5B SERIES POWER SUPPLIES

Features - AC/DC Power Supplies

Fully Encapsulated Chassis Mountable Current Limit Short Circuit Protection Low Output Ripple and Noise Excellent Line and Load Regulation Characteristics Free-Air Convention Cooling: No external Heat Sink Required High Current Output Models 5 V @ 5 amp; model 955 5 V @ 5 amp; model PWR-01 Wide Input Voltage Range 105 Vac to 125 Vac: Model 955 85 Vac to 205 Vac: Model PWR-01

Models: Order Now   PWR-01

Overview

Analog Devices' line of compact AC/DC modular supplies offer system designers a means of supplying a reliable, easy to use, low cost solution to powering the 5B Series and 6B Series Signal Conditioning subsystems. These models provide high accuracy, short circuit protected, regulated outputs with very low noise and ripple characteristics. All models contain threaded inserts to facilitate ease of mounting on the rear of the AC1363 19" rack mount kit. Screw terminals also provide ease of connections to both AC line supply and backplane power input terminals.

Model Descriptions

Three models are offered in power levels of 5 watt (Model 955) and 25 watt (Model PWR-01). High power, 25 watt, versions are supplied with plus and minus line sense terminals to facilitate remote load regulation. Two AC input voltage ranges provide the capability of handling varying line supply applications: 120 Vac (Model 955) and 120/240 Vac (Model PWR-01). These AC/DC supplies combine the advantages of both switching and linear regulated supplies in a small compact package. Using the switching regulator technique provides Model PWR-01 with high efficiency characteristics. The linear regulation method of Model 955 offers low levels of output noise and ripple - 2 mV rms, max. Model 955 provides a fixed 5 Vdc output (±2% max. accuracy), while Model PWR-01 offers an adjustable 5 Vdc output (±1% accuracy with ±3% adjustment range) and a "Power On" LED light.

Fusing

If AC supply input fusing is desired, use a slow blow type fuse that is rated for 150% to 200% of the power supply's full load AC input. As a rule of thumb, the full load AC input current is typically 28 mA for each 1 watt of output power. Model PWR-01 is provided with an internal, nonreplaceable, 2 ampere slow blow fuse on the AC supply line. To protect signal conditioning modules, should internal faults occur, all supplies are designed to clamp at an output voltage of 6.2 volts.

Mechanical Outline Drawings

Refer to the Outline Drawings section for mechanical drawings on Models 955 and PWR-01.

Determining Power Requirements

The total 5B system power requirement is a function of the modules and backplanes that are selected. Individual requirements are listed in the following tables: