20A 21A
UPF300-124 V1
r
24V 0.5A 6A 12.5A 13.5A
UPF300-148 V1
r
48V 0.2A 3.2A 6.2A 6.7A
UPF300-201 V1
r
5V 1A 30A 40A 45A
V2
r
12V 0.2A 8A 12A 15A
Modified standard V1
w
3.3V to
w
48V61A 55A
flexibility output V2
w
2.0V to
w
48V70.2A 12A
options5
Available Models
Parameter Limits
Input
Input Voltage Range 90 – 250Vac rated
81-265Vac operation8
Input Frequency 47 to 63Hz
Input Operating Current 5A rms max
Input Surge Current 35A max, cold start, 250Vac
Efficiency 75% typ at nominal input, full power
Output
Output Power 150W, natural convection cooling
300W with forced air
325W peak
Power Foldback Point 120% of max rated power
Line Regulation
w
0.2%, Vin (min) to Vin (max)
Load Regulation
w
1% (V1, 20% to 100% Io)
w
1% (V2, 20% to 100% Io)
Cross Regulation
w
1% (V1, 20% to 100% Ioon V2-V4)
w
1% (V2, 50% to 100% Ioon V1)
Noise and Ripple 0.5mV max RMS, 1% max P-P, on V1 or V2
with full load
Parameter Limits
Output (cont’d)
Power Up Overshoot 5% max, all outputs
Transient Response for 25% to 75% Iochange, 5% maximum
deviation, with recovery to 1% within 500
e
S
Hold-up time 16mS, nominal input, full output power
Overvoltage Protection Threshold 125% typ of nominal voltage, V1 and V2 (+only)
Power Limit Point 125% typ of maximum rated power
Control
Remote Sense Voltage Drop V1, 0.25V max (each lead)
Environmental
Operating Temperature Range 0°C to 50°C
(full power)
Operating Temperature Range 0°C to 70°C Derate linearly from full
(extended range) power at 50°C to half power at 70°C
Storage Temperature Range
s
25°C to
r
85°C
Relative Humidity 5% to 95%, non-condensing
Vibration 0.75G peak, 5Hz to 500Hz. Test three
orthogonal axes at 1 octave/min, 5 min
dwell at four major resonances
Specifications are typical at 25°C unless otherwise designated.
•41920 Christy Street
•Fremont, California
•94538-3158
•510-657-2635
•Fax: 510-657-6634
Specifications
DPO499.18-2.5M