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参数资料
| 型号： | L6730DTR |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 稳压器 |
| 英文描述： | 20 A SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PDSO20 |
| 封装： | HTSSOP-20 |
| 文件页数： | 28/50页 |
| 文件大小： | 1486K |
| 代理商： | L6730DTR |
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Application details
L6730C - L6730D
34/50
6.5
Two quadrant or one quadrant operation mode (L6730C)
After the soft-start phase the L6730C can work in source only (one quadrant operation mode)
or in sink/source (two quadrant operation mode), depending on the setting of the multifunction
pin (see Chapter 5.10 on page 25). The choice of one or two quadrant operation mode is
related to the application. One quadrant operation mode permits to have a higher efficiency at
light load, because the converter works in discontinuous mode (see Figure 28.). Nevertheless
in some cases, in order to maintain a constant switching frequency, it’s preferable to work in two
quadrants, even at light load. In this way the reduction of the switching frequency due to the
pulse skipping is avoided. To parallel two or more modules is requested the one quadrant
operation in order not to have current sinking between different converters. Finally the two
quadrant operation allows faster recovers after negative load transient. For example, let’s
consider that the load current falls down from IOUT to 0A with a slew rate sufficiently greater
than L/VOUT (where L is the inductor value). Even considering that the converter reacts
instantaneously setting to 0% the duty-cycle, the energy *L*IOUT
2 stored in the inductor will be
transferred to the output capacitors, increasing the output voltage. If the converter can sink
current this overvoltage can be faster eliminated.
Figure 28. Efficiency in discontinuous-current-mode and continuous-current-mode.
EFFICIENCY: DCM vs. CCM
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0
0.2
0.4
0.6
0.8
1
1.2
1.4
1.6
1.8
2
OUTPUT CURRENT (A)
EF
F
.(
%
EFFICIENCY DCM
EFFICIENCY CCM
相关PDF资料 |
PDF描述 |
|---|---|
| L6730D | 20 A SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PDSO20 |
| L6730CQTR | 20 A SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, QCC24 |
| L6730CTR | 20 A SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PDSO20 |
| L6730 | 20 A SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PDSO20 |
| L6730B | 20 A SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PDSO20 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| L6730TR | 功能描述:DC/DC 开关控制器 Adjustable Step Down 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 |
| L6731B | 功能描述:开关变换器、稳压器与控制器 Adj. Step-Down w/ Synch Rectification 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 |
| L6731BTR | 功能描述:IC CTRLR ADJ STEP DOWN 16-TSSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - 专用型 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,000 系列:- 应用:电源，ICERA E400，E450 输入电压:4.1 V ~ 5.5 V 输出数:10 输出电压:可编程 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:42-WFBGA，WLCSP 供应商设备封装:42-WLP 包装:带卷 (TR) |
| L6731D | 功能描述:DC/DC 开关控制器 Adjustable Step Down 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 |
| L6731DTR | 功能描述:DC/DC 开关控制器 Adjustable Step Down 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 |
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