參數(shù)資料
型號： L6706
廠商： STMICROELECTRONICS
元件分類： 穩(wěn)壓器
英文描述： SWITCHING REGULATOR, QCC40
封裝： 6 X 6 MM, ROHS COMPLIANT, VFQFPN-40
文件頁數(shù)： 27/47頁
文件大小： 623K
代理商： L6706
L6706
Soft-start
Doc ID 15698 Rev 2
33/47
Note:
Connecting SSOSC pin to SGND through only the RFLIM_SS resistor (blue one network in
Figure 14), the soft-start time depends on the FLIMIT selected.
In this case use the following relationship to select FLIMIT and as a consequence the soft-
start time:
Figure 16.
Soft-start time (TSS) vs FLIMIT when using RFLIM_SS resistor versus SGND
14.1
Low-side-less startup
In order to avoid any kind of negative undershoot on the load side during startup, L6706
performs a special sequence in enabling LS driver to switch: during the soft-start phase, the
LS driver results disabled (LS = OFF) until the HS starts to switch. This avoid the dangerous
negative spike on the output voltage that can happen if starting over a pre-biased output
This particular feature of the device masks the LS turn-on only from the control loop point of
view: protections are still allowed to turn-ON the LS MOSFET in case of over voltage if
needed.
Figure 17.
Low-side-less startup comparison.WITH LS-Less startup
R
FLIM
SS
–
k
Ω
[]
2.11 10
4
F
LIMIT kHz
[]
---------------------------------
=
T
D2 μs
[]
5.275 10
5
F
LIMIT kHz
[]
---------------------------------
=
VOUT
LGATE
WITHOUT LS-Less startup
WITH LS-Less startup
相關PDF資料
PDF描述
L6717 DUAL SWITCHING CONTROLLER, 575 kHz SWITCHING FREQ-MAX, QCC48
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相關代理商/技術參數(shù)
參數(shù)描述
L6706TR 功能描述:DC/DC 開關控制器 VR11.1 SINGLE PHASE CNTRL W/INT DRI RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風格: 封裝 / 箱體:CPAK
L6709 功能描述:功率驅動器IC 6-Bit Dual Ph Contlr RoHS:否 制造商:Micrel 產(chǎn)品:MOSFET Gate Drivers 類型:Low Cost High or Low Side MOSFET Driver 上升時間: 下降時間: 電源電壓-最大:30 V 電源電壓-最小:2.75 V 電源電流: 最大功率耗散: 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube
L6709TR 功能描述:功率驅動器IC 6-Bit Dual Ph Contlr RoHS:否 制造商:Micrel 產(chǎn)品:MOSFET Gate Drivers 類型:Low Cost High or Low Side MOSFET Driver 上升時間: 下降時間: 電源電壓-最大:30 V 電源電壓-最小:2.75 V 電源電流: 最大功率耗散: 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube
L6710 功能描述:功率驅動器IC 6-Bit Dual Ph Contlr RoHS:否 制造商:Micrel 產(chǎn)品:MOSFET Gate Drivers 類型:Low Cost High or Low Side MOSFET Driver 上升時間: 下降時間: 電源電壓-最大:30 V 電源電壓-最小:2.75 V 電源電流: 最大功率耗散: 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube
L6710TR 功能描述:功率驅動器IC 6-Bit Dual Ph Contlr RoHS:否 制造商:Micrel 產(chǎn)品:MOSFET Gate Drivers 類型:Low Cost High or Low Side MOSFET Driver 上升時間: 下降時間: 電源電壓-最大:30 V 電源電壓-最小:2.75 V 電源電流: 最大功率耗散: 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube
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