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参数资料
| 型号： | L6717 |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 稳压器 |
| 英文描述： | DUAL SWITCHING CONTROLLER, 575 kHz SWITCHING FREQ-MAX, QCC48 |
| 封装： | 7 X 7 MM, 1 MM HEIGHT, ROHS COMPLIANT, VFQFPN-48 |
| 文件页数： | 22/56页 |
| 文件大小： | 1081K |
| 代理商： | L6717 |
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L6717
Power manager I2C
Doc ID 17326 Rev 1
29/56
6.1.1
Overspeeding command (OVRSPD)
This command allows to add a variable positive/negative offset to the CORE and/or NB
reference programmed by the SVI bus in order to overspeed the CPU. L6717 allows adding
up to 1.550 V in 50 mV steps to the reference.
The maximum possible output voltage for CORE section is internally limited to 2.8 V. In case
the SVI programmed reference plus the offset set through the OVRSPD command exceed
this value, the reference for the regulation is clamped to 2.8 V.
The maximum possible output voltage for NB section is internally limited by the maximum
offset achievable for NB section that is +600 mV over the SVI programmed reference.
Once the controller acknowledges the command and recognizes the OVRSPD command,
the reference will step up or down until reaching the target offset performing a on-the-fly VID
transition. In case a new overspeed command is issued while the output voltage is not yet
stabilized (i.e. the reference is still stepping to the target), the target is updated according to
the new offset defined.
The command addresses both sections through two separate bits in the command code
(“CN” bits - See Table 12). By asserting the corresponding bit, the subsequent data stream
will apply to the identified section. Asserting both bits (“CN” = 11b) will address both
sections. CN = 00b will be ignored regardless of the data Stream provided. “CN” = 10b and
“CN” = 01b allow to address only CORE or only NB section respectively.
010
[1:4] xxxx
[5:6] kDRPNB
[7:8] kDRP
DRP_ADJ: Droop function adjustment. Modifies the slope of the
output voltage implemented through the droop function.
[1:4]: ignored
[5:6]: kDRPNB. Defines the kDRP factor for NB section.
[7:8]: kDRP. Defines the kDRPNB factor for CORE section.
Default value is kDRPx = 1/4 for both sections.
See Table 16 for details about DRP_ADJ codification and Section 7.3
and Section 7.6 for LoadLine definition.
011
[1:3] xxx
[4:5] DPMTH
[6] PSI_A
[7] PSI_EN
[8] DPM_ON
Power management flags: Set of three flags to define power
management actions of the controller.
[1:3]: ignored
[4:5]: DPM thresholds. Default is 00b.
[6] PSI_A: PSI action. It defines the action to take when PSI_L flag is
asserted by SVI bus. The same action is considered by DPM. Send
0b to work in single phase (default) or 1b to work at two phases.
[7] PSI_EN: PSI enable. It enables or disables the PSI management.
Set to 1b (default) to manage PSI_L according to PSI_A or set to 0b
to ignore PSI_L flag sent through SVI bus.
[8] DPM_ON: Dynamic phase management. It enables or disables
the DPM mode. Set to 1b to enable DPM or set to 0b (default) to
disable it.
When enabled DPM acts automatically cutting phases according to
PSI action flag at light load.
See Section 6.2 for details about DPM.
Table 12.
Power manager I2C command phase and data stream
Command
code [4:6]
Data stream
[1:8]
Description
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相关代理商/技术参数 |
参数描述 |
|---|---|
| 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: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 |
| L6718TR | 功能描述:其他电源管理 Multiphase Dual PWM VR12 25MHz LTB RoHS:否 制造商:Texas Instruments 输出电压范围: 输出电流:4 mA 输入电压范围:3 V to 3.6 V 输入电流: 功率耗散: 工作温度范围:- 40 C to + 110 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-48 封装:Reel |
| L6720 | 制造商:未知厂家 制造商全称:未知厂家 功能描述: |
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