PME-xxxxTLF
PSD-SERIES
Rev.04-2009
1 Watt
Unregulated
Single
Output
SMD
Case –
Full Pin
1 kV
DC I/O Isolation
Low Ripple and Noise
Mainzer Straße 151–153
D-55299 Nackenheim
Tel. +49 6135 7026-0
Fax: +49 6135 931070
www.peak-electronics.de
peak@peak-electronics.de
The PSD series is a family of cost effective 1 W single output DC/DC
converters. These converters are in an ultra miniature SMD full-pin case.
Devices are encapsulated. High performance features: 1000VDC
input/output isolation, industrial standard pinout, high power density, no
heat sink required
All specifications typical at Ta=25° nominal input voltage and full load unless otherwise specified
C,
Input Specifications
Voltage Range
Input Filter
Output Specifications
Voltage Accuracy
Short Circuit Protection
Line Regulation
Load Regulation
(10% - 100%)
± 10%
Capacitors
± 3%
Short Term
± 1.5%, max.
(For Vin Change of 1%)
± 1.2%, max.
(For Vin Change of 1%)
20%, max.
15%, max.
10%, max.
75 mV pk-pk, max.
± 0.03% / °
C
See Table
1000 VDC
1000 M Ohm
100 kHz, typ
(5, 12 Vin)
; 500 kHz
(24Vin)
95% rel H
> 3500 khrs
Non Conductive Black Plastic
(UL94V-0 rated)
Epoxy
(UL94V-0 rated)
~ 1.4g, max.
-40 to +85°
(ambient)
C
-55 to +125°
C
Free Air Convection
(10mm distance required)
Not usable for heat steam soldering
3.3 Vout
Others
3.3 Vout
5 Vout
9, 12, 15, 24 Vout
Ripple and Noise
(20Mhz bandwidth)
Temperature Coefficient
General Specifications
Efficiency
I/O Isolation Voltage
(3 sec.)
I/O Isolation Resistance
(Tested at 500 VDC)
Switching Frequency
Humidity
Reliability Calculated MTBF
(MIL-HDBK-217F)
Physical Specifications
Case Material
Potting Material
Weight
Environment Specifications
Operating Temperature
Storage Temperature
Cooling
Soldering
RoHS Conform
PSD-Series – PME-xxxxTLF – Single Output – SMD - Plastic Case
Specification can change without a notice – We accept no liability for any inaccuracy or printing errors.
Page 1/4
App Notes
Requirement on output load
To ensure this module can operate efficiently and reliably, during operation, the
minimum output load is
not less than 10%
of the full load, and that
this product
should never be operated under no-load!
If the actual output power is very small,
please connect a resistor with proper resistance at the output end in parallel to increase
the load.
Recommended testing circuit
If you want to further decrease the
input/output ripple, an “LC” filtering
network may be connected to the
input and output ends if the DC/DC
converter, see Figure on the right
hand side.
It should also be noted that the inductance and the frequency of the “LC” filtering
network should be staggered with the DC/DC frequency to avoid mutual interference.
However, the capacitance of the output filter capacitor must be proper. If the
capacitance is too big, a start-up problem might arise. For every channel of output,
provided the safe and reliable operation is ensured, the greatest capacitance of its
filter capacitor sees (see Table).
EXTERNAL CAPACITOR TABLE
Output Voltage Regulation and
Vin
Vout
Cin (uF)
Cout (uF)
Over-voltage
(VDC)
(VDC)
Protection Circuit
3.3 / 5
4.7
3.3 / 5
10
The simplest device for output voltage
12
2.2
9
4.7
regulation, over-voltage and over-
24
0.47
12
2.2
current protection is a linear voltage
--
--
15
1
regulator with overheat protection that
--
--
24
0.47
is connected to the input or output
It’s not recommend to connect any external
end in series.
capacitor in the application field with less
than 0.5 watt output.
Overload Protection
Under normal operating conditions, the output
circuit of these products has no protection against
over-current and short-circuits. The simplest
method is to connect a self-recovery fuse in series
at the input end or add a circuit breaker to the
circuit.
No parallel connection or plug and play.
PSD-Series – PME-xxxxTLF – Single Output – SMD - Plastic Case
Specification can change without a notice – We accept no liability for any inaccuracy or printing errors.
Page 4/4
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