Title:
DC-DC CONVERTER
Document Type and Number:
WIPO Patent Application WO2004004104
Kind Code:
A3
Abstract:
A DC-DC converter comprises a switch (S1) which periodically connects an inductor (L) to a DC-input voltage (Vi) during an on-period (Ton) of a period time (Tp), an operating frequency (fo) of the DC-DC converter is the inverse of the period time (Tp). An output (O1) of the DC-DC converter is coupled to the inductor (L) to supply an output voltage (Vo). A controller (CO) controls the operating frequency (fo) of the DC-DC converter to be substantially proportional to the output voltage (Vo) to obtain a substantially constant average duration of the on-period (Ton) as function of the output voltage (Vo).
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Inventors:
HALBERSTADT JOHAN C (NL)
DEGEN PETER T J (NL)
MOBERS ANTONIUS M G (NL)
DEGEN PETER T J (NL)
MOBERS ANTONIUS M G (NL)
Application Number:
PCT/IB2003/002731
Publication Date:
March 11, 2004
Filing Date:
June 12, 2003
Export Citation:
Assignee:
KONINKL PHILIPS ELECTRONICS NV (NL)
HALBERSTADT JOHAN C (NL)
DEGEN PETER T J (NL)
MOBERS ANTONIUS M G (NL)
HALBERSTADT JOHAN C (NL)
DEGEN PETER T J (NL)
MOBERS ANTONIUS M G (NL)
International Classes:
H02M3/155; H02M3/156; (IPC1-7): H02M3/156
Foreign References:
| US5515257A | 1996-05-07 | |||
| US5568044A | 1996-10-22 | |||
| US5747976A | 1998-05-05 |
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