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Patent Searching and Data


Title:
LASER DIODE DRIVE CIRCUIT
Document Type and Number:
WIPO Patent Application WO/2021/065097
Kind Code:
A1
Abstract:
A laser diode drive circuit (10) is provided with: at least one laser diode (LD1, LD2); a driving switching element (Swd1, Swd2) for switching between a state in which the laser diode (LD1, LD2) is supplied with current and a state in which the laser diode (LD1, LD2) is not supplied with current; a driving capacitor (Cd) for supplying current to the laser diode (LD1, LD2); a drive circuit (Dr1, Dr2); and a boot-strap circuit (Cr1, Cr2) for supplying voltage to the drive circuit (Dr1, Dr2). The boot-strap circuit (Cr1, Cr2) includes a capacitor (Ca1, Ca2) and an inductor (La1, La2) for preventing a current that flows through the capacitor (Ca1, Ca2) during charging of the capacitor (Ca1, Ca2) from flowing through the laser diode (LD1, LD2), which is connected in parallel to the inductor (La1, La2).

Inventors:
MATSUOKA TAKAHIRO (JP)
TAKIMOTO NAOMI (JP)
Application Number:
PCT/JP2020/023943
Publication Date:
April 08, 2021
Filing Date:
June 18, 2020
Export Citation:
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Assignee:
MURATA MANUFACTURING CO (JP)
International Classes:
H01S5/042; G01S7/484
Domestic Patent References:
WO2018066612A12018-04-12
Foreign References:
US20170085057A12017-03-23
JP2016127214A2016-07-11
US9368936B12016-06-14
JP2009170870A2009-07-30
US20030016711A12003-01-23
JPS6234454U1987-02-28
US20200178361A12020-06-04
Attorney, Agent or Firm:
FUKAMI PATENT OFFICE, P.C. (JP)
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