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MOSFET Power Loss

  • 源級驅動技術介紹_晶豐明源

    上海晶豐明源半導體有限公司(Bright Power Semiconductor ) 是一家從事電源管理芯片設計和銷售的公司,公司主要產品是大功率LED驅動芯片.

    標簽: 源級驅動 晶豐明源

    上傳時間: 2013-10-16

    上傳用戶:aysyzxzm

  • XAPP946-適用于Virtex-4 RocketIO MGT的開關電源

      This document presents design techniques and reference circuits that power Virtex™-4 FXRocketIO™ multi-gigabit transceivers (MGTs) operating at data rates below 3.125 Gb/s.When using multiple transceivers, it is sometimes preferred to power them from a switchingpower supply. However, switching power supplies generate noise that affects transceiver

    標簽: RocketIO Virtex XAPP 946

    上傳時間: 2013-11-18

    上傳用戶:huang111

  • 四路輸出開關轉換器提供TFT LCD面板的電源

      The LT®1943 is a highly integrated, 4-output regulatordesigned to power large TFT LCD panels. The LT1943employs switching regulators—instead of linear regulators—to minimize power dissipation and accommodate awide input voltage range. The wide input range, 4.5V to22V, allows it to accept a variety of power sources,including the commonly used 5V, 12V and 19V AC adaptors.

    標簽: TFT LCD 四路輸出 開關轉換器

    上傳時間: 2013-10-19

    上傳用戶:yuhaihua_tony

  • 電池管理系統的多點溫度測量方案

      Abstract: It is critically important that lithium-ion battery stacks have a good battery-management system for monitoring many cellvoltages and cell temperatures. Without that monitoring, thermal runaway can lead to a battery explosion. This design idea presentsa low-power circuit that measures the temperature of up to 12 thermistors. It powers and configures the multiplexers, and also putsthe muxes into shutdown to save power when not measuring temperatures.

    標簽: 電池管理系統 多點 溫度測量 方案

    上傳時間: 2013-10-29

    上傳用戶:xwd2010

  • 簡單的電池電路擴展以太網供電(PoE)峰值電流

      Power over Ethernet (PoE) is a new development thatallows for the delivery of power to Ethernet-based devicesvia standard Ethernet CAT5 cable, precluding the need forwall adapters or other external power sources. The PoEspecification defines a hardware detection protocol wherePower Sourcing Equipment (PSE) is able to identify PoEPowered Devices (PDs), thus allowing full backwardscompatibility with non-PoE-aware (legacy) Ethernetdevices.

    標簽: PoE 電池電路 擴展 以太網供電

    上傳時間: 2013-11-11

    上傳用戶:daoyue

  • 簡單、高效USB電源管理IC解決方案

      Linear Technology offers a variety of devices that simplifyconverting power from a USB cable, but the LTC®3455represents the highest level of functional integration yet. The LTC3455 seamlessly manages power flowbetween an AC adapter, USB cable and Li-ion battery,while complying with USB power standards, all from a4mm × 4mm QFN package. In addtion, two high efficiencysynchronous buck converters generate low voltage railswhich most USB-powered peripherals require. TheLTC3455 also provides power-on reset signals for themicroprocessor, a Hot SwapTM output for poweringmemory cards as well as an uncommitted gain blocksuitable for use as a low-battery comparator or an LDOcontroller. The PCB real estate required for the entire USBpower control circuit and two DC/DC converters is only225mm2.

    標簽: USB 電源管理IC 方案

    上傳時間: 2013-11-02

    上傳用戶:名爵少年

  • 低電壓FPGA的高性能開關電源解決方案

      The core voltages for FPGAs are moving lower as a resultof advances in the fabrication process. The newest FPGAfamily from Altera, the Stratix® II, now requires a corevoltage of 1.2V and the Stratix, Stratix GX, HardCopy®Stratix and CycloneTM families require a core voltage of1.5V. This article discusses how to power the core and I/Oof low voltage FPGAs using the latest step-down switchmode controllers from Linear Technology Corporation.

    標簽: FPGA 低電壓 高性能開關 電源解決方案

    上傳時間: 2013-10-08

    上傳用戶:wangfei22

  • 單片同步穩壓器驅動外部元件負載

      The LTC®3414 offers a compact and efficient voltage regulatorsolution for point of load conversion in electronicsystems that require low output voltages (down to 0.8V)from a 2.5V to 5V power bus. Internal power MOSFETswitches, with only 67mW on-resistance, allow theLTC3414 to deliver up to 4A of output current with efficiencyas high as 94%. The LTC3414 saves space by operatingwith switching frequencies as high as 4MHz, enabling theuse of tiny inductors and capacitors.

    標簽: 同步穩壓器 元件 驅動 負載

    上傳時間: 2014-01-03

    上傳用戶:dongbaobao

  • MAX14885E VGA交叉開關電源排序

      The MAX14885E, a 2:2 VGA switch, connects a VGA source to a VGA monitor. To ease direct connection to graphics controllers orthe ASIC, the MAX14885E has two supplies: VCC, a 5V ±5% supply, drives the VGA side interface; and the VL supply sets the logicswitching thresholds on the digital input pins (EN, S00, S01, S10, S11, SHA, SHB, SVA, and SVB). This application note documentsthe proper sequencing of the VCC and VL power supplies on power-up.

    標簽: 14885E 14885 MAX VGA

    上傳時間: 2013-10-23

    上傳用戶:wuchunzhong

  • 利用纖巧型負載點電路來簡化電源電壓的跟蹤和排序

      Multiple-voltage electronics systems often requirecomplex supply voltage tracking or sequencing, whichif not met, can result in system faults or even permanentfailures in the fi eld. The design diffi culties in meetingthese requirements are often compounded in distributedpowerarchitectures where point-of-load (POL) DC/DCconverters or linear regulators are scattered across PCboard space, sometimes on different board planes. Theproblem is that power supply circuitry is often the lastcircuitry to be designed into the board, and it must beshoehorned into whatever little board real estate is left.Often, a simple, drop-in, fl exible solution is needed tomeet these requirements.

    標簽: 負載點電路 電源電壓 排序

    上傳時間: 2013-10-08

    上傳用戶:15071087253

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