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參數(shù)資料
| 型號(hào)： | L6714 |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | SWITCHING CONTROLLER, 170 kHz SWITCHING FREQ-MAX, PQFP64 |
| 封裝： | 10 X 10 MM, LEAD FREE, TQFP-64 |
| 文件頁數(shù)： | 20/70頁 |
| 文件大?。?/td> | 694K |
| 代理商： | L6714 |
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L6714
Device description
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Device description
L6714 is four-phase PWM controller with embedded high current drivers that provides
complete control logic and protections for a high performance step-down DC-DC voltage
regulator optimized for advanced microprocessor power supply. Multi phase buck is the
simplest and most cost-effective topology employable to satisfy the increasing current
demand of newer microprocessors and modern high current VRM modules. It allows
distributing equally load and power between the phases using smaller, cheaper and most
common external power MOSFET and inductors. Moreover, thanks to the equal phase shift
between each phase, the input and output capacitor count results in being reduced. Phase
interleaving causes in fact input RMS current and output ripple voltage reduction and show
an effective output switching frequency increase: the 150kHz free-running frequency per
phase, externally adjustable through a resistor, results multiplied on the output by the
number of phases.
L6714 permits easy and flexible system design by allowing current reading across either
inductor or low side MOSFET in fully differential mode simply selecting the desired way
through apposite pin. In both cases, also a sense resistor in series to the related element
can be considered to improve reading precision. The current information read corrects the
PWM output in order to equalize the average current carried by each phase limiting the error
at ±3% over static and dynamic conditions unless considering the sensing element spread.
The controller includes multiple DACs, selectable through an apposite pin, allowing
compatibility with both Intel VR10,VR11 and AMD 6BIT processors specifications, also
performing D-VID transitions accordingly.
Low-Side-Less start-up allows soft start over pre-biased output avoiding dangerous current
return through the main inductors as well as negative spike at the load side.
L6714 provides programmable Over-Voltage protection to protect the load from dangerous
over stress. It can be externally set to a fixed voltage through an apposite resistor, or it can
be set internally, latching immediately by turning ON the lower driver and driving high the
FAULT pin. Furthermore, preliminary OVP protection also allows the device to protect load
from dangerous OVP when VCC is not above the UVLO threshold.
The Over-Current protection provided, with an OC threshold for each phase, causes the
device to enter in constant current mode until the latched UVP.
L6714 provides system Thermal Monitoring: through an apposite pin the device senses the
temperature of the hottest component in the application driving the Warning and the Alarm
signal as a consequence.
A compact 10x10mm body TQFP64 package with exposed thermal pad allows dissipating
the power to drive the external MOSFET through the system board.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| L6714TR | 功能描述:功率驅(qū)動(dòng)器IC 4 Phase Controller RoHS:否 制造商:Micrel 產(chǎn)品:MOSFET Gate Drivers 類型:Low Cost High or Low Side MOSFET Driver 上升時(shí)間: 下降時(shí)間: 電源電壓-最大:30 V 電源電壓-最小:2.75 V 電源電流: 最大功率耗散: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube |
| L6716 | 制造商:STMicroelectronics 功能描述:DC DC Cntrlr Quad-OUT Sync Step Down 48-Pin VFQFPN EP Tray 制造商:STMicroelectronics 功能描述:HANDHELD & COMPUTER PM - Trays 制造商:STMicroelectronics 功能描述:2/3/4 Phase Controlr Embedded Driver |
| L6716TR | 功能描述:開關(guān)變換器、穩(wěn)壓器與控制器 2/3/4 phase CNTRL Embedded Drivers RoHS:否 制造商:Texas Instruments 輸出電壓:1.2 V to 10 V 輸出電流:300 mA 輸出功率: 輸入電壓:3 V to 17 V 開關(guān)頻率:1 MHz 工作溫度范圍: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:WSON-8 封裝: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 |
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