- 您现在的位置：买卖IC网 > PDF目录69003 > L6716 (STMICROELECTRONICS) DUAL SWITCHING CONTROLLER, 225 kHz SWITCHING FREQ-MAX, QCC48 PDF资料下载
参数资料
| 型号： | L6716 |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 稳压器 |
| 英文描述： | DUAL SWITCHING CONTROLLER, 225 kHz SWITCHING FREQ-MAX, QCC48 |
| 封装： | 7 X 7 MM, 1 MM HEIGHT, ROHS COMPLIANT, VFQFP-48 |
| 文件页数： | 21/57页 |
| 文件大小： | 829K |
| 代理商： | L6716 |
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页第14页第15页第16页第17页第18页第19页第20页当前第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页第48页第49页第50页第51页第52页第53页第54页第55页第56页第57页
Droop thermal compensation
L6716
28/57
Doc ID 14521 Rev 3
12
Droop thermal compensation
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
regulated output voltage to vary accordingly (when droop function is implemented).
To recover from this temperature related error, NTC resistor can be added into feedback
compensation network, as shown in Figure 13.
The output voltage is then driven by the following relationship (neglecting the OFFSET
voltage term):
where RFB is the equivalent feedback resistor and it depends on the temperature through
NTC resistor.
Considering the relationships between IDROOP and the IOUT, the output voltage results:
where T is the temperature.
If the inductor temperature increases the DCR inductor increases and NTC resistor
decreases. As a consequence the equivalent RFB resistor decreases keeping constant the
output voltage respect to temperature variation.
NTC resistor must be placed as close as possible to the sense elements (phase inductor).
Figure 13.
NTC connections for DC load line thermal compensation
V
OUT
V
PROG
R
FB
I
DROOP
()
–
=
V
OUT
TI
OUT
(,
)
[]
V
PROG
R
FB T
[] DCR T
[]
Rg
---------------------- I
OUT
–
=
COMP
To GND_core
(Remote Sense)
ERROR AMPLIFIER
FB
FBG
I
DROOP
To VCC_core
(Remote Sense)
VPROG
VREF
FBG
GND DROP
RECOVERY
I
OS
CP
RF
CF
RFB
NTC
RFB3
RFB2
RFB1
相关PDF资料 |
PDF描述 |
|---|---|
| L6722 | SWITCHING CONTROLLER, 300 kHz SWITCHING FREQ-MAX, QCC36 |
| L6722TR | SWITCHING CONTROLLER, 300 kHz SWITCHING FREQ-MAX, QCC36 |
| L9407F | SPECIALTY ANALOG CIRCUIT, PSFM8 |
| L9942 | STEPPER MOTOR CONTROLLER, PDSO36 |
| LA5681FN | SWITCHING CONTROLLER, 520 kHz SWITCHING FREQ-MAX, QCC48 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| L6716TR | 功能描述:开关变换器、稳压器与控制器 2/3/4 phase CNTRL Embedded Drivers RoHS:否 制造商:Texas Instruments 输出电压:1.2 V to 10 V 输出电流:300 mA 输出功率: 输入电压:3 V to 17 V 开关频率:1 MHz 工作温度范围: 安装风格:SMD/SMT 封装 / 箱体:WSON-8 封装:Reel |
| L6717 | 制造商:STMicroelectronics 功能描述:High-Efficiency Hybrid AM2r2 Controller 48-Pin VFQFPN Tray 制造商:STMicroelectronics 功能描述:HANDHELD & COMPUTER PM - Trays 制造商:STMicroelectronics 功能描述:High EFF Hybrid CTRL I2C Embedded Driver |
| L6717A | 制造商:STMicroelectronics 功能描述:CPU Power Supply Controller Tray 制造商:STMicroelectronics 功能描述:HANDHELD & COMPUTER PM - Trays 制造商:STMicroelectronics 功能描述:High EFF Hybrid CTRL I2C Embedded Driver |
| L6717ATR | 制造商:STMicroelectronics 功能描述:CPU Power Supply Controller T/R 制造商:STMicroelectronics 功能描述:HANDHELD & COMPUTER PM - Tape and Reel 制造商:STMicroelectronics 功能描述:High EFF Hybrid CTRL I2C Embedded Driver |
| L6717TR | 功能描述:开关变换器、稳压器与控制器 High-Efficienc AM2r2 Hybrid Controller RoHS:否 制造商:Texas Instruments 输出电压:1.2 V to 10 V 输出电流:300 mA 输出功率: 输入电压:3 V to 17 V 开关频率:1 MHz 工作温度范围: 安装风格:SMD/SMT 封装 / 箱体:WSON-8 封装:Reel |
发布紧急采购，3分钟左右您将得到回复。