obsidian-notes/电源/DCDC/升降压.md
murmur 523881cf11 Matebook更新了6个文件
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电源/DCDC/升降压.md
2024-05-01 17:14:42 +08:00

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title updated created tags
升降压 2022-01-12 09:03:31Z 2022-01-08 13:18:04Z
dcdc
国产化
电源

#国产化 #电源 #dcdc

SC8721

国产

  • Integrated Switches, 10 m for Q1/4, 20 m for Q2/3

  • Wide VIN Range: 2.7 V to 22 V, 25V sustainable

  • Wide VOUT Range: 2.7 V to 22 V, 25V sustainable

  • 输出电压可调电阻调、IIC调电流可达10A

  • 可模块化输入输出使能TrimSCLSDACSO

电阻调

VOUT = VFB_REF x (1+ RUP/RDOWN )VFB_REF is the internal reference voltage 1V分辨率1mV

IIC调

VOUT_SET =5±VOUT_SET_MSB x4+VOUT_SET_LSB) x 20mV分辨率20mV

IIC限流

IOUT_ILIM = (CSO_SET+1)4mV2kR/Rs*RCSORs=5mRRCSO=32kR时分辨率50mA

2021.06

6块/片,可做数控电源

实测效率很高单电3-4.2V输入输出3.3V时效率不低于95%

SC8815/SC8802 !Pasted image 20240501170953.png !Pasted image 20240501170913.png

TPS63070

静态电流50uA 8d90024233f8aa7ee82b33dfda378a87.png

HX4002B

sot-23-6封装。1.8-5转3.3适合单锂供电。静态电流较大约1.8mA,低功耗使用续带开关

TPS63802

tb 不少DCDC升降压模块采用此芯片输入电压1.3-5.5V输出1.8-5.2V,输出电流>1A==11uA==静态电流,可免开关。 !Pasted image 20240501171319.png !Pasted image 20240501170704.png !Pasted image 20240501170731.png