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同步开关稳压器和控制器使用两个开关元件——高边开关和低边开关。这与非同步开关稳压器不同,后者一般采用单个开关控制高边电压,使用一个高速肖特基二极管作为低边开关。

同步开关稳压器一般将两个开关集成到器件中,而同步控制器仅提供开关驱动信号。无论哪种情况,开关元件均为低RDS(ON)、大功率FET。

由于两个开关的工作时序可控,再加上FET电阻比肖特基二极管低,所以同步开关稳压器和控制器的稳压效率较高。

同步开关稳压器和控制器可采用升压和降压配置。Maxim提供最先进的同步开关稳压器和控制器。

降压型(Buck)同步开关稳压器(内部开关)
降压型(Buck)同步开关控制器(外部开关)
升压型(Boost)同步开关稳压器(内部开关)
升压/降压型(Buck/Boost)同步开关稳压器(外部开关) 

了解现代开关稳压器技术,理解现代开关稳压器IC与传统稳压器的差异。

现代开关型稳压器技术

本文讨论了现代化开关稳压器优于传统设计的关键因素。新产品带来的利益是惊人的:较小的外形尺寸、设计更简单、工作温度低、效率高,以及较高的集成度,提高最终产品的健壮性和可靠性。


Technical Documents

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现代开关型稳压器技术

November 16, 2020

本文讨论了现代化开关稳压器优于传统设计的关键因素。新产品带来的利益是惊人的:较小的外形尺寸、设计更简单、工作温度低、效率高,以及较高的集成度,提高最终产品的健壮性和可靠性。

参考设计

MAXREFDES1165: 32-Channel Industrial Digital I/O Module

The MAXREFDES1165 is a complete, 32-channel industrial digital I/O module comprising 16 digital ...

MAXREFDES179# Reference Design Board

The MAXREFDES179 reference design is a complete Universal Serial Bus (USB) type-C PD solution fe...

MAXREFDES104#: 健康传感器平台3.0版

HSP3 is a unique evaluation and development platform in a wearable form factor that demos the fu...

MAXREFDES177# IO-Link Universal Analog IO

The MAXREFDES177# IO-Link®-compliant, universal analog IO reference design uses the MAX22515 IO-...

MAXREFDESGPS_B: How to Add GPS to your Product without Draining your Battery

Ultra-low power GPS reference design using the MAX2769C GNSS receiver and the MAX32632 Cortex M4...

MAXREFDES103#:健康传感器腕带

The MAXREFDES103# is a full wrist-worn wearable reference design for heart-rate, heart-rate vari...

Wireless Backhaul Power Supplies

The design provides all the power supply rails and power sequencing necessary to power Xilinx® Z...

Remote Radio Head Power Supplies

The design provides all the power supply rails and power sequencing necessary to power Xilinx® Z...

MAXREFDES69#: Isolated RS-485 Communications Micro PLC card

The MAXREFDES69# reference design is a dual-channel isolated RS-485 data-communication circuit f...

MAXREFDES176#: IO-Link 16-Channel Digital Input Hub

The MAXREFDES176# IO-Link®-compliant, digital input hub reference design uses the MAX22515 IO-Li...

MAXREFDES161#: Frequency Synthesizer Shield

MAXREFDES161# is an Arduino form factor-compatible shield for synthesizing frequencies from 23.5...

MAXREFDES145#: 8-Channel IO-Link Master

The MAXREFDES145# is an IO-Link®-compliant, 8-port IO-Link master reference design that uses TEC...

MAXREFDES1238: Scalable, Single Input, 6 Output, Power Solution for the Versal ACAP Platform

In this design a single 12V input supplies a circuit which outputs 6 separate rails ranging from...

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