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参数资料
| 型号： | L6722 |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 稳压器 |
| 英文描述： | SWITCHING CONTROLLER, 300 kHz SWITCHING FREQ-MAX, QCC36 |
| 封装： | 6 X 6 MM, 1 MM PITCH, VFQFPN-36 |
| 文件页数： | 25/34页 |
| 文件大小： | 421K |
| 代理商： | L6722 |
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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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PDF描述 |
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相关代理商/技术参数 |
参数描述 |
|---|---|
| L6722TR | 功能描述:开关变换器、稳压器与控制器 3 Phase Controller RoHS:否 制造商:Texas Instruments 输出电压:1.2 V to 10 V 输出电流:300 mA 输出功率: 输入电压:3 V to 17 V 开关频率:1 MHz 工作温度范围: 安装风格:SMD/SMT 封装 / 箱体:WSON-8 封装:Reel |
| L6725 | 功能描述:开关变换器、稳压器与控制器 Vltg Mode PWM Controller RoHS:否 制造商:Texas Instruments 输出电压:1.2 V to 10 V 输出电流:300 mA 输出功率: 输入电压:3 V to 17 V 开关频率:1 MHz 工作温度范围: 安装风格:SMD/SMT 封装 / 箱体:WSON-8 封装:Reel |
| L6725_07 | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:Voltage mode PWM controller with bootstrap anti-discharging system |
| L6725A | 功能描述:开关变换器、稳压器与控制器 Vltg Mode PWM Controller RoHS:否 制造商:Texas Instruments 输出电压:1.2 V to 10 V 输出电流:300 mA 输出功率: 输入电压:3 V to 17 V 开关频率:1 MHz 工作温度范围: 安装风格:SMD/SMT 封装 / 箱体:WSON-8 封装:Reel |
| L6725ATR | 功能描述:开关变换器、稳压器与控制器 Step-Down Controller RoHS:否 制造商:Texas Instruments 输出电压:1.2 V to 10 V 输出电流:300 mA 输出功率: 输入电压:3 V to 17 V 开关频率:1 MHz 工作温度范围: 安装风格:SMD/SMT 封装 / 箱体:WSON-8 封装:Reel |
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