參數(shù)資料
型號(hào)： L6599
廠商： 意法半導(dǎo)體
英文描述： High-voltage resonant controller
中文描述： 高壓諧振控制器
文件頁數(shù)： 30/36頁
文件大?。?/td> 591K
代理商： L6599
Application information
L6599
30/36
This concern applies to converters designed with a high resonance frequency (indicatively,
> 150 kHz), so that they run at high frequency also at full load. Otherwise, the converter will
run at high frequency only at light load, where the current flowing in the MOSFETs of the
half-bridge leg is lower, so that, generally, an r
(DS)ON
rise is not an issue. However, it is wise
to check this point anyway and the following equation is useful to compute the drop on the
bootstrap driver:
where Q
g
is the gate charge of the external power MOS, r
(DS)ON
is the on-resistance of the
bootstrap DMOS (150 , typ.) and T
charge
is the ON-time of the bootstrap driver, which
equals about half the switching period minus the dead time T
D
. For example, using a
MOSFET with a total gate charge of 30nC, the drop on the bootstrap driver is about 3V at a
switching frequency of 200kHz:
If a significant drop on the bootstrap driver is an issue, an external ultra-fast diode can be
used, thus saving the drop on the r
(DS)ON
of the internal DMOS.
V
Drop
I
Ch
e
arg
r
DS
(
)
ON
V
F
Q
T
Ch
e
arg
--------------------
R
DS
(
)
ON
V
F
+
=
+
=
V
Drop
10
0.3
–
9
–
2.5
10
6
–
------------------------------------------------------------
150
0.6
2.7V
=
+
=
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
L6599_0807 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:High-voltage resonant controller
L6599A 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Improved high-voltage resonant controller
L6599AD 功能描述:電壓模式 PWM 控制器 Hi-Volt Resonant Controller 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
L6599ADTR 功能描述:電壓模式 PWM 控制器 Hi-Volt resonant controller 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
L6599AFD 功能描述:Power Supply Controller Resonant Converter Controller 16-SO 制造商:stmicroelectronics 系列:- 包裝:管件 零件狀態(tài):有效 應(yīng)用:諧振轉(zhuǎn)換器控制器 電壓 - 輸入:- 電壓 - 電源:8.85 V ~ 16 V 電流 - 電源:3.5mA 工作溫度:-50°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:16-SOIC（0.154"，3.90mm 寬） 供應(yīng)商器件封裝:16-SO 標(biāo)準(zhǔn)包裝:50
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