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Switching Regulators

Richtek switching voltage regulators provide accurate output voltage regulation with high efficiency for wide range of applications from battery-powered mobile applications, automotive applications to high power CORE supply computing applications. To select the correct type of switching regulator, you need to consider the application input and output voltage and load current conditions.

Learn more about Switching Regulators →

Step-Down (Buck)

Step-Down (Buck)

Step-Up (Boost)

Step-Up (Boost)

Step-Up or Step-Down (Buck-Boost)

Step-Up or Step-Down (Buck-Boost)

Multi-Phase Step-Down

Multi-Phase Step-Down

Digital Interface Control

Interface Control

Want to know more? Please see Buck Converter Selection Criteria.

Documents and Tools

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Selection Guides

2025/01/13
Richtek Product Selection Guide [Jan., 2025]

Start your project with our power solutions in no time.

2024/06/28
Richtek Automotive Product Selection Guide 2025

Finding the right product for your automotive applications.

2023/08/07
Richtek Featured Product Tree [Aug., 2023]

Accelerate your product search with lists of featured products.

2018/09/01
Power IC Solutions for IoT/Portable/Wearable/Battery-Powered Applications [Sep., 2018]

2015/10/03
Power Mangement Components for Lithium-Ion Battery Powered Applications [Oct., 2015]

2015/10/02
ACOT™ (Advanced Constant-On Time) Synchronous Step-Down Converters [Oct., 2015]

Application Notes

Title Date Action
Power Management for Video Doorbell 2021/10/08
Application and Definition of Thermal Resistances on Datasheet 2020/05/21
Power Management Introduction 2014/11/01

Step-Down (Buck)

Title Date Action
Multi-Source Power Management Design 2022/04/26
Car Battery Cold Crank Waveform Generator 2021/05/21
Modeling and Verification of Thermal Model for Power Management System 2021/01/14
RT6204 Wide Vin Buck Converter 2016/09/01
Analyzing VIN overstress in Power ICs 2016/07/01
RT2875 3A Automotive Buck Converter 2016/03/01
Reducing EMI in buck converters 2016/01/03
Understanding Thermal Characteristic of SOT-223 Package 2016/01/02
The Calculation of Output DC Offset for ACOT™ Control Buck Converter with Feed-forward Compensator 2015/12/03
Basic Calculation of a Buck Converter’s Power Stage 2015/12/02
DC/DC Converter Testing with Fast Load Transient 2015/11/01
Buck Converter Selection Criteria 2015/05/01
Comparing Buck Converter Topologies 2015/01/01
Compensation Design for Peak Current-Mode Buck Converters 2014/11/02
Richtek Designer Web Simulation Tool Technical Notes 2014/05/03
Powering Microcontrollers from Industrial Supply Rails 2014/05/02
Current Ripple Factor of a Buck Converter 2014/04/03
Analysis of Buck Converter Efficiency 2014/03/02
SOT-23 FCOL Package Thermal Considerations 2014/03/01
ACOT® Stability Testing 2013/11/01

Multi-Phase Step-Down

Title Date Action
How PCB Mismatch Affects Common-N DCR Current Sensing in Multi-phase Applications 2021/07/14

Videos

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