Modular Devices, Inc. is excited to introduce to you our newest product release – the 3845 Booster, featuring high efficiency and short circuit protection. Model 3845 is a modern GaN design specifically designed for cube sat, commercial space and traditional space applications.

The 3845 is a Rad Hard non-isolated Booster with a 9 VDC to 20 VDC input and a 28 VDC output with 120W capability. Model 3845 is a modern GaN design specifically designed for cube sat, commercial space and traditional Space applications. It features high efficiency and short circuit protection. 3845 is packaged in a 2.61” by 2.71” flanged case.Unlike simple DC-DC boosters which allow unlimited current when the output voltage is less than the input voltage, Model 3845 contains an internal FET that opens the input/output connection when the output voltage is less than the input voltage. This feature not only provides short circuit protection but also allows the output to be inhibited when commanded.Two modes of voltage regulation are provided. The first mode is the conventional precise regulation, and is selected by the user by connecting 28 VDC to the load return to pin 12.The second mode is a precision droop regulation, which allows paralleling two or more booster units for higher power. The droop is approximately 2 VDC from no load to full load. Droop regulation is selected by the user by connecting the 28 VDC load return to pin 11.

Features

• Rad Hard: TID > 100kRad(Si)

• Gan HEMT design

• 2:1 margin: Operates beyond 200kRad TID

• No SEE:LET > 82MeV*cm2/mg

• Proton Resistant: Magnetic Coupled RF feedback design

• Specifically designed for redundant or individual space applications

• Completely self contained Thick Film Hybrid DC-DC Converter• No external filter caps required

• “Inhibit-not” function

• Power on soft start

• 270kHz operation for low ripple and fast response time

• Built-in EMI input filter

• Short circuit and overvoltage protection

• Built-in test capability

Specifications

INPUT: 12 VDC nominal

Range: 8 to 20 VDC continuous

9 to 20 VDC full power

Starts at 9 VDC runs to 8 VDC

ISOLATION:

Input to case: 500 VDC

Output to case: 500 VDC

ENVIRONMENT:

Storage temperature: -55°C to +150°C

Shock: 50 G’s

Acceleration: 500 G’s

Vibration: 30 G’s

Grades: EU, L, & S:

Full Power Output at Tcase = +85°C

Lineary derates to zero at Tcase = +115°C

Grades LE, & SE:

Full Power Output at Tcase = +125°C

Lineary derates to zero at Tcase = +135°C

Grades L & LE:

TID up to 45kRad(Si)

No SEE up to 60MeV*cm2/mg

WEIGHT: 160 grams typical

Click on the link below to learn more.

http://mdipower.com/mdi/pdf/3845-Booster.pdf

Interested in what else MDI has to offer, then please visit us at www.mdipower.com and review the many products available. If you don’t see what you are looking for, contact us info@kruse.de and we will be happy to discuss your requirements with you. Our Staff is always available to help and guide you. We look forward to working with you.

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