Modern Linear Power Supplies

LPS Series

  • Category AC to DC Power Supplies
  • Type Linear AC to DC Power Supplies
  • Power 12-210 Watts
Contact Us Spec Sheet 3D Models
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LPS Series Introduction

Clean Linear Power, Long-Term Support, Customer Configurable.

The LPS Series is a family of rugged linear AC-DC power supplies for long-running, mission-critical applications that require clean, quiet, tightly regulated DC power. Designed as modernized replacements for legacy linear power supplies, LPS units preserve established mechanical envelopes, mounting patterns, and electrical interfaces with MIL-grade construction, modern manufacturing methods, and current-production high-reliability components.

LPS configurations are available for single-output applications, with related LPD configurations available for dual-output requirements. Standard and custom configurations can be provided to support existing terminal/header interfaces or hermetic circular connector interfaces, helping reduce redesign effort and accelerate replacement of unsupported power supplies in active and legacy systems.

The LPS Series is well suited for programs addressing DMSMS, obsolescence management, life-cycle sustainment, supportability, and readiness-driven replacement of legacy power hardware. Abbott maintains configuration control and builds assemblies in house, supporting long-term availability, repeatable manufacturing, and responsive modification support for legacy and active programs alike.

This series is Factory Configurable both electrically and mechanically to best fit your application.

Key Features

  • Form Fit Function Replacement (DMSMS)
  • Modern Design, Manufacturability, Supply Chain
  • Customer Configurable
  • Single and Dual Outputs
  • Terminal Header and Mil-Circular Connectors
  • MIL-STD-810 Environmental Requirements

Specifications

  • AC INPUT
    105-125 VAC, 55-65Hz or 380-420Hz, single phase.
  • EFFICIENCY
    30% minimum.(50% typ, 28 VDC Model at 100% load).
  • LINE REGULATION
    ±0.1% of nominal over the full range of line input voltage.
  • LOAD REGULATION
    ±0.2% for change from no load to full load.
  • PARD (RIPPLE AND NOISE)
    Peak-to-peak combined ripple and noise does not exceed 0.2% nominal output measured with a 25 MHz bandwidth.
  • ELECTROMAGNETIC COMPATIBILITY
    Designed to meet MIL-STD-461.
  • ISOLATION
  • INPUT TO OUTPUT
    500 VDC
  • INPUT TO CASE
    500 VDC
  • OUTPUT TO CASE
    500 VDC
  • INSULATION RESISTANCE
    50 megohms minimum between input and output, input and case, output and case when measured at 50VDC.
  • INPUT TRANSIENT PROTECTION
    MIL-STD-1399, Section 103 (143.8VAC for 0.3 Seconds).
    Optional MIL-STD-704 Figure 3, Limit 1 (180VAC for 0.1 Seconds). Contact Factory.
  • SHORT CIRCUIT PROTECTION
    Completely protected against short circuit of any duration. Output automatically restores to normal after removal of short.
  • LOAD TRANSIENT RESPONSE
    Output voltage returns to regulation limits within 100 microseconds after 50% step change in load current.
  • LOAD TRANSIENT OVERSHOOT
    2% maximum from nominal voltage set point.
  • OUTPUT VOLTAGE AND CURRENT
    Over-voltage protection (crowbar) set to 20% nominal rated output.
    Output adjust ±5% via adjustable potentiometer.
  • TEMPERATURE RANGE: STORAGE
    -55°C to +85°C.
  • TEMPERATURE RANGE: OPERATING
    -20°C to +70°C baseplate with no power derating.
  • ENVIRONMENTAL CONDITIONS
    Encapsulated and hermetically sealed to meet the environmental requirements of MIL-STD-810, MIL-S-901.
  • RELIABILITY
    MTBF 69,700 hours at 50C baseplate calculated per MIL-HDBK-217 in naval sheltered environment (455,100 hours ground benign).
  • OPTIONAL
    Hermetically Sealed Circular Connectors
    Remote ON/OFF
    Overtemperature Protection

    Other outputs and/or inputs available upon request.

Standard Models

Model No. Output Volts (VDC) Output Current (A) Power (W) Size
LPS20S5
LPS50S5
LPS75S5
LPS150S5 		5
5
5
5 		2.4
6
10
20 		12
30
50
100 		LPS20
LPS50
LPS75
LPS150
LPS20S6.3
LPS50S6.3
LPS75S6.3
LPS150S6.3 		6.3
6.3
6.3
6.3 		2.4
6
10
20 		15.12
37.8
63
126 		LPS20
LPS50
LPS75
LPS150
LPS20S12
LPS50S12
LPS75S12 		12
12
12 		1.7
4
7.5 		20.4
48
90 		LPS20
LPS50
LPS75
LPS20S15
LPS50S15
LPS75S15
LPS150S15 		15
15
15
15 		1.5
3
4
7.5 		22.5
45
60
112.5 		LPS20
LPS50
LPS75
LPS150
LPS20S24
LPS50S24
LPS75S24
LPS150S24 		24
24
24
24 		0.9
2.5
3.9
7.5 		21.6
60
93.6
180 		LPS20
LPS50
LPS75
LPS150
LPS20S28
LPS50S28
LPS75S28
LPS150S28 		28
28
28
28 		0.75
2
3.15
7.5 		21
56
88.2
210 		LPS20
LPS50
LPS75
LPS150
LPD15S12
LPD30S12
LPD50S12
 ±12
±12
±12 		0.5
0.9
1.5 		12
21.6
36 		LPD15
LPD30
LPD50
LPD15S15
LPD30S15
LPD50S15 		±15
±15
±15 		0.5
0.9
1.5 		15
21.6
45 		LPD15
LPD30
LPD50

Dimensions

SIZE A B C D E F G H WEIGHT (LBS MAX)
LPS20
LPS50
LPS75
LPS150 		2.75
4.25
4.50
5.50 		4.75
5.25
6.00
6.50 		3.75
4.00
4.00
5.00 		2.25
3.75
4.00
5.00 		4.25
4.75
5.50
6.00 		0.875
1.875
2.25
2.00
2.38
2.75
3.00 		4.0
7.0
10.0
14.0
LPD15
LPD30
LPD50 		3.00
4.00
5.50 		6.00
6.25
6.00 		3.375
3.375
3.375 		2.50
3.50
5.00 		5.50
5.75
5.50 		2.00
0.875
1.50
2.88
2.75

2.75 		4.5
6.0
8.0
Mechanical Drawings

Pin Assignment

Pin Function
1 INPUT
2 INPUT
3 GND
4 N/C
5 +OUTPUT
6 +SENSE
7 -OUTPUT
8 -SENSE
9 TRIM

Have additional questions about the LPS Series?

Speak with our Application Engineers.

The LPS Series is intended to support replacement of legacy linear AC-DC power supplies where continued availability, manufacturability, and long-term support are critical. For many applications, a replacement unit can be configured that preserves the installed envelope, mounting arrangement, connector style, nominal output configuration, and required option behavior so customers can maintain system architecture while addressing obsolescence and supply-chain risk.

the LPS Series can accommodate a broad range of legacy option requirements, including connector variations, remote functions, output adjustment, environmental options, temperature variants, input variations, and protection-feature differences. Abbott standard configurations already incorporate many features that were previously optional on older designs, including modern protection features and improved manufacturability. Where required for legacy compatibility, over-voltage protection can also be omitted by request.

Typical configurable items include:

  • Standard terminal/header or hermetic circular connector interfaces
  • Remote inhibit / remote on-off functions
  • Output voltage adjustment options
  • Over-temperature protection configurations
  • Temperature and environmental variants
  • Input / interface variants for legacy replacement programs
  • Standard crowbar OVP or OVP omitted by request
  • Customer-specific documentation, screening, and qualification support