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ML4826CP-1 PDF预览

ML4826CP-1

更新时间: 2024-01-26 07:47:42
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 299K
描述
PFC and Dual Output PWM Controller Combo

ML4826CP-1 技术参数

是否Rohs认证: 不符合生命周期:Obsolete
零件包装代码:DIP包装说明:DIP, DIP20,.3
针数:20Reach Compliance Code:compliant
ECCN代码:EAR99HTS代码:8542.39.00.01
风险等级:5.19模拟集成电路 - 其他类型:POWER FACTOR CONTROLLER WITH POST REGULATOR
控制模式:CURRENT-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:11.2 VJESD-30 代码:R-PDIP-T20
JESD-609代码:e0长度:25.97 mm
功能数量:1端子数量:20
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:DIP封装等效代码:DIP20,.3
封装形状:RECTANGULAR封装形式:IN-LINE
峰值回流温度(摄氏度):NOT SPECIFIED认证状态:Not Qualified
座面最大高度:4.32 mm子类别:Switching Regulator or Controllers
表面贴装:NO切换器配置:BOOST
最大切换频率:250 kHz技术:BIPOLAR
温度等级:COMMERCIAL端子面层:Tin/Lead (Sn/Pb)
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 mmBase Number Matches:1

ML4826CP-1 数据手册

 浏览型号ML4826CP-1的Datasheet PDF文件第2页浏览型号ML4826CP-1的Datasheet PDF文件第3页浏览型号ML4826CP-1的Datasheet PDF文件第4页浏览型号ML4826CP-1的Datasheet PDF文件第5页浏览型号ML4826CP-1的Datasheet PDF文件第6页浏览型号ML4826CP-1的Datasheet PDF文件第7页 
June 1997  
ML4826*  
PFC and Dual Output PWM Controller Combo  
GENERAL DESCRIPTION  
FEATURES  
The ML4826 is a high power controller for power factor  
corrected, switched mode power supplies. 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 IEC1000-3-2  
specifications. The ML4826 includes circuits for the  
implementation of a leading edge, average current “boost”  
type power factor correction and a trailing edge, pulse  
width modulator (PWM) with dual totem-pole outputs.  
Internally synchronized PFC and PWM in one IC  
Low total harmonic distortion  
Reduced ripple current in the storage capacitor  
between the PFC and PWM sections  
Average current, continuous boost, leading edge PFC  
High efficiency trailing edge PWM with dual  
The device is available in two versions; the ML4826-1  
totem-pole outputs  
(f  
= f ) and the ML4826-2 (f  
= 2 x f ).  
PWM  
PFC  
PWM PFC  
Doubling the switching frequency of the PWM allows the  
user to design with smaller output components while  
maintaining the optimum 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.  
Average line voltage compensation with brown-out  
control  
PFC overvoltage comparator eliminates output  
“runaway” due to load removal  
Current-fed multiplier for improved noise immunity  
Overvoltage protection, UVLO, and soft start  
BLOCK DIAGRAM  
* This Part Is End Of Life As Of August 1, 2000  
20  
11  
1
17  
POWER FACTOR CORRECTOR  
V
CC  
AGND  
IEAO  
VEAO  
V
CCZ  
OVP  
V
V
REF  
VEA  
FB  
13.5V  
7.5V  
REFERENCE  
+
IEA  
18  
15  
3.5k  
19  
-
-
2.7V  
-1V  
-
+
-
2.5V  
AC  
+
+
S
Q
I
2
4
3
+
-
8V  
GAIN  
V
I
R
S
Q
Q
RMS  
MODULATOR  
PFC OUT  
3.5kΩ  
PFC I  
LIMIT  
SENSE  
RAMP 1  
R
Q
8
7
R C  
T T  
OSCILLATOR  
V
CC2  
x 2  
(-2 VERSION ONLY)  
RAMP 2  
16  
14  
S
Q
DUTY CYCLE  
LIMIT  
9
PWM 2  
8V  
T
Q
-
V
PGND  
1.5V  
DC  
6
5
+
V
S
Q
Q
CC  
V
CC2  
-
V
OK  
1V  
IN  
PWM 1  
PGND  
V
-
50µA  
8V  
FB  
SS  
+
-
13  
12  
R
2.5V  
+
+
DC I  
LIMIT  
V
DC I  
LIMIT  
10  
UVLO  
CCZ  
PULSE WIDTH MODULATOR  
1

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