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P/N 1036, Description: P220-8-5, Topology: 2-Switch Forward,
1.0 kW
Application:
This transformer is a good example of 1kW transformer for
150kHz military forward converter that does not require 4kV
isolation. This part provides 500 VDC isolation between windings
and between any winding and core. It utilizes copper leadframes,
Polyimide insulators and has 1mm creepage and clearance distances.
This is sufficient for a power supply with 120 to 200 VDC
input bus delivering output of 28VDC with 36 amperes continuous
load. Reduced isolation requirement enabled our designers
to reduce the footprint by about 26% and the height by 10%.
98.6 % efficiency and low thermal impedance allow for 42° C temperature rise when mounted on +60°C base plate.
No air air flow is required. |
| 1. Input Bus Voltage Range: |
120 to 200 VDC
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10. Minimum Isolation Voltage |
| 2. Output After Rectification: |
28V/36A
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| 10.1. Primary To Core And To Secondary: |
500 VDC
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| 3. Turns Ratio Np/Ns |
8 turns / 5 turns
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| 10.2. Secondary To Core: |
500 VDC
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| 4. Optimum Switching Frequency: |
150 kHz
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| 11. Minimum Primary Inductance: |
320 uH
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| 5. Maximum Duty Cycle: |
40.0 %.
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| 12. Max.resistance Rdc, Primary Np: |
4.0 mOhm
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| 6. Efficiency At Full Power: |
98.7 %.
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| 13. Maximum resistance Rdc, Ns total: |
2.2 mOhm
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| 7. Base Plate/Heatsink Maximum Temperature: |
+60°C
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| 14. Max. Dimensions |
2.180" x 1.640" x
.700"
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| 8. Air Flow temperature, Speed: |
Not Required
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| 15. Maximum Weight: |
200 g
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| 9. Temperature Rise Hot Spot- Base Plate
maximum: |
40°C
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Notes
- Dimensions are in inches
- Drawing not to scale
- Dimension tolerance +/- 2% unless noted
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