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參數(shù)資料
| 型號： | L6701 |
| 廠商： | 意法半導體 |
| 英文描述： | 3 Phase Controller for VR10, VR9 and K8 CPUs |
| 中文描述： | 3 VR10，VR9和K8處理器相控制器 |
| 文件頁數(shù)： | 34/44頁 |
| 文件大?。?/td> | 492K |
| 代理商： | L6701 |
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14 Oscillator
L6701
34/44
14
Oscillator
The internal oscillator generates the triangular waveform for the PWM charging and
discharging with a constant current an internal capacitor. The switching frequency for each
channel, F
SW
, is internally fixed at 100kHz so that the resulting switching frequency at the load
side results in being tripled (300kHz).
The current delivered to the oscillator is typically 25
μ
A (corresponding to the free-running
frequency F
SW
=100kHz) and it may be varied using an external resistor (R
OSC
) connected
between the OSC pin and SGND. Since the OSC pin is fixed at 1.24V, the frequency is
increased proportionally to the current sunk from the pin considering the internal gain of 4KHz/
μ
A.
In particular connecting R
OSC
to SGND the frequency is increased according to the following
relationship:
R
OSC
k
R
OSC
vs. SGND
Caution:
Maximum programmable switching frequency per phase must be limited to 500kHz to avoid
current reading errors causing, as a consequence, current sharing errors. Anyway, device
power dissipation must be checked prior to design high switching frequency systems.
Figure 16. R
OSC
vs. Switching Frequency
F
SW
100kHz
(
)
----------------------------
4kHz
A
----------
+
100kHz
6
R
OSC
k
(
)
----------------------------
+
=
=
0
50
100
150
200
250
100
150
200
250
300
350
400
450
500
550
Fsw [kHz] Programmed
R
相關PDF資料 |
PDF描述 |
|---|---|
| L6701TR | 3 Phase Controller for VR10, VR9 and K8 CPUs |
| L6711 | 3 PHASE CONTROLLER WITH DYNAMIC VID AND SELECTABLE DACs |
| L6711TR | 3 PHASE CONTROLLER WITH DYNAMIC VID AND SELECTABLE DACs |
| L6714 | 4 phase controller with embedded drivers for Intel VR10, VR11 and AMD 6Bit CPUs |
| L6714TR | 4 phase controller with embedded drivers for Intel VR10, VR11 and AMD 6Bit CPUs |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| L6701TR | 功能描述:DC/DC 開關控制器 3 Phase Controller RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風格: 封裝 / 箱體:CPAK |
| L6706 | 制造商:STMicroelectronics 功能描述:DC DC Cntrlr Single-OUT Step Down 40-Pin VFQFPN EP Tray 制造商:STMicroelectronics 功能描述:HANDHELD & COMPUTER PM - Trays 制造商:STMicroelectronics 功能描述:8-Bit VR11.1 Single CTRL w/int Driver |
| L6706TR | 功能描述:DC/DC 開關控制器 VR11.1 SINGLE PHASE CNTRL W/INT DRI RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風格: 封裝 / 箱體:CPAK |
| L6709 | 功能描述:功率驅動器IC 6-Bit Dual Ph Contlr RoHS:否 制造商:Micrel 產品:MOSFET Gate Drivers 類型:Low Cost High or Low Side MOSFET Driver 上升時間: 下降時間: 電源電壓-最大:30 V 電源電壓-最小:2.75 V 電源電流: 最大功率耗散: 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube |
| L6709TR | 功能描述:功率驅動器IC 6-Bit Dual Ph Contlr RoHS:否 制造商:Micrel 產品:MOSFET Gate Drivers 類型:Low Cost High or Low Side MOSFET Driver 上升時間: 下降時間: 電源電壓-最大:30 V 電源電壓-最小:2.75 V 電源電流: 最大功率耗散: 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube |
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