- 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： | 42/57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页当前第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
L6716
System control loop compensation
Doc ID 14521 Rev 3
47/57
22
System control loop compensation
The control loop is composed by the current sharing control loop (see Figure 9) and the
average current mode control loop. Each loop gives, with a proper gain, the correction to the
PWM in order to minimize the error in its regulation: the current sharing control loop
equalize the currents in the inductors while the average current mode control loop fixes the
output voltage equal to the reference programmed by VID. Figure 28 shows the block
diagram of the system control loop.
the FB pin flows into RFB implementing the dependence of the output voltage from the read
current.
Figure 28.
Main control loop
The system can be modeled with an equivalent single phase converter which only difference
is the equivalent inductor L/N (where each phase has an L inductor). The control loop gain
results (obtained opening the loop after the COMP pin):
Where:
DCR is the inductor parasitic resistance;
is the equivalent output resistance determined by the droop function;
ZP(s) is the impedance resulting by the parallel of the output capacitor (and its ESR) and the
applied load RO
ZF(s) is the compensation network impedance
ZL(s) is the parallel of the N inductor impedance
A(s) is the error amplifier gain
L3
L2
L1
PWM3
PWM2
PWM1
3 / 5
VREF
ERROR AMPLIFIER
COMP
FB
ZF(s)
ZFB(s)
IDROOP
COUT
ROUT
2 / 5
CURRENT SHARING
DUTY CYCLE
CORRECTION
IINFO1
IINFO3
IINFO2
L4
PWM4
2 / 5
IINFO4
(IINFO2,IINFO4 only applied when using 3-PHASE or 4-PHASE Operation)
G
LOOP s
()
PWM Z
F s
() R
DROOP
Z
P s
()
+
()
Z
P s
() Z
L s
()
+
[]
Z
F s
()
As
()
--------------
1
As
()
------------
+
R
FB
+
-------------------------------------------------------------------------------------------------------------------
–
=
R
DROOP
DCR
Rg
------------- R
FB
=
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。