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参数资料
| 型号： | L6740L |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 模拟信号调理 |
| 英文描述： | SPECIALTY ANALOG CIRCUIT, PQFP48 |
| 封装： | 7 X 7 MM, 1 MM HEIGHT, HTQFP-48 |
| 文件页数： | 16/44页 |
| 文件大小： | 755K |
| 代理商： | L6740L |
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L6740L
Output voltage positioning
6
Output voltage positioning
Output voltage positioning is performed by selecting the controller operative-mode (SVI, PVI
and V_FIX) and by programming the droop function and offset to the reference of both the
sections (See Figure 9). The controller reads the current delivered by each section by
monitoring the voltage drop across the low-side MOSFET for NB section or DCR Inductors
for CORE section. The current (IDROOP / IDROOP_NB) sourced from the DROOP /
NB_DROOP pin, directly proportional to the read current, causes the related section output
voltage to vary according to the external RFB / RFB_NB resistor so implementing the desired
load-line effect. The current (IOS / IOS_NB) programmed through the OS / NB_OS pins is
sunk from the FB / NB_FB pins causing the output voltage to be offset according to the
resistance RFB / RFB_NB connected.
L6740L embeds a dual remote-sense buffer to sense remotely the regulated voltage of each
section without any additional external components. In this way, the output voltage
programmed is regulated compensating for board and socket losses. Keeping the sense
traces parallel and guarded by a power plane results in common mode coupling for any
picked-up noise.
Both DROOP and OFFSET function can be disabled: see Section 6.3 and Section 6.4 for
details about CORE section and Section 6.6 and Section 6.7 for details about NB section. In
case DROOP effect is not desired, the current information sourced from the DROOP pin
may be used to implement a Load Indicator as reported in Section 6.3 and Section 6.6.
Figure 9.
Voltage positioning
1.2V
ROS
OS
CORE_REFERENCE
FB
COMP
VSEN
FBG
RF
CF
RFB
To VDD_CORE
(Remote Sense)
I DR
OOP
-I
OS
I OS
DROOP
CORE Protection
Monitor
from DAC...
1.2V
ROS_NB
NB_OS
NB_REFERENCE
NB_FB
NB_COMP
NB_VSEN
NB_FBG
RF_NB
CF_NB
RFB_NB
To VDD_NB
(Remote Sense)
I DR
OOP_NB
I OS_NB
NB_DROOP
NB Protection
Monitor
from DAC...
CORE
SECTION
V
O
LT
A
GE
POSITIONING
NB
SECTION
V
O
LT
A
GE
POSITIONING
RFB_COMP
RFB_COMP_NB
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相关代理商/技术参数 |
参数描述 |
|---|---|
| L6740LTR | 功能描述:DC/DC 开关控制器 Hybrid controller 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 |
| L6741 | 功能描述:功率驱动器IC SnglPphase Dual MOSFET Driver 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 |
| L6741TR | 功能描述:功率驱动器IC SnglPphase Dual MOSFET Driver 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 |
| L6743 | 功能描述:功率驱动器IC SnglPphase Dual MOSFET Driver 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 |
| L6743_08 | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:High current MOSFET driver |
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