Datasheet > iW3636-03

iW3636-03

更新时间： 2024-11-10 01:10:35

品牌	Logo	应用领域
DIALOG		功率因数校正
页数	文件大小	规格书
6页	432K
描述
Single-Stage LED Driver with PFC

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iW3636-03 数据手册

iW3636

Single-Stage LED Driver with PFC

Supports Wide Range of Dimming Interfaces

1 Description

The iW3636 is a high-performance, single-stage AC/DC power controller for PWM dimmable LED driver with power

factor (PF) correction. It supports most commonly used isolated and non-isolated ﬂyback and buck-boost topologies.

The device operates in constant on-time mode to achieve high power factor (> 0.9) across a wide load range. It uses

Dialog’s PrimAccurate™ advanced primary-side sensing technology to achieve excellent output current regulation over

line and load variation without the need for secondary feedback components. It also eliminates the need for external loop

compensation while maintaining stability over all operating conditions.

The iW3636 offers a 1% to 100% dimming range and provides a dedicated PWM dimming input pin that supports a

wide variety of dimming application interfaces such as wireless modules, MCUs or 0-10V interfaces. When working with

Dialog’s secondary-side SSL PWM signal generator IC, the iW339, the iW3636 adopts a proprietary technique to support

accurate dimming by eliminating the impact from the non-ideal characteristics of optocouplers. In addition, the iW3636

accepts a secondary PWM or analog input to allow maximum output current conﬁguration control.

Dialog’s innovative proprietary technology maximizes the iW3636 performance in an SOIC-8 package. It provides two

multi-function pins to conﬁgure IC functions such as the dimming curve and minimum dimming level. The iW3636 also

enables the active start-up scheme to achieve the shortest possible start-up time without sacriﬁcing active efﬁciency. By

adaptively controlling the maximum operating frequency at different dimming levels, it helps eliminate audible noise and

achieve low standby power consumption.

2 Features

● Conﬁgurable minimum dimming setting: dim-to-off,

● Universal AC input (90V_AC- 305V_AC) or DC input with

1%, 5% or 10%

output power up to 90W

● Wide V_CCoperating range from 7.5V to 30V

● Primary-side control achieves very tight line and load

regulation (±3%)

● Built-in over-temperature protection or by external NTC

● Conﬁgurable dimming curve: linear or logarithmic

● PF > 0.9 and THD < 20% across wide output power

range

● Built-in soft-start achieves fast and smooth start-up for

● Dual dimming interfaces

all different operating conditions

● Supports fully isolated 0-10V dimming with Dialog’s

● Active start-up scheme enables fastest possible start-up

iW339 interface controller

● Built-in single-point fault protection features: output

open, output over-voltage, output short and input

voltage under-voltage protections

● Low standby power

● Wide dimming range 1% - 100%

● Light-off mode with soft-off feature and conﬁgurable

● Conﬁgurable 72kHz or 90kHz PWM switching

voltage regulation value

frequency with quasi-resonant operation

3 Applications

● Intelligent and wireless LED lighting

● Dimming LED ballast

13-Dec-2017

Product Summary

Rev. 0.6 Preliminary

www.dialog-semiconductor.com

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