LDC200 DC DC Converter
DC to DC Converters

LDC200 Series

  • Category DC to DC Converters
  • Type Rugged Environment 28V Converters
  • Power 200 Watts
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LDC200 Series Introduction

The LDC200 series is a high-efficiency, compact MIL-STD-704 input power (18-36V) DC-DC single output power converter for rugged environments and demanding, mission-critical loads. With precise ±0.1% regulation, 90%+ efficiency, and extremely fast transient response, the LDC200 series units are ideal point of load converters for sensitive equipment. Designed to meet MIL-STD-461 EMI/EMC and MIL-STD-810 environmental requirements in an all-in-one package. 3.3 to 28VDC Outputs standard.

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

Key Features

  • Wide Input Range
  • High Efficiency
  • Ultra-Precise <±0.1% Line and Load Regulation
  • Load Step Response <1% No Load to Full Load, <50uS
  • MIL-STD-461 CE102 Input
  • Compact, Lightweight Form Factor
  • MIL-STD-810 Environmental Requirements

Specifications

  • DC INPUT
    MIL-STD-704 Input Power 28 VDC (18-36V) for Normal, Abnormal, Emergency Steady State Voltage.
    Under-voltage continued operation available with holdup (H) option.
  • EFFICIENCY
    90% Minimum
    3.3, 5VDC Models 70%
  • LINE REGULATION
    ±0.1%
    3.3, 5VDC Models ±0.1VDC
  • LOAD REGULATION
    ±0.1%
    3.3, 5VDC Models ±0.1VDC
  • RIPPLE AND NOISE (PARD)
    ±0.5% When measured with 20MHz Bandwidth
    3.3, 5VDC Models ±0.2VDC

  • LOAD STEP RESPONSE
    <1% No Load to Full Load
    <3% Full Load to No Load
    <50nS Typical
  • ISOLATION
    Dielectric Withstanding Voltage
  • DWV: INPUT TO OUTPUT
    200VDC
  • DWV: INPUT TO CASE
    200VDC
  • DWV: OUTPUT TO CASE
    200VDC
  • TEMPERATURE (STORAGE)
    -50°C to +100°C
  • TEMPERATURE (OPERATING)
    -40°C to +85°C baseplate with no power derating
  • CIRCUIT PROTECTION
    Each unit is completely protected against a short circuit or overload of any duration. The current limit is nominally set at 120% of full load. The output voltage automatically restores to normal when the short is removed.
  • INPUT PROTECTION
    Over-voltage continued operation up to 80 VDC transients (MIL-STD-704), under-voltage shutdown (holdup option available separately).
  • OVER TEMPERATURE PROTECTION
    Over-temperature shutdown +110°C±5°C, typical
  • REMOTE SENSING
    Compensates for voltage drop up to limits of input power. Unit operates at nominal voltage with sense lines disconnected.
  • CONTROL FEATURES
    ON/OFF “INHIBIT”
    Application of TTL Signal (logic 1)
    ‘referenced to input’ will inhibit output.
  • WEIGHT
    2.0lbs max
  • ENVIRONMENTAL CONDITIONS
    MIL-STD-810
    Shock: Method 516.6, Procedure IV
    Vibration: Method 514.5
    Humidity: Method 507 (Converter operates without any evidence of degraded performance in non-condensing relative humidity up to 95%. All assemblies conformal coated).
    Altitude: Method 500.4, Procedure I & II
    Salt Fog: Method 509.4
    High Temperature: Method 501.4, Procedure I & II
    Low Temperature: Method 502.4, Procedure I
    Sand and Dust: Method 510.4, Procedure I & II
    Explosive Atmosphere: Method 511.4, Procedure
    Acceleration: Method 513.5, Procedure I & II
  • CONNECTOR (J1)
    DB25
  • MATERIAL
    Aluminum 6061-T6 or eq
  • FINISH (BASEPLATE)
    Chemical Film MIL-DTL-5541, Type II, Class 3 (Clear)
  • FINISH (COVER)
    Anodize MIL-A-8625 Type 2 Class 2 (Black)
Mechanical Drawings

 

Standard Models

Model Number OUTPUT VOLTAGE OUTPUT CURRENT LINE REGULATION LOAD REGULATION RIPPLE AND NOISE (PARD) LOAD STEP RESPONSE TURN ON OVERSHOOT EFFICIENCY (FULL LOAD) OUTPUT POWER
LDC200S3.3 3.3VDC 16.67A ±0.1VDC ±0.1VDC ±0.2VDC <1% NL-FL 50uS <0.2% 70% MIN 55W
LDC200S5 5.0VDC 16.67A ±0.1VDC ±0.1VDC ±0.2VDC <1% NL-FL 50uS <0.2% 70% MIN 83W
LDC200S12 12VDC 16.67A ±0.1VDC ±0.1VDC <0.5% <1% NL-FL 50uS <0.2% 90% MIN 200W
LDC200S13.6 13.6VDC 14.71A ±0.1VDC ±0.1VDC <0.5% <1% NL-FL 50uS <0.2% 90% MIN 200W
LDC200S15 15VDC 13.33A ±0.1VDC ±0.1VDC <0.5% <1% NL-FL 50uS <0.2% 90% MIN 200W
LDC200S24 24VDC 8.33A ±0.1VDC ±0.1VDC <0.5% <1% NL-FL 50uS <0.2% 90% MIN 200W
LDC200S28 28VDC 7.14A ±0.1VDC ±0.1VDC <0.5% <1% NL-FL 50uS <0.2% 90% MIN 200W