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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)： | 26/56頁 |
| 文件大?。?/td> | 1081K |
| 代理商： | L6717 |
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Power manager I2C
L6717
32/56
Doc ID 17326 Rev 1
6.2
Dynamic phase management (DPM)
Dynamic phase management allows to adjust the number of working phases according to
the delivered current still maintaining the benefits of the multiphase regulation.
Phase number is reduced by monitoring the voltage level across ILIM pin: L6717 reduces
the number of working phase according to the strategy defined by the PSI_A flag when the
voltage across ILIM pin is lower than VDPM. When the load current increases the phase
number is restored to the original value as soon as the voltage across ILIM pin exceeds
VDPM.
The current at which the transition happens (IDPM) can be estimated as:
VDPM thresholds are defined as a percentage of the voltage on ILIM pin corresponding to
the Thermal Design Current of the application.
1.8V on ILIM pin corresponds to 100% of the load and DPM threshold are defined as a
percentage of 1.8V (see Table 18 for details).
An hysteresis is provided for each threshold in order to avoid multiple DPM actions
triggering in steady load conditions.
DPM is disabled by default: Soft-start is performed with all the available phases.
Table 17.
Power management flags
Data stream bit
Flag
Description
[1:3]
n/a
Ignored.
[4:5]
DPMTH
DPM threshold. Allow to define 4 different values for VDPM.
See Section 6.2 for code/thresholds correspondence.
[6]
PSI_A
0b (default): IC working in single phase when PSI_L asserted.
1b:IC working in two phase when PSI_L asserted.
[7]
PSI_EN
0b: PSI_L flag in SVI ignored.
1b (default): PSI_L flag in SVI monitored and phase dropping
enabled according to PSI_A.
[8]
DPM_ON
0b (default): DPM disabled.
1b: DPM enabled.
Table 18.
VDPM thresholds
CODE
VDPM (ILIM rising)
VDPM (ILIM falling)
00 (default)
20%
15%
01
25%
20%
10
30%
25%
11
35%
30%
I
DPM
V
DPM
R
ILIM
---------------
R
G
DCR
-------------
=
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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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