DC to DC Step Down Converter | 20VDC-42VDC to 13.8VDC, 7A

This ultra compact and lightweight step down converter from Lone Star Aviation boasts of a 90% efficiency rating and is available in several output models available: 24—3 VDC, 24—5 VDC, 24—7.5 VDC, 24—13.8 VDC, 24—16 VDC, and 24—19 VDC. This converter provides power for charging various consumer electronics such as tablets, cell phones, portable GPS units. camera equipment, DVD players, LCD screens, laptops, EFB, and other DC/AC inverters. It can be installed in the flight deck or passenger cabin using the DC connector and quick disconnect harness.

This DC step down converter supplies an output of 13.8 VDC.

Features

• 90% efficiency rating
• Lightweight and compact — weighing only 0.220 lb
• SMT technology
• Potentiometer for output adjustments
• Universal mounting (without thermal concerns)
• LED status indicators
• Operating temperature: -55°C to 70°C
• Over & under voltage, short circuit, over current, reverse polarity circuit protection
• Regulation Load: 1%
• Ripple: 18 mVpp
• Transient response time 0.5ms (max.) @ 13.8 VDC
• Easy installation — remote on/off
• TSO C71 approval

Specifications

Weight:
116g (4.09 oz)

Dimensions:
3.69 x 3.217 x 1.00 in

Input Current:
2.0-4.0 Amps (nom) at 27.5v DC (nominal input voltage)

Circuit Protection:
over voltage, under voltage protection, reverse polarity protection. (PS recovers automatically without damage)

Thermal Solution:
thermal self-contained (vented to allow ambient airflow)

Efficiency:
93% min. (22VDC — 28VDC input)

Ripple:
18mv peak-to-peak

Transient response time:
0.5 ms (max.)

PCB Material:
FR-4 fiberglass material UL 94-V0 flammability rating

Enclosure material:
aluminum (flame resistant)

Temperature:
-55°C to 70°C, operating
-55C to +80C, storage

Vibration Frequency:
5 Hz to 50 Hz

MTBF:
-125,000 hr

EMI:
TSO, MPS, 2.6, 100-54/DO-60

LED Indicator G/A/R:
Green: normal operations
Amber: over current, under voltage
Red: input polarity reversed, fault

Potentiometer Adjustment:
output voltage

Current Share:
share current between 2 units (max. 5 units)

Approval:
FAA TSO Approved