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ML4824CS-2 PDF预览

ML4824CS-2

更新时间: 2024-02-23 21:17:31
品牌 Logo 应用领域
飞兆/仙童 - FAIRCHILD 稳压器开关式稳压器或控制器电源电路开关式控制器功率因数校正
页数 文件大小 规格书
16页 152K
描述
Power Factor Correction and PWM Controller Combo

ML4824CS-2 技术参数

是否Rohs认证:符合生命周期:Obsolete
零件包装代码:SOIC包装说明:PLASTIC, SOIC-16
针数:16Reach Compliance Code:compliant
风险等级:5.16Is Samacsys:N
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 VJESD-30 代码:R-PDSO-G16
JESD-609代码:e3/e4长度:10.34 mm
湿度敏感等级:3功能数量:1
端子数量:16最高工作温度:70 °C
最低工作温度:最大输出电流:0.5 A
封装主体材料:PLASTIC/EPOXY封装代码:SOP
封装形状:RECTANGULAR封装形式:SMALL OUTLINE
峰值回流温度(摄氏度):260认证状态:Not Qualified
座面最大高度:2.72 mm表面贴装:YES
切换器配置:SINGLE最大切换频率:250 kHz
温度等级:COMMERCIAL端子面层:MATTE TIN/NICKEL PALLADIUM GOLD
端子形式:GULL WING端子节距:1.27 mm
端子位置:DUAL处于峰值回流温度下的最长时间:NOT SPECIFIED
宽度:7.52 mmBase Number Matches:1

ML4824CS-2 数据手册

 浏览型号ML4824CS-2的Datasheet PDF文件第2页浏览型号ML4824CS-2的Datasheet PDF文件第3页浏览型号ML4824CS-2的Datasheet PDF文件第4页浏览型号ML4824CS-2的Datasheet PDF文件第5页浏览型号ML4824CS-2的Datasheet PDF文件第6页浏览型号ML4824CS-2的Datasheet PDF文件第7页 
December 2000  
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  
= f ) and the ML4824-2 (f  
= 2 x f ).  
High efficiency trailing edge PWM can be configured  
PWM  
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  
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  
3.5k  
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
12  
SENSE  
R
Q
RAMP 1  
RAMP 2  
OSCILLATOR  
7
8
x 2  
(-2 VERSION ONLY)  
DUTY CYCLE  
LIMIT  
8V  
+
V
1.25V  
DC  
6
5
9
PWM OUT  
V
S
Q
Q
CC  
11  
+
V
OK  
IN  
V
50µA  
8V  
FB  
SS  
1V  
+
R
2.5V  
+
DC I  
LIMIT  
DC I  
LIMIT  
V
UVLO  
CCZ  
PULSE WIDTH MODULATOR  
REV. 1.01 12/7/2000  

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