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參數(shù)資料
| 型號(hào)： | L6717 |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | DUAL SWITCHING CONTROLLER, 575 kHz SWITCHING FREQ-MAX, QCC48 |
| 封裝： | 7 X 7 MM, 1 MM HEIGHT, ROHS COMPLIANT, VFQFPN-48 |
| 文件頁數(shù)： | 11/56頁 |
| 文件大?。?/td> | 1081K |
| 代理商： | L6717 |
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L6717
Hybrid CPU support and CPU_TYPE detection
Doc ID 17326 Rev 1
19/56
5
Hybrid CPU support and CPU_TYPE detection
L6717 is able to detect the type of the CPU-core connected and to configure itself
accordingly. At system Start-up, on the rising-edge of the EN signal, the device monitors the
status of VID1 and configures the PVI mode (VID1 = 1) or SVI mode (VID1 = 0).
When in PVI mode, L6717 uses the information available on the VID[0: 5] bus to address the
CORE Section output voltage according to Table 6. NB Section is kept in HiZ mode, both
MOSFETs are kept OFF.
When in SVI mode, L6717 ignores the information available on VID0, VID4 and VID5 and
uses VID2 and VID3 as a SVI bus addressing the CORE and NB Sections according to the
SVI protocol.
Caution:
To avoid any risk of errors in CPU type detection (i.e. detecting SVI CPU when PVI CPU is
installed on the socket and vice versa), it is recommended to carefully control the start-up
sequencing of the system hosting L6717 in order to ensure than on the EN rising-edge,
VID1 is in valid and correct state. Typical connections consider VID1 connected to CPU
CORE_TYPE through a resistor to correctly address the CPU detection.
5.1
PVI - parallel interface
PVI is a 6-bit-wide parallel interface used to address the CORE section reference. According
to the selected code, the device sets the CORE section reference and regulates its output
voltage as reported into Table 6.
NB section is always kept in HiZ; no activity is performed on this section and both the high-
side and low-side of this section are kept OFF. Furthermore, PWROK information is ignored
as well since the signal only applies to the SVI protocol.
5.2
PVI start-up
Once the PVI mode has been detected, the device uses the whole code available on the
VID[0:5] lines to define the reference for the CORE section. NB section is kept in HiZ. Soft-
start to the programmed reference is performed regardless of the state of PWROK.
See Section 7.8 for details about soft-start.
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PDF描述 |
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| L6728HTR | SWITCHING CONTROLLER, 330 kHz SWITCHING FREQ-MAX, PDSO10 |
| L6728H | SWITCHING CONTROLLER, 330 kHz SWITCHING FREQ-MAX, PDSO10 |
| L6728 | 1.5 A SWITCHING CONTROLLER, 330 kHz SWITCHING FREQ-MAX, DSO10 |
| L6728TR | 1.5 A SWITCHING CONTROLLER, 330 kHz SWITCHING FREQ-MAX, DSO10 |
| L6731BTR | 20 A SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, PDSO16 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 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:開關(guān)變換器、穩(wěn)壓器與控制器 High-Efficienc AM2r2 Hybrid Controller 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 |
| L6718TR | 功能描述:其他電源管理 Multiphase Dual PWM VR12 25MHz LTB RoHS:否 制造商:Texas Instruments 輸出電壓范圍: 輸出電流:4 mA 輸入電壓范圍:3 V to 3.6 V 輸入電流: 功率耗散: 工作溫度范圍:- 40 C to + 110 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-48 封裝:Reel |
| L6720 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述: |
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