Datasheet > LNK460K

LNK460K

更新时间： 2022-04-26 23:52:07

品牌	Logo	应用领域
帕沃英蒂格盛 - POWERINT		驱动器三端双向交流开关功率因数校正
页数	文件大小	规格书
20页	2510K
描述
LED Driver IC with TRIAC Dimming Single Stage PFC and Constant Current Control for Non Isolated Applications

阅读下载

获取价格

数据手册

如果您发现信息不准确，欢迎纠错

LNK460K 数据手册

LNK454/456-458/460

V_FB

V_FB(

)

Phase

Angle

Phase

Angle

0°

180°

0°

180°

V_LINE

V_TRIAC

Phase

Angle

Phase

Angle

0°

Phase

Angle

Conduction

Angle

Conduction

Angle

Phase

Angle

Leading Edge

TRIAC Dimmers

Trailing Edge

Dimmers

PI-5894a-091010

Figure 6. Feedback Voltage vs. Phase Angle Dimming Characteristics.

TRIAC (Phase-Controlled) Dimming

( OS) threshold is exceeded, V_FBand the output LED current

are reduced until a second phase angle threshold is reached.

At this point, with the TRIAC conduction angle being very

limited, the IC runs open loop at constant frequency and duty

cycle ( OL region) and the integrated power MOSFET processes

as much power as the heavily chopped input voltage will allow

creating a light output that is deeply dimmed.

The LinkSwitch-PL integrates several features to improve

dimming range and reduce external circuit complexity when

using a phase-controlled TRIAC dimmer. The output LED

current is controlled by the FEEDBACK pin voltage which

changes proportionally to the TRIAC dimmer conduction angle.

When the conduction angle decreases, the voltage at the

FEEDBACK pin decreases causing the average LED current to

decrease.

The 520 mV clamping feedback threshold is also linearly reduced

during dimming to control LED current ripple.

The FEEDBACK pin reference voltage adjustment is initiated at

approximately 25% of the AC line half-cycle duration. When this

Rev. C 10/11

www.powerint.com

1 2 345 6 7...20

下载PDF

与LNK460K相关器件

型号	品牌	描述	获取价格	数据表
LNK460KG-TL	POWERINT	LED Driver IC with TRIAC Dimming, Single-Stage PFC and Constant Current Control for Non-Is	获取价格
LNK460V	POWERINT	LED Driver IC with TRIAC Dimming, Single-Stage PFC and Constant Current Control for Non-Is	获取价格
LNK460VG	ETC	TRIAC Dimmable, Power Factor Corrected, 7.2 W Non-Isolated LED Driver Using LinkSwitchTM-P	获取价格
LNK460VG-TL	POWERINT	LED Driver IC with TRIAC Dimming, Single-Stage PFC and Constant Current Control for Non-Is	获取价格
LNK500	POWERINT	Energy Efficient, CV or CV/CC Switcher for Very Low Cost Adapters and Chargers	获取价格
LNK500G	POWERINT	Energy Efficient, CV or CV/CC Switcher for Very Low Cost Adapters and Chargers	获取价格