- 您现在的位置：买卖IC网 > PDF目录67754 > L6706 (STMICROELECTRONICS) SWITCHING REGULATOR, QCC40 PDF资料下载
参数资料
| 型号： | L6706 |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 稳压器 |
| 英文描述： | SWITCHING REGULATOR, QCC40 |
| 封装： | 6 X 6 MM, ROHS COMPLIANT, VFQFPN-40 |
| 文件页数： | 14/47页 |
| 文件大小： | 623K |
| 代理商： | L6706 |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页当前第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页第38页第39页第40页第41页第42页第43页第44页第45页第46页第47页
L6706
Voltage positioning
Doc ID 15698 Rev 2
21/47
where:
Offset resistor can be designed by considering the following relationship (RFB is fixed by the
Droop effect):
Offset automatically given by the DAC selection differs from the offset implemented through
the OFFSET pin: the built-in feature is trimmed in production and assures ±0.5% error over
load and line variations
Figure 7.
Voltage positioning with positive offset
8.2
Droop function
This method “recovers” part of the drop due to the output capacitor ESR in the load
transient, introducing a dependence of the output voltage on the load current: a static error
proportional to the output current causes the output voltage to vary according to the sensed
current.
As shown in Figure 6, the ESR drop is present in any case, but using the droop function the
total deviation of the output voltage is minimized. Moreover, more and more high-
performance CPUs require precise load-line regulation to perform in the proper way.
DROOP function is not then required only to optimize the output filter, but also becomes a
requirement of the load.
The device forces a current IDROOP, proportional to the read current, into the feedback RFB
resistor implementing the load regulation dependence. Since IDROOP depends on the
current information, the output characteristic vs. load current is then given by (neglecting the
OFFSET voltage term):
Where DCR is the inductor parasitic resistance (or sense resistor when used) and IOUT is
the output current of the system. The whole power supply can be then represented by a
V
OUT IOUT
()
V
PROG
R
FB
I
DROOP IOUT
()
1.240V
R
OFFSET
------------------------
–
–
=
V
OS
R
FB
1.240V
R
OFFSET
------------------------
=
R
OFFSET
R
FB
1.240V
V
OS
-------------------
=
COMP
To GND_core
(Remote Sense)
ERROR AMPLIFIER
FB
FBG
RF
CF
VSEN
I
DROOP
To VCC_core
(Remote Sense)
RFB
VPROG
VREF
FBG
GND DROP
RECOVERY
CP
I
OFFSET
1.240V
ROFFSET
OFFSET
I OFFSET
V
OUT
V
PROG
R
FB
I
DROOP
–
V
REF
R
FB
DCR
Rg
------------- I
OUT
–
V
PROG
R
DROOP
I
OUT
–
==
=
相关PDF资料 |
PDF描述 |
|---|---|
| L6717 | DUAL SWITCHING CONTROLLER, 575 kHz SWITCHING FREQ-MAX, QCC48 |
| L6728HTR | SWITCHING CONTROLLER, 330 kHz SWITCHING FREQ-MAX, PDSO10 |
| L6728H | SWITCHING CONTROLLER, 330 kHz SWITCHING FREQ-MAX, PDSO10 |
| L6728 | 1.5 A SWITCHING CONTROLLER, 330 kHz SWITCHING FREQ-MAX, DSO10 |
| L6728TR | 1.5 A SWITCHING CONTROLLER, 330 kHz SWITCHING FREQ-MAX, DSO10 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| L6706TR | 功能描述:DC/DC 开关控制器 VR11.1 SINGLE PHASE CNTRL W/INT DRI RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
| L6709 | 功能描述:功率驱动器IC 6-Bit Dual Ph Contlr RoHS:否 制造商:Micrel 产品:MOSFET Gate Drivers 类型:Low Cost High or Low Side MOSFET Driver 上升时间: 下降时间: 电源电压-最大:30 V 电源电压-最小:2.75 V 电源电流: 最大功率耗散: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 封装:Tube |
| L6709TR | 功能描述:功率驱动器IC 6-Bit Dual Ph Contlr RoHS:否 制造商:Micrel 产品:MOSFET Gate Drivers 类型:Low Cost High or Low Side MOSFET Driver 上升时间: 下降时间: 电源电压-最大:30 V 电源电压-最小:2.75 V 电源电流: 最大功率耗散: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 封装:Tube |
| L6710 | 功能描述:功率驱动器IC 6-Bit Dual Ph Contlr RoHS:否 制造商:Micrel 产品:MOSFET Gate Drivers 类型:Low Cost High or Low Side MOSFET Driver 上升时间: 下降时间: 电源电压-最大:30 V 电源电压-最小:2.75 V 电源电流: 最大功率耗散: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 封装:Tube |
| L6710TR | 功能描述:功率驱动器IC 6-Bit Dual Ph Contlr RoHS:否 制造商:Micrel 产品:MOSFET Gate Drivers 类型:Low Cost High or Low Side MOSFET Driver 上升时间: 下降时间: 电源电压-最大:30 V 电源电压-最小:2.75 V 电源电流: 最大功率耗散: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 封装:Tube |
发布紧急采购，3分钟左右您将得到回复。