Title:
SAWTOOTH WAVE GENERATION CIRCUIT
Document Type and Number:
WIPO Patent Application WO/2012/101683
Kind Code:
A1
Abstract:
Provided is a sawtooth wave generation circuit that uses one output capacitor, has a stable amplitude and wherein the gradient during a sudden change in voltage can easily generate a steep sawtooth wave. The sawtooth wave generation circuit has: a switch circuit (11) for switching between a first connection state wherein a current of a current source (9) flows from a first terminal (3a) to a second terminal (3b) of an output capacitor (3), and a second connection state wherein the current of the current source (9) flows from the second terminal (3b) to the first terminal (3a) of the output capacitor (3); and a switch control circuit (4) that, in a case where an output voltage (VOUT) has reached a predetermined threshold (VH) with respect to an intermediate voltage (VM) in each connection state of the switch circuit (11), thereafter switches the switch circuit (11) to an other connection state in at least some periods of predetermined periods thereafter.
Inventors:
HATANAKA TADATA
ISHII TAKUYA
ISHII TAKUYA
Application Number:
PCT/JP2011/002792
Publication Date:
August 02, 2012
Filing Date:
May 19, 2011
Export Citation:
Assignee:
PANASONIC CORP (JP)
HATANAKA TADATA
ISHII TAKUYA
HATANAKA TADATA
ISHII TAKUYA
International Classes:
H03K4/50; H03K4/08
Foreign References:
| JP2004282352A | 2004-10-07 | |||
| JP2004507142A | 2004-03-04 |
Attorney, Agent or Firm:
PATENT CORPORATE BODY ARCO PATENT OFFICE (JP)
Patent business corporation Owner old patent firm (JP)
Patent business corporation Owner old patent firm (JP)
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