Datasheet > ISL1904EVAL2Z

ISL1904EVAL2Z

更新时间： 2024-10-01 01:18:03

品牌	Logo	应用领域
英特矽尔 - INTERSIL		功率因数校正
页数	文件大小	规格书
21页	623K
描述
Dimmable AC Mains LED Driver with PFC and Primary Side Regulation

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中文翻译

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ISL1904EVAL2Z 数据手册

Dimmable AC Mains LED Driver with PFC and Primary

Side Regulation

ISL1904

Features

The ISL1904 is a high-performance, critical conduction mode

(CrCM), flyback controller used for single-stage conversion of

the AC mains to a constant current source with power factor

correction (PFC). The controller regulates the output current by

monitoring the primary side switching current so the feedback

signal does not cross the isolation barrier. Operation in CrCM

allows near zero-voltage quasi-resonant switching (ZVS) for

improved efficiency while maximizing magnetic core

utilization. The ISL1904 LED driver provides all of the features

required for high-performance dimmable LED ballast designs

and supports AC or DC input, isolated or non-isolated flyback

and boost topologies. This advanced BiCMOS controller

features all of the functions required to design low cost low

parts count LED driver.

• Excellent LED current regulation over line, load, and

temperature

• 0 - 100% dimming with leading-edge (triac) and

trailing-edge dimmers

• Power factor correction for up to 0.995 power factor and

less than 20% harmonic content

• Critical conduction mode (CrCM) operation for

quasi-resonant high efficiency performance

• Supports universal AC mains input

• Configurable for PWM or DC current dimming control of

LEDs

• Monitors FET switching current for load regulation

• Supports isolated and non-isolated boost and flyback

topologies

• Closed loop soft-start for no overshoot

• OFFREF feature to set dimming off-point to improve fixture

performance matching

• -40°C to +125°C operation

• Pb-free (RoHS compliant)

Applications

• Industrial and commercial LED lighting

• Retrofit LED lamps with triac dimming

• Universal AC mains input LED retrofit lamps

• AC or DC Input LED ballasts

850

800

750

VDD

CS+

DHC

12 AC

OUT

700

ISL1904

4LEDs

EMI Filter

VERR

DELADJ

5LEDs

650

GND

6LEDs

VREF

600

RAMP

IOUT

AC Mains

550

180 190 200 210 220 230 240 250 260 270

LINE VOLTAGE (V

RMS

)

FIGURE 1A. TYPICAL APPLICATION

FIGURE 1B. LED CURRENT vs LINE VOLTAGE

FIGURE 1. TYPICAL APPLICATION PERFORMANCE

September 20, 2012

FN8286.1

CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.

Intersil (and design) is a trademark owned by Intersil Corporation or one of its subsidiaries.

All other trademarks mentioned are the property of their respective owners.

12 3 4 5 6 7...21

中文翻译

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与ISL1904EVAL2Z相关器件

型号	品牌	获取价格	描述	数据表
ISL1904FAZ	RENESAS	获取价格	Dimmable AC Mains LED Driver with PFC and Primary Side Regulation
ISL1904FAZ	INTERSIL	获取价格	Dimmable AC Mains LED Driver with PFC and Primary Side Regulation
ISL21007	INTERSIL	获取价格	Precision, Low Noise FGA⑩ Voltage References
ISL21007_0712	INTERSIL	获取价格	Precision, Low Noise FGA⑩Voltage References
ISL21007_11	INTERSIL	获取价格	Precision, Low Noise FGA? Voltage References
ISL21007BFB812Z	INTERSIL	获取价格	Precision, Low Noise FGA⑩ Voltage References
ISL21007BFB812Z	RENESAS	获取价格	1-OUTPUT THREE TERM VOLTAGE REFERENCE, 1.25V, PDSO8, ROHS COMPLIANT, MS-012AA, SOIC-8
ISL21007BFB812ZT	RENESAS	获取价格	1-OUTPUT THREE TERM VOLTAGE REFERENCE, 1.25V, PDSO8, ROHS COMPLIANT, MS-012AA, SOIC-8
ISL21007BFB812Z-TK	ROCHESTER	获取价格	1-OUTPUT THREE TERM VOLTAGE REFERENCE, 1.25 V, PDSO8, ROHS COMPLIANT, PLASTIC, MS-012AA, S
ISL21007BFB820Z	INTERSIL	获取价格	5-Channel Integrated LCD Supply

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