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ML4824IP-1

更新时间： 2024-01-19 04:47:18
品牌 Logo 应用领域
MICRO-LINEAR 功率因数校正光电二极管控制器
页数 文件大小 规格书
16页 267K
描述
Power Factor Correction and PWM Controller Combo

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中文翻译

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ML4824IP-1 技术参数

是否无铅： 不含铅生命周期：Active
零件包装代码：DIP包装说明：DIP,
针数：16Reach Compliance Code：unknown
风险等级：5.33其他特性：CURRENT MODE CONTROL IS ALSO POSSIBLE
模拟集成电路 - 其他类型：POWER FACTOR CONTROLLER WITH POST REGULATOR控制模式：VOLTAGE-MODE
控制技术：PULSE WIDTH MODULATION最大输入电压：12.8 V
最小输入电压：11 V标称输入电压：11.8 V
JESD-30 代码：R-PDIP-T16JESD-609代码：e3
长度：19.05 mm湿度敏感等级：NOT APPLICABLE
功能数量：1端子数量：16
最高工作温度：85 °C最低工作温度：-40 °C
最大输出电流：0.5 A封装主体材料：PLASTIC/EPOXY
封装代码：DIP封装形状：RECTANGULAR
封装形式：IN-LINE峰值回流温度（摄氏度）：NOT APPLICABLE
认证状态：COMMERCIAL座面最大高度：4.32 mm
表面贴装：NO切换器配置：SINGLE
最大切换频率：250 kHz温度等级：INDUSTRIAL
端子面层：MATTE TIN端子形式：THROUGH-HOLE
端子节距：2.54 mm端子位置：DUAL
处于峰值回流温度下的最长时间：NOT SPECIFIED宽度：7.62 mm

ML4824IP-1 数据手册

 浏览型号ML4824IP-1的Datasheet PDF文件第2页浏览型号ML4824IP-1的Datasheet PDF文件第3页浏览型号ML4824IP-1的Datasheet PDF文件第4页浏览型号ML4824IP-1的Datasheet PDF文件第5页浏览型号ML4824IP-1的Datasheet PDF文件第6页浏览型号ML4824IP-1的Datasheet PDF文件第7页 
June 1998  
ML4824*  
Power Factor Correction and PWM Controller Combo  
GENERAL DESCRIPTION  
FEATURES  
The ML4824 is a controller for power factor corrected,  
switched mode power supplies. Power Factor Correction  
(PFC) allows the use of smaller, lower cost bulk capacitors,  
reduces power line loading and stress on the switching  
FETs, and results in a power supply that fully complies  
with IEC1000-2-3 specification. The ML4824 includes  
circuits for the implementation of a leading edge, average  
current, “boost” type power factor correction and a trailing  
edge, pulse width modulator (PWM).  
■ Internally synchronized PFC and PWM in one IC  
■ Low total harmonic distortion  
■ Reduces ripple current in the storage capacitor between  
the PFC and PWM sections  
■ Average current, continuous boost leading edge PFC  
■ Fast transconductance error amp for voltage loop  
The device is available in two versions; the ML4824-1  
(f  
PWM  
= f ) and the ML4824-2 (f  
= 2 x f ).  
■ High efficiency trailing edge PWM can be configured  
PFC  
PWM  
PFC  
Doubling the switching frequency of the PWM allows the  
user to design with smaller output components while  
maintaining the best operating frequency for the PFC. An  
over-voltage comparator shuts down the PFC section in the  
event of a sudden decrease in load. The PFC section also  
includes peak current limiting and input voltage brown-  
out protection. The PWM section can be operated in  
current or voltage mode at up to 250kHz and includes a  
duty cycle limit to prevent transformer saturation.  
for current mode or voltage mode operation  
■ Average line voltage compensation with brownout  
control  
■ PFC overvoltage comparator eliminates output  
“runaway” due to load removal  
■ Current fed gain modulator for improved noise immunity  
■ Overvoltage protection, UVLO, and soft start  
BLOCK DIAGRAM  
*Some Packages Are Obsolete  
16  
1
13  
POWER FACTOR CORRECTOR  
V
CC  
IEAO  
VEAO  
V
CCZ  
OVP  
V
V
REF  
VEA  
FB  
13.5V  
7.5V  
REFERENCE  
+
IEA  
14  
12  
3.5kΩ  
15  
–
+
–
2.7V  
–1V  
–
+
–
2.5V  
AC  
+
S
Q
I
2
4
3
+
–
GAIN  
V
R
S
Q
Q
RMS  
MODULATOR  
PFC OUT  
3.5kΩ  
PFC I  
LIMIT  
I
SENSE  
R
Q
RAMP 1  
OSCILLATOR  
7
8
x 2  
(-2 VERSION ONLY)  
RAMP 2  
DUTY CYCLE  
LIMIT  
8V  
–
+
V
1.25V  
DC  
6
5
9
PWM OUT  
V
S
Q
Q
CC  
11  
–
+
V
OK  
1V  
IN  
V
–
50µA  
8V  
FB  
SS  
–
+
R
2.5V  
+
DC I  
LIMIT  
DC I  
LIMIT  
V
UVLO  
CCZ  
PULSE WIDTH MODULATOR  
1
1234567...16

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