Datasheet > iW3629

iW3629

更新时间： 2024-11-24 14:57:39

品牌	Logo	应用领域
瑞萨 - RENESAS		/
页数	文件大小	规格书
6页	500K
描述
Flickerless? Two-Stage Non-Dimmable Digital AC/DC SSL LED Driver for Commercial Lighting up to 120W

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iW3629 数据手册

iW3629

Two-Stage, Flickerless™ Digital Oﬀ-Line

LED Driver with High PF and Low THD

1 Description

The iW3629 is a high-performance AC/DC oﬀ-line digital power supply controller for LED luminaires up to 120W or

above. The two-stage design combines high power factor (PF > 0.95), low total harmonic distortion (THD <10%)

and negligible line frequency ripple (< 5%) to make the iW3629 ideal for high-power non-dimmable LED lamps and

luminaires.

The two-stage approach allows the ﬁrst-stage boost converter to convert the rectiﬁed AC voltage (90V_ACto 277V_AC)

to an intermediate voltage while correcting for power factor. The second-stage ﬂyback converter then provides the

constant current regulation to the LEDs. The combination of an active start-up circuit and fast yet smooth soft-start

for both boost and ﬂyback stages results in a start-up time (AC plug-in to 90% of set LED current) of less than a half

second and fast power factor settling time.

The iW3629 operates in a quasi-resonant mode to provide high eﬃciency and uses Dialog’s PrimAccurate™

advanced primary-side sensing technology to achieve excellent line and load regulation without secondary-feedback

components. And, by using Dialog’s Flickerless™ technology, virtually all ﬂicker is removed from the output. The

digital control algorithms used by the iW3629 maintain stability over all operating conditions without the need for any

external loop compensation components, minimizing the BOM cost.

2 Features

● Flickerless technology - removes virtually all ﬂicker

● Supports universal, 90V_AC-277V_ACinput voltage range

and output power up to 120W or above

● PrimAccurate primary-side sensing eliminates the

need for optocoupler feedback and simpliﬁes design

● Two-stage design (boost and ﬂyback)

● Tight LED current regulation (± 5%)

● Under 0.5s start-up time

High PF (> 0.95) and low THD (< 10%) over entire

input voltage range and 50%-100% load current

● Under 5% 100Hz/120Hz output current ripple

● Hot-plug LED module support

● Multiple protection features:

● Quasi-resonant control for both boost and ﬂyback

stages to achieve high eﬃciency

LED open circuit protection

● Over-temperature derating protection with external

NTC to program derating start temperature

Single-fault protection

Over-current protection

● Fast yet smooth boost start-up scheme to achieve

short PF settling time

LED short-circuit protection

● Fast line transient response ensures minimal bulk

voltage overshoot within the capacitor safety limit

Current sense-resistor-short-circuit protection

Input over-voltage and brown-out protection

● Small size design

Internal junction temperature-based over-

temperature protection

Small size input bulk capacitor

Small size output capacitor

Small transformer

3 Applications

● Non-dimmable LED lamps and luminaires

● Output power up to 120W or above

Product Summary

Rev. 1.2

06-Feb-2022

1 of 6

www.renesas.com

12 3 4 5 6

中文翻译

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与iW3629相关器件

型号	品牌	获取价格	描述	数据表
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
iW3631	RENESAS	获取价格	Flickerless? 0-10V Dimmable Two-Stage Digital AC/DC SSL LED Driver for Commercial Lighting
iW3631-00	DIALOG	获取价格	Two-Stage, Flickerlessâ¢ 0-10V Dimmable Digi
iW3631-01	DIALOG	获取价格	Two-Stage, Flickerlessâ¢ 0-10V Dimmable Digi
IW3636	DIALOG	获取价格	Single-Stage LED Driver with PFC
iW3636	RENESAS	获取价格	Low BOM Cost 0-10V Dimmable SSL LED Driver for Commercial Lighting up to 90W
iW3636-01	DIALOG	获取价格	Single-Stage LED Driver with PFC
iW3636-02	DIALOG	获取价格	Single-Stage LED Driver with PFC
iW3636-03	DIALOG	获取价格	Single-Stage LED Driver with PFC

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