5B Series Power Supplies


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.

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 PWR-01
Models PWR-01
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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.


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.

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:

5B Series Module Current Requirements

Model  Current 
AC1367 6.5 mA
30 mA
30 mA
30 mA
30 mA
15 mA
15 mA
30 mA
200 mA
170 mA
30 mA
30 mA
200 mA
70 mA
5B46 70 mA
5B47  30 mA

5B Series Backplanes and Mounting
Current Requirements

Model  Current 
5B01 0 mA
32 mA
0 mA
0 mA
0 mA
40 mA
0 mA

5B Series Power Supply Specifications
(typical @ +25°C and nominal line voltage)

Description  955
5 Watt Output 
25 Watt Output
Input Voltage Range 105 V rms to 125 V rms
85 V rms to 265 V rms
50 Hz to 250 Hz
47 Hz to 63 Hz
Internal Line Fuse
250 Vrms, 2 A Slo Blow
Output Voltage
5 Vdc
5 Vdc1
Remote Sense Terminals
Short Circuit Protection2
Current Limited
Current Limited
Overvoltage Protection
+6.2 V dc
+6.0 V dc
Output Current
1000 mA
5000 mA
Voltage Accuracy
±2% maximum
Temperature Coefficient
Line Regulation
Load Regulation
Ripple & Noise
2 mV pk-pk maximum
50 mV pk-pk maximum
Breakdown Voltage
2500 V rms, minimum
2500 V rms, minimum
Switching Frequency
65 kHz
Operating Temperature Range
-25°C to +71°C
0°C to +70°C
Storage Temperature Range
-25°C to +85°C
-40°C to +85°C
Cooling Free Air Convection
Free Air Convection
Chassis Mount; Encapsulated
Mounting Threaded Inserts
Four, 4-40 x 0.15"
Four, 4-40 x 0.15"

1 Adjustable ±3%
Substantial overload can be withstood, including direct short. Prolonged operation should be avoided since excessive temperature rises will occur.
Specifications subject to change without notice.