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参数资料
| 型号： | L6711TR |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 稳压器 |
| 英文描述： | 2 A SWITCHING CONTROLLER, 178 kHz SWITCHING FREQ-MAX, PQFP48 |
| 封装： | 7 X 7 MM, 1 MM HEIGHT, TQFP-48 |
| 文件页数： | 42/50页 |
| 文件大小： | 679K |
| 代理商： | L6711TR |
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L6711
Embedding L6711-based VRDs...
47/50
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Embedding L6711-based VRDs...
When embedding the VRD into the application, additional care must be taken since the
whole VRD 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 VRD 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):
Keep safe guarding distance between high current switching VRD 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 voltage path (from input bulk capacitors and HS drain). Also PGND connections must
be considered if not insisting on a power ground plane. These connections must be carefully
kept far away from noise-sensitive data bus.
Since the generated noise is mainly due to the switching activity of the VRM, noise
emissions depend on how fast the current switch. To reduce noise emission levels, it is also
possible, in addition to the previous guidelines, to reduce the current slope and then to
increase the switching times: this will cause, as a consequence of the higher switching time,
an increase in switching losses that must be considered in the thermal design of the system.
相关PDF资料 |
PDF描述 |
|---|---|
| L6711 | 2 A SWITCHING CONTROLLER, 178 kHz SWITCHING FREQ-MAX, PQFP48 |
| L6714TR | SWITCHING CONTROLLER, 170 kHz SWITCHING FREQ-MAX, PQFP64 |
| L6714 | SWITCHING CONTROLLER, 170 kHz SWITCHING FREQ-MAX, PQFP64 |
| L6725TR | 20 A SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, PDSO16 |
| L6728ATR | SWITCHING CONTROLLER, 660 kHz SWITCHING FREQ-MAX, PDSO10 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| L6712 | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:TWO-PHASE INTERLEAVED DC/DC CONTROLLER |
| L6712_05 | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:TWO-PHASE INTERLEAVED DC/DC CONTROLLER |
| L6712A | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:TWO-PHASE INTERLEAVED DC/DC CONTROLLER |
| L6712AD | 功能描述:开关变换器、稳压器与控制器 2-Ph Interleaved 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 |
| L6712ADTR | 功能描述:开关变换器、稳压器与控制器 2-Ph Interleaved 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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