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)： 17/47頁
文件大?。?/td> 623K
代理商： L6706
Output current monitoring (IMON)
L6706
24/47
Doc ID 15698 Rev 2
10
Output current monitoring (IMON)
The device sources from IMON pin a current proportional to the load current (the sourced
current is a copy of droop current).
Connect IMON pin through a RIMON resistor to remote ground (GND Core) to implement a
load indicator, as shown in Figure 9.
As INTEL VR11.1 specification required, on the IMON voltage as to be added a small
positive offset to avoid under-estimation of the output load (due to elements accuracy).
The voltage across IMON pin is given by the following formula:
where:
The IMON pin voltage is clamped to 1.100 V max to preserve the CPU from excessive
voltages as INTEL VR11.1 specification required.
Figure 9.
Output monitoring connection (left) and thermal compensation (right)
Current sense element (DCR inductor) has a non-negligible temperature variation. As a
consequence, the sensed current is subjected to a measurement error that causes the
monitoring voltage to vary accordingly.
To recover from this temperature related error, NTC resistor can be added into monitoring
network, as shown in Figure 9.
The monitoring voltage is then driven by the following relationship (neglecting the offset term
for simplicity):
where now the RIMON is the equivalent monitoring resistor and it depends on the
temperature through NTC resistor.
Considering the relationships between IDROOP and the IOUT, the voltage results:
V
MONITORING
R
IMON
R
OS
R
IMON
R
OS
+
----------------------------------- I
DROOP
V
REF
R
IMON
R
IMON
R
OS
+
-----------------------------------
+
=
I
DROOP
DCR
Rg
------------- I
OUT
=
I
DROOP
IMON
To GND_core
(Remote Sense)
NTC
R1
R3
R2
CIMON
VREF = +3V3
RIMON_OS
RIMON
To CPU
I
DROOP
IMON
To GND_core
(Remote Sense)
CIMON
VREF = +3V3
RIMON_OS
RIMON
To CPU
V
MONITORING
R
IMON
R
OS
R
IMON
R
OS
+
----------------------------------- I
DROOP
R
IMON
R
OS
R
IMON
R
OS
+
-----------------------------------
DCR
Rg
------------- I
OUT
==
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相關代理商/技術(shù)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(qū)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(qū)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(qū)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(qū)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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