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參數(shù)資料
| 型號： | L6722 |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | SWITCHING CONTROLLER, 300 kHz SWITCHING FREQ-MAX, QCC36 |
| 封裝： | 6 X 6 MM, 1 MM PITCH, VFQFPN-36 |
| 文件頁數(shù)： | 25/34頁 |
| 文件大?。?/td> | 421K |
| 代理商： | L6722 |
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Obsolete
Product(s)
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Product(s)
L6722
12 Layout guidelines
31/34
Remote Sense Connection must be routed as parallel nets from the FBG/FBR pins to the load
in order 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.
Locate current reading components close to the device. It's also important to minimize any
offset in the measurement and, to get a better precision, to connect the traces as close as
possible to the sensing elements.
Caution:
Boot capacitor extra charge. Systems that do not use Schottky diodes in parallel to the low-
side mosfet might show big negative spikes on the phase pin. This spike can be limited as well
as the positive spike but has an additional consequence: it causes the bootstrap capacitor to be
over-charged. This extra-charge can cause, in the worst case condition of maximum input
voltage and during particular transients, that boot-to-phase voltage overcomes the abs. max.
ratings also causing device failures. It is then suggested in this cases to limit this extra-charge
by:
–
adding a small resistor in series to the boot diode (one resistor can be enough for all
the three diodes if placed upstream the boot diode anode, see Figure 18)
–
using non-capacitive boot diodes (such as standard diodes).
Figure 18. Power connections and related connections layout (same for all phases).
L
CIN
VIN
UGATEx
PHASEx
LGATEx
PGNDx
LOAD
BOOTx
PHASEx
VCC
SGND
+Vcc
C
BOOT
L
CIN
VIN
LOAD
To limit C
BOOT
Extra-Charge
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| L6722TR | 功能描述:開關(guān)變換器、穩(wěn)壓器與控制器 3 Phase 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: 安裝風格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel |
| L6725 | 功能描述:開關(guān)變換器、穩(wěn)壓器與控制器 Vltg Mode PWM 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: 安裝風格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel |
| L6725_07 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Voltage mode PWM controller with bootstrap anti-discharging system |
| L6725A | 功能描述:開關(guān)變換器、穩(wěn)壓器與控制器 Vltg Mode PWM 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: 安裝風格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel |
| L6725ATR | 功能描述:開關(guān)變換器、穩(wěn)壓器與控制器 Step-Down 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: 安裝風格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel |
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