O Umted States Patent [191
`Lanni
`
`IIIIIIIIIIIIIIII
`
`US005636110A
`[11] Patent Number:
`[45] Date of Patent:
`
`5,636,110
`Jun. 3, 1997
`
`[54] SMALL FORM FACTOR POWER SUPPLY
`
`4,307,441 1211981 Bello ....................................... .. 363/25
`4,622,627 11/1986 Rodriguez etal.
`363/37
`
`
`
`Inventor: Thomas W. Lanni’ Laguna Nigucl, Calif.
`
`
`
`.......... .. 4,885,674 12/1989 Varga m1. ..
`
`
`
`m 363/21
`
`-
`.
`-
`[73] Asslgnee' lcoingrgghfwimless Technologles’ Inc"
`’
`‘
`
`[21] Appl. No.: 567,369
`_
`[22] Filed:
`
`Dec. 4, 1995
`
`Related US. Application Data
`
`363/49
`4,890,214 12/1989 Yamamoto ...... ..
`363/21
`5,019,954
`5/1991 Bourgeault et a1.
`363/16
`5,146,394
`9/1992 Ishii et al. ....... ..
`363/25
`5,177,675
`1/1993 Archer ........ ..
`363/37
`5,184,291
`2/1993 Crowe et a1. .
`363/71
`5,309,348
`5/1994 Leu ............. ..
`5,479,331 12/1995 Lenni ...................................... .. 363/21
`Primary Examiner-Peter S. Wong
`Assistant Examiner—Ado1f Berhane
`Attorney, Agent, or Fim1-—Loeb & Loeb LLP
`
`63 Continuation-in- artof Ser. No. 233,121,A r. 26, 1994, Pat.
`[
`] 146.5,479331. P
`P
`
`[57]
`
`ABSTRACT
`
`[60] Provisional application No. 60/002,488, Aug. 17, 1995.
`6
`Cl. ................................................. -.
`[5
`[52] US. Cl. .......................... .. 363/21; 363/144; 363/147;
`363/97
`[58] Field of Search ................................ .. 363/17, 20, 24,
`363/21, 25, 78, 79, 80, 97, 98, 132, 144,
`147; 323/212
`
`[56]
`
`References Cited
`U.S. PATENT DOCUMENTS
`
`A mfw’ Small form factor power supply_ is disclosed that
`provides a regulated DC power supply in a package that
`radiates rclativgly lime
`and that occupies 2_85)6‘OX
`0,436 inches, The secondary coil of the transformer is
`positioned at the summing node of the flux of the primary
`coils and the phase of the drive signals provided to the
`secondary coils is regulated to control the current and
`voltage provided by the secondary circuit. Preferably, all
`circuit components are surface mount devices and the trans
`former cores are E block planar cores mounted on the
`Prmtcd “1mm b‘md'
`
`4,257,089
`
`3/1981 Ravis ...................................... .. 363/25
`
`55 Claims, 21 Drawing Sheets
`
`110
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`1236
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`23
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`Sorias Exhibit 2002, Page 1
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`US. Patent
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`Jun. 3, 1997
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`Sheet 1 of 21
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`5,636,110
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`Sorias Exhibit 2002, Page 2
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`US. Patent
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`Jun. 3, 1997
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`Sheet 2 0f 21
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`5,636,110
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`Sorias Exhibit 2002, Page 3
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`Sorias Exhibit 2002, Page 4
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`US. Patent
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`Jun. 3, 1997
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`Sheet 4 0f 21
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`5,636,110
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`Sorias Exhibit 2002, Page 5
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`Sorias Exhibit 2002, Page 6
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`US. Patent
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`Jun. 3, 1997
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`Sheet 6 0f 21
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`5,636,110
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`:1
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`FIG. 6
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`Sorias Exhibit 2002, Page 7
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`US. Patent
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`Jun. 3, 1997
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`Sheet 7 of 21
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`5,636,110
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`Sorias Exhibit 2002, Page 8
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`U.S. Patent
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`Jun. 3, 1997
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`Sheet 8 of 21
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`5,636,110
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`Ed:
`WM W
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`Sorias Exhibit 2002, Page 9
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`US. Patent
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`Jun. 3, 1997
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`Sheet 9 0f 21
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`5,636,110
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`"L- JL ‘ TIME
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`FIG. 8
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`Sorias Exhibit 2002, Page 10
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`Jun. 3, 1997
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`Sorias Exhibit 2002, Page 11
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`US. Patent
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`Jun. 3, 1997
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`Sheet 11 of 21
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`5,636,110
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`US. Patent
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`Jun. 3, 1997
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`Sheet 12 0f 21
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`5,636,110
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`Sorias Exhibit 2002, Page 13
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`Sorias Exhibit 2002, Page 14
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`US. Patent
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`Jun. 3, 1997
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`Sheet 14 of 21
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`5,636,110
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`US. Patent
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`Jun. 3, 1997
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`Sheet 15 of 21
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`U.S. Patent
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`Jun. 3, 1997
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`Sheet 16 0f 21
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`5,636,110
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`US. Patent
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`Jun. 3, 1997
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`Sheet 17 of 21
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`Sorias Exhibit 2002, Page 18
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`U.S. Patent
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`Jun. 3, 1997
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`Sheet 18 0f 21
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`U.S. Patent
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`Jun. 3, 1997
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`Sheet 19 0f 21
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