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Model: 3813-S28

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3813-S28

18 Watt Proton Rad Hard 100K+® DC-DC Converter

Features

RadHard TID >100kRad(Si)
No SEE: LET > 82meV*cm^2/mg
Proton Resistant: No optocouplers used
Inhibit-not function
Power on soft start
200kHz operation for low ripple and fast response time
External Sync
Fully hermetic package
Fully Isolated design with magnetically coupled feedback

Specifications

Input: 28 VDC
Input Range (Continuous): 18 VDC to 50 VDC
Isolation Input to Case: 500 VDC
Isolation Input to Output: 500 VDC
Isolation Output to Case: 500 VDC
Storage Temp: -55 °C to +150 °C
Shock: G's
Acceleration: G's
Vibration: G's
Weight: 35 gms typical

Environment

Grade EU:
Full Output Power at Tcase = 85°C
Minimum Output Power at Tcase = -55°C
Linearly derates to zero at Tcase = 115
TID up to kRad(Si)
No SEE up to 60MeV*cm2/mg
Grade L:
Full Output Power at Tcase = 85°C
Minimum Output Power at Tcase = -55°C
Linearly derates to zero at Tcase = 115
TID up to 45kRad(Si)
No SEE up to 60MeV*cm2/mg
Grade LE:
Full Output Power at Tcase = 125°C
Minimum Output Power at Tcase = -55°C
Linearly derates to zero at Tcase = 135
TID up to 45kRad(Si)
No SEE up to 60MeV*cm2/mg
Grade S:
Full Output Power at Tcase = 85°C
Minimum Output Power at Tcase = -55°C
Linearly derates to zero at Tcase = 115
TID up to 100kRad(Si)
No SEE up to 60MeV*cm2/mg
Grade SE:
Full Output Power at Tcase = 125°C
Minimum Output Power at Tcase = -55°C
Linearly derates to zero at Tcase = 135
TID up to 100kRad(Si)
No SEE up to 60MeV*cm2/mg

Additional Notes

To operate converter, open Inhibit-not pin.

To inhibit converter, connect Inhibit-not pin to Input Return.

If not used, leave sync pin open

Suggested EMI Filter MDI Model 3723

Single Output Devices

Toggle Columns: Parameter - Conditions
Parameters Conditions 3813-S28 (18W) MIN 3813-S28 (18W) TYP 3813-S28 (18W) MAX
Output set voltage +lout = -lout+ +27.7 +28.0 +28.1
Output current Vin min — Vin max 0.065A — 0.65A
Efficiency Pout = max rated load 80% 84% —
Line regulation Pout = max rated load
Vin min — Vin max		 — 50mV 250mV
Load regulation Pout = 10% to F.L. — 400mV 700mV
Output ripple F.L. BW 2 MHz
mVpp		 — 180 300

Pinout Table

3813-Sxx >24VDC
Pin-1: Inhibit Not
Pin-2: Output +
Pin-3: N/C
Pin-4: Output Return
Pin-5: Sync
Pin-6: Case
Pin-7: +28VDC Input Return
Pin-8: =28VDC Input

Case Styles

Part Number Designator Case Style Pin Count Mounting Step File
AA Case Style 18 8 Seam Weld Flangeless PCB Mount Download
AF Case Style 19 8 Seam Weld Flanged PCB Mount —