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US 12,744,360 B2Granted
Laser diode driver circuit
AssigneeMurata Manufacturing Co., Ltd.
InventorShota Ando
Life of this patent
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Abstract
A laser diode driver circuit is provided that has a loop including a laser diode, a drive capacitor for storing drive charge, and a switch element, a first inductor coupled in series with the laser diode, a parallel capacitor coupled in parallel with a series circuit composed of the laser diode and the first inductor, and a first diode coupled in parallel with the series circuit in opposite polarity to the laser diode.
Claims8
A laser diode driver circuit comprising:
- a loop including a laser diode, a drive capacitor configured to store a drive charge, and a switch element;
- a first inductor coupled in series with the laser diode;
- a parallel capacitor coupled in parallel with a series circuit that includes the laser diode and the first inductor;
- and
- a first diode coupled in parallel with the series circuit and in opposite polarity to the laser diode,
- wherein a pair of power supply terminals of a direct current (DC) power source are coupled to respective sides of the switch element, and
- R2LD1<4L1/C2,
- where C2 is a capacitance of the parallel capacitor, L1 is an inductance of the first inductor, and RLD1 is a resistance component of the laser diode.
5 more elements
Dependencies are inferred from the claim text.