Datasheet > IW3620

IW3620

更新时间： 2024-11-10 01:22:15

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描述
Digital PWM Current-Mode Controller for AC/DC LED Driver

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IW3620 数据手册

iW3620

Digital PWM Current-Mode Controller for AC/DC LED Driver

1.0 Features

2.0 Description

● Primary-side feedback eliminates opto-isolators and The iW3620 is a high performance AC/DC ofﬂine LED driver

simpliﬁes design

which uses digital control technology to build peak current

mode PWM ﬂyback power supplies. The device operates in

quasi-resonant mode at heavy load to provide high efﬁciency

along with a number of key built-in protection features while

minimizing the external component count, simplifying EMI

design and lowering the total bill of material cost. The

iW3620 removes the need for secondary feedback circuitry

while achieving excellent line and load regulation. It also

eliminates the need for loop compensation components while

maintaining stability over all operating conditions. Pulse-by-

● Quasi-resonant operation for highest overall efﬁciency

●

EZ-EMI ^®design to easily meet global EMI standards

● Up to 130 kHz switching frequency enables small

adapter size

● Very tight LED constant current regulation

● No external compensation components required

● Built-in output constant-current control with primary-side pulse waveform analysis allows for a loop response that is

feedback for LED driver.

● Low start-up current (10 µA typical)

● Built-in soft start

much faster than traditional solutions, resulting in improved

dynamic load response. The built-in current limit function

enables optimized transformer design in universal off-line

applications over a wide input voltage range.

● Built-in short circuit protection and output overvoltage

3.0 Applications

● LED lighting

protection

● Current sense resistor short protection

● Overtemperature Protection

● Open circuit protection

● Universal input range from 85 V_acto 264 V_ac

● Single-fault protection

● Small input bulk capacitor

● Long MTBF

● High efﬁciency

OUT

RTN

OUTPUT

SENSE

GND

Optional

NTC

Thermistor

iW3620

Figure 3.1 : Typical Application Circuit

Rev. 1.8

iW3620

FebRuaRy 1, 2012

Page 1

12 3 4 5 6 7...21

中文翻译

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与IW3620相关器件

型号	品牌	获取价格	描述	数据表
IW3620-00	DIALOG	获取价格	Digital PWM Current-Mode Controller for AC/DC LED Driver
iW3622	RENESAS	获取价格	Single-Stage, 45W, Non-Dimmable Offline Flyback LED Driver with High PF and Low Ripple
iW3623	RENESAS	获取价格	Flickerless?, Non-Dimmable 45W Solid-State Lighting LED Driver with High PF (>0.95), Low T
iW3625	RENESAS	获取价格	Single-Stage, 45W, Non-Dimmable Offline Buck SSL LED Driver with High Power Factor and Low
iW3626	RENESAS	获取价格	Single-Stage, 10W Offline SSL LED Driver with High Power Factor and Low Ripple
iW3627	RENESAS	获取价格	Digital Constant-Voltage Offline PWM Controller with Power Factor Correction for Applicati
iW3628	RENESAS	获取价格	Single-Stage, 20W Non-Dimmable Offline SSL LED Driver with High Power Factor and Low Rippl
iW3629	RENESAS	获取价格	Flickerless? Two-Stage Non-Dimmable Digital AC/DC SSL LED Driver for Commercial Lighting u
iW3630	RENESAS	获取价格	Flickerless?, 0-10V Dimmable Solid-State Lighting LED Driver with High PF (>0.95)
IW3631	DIALOG	获取价格	Two-Stage, Flickerlessâ¢ 0-10V Dimmable Digi

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