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Патент Доналд Смит
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0% found this document useful (0 votes)
60 views13 pagesPat 6900557
Патент Доналд Смит
Uploaded by
Risto MitevCopyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF or read online on Scribd
/ 13
co») United States Patent
Gaudreau et al
US006900557B1
US 6,900,557 BL
May 31, 2005
(10) Patent No.:
(45) Date of Patent:
(54) HIGH PowER MopULATOR
(95) Ins: Mare Gans, Lexington
rs
Weston MA (US) met
Hawkey, inn MAS) eley
Cy, Wines Ma (0) Samee
Msimaney,Ssttosush MA
Peter A Danie sin, MA
Medi, MAC
(4), Nats: Sitio any disney x this
Fl
TSE ISo) hyo
(21) Ape No ova 382
(2) Filed: Jan, 1,200
mew von 1964
6 USC Sonia Salon 2 4
sonst
(58) of Search sont,
Sonn i581, 53H
ibaa Sos 8
5 References ied
US. PATENT bocUMENTS
Lapa A ‘aise mete ae
Spor AS ives BeBe 000 Sagan
bos A 2 Mises Rese 2B
Se AL seh Bee tae
SSS AL Tse 5 was
isiao A ise iat pi
Tats * Stow gana
Bebo 8 Som Reset te
a8
cov
;
|
CH
CHEE
RESIS E 91900 Sylvesey, J eal on 336/180
4967101 8 11990. Nokamors et 3110
Sin27018 A + ‘S991 Kindlann et 2 327436
51099,719 A * 2/1992 Kame ea sz7/108
Sussioog A + 9/192 Kevorkan ct a. ss. 32727
5.192.965 A * 11/1992. Merger 561/50
5424957 A + 6/1905 Iyotal et ay
Siasnin A + 81905 Gaudreau tal Mase
Sf.04L A + 11/1908. ourgsois Ses13¢
oairadd & > $2000 Vincielt s7az?
(0246598 BL > 62001 Taner ta. 328282
OTHER PUBLICATIONS
-IRPS40 HEXEET Power MOSFET Data Sheet", 1997."
International Rectifier, “IRLML2803 HEXFET Power
MOSFET Data Sheet", Aug. 1997."
P. Wood, “Transformer-Isolsted HEXFET® Driver Pro
vides very large duty eyele ratios” HEXFET Designer's
Manual Chapter 9 Application Note 950A:1-75-1-77
(1987)
* cited by examiner
Primary Examiner—Rober 1, Deberadinis
(74) Attorney, Agen, or Firm andiorio & Teska
6 ABSTRACT
Accompaet transformer coupled modulator is described. The
‘modulator includes transformer comprising a primary and
4 plusiliy of secondary windings, where each secondary
‘Winding us an output terminal. The modulator also includes
a plucality of switches, where each swith is associated with
4 respective secondary winding ad bas input and output
terminals snd 2 conteol terminal. The coateol terminal of
‘each switch isin electrical eommunieation wit a respective
‘ouput terminal ofthe plucility of secondary windings. Exch
ofthe plurality of switches i substantially simultaneously
‘Switced by an input signal applied tothe primary.
26 Claims, 6 Drawing Sheets US 6,900,557 BI
Sheet 1 of 6
May 31, 2005
U.S. Patent
to 14
CONTROL
DRIVER
FIG. 1
LOAD
MODULATOR 50:
CONTROL U.S. Patent May 31, 2005 Sheet 2 of 6 US 6,900,557 BI
2
POWER”
Az 20 " a R
CONTROL cd
AT 48
! | J
b 18
§ L
..(11 secondaries)