D-XMS Datasheet, PDF (2/3 Pages) Microdc power Technology Co., Ltd – 1W,FIXED INPUT,1000V ISOLATED UNREGULATED TWIN OUTPUT DC-DC CONVERTER

ISOLATION SPECIFICATIONS
Item
Test Conditions
Min.
Typ.
Isolation voltage (Vin/Vout)
Tested for 1 minute and 1mA max 1000
Isolation voltage (Vo1/Vo2)
Tested for 1 minute and 1mA max 1000
Isolation resistance (Vin/Vout)
Test at 500VDC
1000
Isolation resistance (Vo1/Vo2)
Test at 500VDC
1000
Isolation capacitance(Vin/Vout)
30
Isolation capacitance(Vo1/Vo2)
30
Max.
Units
VDC
VDC
MΩ
MΩ
pF
pF
D-XM Series
TYPICAL CHARACTERISTICS
OUTPUT SPECIFICATIONS
Item
Test Conditions
Min. Typ.
Max.
Units
Output power
Line regulation
Load regulation
Load regulation
Output voltage accuracy
Temperature drift
Ripple & Noise*
Switching frequency
For Vin change of 1%
10% to 100% load (3.3V output)
10% to 100% load(5V output)
100% full load
20MHz Bandwidth
Full load, nominal input
0.1
1
W
±1.5
%
15
20
%
12.8
15
%
See tolerance envelope graph
±0.03
%/℃
75
100
mVp-p
130
KHz
RECOMMENDED CIRCUIT
*Test ripple and noise by "Parallel cable"method. See detailed operation instructions at Testing of Power
Converter section, application notes.
APPLICATION NOTE
Requirement on output load
To ensure this module can operate efficiently and reliably, During operation, the minimum output load
could not be less than 10% of the full 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 , or use our company
products with a lower rated output power.
Recommended circuit
If you want to further decrease the input/output ripple , an "LC" filtering network may be connected to
the input and output ends of the DC/DC converter, see (Figure 1).
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 startup problem might arise. For every channel
of output , provided the safe and reliable operation is ensured , the recommended capacitance of its filter
capacitor sees (Table 1).
Output Voltage Regulation and Over-voltage Protection Circuit
The simplest device for output voltage regulation, over-voltage and over-current protection is a linear
voltage regulator with overheat protection that is connected to the input or output end in series (Figure 2).
It's not recommended to connect any external 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
overload.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
http://www.microdc.cn Technical Enquiries-Email:[e-mail] Tel:[phone] Page 2 of 3