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[導(dǎo)讀]   Cypress公司的S6BP401A是電源管理集成電路(PMIC),包含有四個內(nèi)置了開關(guān)FET的降壓2.1MHz DC/DC轉(zhuǎn)換器,兩個低壓降(LDO)的穩(wěn)壓器和數(shù)字窗口看門狗計時器.VIN

  Cypress公司的S6BP401A是電源管理集成電路(PMIC),包含有四個內(nèi)置了開關(guān)FET的降壓2.1MHz DC/DC轉(zhuǎn)換器,兩個低壓降(LDO)的穩(wěn)壓器和數(shù)字窗口看門狗計時器.VIN輸入電壓4.5V-5.5V,內(nèi)置開關(guān)FET的電流高達(dá)3A,主要用在汽車應(yīng)用,先進(jìn)駕駛輔助系統(tǒng)(ADAS),照相機系統(tǒng)如安全照相機和工業(yè)應(yīng)用。本文介紹了S6BP401A主要特性,框圖和架構(gòu)框圖,典型應(yīng)用電路,以及評估板S6SBP401AJ0SA1001主要指標(biāo),電路圖,材料清單和PCB設(shè)計圖。

  S6BP401A is a power management IC, consists of quad buck 2.1 MHz DC/DC converter with built-in switching FETs, dual LowDrop-out regulator (LDOs) and a digital windowed watchdog TImer. Having the switching FETs built-in, S6BP401A realizes highpower conversion efficiency and high switching frequency up to 2.4 MHz. The internal FETs are capable to handle up to 3A load. AsS6BP401A employs the current mode architecture, it has fast load transient response. Built-in output voltage setTIng resistors andcompensaTIon circuits reduce BOM cost and component area.

  S6BP401A主要特性:

  Quad Buck DC/DC Converter (DD1 to DD4)

  VIN Input Range: 4.5V to 5.5V

  Switching Frequency

  External clock mode: 1.8 MHz to 2.4 MHz

  Internal clock mode: 2.0 MHz to 2.2 MHz

  Built-in Switching FETs up to 3A

  Built-in Output Voltage SetTIng Resistors

  Built-in Compensation Circuits

  Dual LDO (LD1, LD2)

  VIN Input Voltage Range: 2.97V to 5.5V

  Built-in Output Voltage Setting resistors

  Power Good Monitor Output for each DC/DC Converters,LDOs

  Built-in Windowed Watchdog Timer (WDT)

 

   圖1.S6BP401A框圖
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