- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄383237 > L6566B (意法半導(dǎo)體) Multi-mode controller for SMPS PDF資料下載
參數(shù)資料
| 型號： | L6566B |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | Multi-mode controller for SMPS |
| 中文描述： | 多模式開關(guān)電源控制器 |
| 文件頁數(shù)： | 23/51頁 |
| 文件大?。?/td> | 401K |
| 代理商： | L6566B |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁當(dāng)前第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁
L6566B
Application information
23/51
start-up, at the end of the soft-start phase the output voltage of the converter must meet the
condition:
Equation 4
where Ns is the turn number of the secondary winding, Naux the turn number of the
auxiliary winding and I
ZCD
the maximum pull-up current (130
μ
A).
The operation described so far under different operating conditions for the converter is
illustrated in the timing diagrams of
Figure 10
.
If the FF option is selected the operation will be exactly equal to that of a standard current-
mode PWM controller. It will work at a frequency fsw = fosc; both DCM and CCM
transformer's operation are possible, depending on the operating conditions (input voltage
and output load) and on the design of the power stage. The MOSFET is turned on at the
beginning of each oscillator cycle and is turned off as the voltage on the current sense pin
reaches an internal reference set by the Line Feedforward block. The maximum duty cycle is
limited at 70% minimum. The signal on the ZCD pin in this case is used only for detecting
feedback loop failures (see
Section 5.11: OVP block on page 35
).
ZCD
1
Z
I
R
Naux
Ns
Vout
>
Figure 10. Operation of ZCD, triggering and oscillator blocks (QR option active)
a) full load
GD
(pin 4)
ZCD
blanking
time
ZCD
(pin 11)
Oscillator
ramp
PWM latch
Set
PWM latch
Reset
ON-enable
Arm/Trigger
50 mV
100 mV
armed
trigger
b) light load
ZCD
blanking
time
PWM latch
Set
PWM latch
Reset
ON-enable
Arm/Trigger
50 mV
100 mV
Oscillator
ramp
GD
(pin 4)
ZCD
(pin 11)
c) start-up
ZCD
blanking
time
PWM latch
Set
PWM latch
Reset
ON-enable
Arm/Trigger
50 mV
100 mV
Oscillator
ramp
GD
(pin 4)
ZCD
(pin 11)
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| L6566BTR | Multi-mode controller for SMPS |
| L6567 | HIGH VOLTAGE DRIVER FOR CFL |
| L6567D | HIGH VOLTAGE DRIVER FOR CFL |
| L6571B | High Voltage Half Bridge Driver with Oscillator(帶晶振的高電壓半橋驅(qū)動器) |
| L6585D | PFC and Ballast Control IC |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| L6566B_08 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Multi-mode controller for SMPS |
| L6566BH | 功能描述:電流型 PWM 控制器 Multimode Controller SMPS 800V <3mA RoHS:否 制造商:Texas Instruments 開關(guān)頻率:27 KHz 上升時間: 下降時間: 工作電源電壓:6 V to 15 V 工作電源電流:1.5 mA 輸出端數(shù)量:1 最大工作溫度:+ 105 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TSSOP-14 |
| L6566BHTR | 功能描述:電流型 PWM 控制器 MULTIMODE CONTROLLER SMPS 8V 3 mA RoHS:否 制造商:Texas Instruments 開關(guān)頻率:27 KHz 上升時間: 下降時間: 工作電源電壓:6 V to 15 V 工作電源電流:1.5 mA 輸出端數(shù)量:1 最大工作溫度:+ 105 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TSSOP-14 |
| L6566BTR | 功能描述:電流型 PWM 控制器 MultiMode Controller for SMPS RoHS:否 制造商:Texas Instruments 開關(guān)頻率:27 KHz 上升時間: 下降時間: 工作電源電壓:6 V to 15 V 工作電源電流:1.5 mA 輸出端數(shù)量:1 最大工作溫度:+ 105 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TSSOP-14 |
| L6566BTR-CUT TAPE | 制造商:ST 功能描述:L6566B Series 23 V 4.6 mA SMPS Multi-Mode Controller Surface Mount - SOIC-16N |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。