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參數(shù)資料
| 型號： | L6599N |
| 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, PDIP16 |
| 封裝： | LEAD FREE, PLASTIC, DIP-16 |
| 文件頁數(shù)： | 21/36頁 |
| 文件大小： | 636K |
| 代理商： | L6599N |
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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
–
-------------------------------------
=
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 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?fù)浣Y(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: |
| L65B3C881-00000-000 | 制造商:Carling Technologies 功能描述:L-SERIES ROCKER SWITCH - Bulk |
| L65D1CNN1-00000-000 | 制造商:Carling Technologies 功能描述:L-SERIES ROCKER SWITCH - Bulk |
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