Driver circuit and method for providing a pulse
A driver circuit may include a first inductor with a first terminal coupled to a first voltage terminal and a first switch with a first and a second terminal. The first terminal of the first switch may be coupled to a second terminal of the first inductor via a first node and the second terminal of the first switch may be coupled to a second voltage terminal. Moreover, the driver circuit may include a diode with a first terminal coupled to the first node, an output terminal, and a first capacitor with a first electrode coupled to a second terminal of the diode and a second electrode coupled to the output terminal.
1. A driver circuit comprising:
a first inductor comprising a first terminal coupled to a first voltage terminal;
a first switch comprising a first terminal and a second terminal, wherein the first terminal of the first switch is coupled to a second terminal of the first inductor via a first node and the second terminal of the first switch is coupled to a second voltage terminal;
a diode comprising a first terminal coupled to the first node;
an output terminal;
a first capacitor comprising a first electrode coupled to a second terminal of the diode and a second electrode coupled to the output terminal; and
a control circuit coupled to a control terminal of the first switch and configured to set the first switch in a conducting state during a control duration which depends on at least one signal of a pulse-width-modulated signal and a trigger signal.
2. The driver circuit of claim 1 ,
wherein the driver circuit further comprises a second capacitor with a first electrode and a second electrode, wherein the first electrode of the second capacitor is coupled to the first terminal of the diode and the second electrode of the second capacitor is coupled to a third voltage terminal.
3. The driver circuit of claim 1 ,
wherein the driver circuit further comprises a further inductor that couples the first terminal of the diode to the first node.
4. The driver circuit of claim 1 ,
wherein the driver circuit further comprises an additional inductor that couples the second terminal of the diode to the first electrode of the first capacitor.
5. The driver circuit of claim 1 , wherein the driver circuit further comprises a parallel resistor connected in parallel to the first capacitor.
6. A method for providing a pulse, wherein the method comprises:
setting a first switch into a conducting state, wherein the first switch couples a second terminal of a first inductor to a second voltage terminal; and wherein a first terminal of the first inductor is coupled to a first voltage terminal; and
setting the first switch into a non-conducting state, wherein the second terminal of the first inductor is coupled via a diode to a first electrode of a first capacitor and a second electrode of the first capacitor is coupled to an output terminal at which an output voltage with a pulse is provided; and
setting the first switch into a conducting state during a control duration which depends on at least one signal of a pulse-width-modulated signal and a trigger signal.
7. The method of claim 6 ,
wherein a second switch couples the second electrode of the first capacitor to a fourth voltage terminal and is set into a conducting state after a peak of the pulse of the output voltage.
8. The method of claim 6 ,
wherein the output voltage is applied to a first number N of lasers.
9. The method of claim 8 ,
wherein the first number N of lasers are attached to a laser pad to which a reference potential is provided.
10. A driver circuit comprising:
a first inductor comprising a first terminal coupled to a first voltage terminal;
a first switch comprising a first terminal and a second terminal, wherein the first terminal of the first switch is coupled to a second terminal of the first inductor via a first node and the second terminal of the first switch is coupled to a second voltage terminal;
a diode comprising a first terminal coupled to the first node;
an output terminal;
a first capacitor comprising a first electrode coupled to a second terminal of the diode and a second electrode coupled to the output terminal;
a second capacitor with a first electrode and a second electrode, wherein the first electrode of the second capacitor is coupled to the first terminal of the diode and the second electrode of the second capacitor is coupled to a third voltage terminal; and
a second switch with a first terminal and a second terminal, wherein the first terminal of the second switch is coupled to the second electrode of the first capacitor and the second terminal of the second switch is coupled to a fourth voltage terminal.
11. The driver circuit of claim 10 , wherein the driver circuit further comprises a parallel resistor connected in parallel to the first capacitor.
12. The driver circuit of claim 10 , wherein the driver circuit further comprises a DC/DC converter coupled on its output side to at least one of the first terminal, the second terminal, and the fourth voltage terminal.
13. The driver circuit of claim 12 ,
wherein the DC/DC converter is configured to provide at least one of a first supply voltage at the first voltage terminal, a second supply voltage at the second voltage terminal, and a fourth supply voltage at the fourth voltage terminal such that a value of the fourth supply voltage is higher than a value of the first supply voltage and a value of the first supply voltage is higher than a value of the second supply voltage.
14. An optical circuit comprising:
the driver circuit of claim 10 ; and
a first number N of lasers that couple the output terminal to a fifth voltage terminal.