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參數(shù)資料
| 型號： | L6711 |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | 3 PHASE CONTROLLER WITH DYNAMIC VID AND SELECTABLE DACs |
| 中文描述： | 3相控制器，動態(tài)VID和可選數(shù)模轉(zhuǎn)換器 |
| 文件頁數(shù)： | 32/38頁 |
| 文件大?。?/td> | 591K |
| 代理商： | L6711 |
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L6711
32/38
capacitors are preferred.
Use as much VIAs as possible when power traces have to move between different planes on the PCB:
this reduces both parasitic resistance and inductance. Moreover, reproducing the same high-current trace
on more than one PCB layer will reduce the parasitic resistance associated to that connection.
Connect output bulk capacitor as near as possible to the load, minimizing parasitic inductance and resis-
tance associated to the copper trace also adding extra decoupling capacitors along the way to the load
when this results in being far from the bulk capacitor bank.
Figure 24. Power connections and related connections layout guidelines (same for all phases).
18.2 Power Connections Related.
Figure 24 shows some small signal components placement.
■
Gate and phase traces
must be sized according to the driver RMS current delivered to the power
mosfet. The device robustness allows managing applications with the power section far from the
controller without losing performances. Anyway, when possible, it is suggested to minimize the distance
between controller and power section.
In addition, since the PHASEx pin is the return path for the high side driver, this pin might be connected
directly to the High Side mosfet Source pin to have a proper driving for this mosfet. For the LS mosfets,
the return path is the PGNDx pin: it can be connected directly to the power ground plane.
■
Bootstrap capacitor
must be placed as close as possible to the BOOTx and PHASEx pins to minimize
the loop that is created.
■
Decoupling capacitor from
VCC and SGND placed as close as possible to the involved pins.
■
Decoupling capacitor from
VCCDRx and PGNDx placed as close as possible to those pins. This
capacitor sustains the peak currents requested by the low-side mosfet drivers.
■
Sensible components
must be referred to SGND (when present): frequency set-up resistor R
OSC
, offset
resistor R
OFFSET
, TC resistor R
TC
and OVP resistor R
OVP
.
■
Star grounding:
Connect SGND to PGND plane in a single point to avoid that drops due to the high
current delivered causes errors in the device behavior.
■
An additional ceramic capacitor is suggested to place near HS mosfet drain. This helps in reducing HF
noise.
■
VSEN pin filtered vs. SGND helps in reducing noise injection into device.
■
OUTEN pin filtered vs. SGND helps in reducing false trip due to coupled noise: take care in routing
driving net for this pin in order to minimize coupled noise.
■
PHASE pin spikes
. Since the HS mosfet switches hardly, heavy voltage spikes can be observed on the
PHASEx pins. If these voltage spikes overcome the max breakdown voltage of the pin, the device can
L
C
IN
V
IN
UGATEx
PHASEx
LGATEx
PGNDx
LOAD
BOOTx
PHASEx
VCC
SGND
+Vcc
C
B
L
C
IN
V
IN
LOAD
To limit C
BOOT
Extra-Charge
a. PCB power and ground planes areas b. PCB small signal components placement
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| 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 |
| L6726A | Single phase PWM controller |
| L6726ATR | Single phase PWM controller |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| L6711_06 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:3 Phase controller with dynamic VID and selectable DACs |
| L6711TR | 功能描述:DC/DC 開關(guān)控制器 3 PHASE CONTROLLER RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)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(fēng)格: 封裝 / 箱體:CPAK |
| L6712 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:TWO-PHASE INTERLEAVED DC/DC CONTROLLER |
| L6712_05 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:TWO-PHASE INTERLEAVED DC/DC CONTROLLER |
| L6712A | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:TWO-PHASE INTERLEAVED DC/DC CONTROLLER |
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