- 您现在的位置：买卖IC网 > PDF目录79745 > L6566A (STMICROELECTRONICS) 0.8 A POWER FACTOR CONTROLLER WITH POST REGULATOR, 300 kHz SWITCHING FREQ-MAX, PDSO16 PDF资料下载
参数资料
| 型号： | L6566A |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 稳压器 |
| 英文描述： | 0.8 A POWER FACTOR CONTROLLER WITH POST REGULATOR, 300 kHz SWITCHING FREQ-MAX, PDSO16 |
| 封装： | LEAD FREE, SOP-16 |
| 文件页数： | 30/51页 |
| 文件大小： | 646K |
| 代理商： | L6566A |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页当前第30页第31页第32页第33页第34页第35页第36页第37页第38页第39页第40页第41页第42页第43页第44页第45页第46页第47页第48页第49页第50页第51页
Application information
L6566A
36/51
Figure 23.
OVP function: timing diagram
The ZCD pin will be connected to the auxiliary winding through a resistor divider RZ1, RZ2
to:
Equation 10
where VoutOVP is the output voltage value that is to activate the protection, Ns the turn
number of the secondary winding and Naux the turn number of the auxiliary winding. The
value of RZ1 will be such that the current sourced by the ZCD pin be within the rated
capability of the internal clamp:
Equation 11
where Vinmax is the maximum dc input voltage and Ns the turn number of the primary
for additional details.
To reduce sensitivity to noise and prevent the latch from being erroneously activated, first
the OVP comparator is active only for a small time window (typically, 0.5 s) starting 2 s
after MOSFET’s turn-off, to reject the voltage spike associated to the positive-going edges
of the voltage across the auxiliary winding Vaux; second, to stop the L6566A the OVP
comparator must be triggered for four consecutive switching cycles. A counter, which is
reset every time the OVP comparator is not triggered in one switching cycle, is provided to
this purpose.
t
GD
(pin 4)
Vaux
5V
t
STROBE
t
COUNTER
RESET
t
COUNTER
STATUS
t
0
ZCD
(pin 11)
2s
0.5 s
OVP
t
FAULT
00
0
→11 →22 →00 →11 →22 →33 →4
0
NORMAL OPERATION
TEMPORARY DISTURBANCE
FEEDBACK LOOP FAILURE
t
COUT
Vcc_PFC
(pin 6)
t
Naux
Ns
Vout
5
k
OVP
OVP =
max
3
1
Z
Vin
Np
Naux
10
3
1
R
≥
相关PDF资料 |
PDF描述 |
|---|---|
| L6712AQTR | 2 A SWITCHING CONTROLLER, QCC36 |
| LNK604GG-TL | SPECIALTY ANALOG CIRCUIT, PDSO8 |
| LM385DR-2-5 | 1-OUTPUT TWO TERM VOLTAGE REFERENCE, 2.5 V, PDSO8 |
| LM4041DIM-ADJ | 1-OUTPUT TWO TERM VOLTAGE REFERENCE, 1.233 V, PDSO8 |
| LS4601-9RD1TB1 | 1-OUTPUT 100 W AC-DC PWR FACTOR CORR MODULE |
相关代理商/技术参数 |
参数描述 |
|---|---|
| L6566A_08 | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:Multi-mode controller for SMPS with PFC front-end |
| L6566ATR | 功能描述:开关变换器、稳压器与控制器 Multi Mode PWM Controller RoHS:否 制造商:Texas Instruments 输出电压:1.2 V to 10 V 输出电流:300 mA 输出功率: 输入电压:3 V to 17 V 开关频率:1 MHz 工作温度范围: 安装风格:SMD/SMT 封装 / 箱体:WSON-8 封装:Reel |
| L6566B | 功能描述:开关变换器、稳压器与控制器 Multi Mode PWM Controller RoHS:否 制造商:Texas Instruments 输出电压:1.2 V to 10 V 输出电流:300 mA 输出功率: 输入电压:3 V to 17 V 开关频率:1 MHz 工作温度范围: 安装风格:SMD/SMT 封装 / 箱体:WSON-8 封装:Reel |
| L6566B_08 | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:Multi-mode controller for SMPS |
| L6566BH | 功能描述:电流型 PWM 控制器 Multimode Controller SMPS 800V <3mA RoHS:否 制造商:Texas Instruments 开关频率:27 KHz 上升时间: 下降时间: 工作电源电压:6 V to 15 V 工作电源电流:1.5 mA 输出端数量:1 最大工作温度:+ 105 C 安装风格:SMD/SMT 封装 / 箱体:TSSOP-14 |
发布紧急采购，3分钟左右您将得到回复。