01
I know the application
Start with the system context—BMS, ECU, ADAS, infotainment or industrial control—and identify the power questions that matter there.
BMS · ECU · ADAS · Industrial control
Explore applicationsPower electronics design guidance
Find the right power design path for your application
Start from your application, electrical requirement, known component or design question. Hengshun connects each starting point to relevant power solutions, component guidance, technical resources and engineering support.
Application or requirement → architecture → component decisions → engineering support
Choose your starting point
Where would you like to start?
Use the information you already have. You do not need a finished specification to find a useful path through the site.
02
I know the power requirement
Start with the conversion or management need, then review suitable architectures, operating limits and design trade-offs.
12 V to 5 V · 24 V auxiliary · 48 V step-down
Explore solutions03
I know a component or part number
Use a reviewed component guide to understand where the device fits and what still needs to be checked in the complete design.
TPS54260-Q1 · LM5161-Q1 · LM76002-Q1
Browse component guides04
I need engineering help
Share an incomplete requirement or a specific design question so the next engineering decision can be scoped clearly.
Architecture · selection · review planning
Request a designHow Hengshun works
From requirement to engineering decision
Use Hengshun as a guided path rather than a document library. Each step narrows the question and makes the next decision more concrete.
Common design paths
See how the content connects.
These examples use only currently published applications, solutions, component guides and technical guides.
Journey 01
Automotive BMS auxiliary power
Move from the BMS operating context to conversion architecture, a calculated reference design and the selected regulator guidance.
- BMS Power
- DC-DC Power Conversion
- 12/24 V to 5 V BMS auxiliary reference design
- LM5161-Q1 design guide
- Request a Design
Journey 02
24 V / 48 V wide-input conversion
Connect the industrial or zone-controller environment with wide-input architecture and verified component-selection questions.
- Industrial Power
- DC-DC Power Conversion
- 36 V / 48 V to 12 V wide-input reference design
- 24 V / 48 V wide-input guide
- Relevant component guides
- Request a Design
Journey 03
Known regulator evaluation
Start from a part number, then check its application fit, related solution context and the engineering guidance needed for a decision.
Follow this pathFour main content entries
Choose the route that matches what you know.
Applications
Start with the system you are designing.
See the power-design topics most relevant to the operating environment, loads, states and fault behavior of the application.
Explore Applications
Solutions
Start with a power-management need.
Review the architecture and engineering considerations behind conversion, regulation, protection, charging and distribution.
Explore Solutions
Component Guides
Start with a known part number.
Review where the device fits, the design questions it raises and the related application and solution context.
Browse Component Guides
Technical Guides
Start with an engineering problem.
Review practical design principles, trade-offs, protection questions and validation considerations.
Read Technical GuidesFeatured reviewed resources
Use engineering guidance that is available now.
Reviewed component design guides are now available for selected parts; additional guides remain in preparation. Reviewed component and technical guides are available now, with additional engineering resources being expanded progressively. The current collection includes 12 calculated reference designs, 8 component guides and three technical guides.
Reference Designs
Explore all 12 reference designs01 /
Calculated reference design
12V to 5V / 3A Automotive Buck Converter
Calculated automotive power reference design for a protected 6–28 V input and a 5 V / 3 A output using LM61440-Q1. It publishes the locked power-stage and front-end calculations while keeping capacitor derating, transient dynamics, thermal, EMI and bench evidence explicitly open.
Calculated designNot bench validated
Review the design 02 /Calculated reference design
24V to 5V / 3A Industrial Wide-Input Buck
Calculated engineering publication candidate for a protected 24 V industrial input and a 5 V / 3 A output using LM76003RNPT. It records the locked input boundary, power-stage calculations, explicit BOM maturity and an unexecuted validation plan without making a board, surge, thermal, EMI or compliance claim.
Calculated designNot bench validated
Review the design 03 /Calculated reference design
36–60 V to 12 V / 1 A Wide-Input DC-DC Reference Design
Calculated synchronous buck reference design for a 36–60 V continuous input and a 12 V / 1 A output using LMR38020-Q1. It publishes the power-stage calculations and BOM maturity while keeping front-end protection explicitly provisional.
Calculated designNot bench validated
Review the design 04 /Calculated reference design
12 V Automotive Always-On 3.3 V / 300 mA Ultra-Low-IQ Buck Reference Design
Calculated LM5164-Q1 always-on automotive buck reference design for a protected 6–36 V node and a 3.3 V / 300 mA keep-alive rail, with device-IQ context, explicit calculation provenance and fifteen planned, unexecuted validation items.
Calculated designNot bench validated
Review the design 05 /Calculated reference design
48 V Zonal Controller Dual-Domain Power Architecture
Application-first architecture for a protected 48 V vehicle backbone that keeps local 48 V loads, retained 12 V legacy loads and low-voltage auxiliary rails under explicit protection, fault and power-state ownership.
Calculated designNot bench validated
Review the design 06 /Calculated reference design
12/24V to 5V BMS Auxiliary Power Reference Design
Calculated reference design for a protected 7–36 V input synchronous buck stage using LM5161-Q1 to produce a 5 V / 1 A BMS auxiliary rail. It separates raw battery events from protected VIN, shows the selected values and margins, and identifies the simulation, prototype and compliance evidence that is still required.
Calculated designNot bench validated
Review the design 07 /Calculated reference design
ADAS Camera Power Architecture — 12V to 5V to 3.3V
Calculated reference design for a protected 12 V automotive source feeding a 5 V / 0.65 A LM65625-Q1 buck stage and a 3.3 V / 0.40 A LM1117-Q1 rail. The architecture, calculations and BOM maturity are documented; board, thermal, EMI, noise, PSRR and camera-module validation have not been executed.
Calculated designNot bench validated
Review the design 08 /Calculated reference design
20–60 V to Isolated 15 W Industrial Auxiliary Flyback Reference Design
Calculated primary-side-regulated isolated flyback publication candidate for a protected 20–60 V industrial source and a 16.4 V / 0.9 A / 14.76 W auxiliary output using LM5185QPWPRQ1. It preserves the official 20–60 V, 16.4 V / 1 A TI EVM as reference evidence while keeping the Hengshun target, BOM maturity and thirteen unexecuted validation gates explicit.
Calculated designNot bench validated
Review the design 09 /Calculated reference design
24 V Input to +15 V / -5 V Isolated SiC Gate-Driver Bias Supply
Calculated UCC14240-Q1 isolated gate-driver bias publication candidate for a protected 24 V auxiliary rail. It converts the official 21–27 V normal input range into +15 V and -5 V rails for a calculated 1.25 W load while keeping the project-defined 30 V protected-node event, basic-isolation boundary, provisional passives and unexecuted validation work explicit.
Calculated designNot bench validated
Review the design 10 /Calculated reference design
12 V to 0.8 V / 70 A Two-Phase High-Current Point-of-Load Power Module
Calculated TPSM8D6C24 high-current point-of-load publication candidate for industrial FPGA and ASIC compute. One two-phase module converts a protected 5–16 V intermediate bus to a 0.8 V / 70 A design target while keeping thermal derating, copper and interconnect design, capacitor selection, PMBus configuration and all physical validation explicitly open.
Calculated designNot bench validated
Review the design 11 /Calculated reference design
6–18 V to 24 V / 2 A Automotive Boost Converter
Calculated LM5155-Q1 non-synchronous boost reference design for a protected 6–18 V automotive input and 24 V / 2 A output, with explicit component maturity and unexecuted validation boundaries.
Calculated designNot bench validated
Review the design 12 /Calculated reference design
5–20 V Input to 2S Li-Ion / 3 A Buck-Boost Charger with NVDC Power Path
Calculated BQ25798 four-switch buck-boost charger reference design for a 5–20 V source, a 2S Li-ion pack and an NVDC system rail, with source-limited low-line behavior and explicit evidence boundaries.
Calculated designNot bench validated
Review the design Component Guides
Browse all 8 component guidesLM65625-Q1Low-EMI automotive synchronous buck converterLM5161-Q1Wide-input synchronous buck / Fly-Buck converterTPS54260-Q1Automotive non-synchronous buck converterLM76002-Q1Automotive synchronous buck converterLMR38020-Q1High-voltage automotive synchronous buck converterLM5012-Q1High-voltage non-synchronous buck converterLM61440-Q1Automotive synchronous buck converterLM74930-Q1Automotive surge-stopper and ideal-diode front-end controller
Technical Guides
View all three01 /
How to Select a Buck Converter for Automotive Applications
A requirements-led framework for selecting an automotive buck converter. The guide connects the vehicle input envelope and load profile with conversion ratio, operating mode, magnetics, thermal limits, EMI layout, protection, qualification evidence and supply-lifecycle review.
Explore 02 /Automotive Power Supply Design: Input Voltage, Load Dump and Transients
An engineering framework for defining automotive power-input conditions beyond nominal battery voltage. It organizes supply states, transient categories, reverse polarity, front-end protection, regulator survivability, energy handling, layout and validation without asserting compliance to an unspecified standard.
Explore 03 /Wide-Input DC-DC Design for 24V and 48V Systems
A practical design framework for non-isolated wide-input DC-DC conversion in 24 V and 48 V systems. It covers source-envelope definition, topology boundaries, device-voltage margin, high-ratio switching, magnetics, thermal and EMI decisions, protection and validation.
ExploreEngineering support
Need help mapping a requirement to a practical power architecture?
Share the application, input and output requirements, power level, operating environment and project questions. Hengshun can use that context to guide the next engineering step.