Back to results
US 6,646,469 B2Granted
High voltage level shifter via capacitors
AssigneeKoninklijke Philips Electronics N.V.
InventorLi Yushan
Life of this patent
Estimating the term…
Abstract
A driver circuit is disclosed for driving a half bridge driver or similar circuit. The driving circuit induced transient currents in two passive devices, and utilizes the transient currents to set or reset a latch at appropriate times required to properly drive a half bridge driver or similar type of circuit.
Claims10
A level shifting circuit comprising:
- plural passive devices, each device being arranged to induce a transient current at specified predetermined times;
- and
- a latch that is connected to said passive devices in a manner such that the induced currents set and reset said latch at appropriate predetermined times;
- wherein said plural passive devices comprise at least two capacitors, each capacitor having terminals;
- and
- wherein a terminal of a first of said capacitors is connected to a first driver, and a terminal of a second of said capacitors is connected to a second driver, and wherein said first driver outputs a signal that is inverted with respect to said output of said second driver.
3 more elements
A method of driving a half bridge driver comprising the steps of:
- inducing two transient currents in two passive devices, each of said currents being induced at a different time, and
- utilizing said induced transient currents to set and reset a latch at prescribed times;
- wherein said transient currents are induced by rapidly changing a voltage across a capacitor;
- and
- wherein the transient currents are induced via a periodic signal that is input to a first driver, and wherein an output of said first driver is input to a second driver.
2 more elements
Dependencies are inferred from the claim text.