TDC_PWR40_A02

04/2007

Page 4

OUTPUT POWER

The PWR40xxC series was designed to meet power requirements up

to 4W. Due to the nature of unregulated power supplies, a higher-than-

rated output voltage will result when less-than-rated power is used

(see Typical Performance Curves). This series has been designed to

run from no load to 4W without derating up to +70°C.

UNBALANCED LOADS

Unbalanced loads may be used on dual output models with each side

sourcing up to 200mA as long as the total power out is not more than

4W. With an unbalanced load, the output voltages will track within

5% of each other.

OUTPUT NOISE

The output noise can be reduced to less than 50mVp-p by adding a

low ESR 10μf tantalum capacitor across each output.

TYPICAL PERFORMANCE CURVES

T

A

APPLICATION NOTES

SHORT CIRCUIT PROTECTION

To maintain low cost, the PWR40xxC Series provides limited short-

circuit protection. To protect against continuous short circuits, a fuse is

required. It is recommended that the fuse be placed in series with the

Input Voltage

5V

229.015

12V

229.500

15V

229.375

24V

229.250

TABLE I. Recommended Fuses (or Equivalent)

Murata Power Solutions, Inc. makes no representation that the use of its products in the circuits described herein, or the use of other

technical information contained herein, will not infringe upon existing or future patent rights. The descriptions contained herein do not imply

the granting of licenses to make, use, or sell equipment constructed in accordance therewith. Specifications are subject to change without

notice.

© 2009 Murata Power Solutions, Inc.

USA:

Mansfield (MA), Tel: (508) 339 3000, email: sales@murata-ps.com

Canada:

Toronto, Tel: (866) 740 1232, email: toronto@murata-ps.com

UK:

Milton Keynes, Tel: +44 (0)1908 615232, email: mk@murata-ps.com

France:

Montigny Le Bretonneux, Tel: +33 (0)1 34 60 01 01, email: france@murata-ps.com

Germany:

München, Tel: +49 (0)89-544334-0, email: ped.munich@murata-ps.com

Japan:

Tokyo, Tel: 3-3779-1031, email: sales_tokyo@murata-ps.com

Osaka, Tel: 6-6354-2025, email: sales_osaka@murata-ps.com

China:

Shanghai, Tel: +86 215 027 3678, email: shanghai@murata-ps.com

Guangzhou, Tel: +86 208 221 8066, email: guangzhou@murata-ps.com

Singapore: Parkway Centre, Tel: +65 6348 9096, email: singapore@murata-ps.com

Murata Power Solutions, Inc.

11 Cabot Boulevard, Mansfield, MA 02048-1151 U.S.A.

Tel: (508) 339-3000 (800) 233-2765 Fax: (508) 339-6356

www.murata-ps.com email: sales@murata-ps.com ISO 9001 & ISO 14001 REGISTERED