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參數資料
| 型號： | 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： | 19/56頁 |
| 文件大?。?/td> | 1081K |
| 代理商： | L6717 |
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Power manager I2C
L6717
26/56
Doc ID 17326 Rev 1
6
Power manager I2C
L6717 features a secondary power manager I2C bus to easy the implementation of power
management features as well as over-speeding for “enthusiastic” users. The power
manager I2C bus is operative after the PWRGOOD signal is driven high at the end of the
soft-start.
Power manager I2C is a two wire, SCL (Clock) and SDA (Data), bus connecting a single
master to one or more slaves (L6717) separately addressable. The master initiates and
terminates I2C transactions and drives both the clock, SCL, and the data, SDA, during a
transaction. The slave receives the I2C transactions and acts accordingly.
Power manager I2C wire protocol is based on fast-mode I2C.
Power manager I2C address configuration can be programmed through ADDR pin while
I2CDIS pin allows to disable the bus. See Table 10.
Power manager I2C and SVI bus are two independent buses working in parallel. In case two
commends are issued in the same time on the two buses, L6717 performs them in the same
time.
Table 10.
Power manager I2C configuration
6.1
Power manager commands
Power manager I2C master issues different command sequences to modify several voltage
positioning parameters for CORE and/or NB Sections of L6717.
Moreover the power manager I2C commands allow to configure DPM and other power-
saving-related features.
During a power manager command:
– The bus master sends the start (START) sequence followed by the address of the
controller which the power manager command applies. The bus master then sends
the write (WRITE) bit. After the write bit, the voltage regulator (VR, L6717) sends the
acknowledge (ACK) bit.
– The bus master sends the command code during the command phase. The VR
(L6717) sends the acknowledge (ACK) bit after the command phase.
– The bus master sends the data stream related to the command phase previously
issued (if applicable). The VR (L6717) sends the acknowledge (ACK) bit after the data
stream. Finally, the bus master sends the stop (STOP) sequence.
– After the VR (L6717) has detected the STOP sequence, it performs operations
according to the command issued by the bus master.
I2CDIS
ADDR
Description
3.3V
n/a
Power manager
I2C disabled.
SDA/OVP now becomes OVP to program the OV threshold for
both CORE and NB sections.
SCL/OS now becomes OS to program Offset for the CORE
section.
OPEN
3.3V
It sets
I2C address to 1100111.
OPEN
It sets
I2C address to 1100110 (default).
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相關代理商/技術參數 |
參數描述 |
|---|---|
| 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 開關頻率:1 MHz 工作溫度范圍: 安裝風格: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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