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

Specifications subject to change without notice.

B_S(D)-W2

B/2-2012

Page 2 of 3

OUTPUT SPECIFICATIONS

TYPICAL CHARACTERISTICS

Item

Test conditions

Min.

Typ.

Max.

Units

Output power

0.25

W

For Vin change of

±1%(3.3V output)

±1.5

Line regulation

For Vin change of

±1%(others output)

±1.2

10% to 100% load(3.3V output)

15

20

10% to 100% load (5V output)

12.8

15

10% to 100% load (9V output)

8.3

15

10% to 100% load (12V output)

6.8

15

Load regulation

10% to 100% load (15V output)

6.3

15

%

Output voltage accuracy

See tolerance envelope graph

Temperature drift

100% full load

±0.03

%/

°C

Ripple & Noise*

20MHz Bandwidth

50

75

mVp-p

Switching frequency Full load, nominal input

110

kHz

*Test ripple and noise by

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

Power Converter section, application notes.

Operating Temp.( C)

o

APPLICATION NOTE

RECOMMENDED CIRCUIT

1) 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.

2) 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. It

’s not recommended to connect any external capacitor in the

application field.

3) 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).

4) 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.

5) No parallel connection or plug and play

L

Vin

GND

+Vo

0V

DC

Cin

L

DC

Cout

(Figure 1)

Vin

GND

Vin

GND

REG

+Vo

0V

+Vo

DC DC

DC

DC

REG

0V

(Figure 2)