Description

24-12-3 DC Converter

Convert 17-32 VDC input to 12 VDC negative ground output for powering communication and navigation equipment on negative ground systems. (See Isolated Series for positive ground applications.)

Features:

Excellent Regulation: Output voltage maintained within 1% under all line and load conditions within the rating
The heat generated by semi-conductors is extracted and dissipated by large heat sink fins that maximize air contact for cool operation and the long life of components
Polyurethane conformal coating on PC boards and corrosion-resistant anodized aluminum cases with heavy-duty shock mounts assure survival in hostile environments

Numerous Converter and Load Protection Circuits:

Current limiting
Automatic thermal shutdown
Short circuit proof
Reverse polarity
Overvoltage protection
Carries CE mark

Specifications:

Input Voltage: 17-32
Output Voltage: 13.6
Output Amps (Intermittent): 3
Output Amps (Continuous): 3
Case Size (H x W x D): 3.5 x 3.5 x 1.75 inches (8.9 x 8.9 x 4.5 centimeters)
Weight: 1 lb. (.45 kg)
Output: 13.6 VDC (internally adjustable 12.6 -14.5)
Ripple: 150 mV P-P maximum
Regulation: 1% Line/Load
Switching Frequency: 40 kHz
Efficiency: 85% – Typical.
Isolation: Output/Chassis; Input/chassis: 250 VDC

Duty Cycle Ratings*:

Intermittent: 20 minutes max on time, 20% duty. current limit set at approx. 105% of intermittent rating.
Continuous: 24 hours, 100% duty *24-12-3: 2-minute max. on time
Idle Current: Less than 100 mA (including power “ON” light)

Operating Temp Specifications:

0-50 degrees C, Derate Linearly From 100% @ 40 degrees C To 50% @ 50 degrees C.
Thermal shutdown @ 70 degrees C Case Temperature
Model 24-12-3: Full output -25 degrees to +30 degrees C; Derate linearly from 100% @ +30 degrees C to 45% @ +50 degrees C

Mechanical Specifications: