Datasheet > iW1676

iW1676

更新时间： 2023-12-20 18:45:10

品牌	Logo	应用领域
瑞萨 - RENESAS		/
页数	文件大小	规格书
16页	974K
描述
PrimAccurate? Off-Line Digital PWM Controller in a SOT-23 Package

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

iW1676 数据手册

iW1676

Low Power Oﬀ-Line Digital Green-Mode PWM Controller

1 Description

The iW1676 is a high performance AC/DC power supply controller which uses digital control technology to build peak

current mode PWM ﬂyback power supplies. The device directly drives a power BJT and operates in quasi-resonant

mode 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 iW1676 removes the need

for secondary feedback circuit 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-pulse waveform analysis

allows for a loop response that is much faster than traditional solutions, resulting in improved dynamic load response,

for both one-time and repetitive load transients. The built-in power limit function enables optimized transformer design

in universal oﬀ-line applications and allows for a wide input voltage range.

Dialog’s innovative proprietary technology ensures that with low system cost, power supplies built with the iW1676 can

achieve both highest average eﬃciency, less than 30mW no-load power consumption and fast dynamic load response

in a compact form factor.

2 Features

● No-load power consumption < 30mW at 230V_ACwith

● Quasi-resonant operation for highest overall eﬃciency

● Direct drive of low-cost BJT switch

typical application circuit (5-star rating)

● Fast dynamic load response for both one-time and

● Dynamic base current control

repetitive load transients

● No external compensation components required

● Very tight constant voltage and constant current

regulation over entire operating range

● Complies with EPA 2.0 energy-eﬃciency speciﬁcations

with ample margin

● Primary-side feedback eliminates optoisolators and

simpliﬁes design

● Built-in soft start

● 64kHz PWM switching frequency

● Built-in short circuit protection and output overvoltage

protection

● Ultra-low start-up current (1.7μA typical)

● EZ-EMI^TMdesign enhances manufacturability

● Intrinsically low common mode noise

● Built-in current sense resistor short circuit protection

● No audible noise over entire operating range

● Adaptive multi-mode PWM/PFM control improves

eﬃciency

3 Applications

● Compact low power AC/DC adapter/chargers for

cell phones, PDAs, digital still cameras

● Linear AC/DC replacement

18-Jan-2022

Datasheet

Rev. 1.8

1 of 16

www.renesas.com

12 3 4 5 6 7...16

下载PDF

与iW1676相关器件

型号	品牌	描述	获取价格	数据表
IW1677	DIALOG	Low-Power Off-Line Digital Green-Mode PWM Controller	获取价格
iW1677	RENESAS	PrimAccurate? Off-Line Digital PWM Controller in a SOT-23 Package	获取价格
iW1677-00	DIALOG	Low-Power Off-Line Digital Green-Mode PWM Controller	获取价格
iW1677-01	DIALOG	Low-Power Off-Line Digital Green-Mode PWM Controller	获取价格
iW1677-03	DIALOG	Low-Power Off-Line Digital Green-Mode PWM Controller	获取价格
iW1677-05	DIALOG	Low-Power Off-Line Digital Green-Mode PWM Controller	获取价格