Wall Industries, Inc. 5 Watson Brook Road Exeter, NH 03833

603-778-2300 www.wallindustries.com Fax 603-778-9797

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CMSP & CMSPW Series

50, 66, 75, and 100 Watts

Half Brick, Single Output

DC/DC Converter on a Chassis Mount

Rev. A

FEATURES

● CE Mark

● 100% Burn In

● Isolated and Regulated

● Wide Input Voltage Ranges

● Fixed Operating Switching Frequency

● Short Circuit and Over Voltage Protected

● Input and Output Filtering Integral to Supply

● UL1950, cUL950, TUV EN60950 File E155800

● 50, 66, 75, and 100 Watt Output Rating from Same Package

DESCRIPTION

The CMSP & CMSPW series consists of single output half brick DC/DC converters on a chassis mount that offer up to 100 watts of

output power in an industry standard package and footprint. It is intended to provide power and isolation for pc board and chassis

mount applications requiring high power density. Some features include wide input voltage ranges, positive or negative remote

on/off, remote sense, output trim, short circuit protection, and over voltage protection. Being encapsulated, these supplies have

improved thermal dissipation and protection for ruggedized environments. All models are 100% burned-in.

SPECIFICATIONS: CMSP & CMSPW Series

All specifications apply @ 25°C ambient unless otherwise noted

INPUT SPECIFICATIONS

Input Voltage Range

CMSP ..................... 24VDC nominal input ........................ 18 - 36 VDC

48VDC nominal input ........................ 36 - 75 VDC

CMSPW.................. 48VDC nominal input ........................ 18 - 75 VDC

Input Filter ........................................................................................ Pi filter

Input Reflected Ripple...................................................................20mAp-p

Standard ........................Active High Enable (Positive Remote ON/OFF)

“R” suffix .......................Active Low Enable (Negative Remote ON/OFF)

OUTPUT SPECIFICATIONS

Output Voltage ............................................................................. See table

External Output Trim (minimum) ........................................................ ±10%

Voltage Tolerance ....................................................................... ±1% max.

Output Current ............................................................................. See table

Output Power ............................................................................... See table

Line Regulation ................................................................................. ±0.1%

Load Regulation ............................................................................... ±0.1%

Minimum load........................................................................ none required

Ripple/Noise (20MHz BW) ..........................................................1.5% Vout

Remote Sense ..................................................Up to 0.5V power line drop

Transient Response ..........................................................±5.0% deviation,

100

μ/sec recovery to within ±1.0%

PROTECTION SPECIFICATIONS

Short Circuit Protection................................................................ continuous

Over Voltage Protection ............... Approximately 120% Vout, self-resetting

Current Limiting Inception............................................ Approximately 125%

Thermal Overload...................................... +110°C baseplate, self-resetting

GENERAL SPECIFICATIONS

Efficiency .................................................................................... 85% typical

Switching Frequency (fixed) ................................................... 400kHz ±10%

Isolation Voltage

Input to Output ................................................................... 1500VDC min.

Input to Case ...............................................................................750VDC

Output to Case.............................................................................750VDC

Isolation Resistance (Input to Output) ............................................> 100MΩ

ENVIRONMENTAL SPECIFICATIONS

Operating Temperature ..................................... -40°C to +100°C baseplate

Storage Temperature ......................................................... -55°C to +125°C

Humidity (non-condensing)..................................................20% to 95% RH

Temperature Coefficient ........................................................ 0.01%/°C max

PHYSICAL SPECIFICATIONS

Weight .................................................................................... 7.52oz (213g)

Dimensions (L x W x H)........................................ 5.70 x 3.40 x 1.34 inches

144.8 x 86.4 x 34 mm

Due to advances in technology, specifications subject to change without notice