523881cf11
Affected files: _resources/Pasted image 20240501170704.png _resources/Pasted image 20240501170731.png _resources/Pasted image 20240501170913.png _resources/Pasted image 20240501170953.png _resources/Pasted image 20240501171319.png 电源/DCDC/升降压.md
61 lines
1.5 KiB
Markdown
61 lines
1.5 KiB
Markdown
---
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title: 升降压
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updated: 2022-01-12 09:03:31Z
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created: 2022-01-08 13:18:04Z
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tags:
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- dcdc
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- 国产化
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- 电源
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---
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#国产化
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#电源
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#dcdc
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# SC8721
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国产
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- Integrated Switches, 10 m for Q1/4, 20 m for Q2/3
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- Wide VIN Range: 2.7 V to 22 V, 25V sustainable
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- Wide VOUT Range: 2.7 V to 22 V, 25V sustainable
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- 输出电压可调（电阻调、IIC调），电流可达10A
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- 可模块化，输入，输出，使能，Trim，SCL，SDA，CSO
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## **电阻调**：
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VOUT = VFB_REF x (1+ RUP/RDOWN )，VFB_REF is the internal reference voltage 1V，分辨率1mV
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## **IIC调**：
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VOUT_SET =5±（VOUT_SET_MSB x4+VOUT_SET_LSB) x 20mV，分辨率20mV
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## **IIC限流**：
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IOUT_ILIM = (CSO_SET+1)*4mV*2kR/（Rs*RCSO），Rs=5mR，RCSO=32kR时分辨率50mA
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## 2021.06
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6块/片，可做数控电源
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实测效率很高，单电（3-4.2V）输入，输出3.3V时效率不低于95%
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~~SC8815/SC8802~~
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![[Pasted image 20240501170953.png]]
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![[Pasted image 20240501170913.png]]
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# TPS63070
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静态电流50uA
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# HX4002B
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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
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# TPS63802
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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。
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![[Pasted image 20240501171319.png]]
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![[Pasted image 20240501170704.png]]
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![[Pasted image 20240501170731.png]] |