原标题：Cypress S6BP401A汽车ADAS平台电源管理方案

　　cypress公司的S6BP401A是用于汽车ADAS平台的电源管理IC,包括具有内置开关FET的四个2.1MHz DC/DC转换器,两个低压降的稳压器(LDO)和数字窗看门狗定时器,输入电压4.5V-5.5V,主要用在汽车,先进驾驶辅助系统(ADSA),照相系统和工业应用.本文介绍了S6BP401A主要特性,功能框图和框图,应用电路以及评估板S6SBP401AM2SA1001主要指标,框图,电路图,材料清单和PCB设计图.

　　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 (LDO1, LDO2)

　　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)

　　Under Voltage Lockout (UVLO)

　　Thermal Shutdown (TSD)

　　Over Current Protection (OCP)

　　Over Voltage Protection (OVP)

　　Independent Enabling for each DC/DC Converters and LDOs

　　Load-independent Soft-Start

　　Built-in Discharge Resistors

　　Small 6 mm × 6 mm QFN-40 Package

　　S6BP401A应用:

　　Automotive Applications

　　Advanced Driver Assistance Systems (ADAS)

　　Camera Systems such as Security Camera

　　Industrial Applications

　　图1.S6BP401A功能框图

　　图2.S6BP401A框图

　　图3.S6BP401A应用电路图

　　评估板S6SBP401AM2SA1001

　　S6SBP401AM2SA1001 is the evaluation kit for power block for automotive ADAS platform. The board implements power management IC S6BP401A.

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

　　图4.评估板S6SBP401AM2SA1001外形图

　　图5.评估板S6SBP401AM2SA1001功能示意图

　　评估板S6SBP401AM2SA1001指标:

　　评估板S6SBP401AM2SA1001材料清单: