The invention provides a light-emitting element drive control device and a light-emitting element drive circuit device. A light emitting element drive control device (100) includes: a drive logic unit (113) performing drive control on switching output stages (N1, D1, L1) to reduce an input voltage (VIN) to an output voltage (VOUT) and supply the voltage to a light emitting element; a charge pump power supply unit (alpha) that generates a boost voltage (CP) higher than the input voltage (VIN); and a current detection comparator (114) that receives the supply of the boost voltage (CP) and the output voltage (VOUT) as a power supply voltage, and generates control signals (SET, RST) for driving the logic unit (113) by directly comparing a current detection signal (Vsns) corresponding to an inductor current (IL) of the switching output stage with a peak detection value (Vsnspk) and a valley detection value (Vsnsbt).
提供一种发光元件驱动控制装置、发光元件驱动电路装置。发光元件驱动控制装置(100)包括:驱动逻辑单元(113),对开关输出级(N1、D1、L1)执行驱动控制,以将输入电压(VIN)降低到输出电压(VOUT)并将其提供给发光元件;生成高于输入电压(VIN)的升压电压(CP)的电荷泵电源单元(α);以及电流检测比较器(114),其将升压电压(CP)和输出电压(VOUT)的提供接收作为电源电压,并通过直接将与开关输出级的电感器电流(IL)相对应的电流检测信号(Vsns)与峰值检测值(Vsns_pk)和谷值检测值(Vsns_bt)进行比较,生成用于驱动逻辑单元(113)的控制信号(SET,RST)。
Light-emitting element drive control device and light-emitting element drive circuit device
发光元件驱动控制装置、发光元件驱动电路装置
2023-04-21
Patent
Electronic Resource
Chinese
IPC: | H05B ELECTRIC HEATING , Elektrische Heizung / 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 / H02M APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS , Anlagen zur Umformung von Wechselstrom in Wechselstrom, von Wechselstrom in Gleichstrom oder umgekehrt, oder von Gleichstrom in Gleichstrom und zur Verwendung in Netzen oder ähnlichen Stromversorgungssystemen |
LIGHT-EMITTING ELEMENT DRIVE CONTROL DEVICE AND LIGHT-EMITTING ELEMENT DRIVE CIRCUIT DEVICE
European Patent Office | 2019
|European Patent Office | 2017
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