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参数资料
| 型号： | L6710 |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 稳压器 |
| 英文描述： | 2 A SWITCHING CONTROLLER, PQFP44 |
| 封装： | 10 X 10 MM, 1 MM HEIGHT, TQFP-44 |
| 文件页数： | 18/34页 |
| 文件大小： | 1610K |
| 代理商： | L6710 |
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L6710
after the pin and connected through Rg to the sense point (see Fig. 17). The PCB traces connecting
these resistors to the reading point must be routed as parallel traces in order to avoid the pick-up of any
common mode noise. It's also important to avoid any offset in the measurement and to get a better pre-
cision, to connect the traces as close as possible to the sensing elements, dedicated current sense re-
sistor or low side mosfet RdsON.
Moreover, when using the low side mosfet RdsON as current sense element, the ISENx pin is practically
connected to the PHASEx pin. DO NOT CONNECT THE PINS TOGETHER AND THEN TO THE HS
SOURCE! The device won't work properly because of the noise generated by the return of the high side
driver. In this case route two separate nets: connect the PHASEx pin to the HS Source (route together
with HGATEx) with a wide net (30 mils) and the ISENx pin to the LS Drain (route together with PGNDS).
Moreover, the PGNDS pin is always connected, through the Rg resistor, to the PGND: DO NOT CON-
NECT DIRECTLY TO THE PGND! In this case the device won't work properly. Route anyway to the LS
mosfet source (together with ISENx net).
Right and wrong connections are reported in Figure 18.
Symmetrical layout is also suggested to avoid any unbalance between the two phases of the converter.
Figure 18. PCB layout connections for sense nets.
EMBEDDING L6710-BASED VRMs…
When embedding the VRM into the application, additional care must be taken since the whole VRM is a
switching DC/DC regulator and the most common system in which it has to work is a digital system such
as MB or similar. In fact, latest MB has become faster and powerful: high speed data bus are more and
more common and switching-induced noise produced by the VRM can affect data integrity if not following
additional layout guidelines. Few easy points must be considered mainly when routing traces in which
switching high currents flow (switching high currents cause voltage spikes across the stray inductance of
the traces causing noise that can affect the near traces):
– When reproducing high current path on internal layers, please keep all layers the same size in order
to avoid "surrounding" effects that increases noise coupling.
– Keep safe guarding distance between high current switching VRM traces and data buses, especially
if high-speed data bus to minimize noise coupling.
– Keep safe guard distance or filter properly when routing bias traces for I/O sub-systems that must
walk near the VRD.
– Possible causes of noise can be located in the PHASE connections, Mosfet gate drive and Input volt-
age path (from input bulk capacitors and HS drain). Also PGND connections must be considered if
not insisting on a power ground plane. These connections, that can be possible sources of noise,
must be carefully kept far away from noise-sensitive data bus.
To LS Drain and Source
(or Sense Resistor)
To HS Gate and Source
(30 mils wide)
To HS Source
VIA to
GND Plane
NOT CORRECT
CORRECT
相关PDF资料 |
PDF描述 |
|---|---|
| L6710TR | 2 A SWITCHING CONTROLLER, PQFP44 |
| L6713ATR | 2 A SWITCHING CONTROLLER, 225 kHz SWITCHING FREQ-MAX, PQFP64 |
| L6716TR | DUAL SWITCHING CONTROLLER, 225 kHz SWITCHING FREQ-MAX, QCC48 |
| L6716 | DUAL SWITCHING CONTROLLER, 225 kHz SWITCHING FREQ-MAX, QCC48 |
| L6722 | SWITCHING CONTROLLER, 300 kHz SWITCHING FREQ-MAX, QCC36 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| L6710TR | 功能描述:功率驱动器IC 6-Bit Dual Ph Contlr RoHS:否 制造商:Micrel 产品:MOSFET Gate Drivers 类型:Low Cost High or Low Side MOSFET Driver 上升时间: 下降时间: 电源电压-最大:30 V 电源电压-最小:2.75 V 电源电流: 最大功率耗散: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 封装:Tube |
| L6711 | 功能描述:DC/DC 开关控制器 3 PHASE CONTROLLER RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
| L6711_06 | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:3 Phase controller with dynamic VID and selectable DACs |
| L6711TR | 功能描述:DC/DC 开关控制器 3 PHASE CONTROLLER RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
| L6712 | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:TWO-PHASE INTERLEAVED DC/DC CONTROLLER |
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