This disclosure is directed to techniques for efficiently driving multiple light emitting diode (LED) strings from a single regulated source. The techniques of this disclosure may utilize a switched capacitor DC-to-DC converter between the regulated source and the LED string. The switched capacitor (SC) converter may have multiple gain levels to efficiently match the drive voltage from the regulated source to the LED string voltage for each particular LED string. In some examples, the SC converter may have multiple gain levels such that the SC converter may deliver an LED string voltage that is approximately a multiple of the number of LEDs in the LED string. Using capacitor components in an SC converter may have the advantages of small size and low cost.
Switched capacitor LED matrix driver
2017-02-21
Patent
Electronic Resource
English
IPC: | B60Q ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL , Anordnung von Signal- oder Beleuchtungsvorrichtungen, deren Einbau oder Halterung oder deren Schaltkreise bei Fahrzeugen allgemein / H05B ELECTRIC HEATING , Elektrische Heizung |
Switched-Capacitor Voltage Multiplier
NTRS | 1991
|Switched-Capacitor Cell Balancing: A Fresh Perspective
SAE Technical Papers | 2014
|British Library Online Contents | 2011
|British Library Online Contents | 2011
|