The copyright and authority for the interpretation of the products are reserved by MORNSUN

Specifications subject to change without notice.

PWA_(M)D-1W5 & PWB_(M)D-1W 5

A/3-2012

Page 2 of 3

OUTPUT SPECIFICATIONS

TYPICAL CHARECTERISTICS

Item

Test Conditions

Min.

Typ.

Max.

Units

Output power

See above products program

0.15

1.5

W

Positive voltage accuracy

Refer to recommended circuit

±1

±3

Negative voltage accuracy Refer to recommended circuit

±3

±5

Load regulation

From 10% to 100% load

±0.5

±2*

Line regulation

Input voltage from low to high

±0.2

±0.75

%

Temperature drift

Refer to recommended circuit

±0.03

%/

°C

Ripple**

20MHz Bandwidth

20

50

Noise**

20MHz Bandwidth

50

100

mVp-p

Switching frequency

100% load, input voltage range

300

KHz

* Dual output models unbalanced load:

±5%.

**Test ripple and noise by

“parallel cable” method. See detailed operation instructions at Testing of Power

Converter section, application notes.

Operating Temp.(

)

C

Temperature Derating Graph

Safe Operating Area

APPLICATION NOTE

RECOMMENDED CIRCUIT

1) Requirement On Output Load

In order to ensure the product operate efficiently and reliably, in addition to a max load

(namely full load), a minimum load is specified for this kind of DC/DC converter. Make sure the

specified range of input voltage is not exceeded, the minimum output load no less than 10%

load. If the actual load is less than the specified minimum load, the output ripple may increase

sharply while its efficiency and reliability will reduce greatly. If the actual output power is very

small, please add an appropriate resistor as extra loading, or contact our company for other

lower output power products.

2) Recommended Circuit

All the PWA_(M)D-1W5 & PWB_(M)D-1W5 Series have been tested according to the

following recommended testing circuit before leaving factory. (See Figure 1).

If you want to further decrease the input/output ripple, you can increase capacitance properly

or choose capacitors with low ESR. However, the capacitance should not be too high, or may

cause start-up problem. For every channel of output, provided the safe and reliable operation is

ensured, the greatest capacitance of its filter capacitor sees (Table 1).If you want to use the

products in high EMI, please choose our metal packaged products (PWA_MD-1W5 &

PWB_MD- 1W5). General:

Cin:

24V&48V

10

μF~47μF

Cout: 10

μF/100mA

3) Input Current

When it is used in unregulated power supply, be sure that the fluctuating range of the power

supply and the rippled voltage do not exceed the module standard. Input current of power

supply should afford the startup current of this kind of DC/DC module. (See figure 2)

General: Ip

≤1.4*Iin-max

4) No parallel connection or plug and play

Vin

G ND

+Vo

0V

Cin

Cout

Vin

G ND

+Vo

0V

Cin

Co ut

DC

DC

-Vo

Cout

Sin gle o utp ut

DC

DC

(Figure 1)

Input Voltage (V)

Input Voltage

Range

Ip

(Figure 2)

Output External Capacitor Table (Table 1)

Single Vout

(VDC)

Cout

(uF)

Daul Vout

(VDC)

Cout

(uF)

3.3

2200

±5

680

5

1000

±12

330

9

680

±15

220

12

470

-

-

15

330

-

-