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| 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： | 19/56页 |
| 文件大小： | 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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