參數(shù)資料
型號: L6599D
廠商: STMICROELECTRONICS
元件分類: 穩(wěn)壓器
英文描述: 0.8 A SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, PDSO16
封裝: LEAD FREE, SOP-16
文件頁數(shù): 21/36頁
文件大小: 636K
代理商: L6599D
Application information
L6599
28/36
Figure 33. Line sensing function: internal block diagram and timing diagram
With reference to Figure 33 the following relationships can be established for the ON
(VinON) and OFF (VinOFF) thresholds of the input voltage:
which, solved for RH and RL, yield:
While the line undervoltage is active there is no PWM activity, thus the VCC voltage (if not
supplied by another source) continuously oscillates between the start-up and the UVLO
thresholds, as shown in the timing diagram of Figure 33.
As an additional measure of safety (e.g. in case the low-side resistor is open or missing, or
in non-power factor corrected systems in case of abnormally high input voltage) if the
Vin
ON
1.25
R
H
----------------------------------
15 10
6
1.25
R
H
-----------
+
=
Vin
OFF
1.25
R
H
-------------------------------------
1.25
R
H
-----------
=
R
H
Vin
ON
Vin
OFF
15 10
6
------------------------------------------
=
R
L
R
H
1.25
Vin
OFF
1.25
-------------------------------------
=
相關(guān)PDF資料
PDF描述
L6599N 0.8 A SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, PDIP16
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L6610N 6-CHANNEL POWER SUPPLY SUPPORT CKT, PDIP24
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
L6599DTR 功能描述:軟開關(guān) PWM 控制器 Hi Vltg resonant Controller RoHS:否 制造商:Fairchild Semiconductor 輸出端數(shù)量: 輸出電流: 開關(guān)頻率: 工作電源電壓:30 V 電源電流: 最大工作溫度:+ 105 C 最小工作溫度:- 40 C 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Reel
L6599N 功能描述:軟開關(guān) PWM 控制器 Hi Vltg resonant Controller RoHS:否 制造商:Fairchild Semiconductor 輸出端數(shù)量: 輸出電流: 開關(guān)頻率: 工作電源電壓:30 V 電源電流: 最大工作溫度:+ 105 C 最小工作溫度:- 40 C 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Reel
L6599NR 功能描述:電壓模式 PWM 控制器 HV resonant CNTRL RoHS:否 制造商:Texas Instruments 輸出端數(shù)量:1 拓撲結(jié)構(gòu):Buck 輸出電壓:34 V 輸出電流: 開關(guān)頻率: 工作電源電壓:4.5 V to 5.5 V 電源電流:600 uA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝 / 箱體:WSON-8 封裝:Reel
L6599TR 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:High-voltage resonant controller
L65B 制造商:Electro-Mech 功能描述: