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3.2 Transformer
Required Components | Schematic |
Winding Stackup
Core = EFD20 | 1 |
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Bobbin = 10 pin; SMD; Horizontal | 1/2 Pri - 36 T | |
2
1/2 Pri - 36 T
3
4
Vcc - 25 T
8
Output - 10 T
6
Vcc 25 T
1/2 Primary - 36 T
Secondary - 10T
1/2 Primary - 36 T
5
Electrical Specifications
| Pin | Spec. | Remarks |
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Inductance | 1 - 3 | 537.0 - 656.0 uH | 100 kHz, 0.10 Vrms |
Leakage | 1 - 3 |
| All other windings shorted |
3.3 Bill of Materials
Sch Ref | Vendor | Part Number | Description |
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BD1 | Fairchild | DF10S | 1.5A, 1000 V Bridge |
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C1 | NIC Components or Equivalent | NPX104M275VX2M | 0.1µF, X2 cap |
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C2 | NIC Components | NREH470M450V18X36F | 47µF, 450V |
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| UCC | ESMH451ESN470MN25S | 47µF, 450V |
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C3 | TDK | C4520X7R3A102KT | 1000 pF, 1kV, SMD |
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C4 | NIC Components or Equivalent | NACK470M50V6.3X8TR | 47µF, 50V, SMD |
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C5 | NIC Components or Equivalent | NMC0603X7R104K50TRP | 0.1µF, 50V, 0603 |
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C6 | NIC Components or Equivalent | NMC0603X7R103K50TRP | 0.01µF, 50V, 0603 |
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C7 | NIC Components or Equivalent | NMC0603X7R104K50TRP | 0.1µF, 50V, 0603 |
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C8 | NIC Components or Equivalent | NMC0603X7R105K16TRP | 1.0µF, 16V, 0603 |
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C9 | NIC Components or Equivalent | NMC0603NPO182F25TRP | 1800 pF, 25V, 0603, NPO |
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C10 | NIC Components or Equivalent | NMC0603X7R471K50TRP | 470 pF, 50V, 0603 |
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C11 | NIC Components or Equivalent | NRSJ102M16V10X16TB | 1000µF, 16V, Leaded |
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C12 | NIC Components or Equivalent | NACK470M50V6.3X8TR | 47µF, 50V, SMD |
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C13 | Panasonic | 2200pF, | |
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C14 |
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| Prov. for 0805 |
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C15 | TDK | C4520CH3F101K | 100 pF, 3kV, SMD |
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© 2007 Fairchild Semiconductor | Page 8 of 17 | Rev 1.1 April 2007 |