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參數(shù)資料
| 型號： | L6710 |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 2 A SWITCHING CONTROLLER, PQFP44 |
| 封裝： | 10 X 10 MM, 1 MM HEIGHT, TQFP-44 |
| 文件頁數(shù)： | 17/34頁 |
| 文件大?。?/td> | 1610K |
| 代理商： | L6710 |
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L6710
24/34
Figure 17. Device orientation (left) and sense nets routing (right).
Gate resistors of few ohms help in reducing the power dissipated by the IC without compromising the sys-
tem efficiency.
The placement of other components is also important:
The bootstrap capacitor must be placed as close as possible to the BOOTx and PHASEx pins to mini-
mize the loop that is created.
Decoupling capacitor from VCC AND SGND placed as close as possible to the involved pins.
Decoupling capacitor from VCCDR and PGND placed as close as possible to those pins. This capacitor
sustains the peak currents requested by the low-side mosfet drivers.
Refer to SGND all the sensible components such as frequency set-up resistor (when present) and also
the optional resistor from FB to GND used to give the positive droop effect.
Connect SGND to PGND on the load side (output capacitor) to avoid undesirable load regulation effect
and to ensure the right precision to the regulation when the remote sense buffer is not used. Connect
anyway in a single point (star grounding).
An additional 100nF ceramic capacitor is suggested to place near HS mosfet drain. This helps in reduc-
ing noise.
Filtering VSEN pin vs. GND with 1nF capacitor helps in reducing noise injection into device.
Filtering OUTEN pin vs. GND helps in reducing false trip due to coupled noise: take care in routing driv-
ing net for this pin in order to minimize coupled noise.
PHASE pin spikes. Since the HS mosfet switches in hard mode, heavy voltage spikes can be observed
on the PHASE pins. If these voltage spikes overcome the max breakdown voltage of the pin, the device
can absorb energy and it can cause damages. The voltage spikes must be limited by proper layout, the
use of gate resistors, Schottky diodes in parallel to the low side mosfets and/or snubber network on the
low side mosfets, to a value lower than 26V, for 20nSec, at FSW of 600kHz max.
– Current Sense Connections.
Remote Buffer: The input connections for this component must be routed as parallel nets from the
FBG/FBR pins to the load in order to compensate losses along the output power traces and also to
avoid the pick-up of any common mode noise. Connecting these pins in points far from the load will
cause a non-optimum load regulation, increasing output tolerance.
Current Reading: The Rg resistors have to be placed as close as possible to the ISENx and PGNDS
pins in order to limit the noise injection into the device. Moreover, PGNDS trace must be divided just
To HS Mosfet
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(30 mils wide)
To LS Mosfets
(30 mils wide)
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| L6710TR | 2 A SWITCHING CONTROLLER, PQFP44 |
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| L6716TR | DUAL SWITCHING CONTROLLER, 225 kHz SWITCHING FREQ-MAX, QCC48 |
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| L6722 | SWITCHING CONTROLLER, 300 kHz SWITCHING FREQ-MAX, QCC36 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| L6710TR | 功能描述:功率驅(qū)動器IC 6-Bit Dual Ph Contlr RoHS:否 制造商:Micrel 產(chǎn)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(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube |
| L6711 | 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 |
| 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 |
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