Page 2 - MPD MD300ERW Datasheet
P. 2



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Model Selection Guide
Input Output Refl ected Fuse
Model Effi ciency Ripple Capacitive Rating
Load
Number Voltage (VDC) Current (mA) Voltage Current Current (%, Typ) Current (µF, Max) Slow-Blow
Nominal Range Full-Load No-Load (VDC) (mA, Max) (mA, Min) (mA Typ) (mA)
MD305S-05ERW 5 4.5 - 9.0 685 40 5.0 500 25.0 73 30.0 2,200 1,500
MD305S-09ERW 5 4.5 - 9.0 676 40 9.0 278 14.0 74 30.0 1,000 1,500
MD305S-12ERW 5 4.5 - 9.0 650 40 12.0 208 10.0 77 30.0 630 1,500
MD305S-15ERW 5 4.5 - 9.0 676 40 15.0 167 8.0 74 30.0 470 1,500
MD305S-24ERW 5 4.5 - 9.0 658 60 24.0 104 6.0 74 30.0 330 1,500
MD305D-05ERW 5 4.5 - 9.0 676 40 ±5.0 ±250 ±13.0 74 30.0 1,000 1,500
MD305D-12ERW 5 4.5 - 9.0 650 40 ±12.0 ±104 ±5.0 77 30.0 470 1,500
MD305D-15ERW 5 4.5 - 9.0 650 40 ±15.0 ±83 ±4.0 77 30.0 330 1,500
MD312S-03ERW 12 9.0 - 18.0 282 20 3.3 758 38.0 74 30.0 2,700 750
MD312S-05ERW 12 9.0 - 18.0 329 20 5.0 600 30.0 76 30.0 2,200 750
MD312S-12ERW 12 9.0 - 18.0 305 20 12.0 250 13.0 82 30.0 680 750
MD312S-15ERW 12 9.0 - 18.0 302 20 15.0 200 10.0 83 30.0 470 750
MD312D-05ERW 12 9.0 - 18.0 321 20 ±5.0 ±300 ±15.0 78 30.0 1,000 750
MD312D-12ERW 12 9.0 - 18.0 317 20 ±12.0 ±125 ±6.0 79 30.0 470 750
MD312D-15ERW 12 9.0 - 18.0 313 20 ±15.0 ±100 ±5.0 80 30.0 330 750
MD324S-03ERW 24 18.0 - 36.0 141 7 3.3 758 38.0 74 110.0 2,700 350
MD324S-05ERW 24 18.0 - 36.0 155 7 5.0 600 30.0 81 110.0 2,200 350
MD324S-09ERW 24 18.0 - 36.0 151 7 9.0 333 17.0 83 110.0 1,000 350
MD324S-12ERW 24 18.0 - 36.0 151 7 12.0 250 13.0 83 110.0 680 350
MD324S-15ERW 24 18.0 - 36.0 151 7 15.0 200 10.0 83 110.0 470 350
MD324S-24ERW 24 18.0 - 36.0 151 7 24.0 125 6.0 83 110.0 330 350
MD324D-05ERW 24 18.0 - 36.0 158 7 ±5.0 ±300 ±15.0 79 110.0 1,000 350
MD324D-12ERW 24 18.0 - 36.0 151 7 ±12.0 ±125 ±6.0 83 110.0 470 350
MD324D-15ERW 24 18.0 - 36.0 151 7 ±15.0 ±100 ±5.0 83 110.0 330 350
MD348S-05ERW 48 36.0 - 75.0 82 7 5.0 600 30.0 76 45.0 2,200 200
MD348S-12ERW 48 36.0 - 75.0 78 7 12.0 250 13.0 80 45.0 680 200
MD348S-15ERW 48 36.0 - 75.0 75 7 15.0 200 10.0 84 45.0 470 200
MD348D-05ERW 48 36.0 - 75.0 79 7 ±5.0 ±300 ±15.0 79 45.0 1,000 200
MD348D-12ERW 48 36.0 - 75.0 76 7 ±12.0 ±125 ±6.0 82 45.0 470 200
MD348D-15ERW 48 36.0 - 75.0 76 7 ±15.0 ±100 ±5.0 82 45.0 330 200
Notes: Derating Curve
1. At no load, output voltage accuracy is ±1.5% typical and ±5.0% max.
2. The load on dual output units should not be unbalanced more than ±5 %. Units
operated with unbalanced loads greater than ±5% may not meet all specifi cations.
3. When measuring output ripple & noise, it is recommended that an external capacitor
(100 µF typ.) be placed from the +VOUT to the -VOUT pins for single output units and
from each output to common for dual output models. The maximum output ripple
specifi ed for model MD324S-05ERW is 65 mV.
4. Transient recovery is measured to within a 1% error band for a load step change
of 25%.
5. With the addition of the MDCFM-02A (or a similar discrete fi lter), all models will meet EN
55022 class B. A suggested input circuit is shown in the connection diagram on page 3.
Contact the factory for more information.
6. To meet the requirements of EN 61000-4-4 (±2 kV), external components are needed.
The connection diagram on page 3 shows an external input fi lter that would typically
achieve this. With the addition of the MDCFM-02A, EN 61000-4-4 (±4 kV) can be
achieved. Contact the factory for more information.
7. To meet the requirements of EN 61000-4-5 (±2 kV), external components are needed.
This can be done discretely (as shown in the connection diagram on page 3), or with the
addition of the MDCFM-02A. Contact the factory for more information.
8. These units should not be operated with a load under 5% of full load. Operation at no-load
will not damage the unit, but they may not meet all specifi cations.
9. It is recommended that a fuse be used on the input of a power supply for protection. See
the Model Selection table above for the correct rating.
Remote ON/OFF Control
The MD300x-ERW may be started or shutdown by the control pin input (pin 3). This input is
current controlled. The unit operates when this input is open. When the input is “high” (current
is fl owing into the pin), the converter shuts down. The input current to this pin should be kept
between 5 mA to 10 mA. Exceeding 20 mA on this input or connecting it directly to ground
could damage the converter.
The diagram at right gives a suggested input circuit for the control pin. The diode (D1) is an
RB160M-60/1A and CD is is a 47 nF/100V. The resistor R1 is determined by the formula:
R = [(VC-VD-1.0)/IC]-300
Where: VC = voltage to ground from pin 3
V
D = the forward conduction voltage drop of D1
IC = the control pin current (5 - 10 mA)
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