Monolithic Power Systems, Inc. · NASDAQ:MPWR
Monolithic Power Systems — Technical Presentation (February 2026)
22 slides from Monolithic Power Systems's technical presentation, February 2026
Slide 1: Innovative 48V E-Fuses: Intelligent, Integrated Protection for the Software Defined Future
Innovative 48V E-Fuses: Intelligent, Integrated Protection for the Software Defined Future February 2026
Slide 2: Topics
Topics • The Limitations of Conventional Car Systems • 12V + Domain Architecture + Mechanical Fuse • Future Trends for Safer, Smarter, and More Efficient Car Systems • 48V + Zonal Architecture + E-Fuse • MPS Integrated 48V E-Fuse Solution
Slide 3: The Car of Today Is an Electronics Wonderland
The Car of Today Is an Electronics Wonderland
Slide 4: Conventional Domain Architecture
Conventional Domain Architecture Domain Architecture ADAS ECU ECU ECU ECU DCU ECU ECU ECU ECU IVI DCU DCU Body Gateway ECU ECU ECU ECU DCU DCU ECU ECU ECU ECU ECU ECU ECU ECU Powertrain Chassis Group ECUs Based on Function, Not Location Complex, Long Wiring Harness
Slide 5: The Function of Mechanical Fuses
The Function of Mechanical Fuses The Function of Mechanical Fuses: • Protect wires from heating up • Protect electronic units from fault condition, e.g. short circuits • Fault isolation • Diagnostic utility
Slide 6: Future Cars – Your Second Living Room
Future Cars – Your Second Living Room Electrochromatic Sunroof – 50W AR HUD – 30W L2-L4 ADAS – 200W to 800W OLED/LCD Displays – 100W Interior Mood Light – 50W USB/Wireless Charger – 300W Car Audio – 1000 to 2200W Seat Control Module – 200W
Slide 7: Change Is Overdue
Change Is Overdue Vehicle Low-Voltage Current Draw Over Time 250A Wiring Constrained 150A 50A 6V 12V 48V 1920s 1950s 2020s Future
Slide 8: Wire Savings
Wire Savings 600W Load Example 12V 48V 80% Smaller Size 50A 12.5A 10mm2 1.5mm2 80% Weight Reduction 108g/m 17g/m 50% Less Loss in Wiring 4.5W/m 1.9W/m
Slide 9: 48V Is the New 12V
48V Is the New 12V AC Compressor 10kW Starter Power Consumption Active Stabilization Electronic Power Steering Transition from 12V Braking System …with a 48V architecture Catalytic Converter Start/Stop 5kW Heated Seats Water Pump Rear Defroster Headlamps Heated Steering Wheel Audio System 1kW MY2023
Slide 10: Shift from Domain Architecture to Zonal Architecture
Shift from Domain Architecture to Zonal Architecture Domain Architecture Zonal Architecture ADAS Roof/Front ECU ECU ECU ECU ECU ECU ECU ECU DCU ZCU ECU ECU ECU ECU ECU ECU ECU ECU IVI DCU DCU Body Left ZCU Zone ZCU Right Gateway Gateway ECU ECU ECU ECU ECU ECU ECU ECU DCU DCU ZCU ECU ECU ECU ECU ECU
Slide 11: Shift from Mechanical Fuse to E-Fuse
Shift from Mechanical Fuse to E-Fuse Traditional Mechanical Fuse E-Fuse (Electronic Fuse) • Slow Response with High Fault Tolerance • Faster Response with Tighter Fault Tolerance • Non-Resettable • Resettable • No Additional Protection Features • Protects Against Harmful Voltage and Temperature • No
Slide 12: Architecture of 48V Zonal Control Unit with E-Fuse
Architecture of 48V Zonal Control Unit with E-Fuse 48V Battery 80V Protection & Monitor • Wire Saving with 48V and Zonal • Faster Communication Speed 48V 80V 80V eFuse 65V Buck Communication 80VeFuse 80V 80V eFuse eFuse E-Fuse 48V to 5V • Vast Protection and Diagnostics Processor Regulated 48V 80V e
Slide 13: Challenges for 48V E-Fuses
Challenges for 48V E-Fuses Traditional Mechanical Fuse E-Fuse (Electronic Fuse) • Joule Heating Principle • How to Mimic Mechanical Fuse Behavior in • No Electronics, No Power Consumption Semiconductor Devices? • No Expectation for Additional Protection • How to Reduce Power Consumption? and Diagnos
Slide 14: MPQ5884-AEC1
MPQ5884-AEC1 80V, 4.5mΩ, E-Fuse and Smart High-Side Power Switch cable cable VIN VIN VOUT Features DZ1 DZ2 MPQ5882 MPQ5884 load Built to Handle Tough Automotive Transients R1 • Load Dump Up to 80V EN EN +5V R2 • -60V Continuous Reverse Voltage Self-Protection TS TS R6 R3 R7 Cooler Thermals OLD OLD F
Slide 15: Fuse-Like Over-Current Protection and Short-Circuit Protection
Fuse-Like Over-Current Protection and Short-Circuit Protection MPS Proprietary Fuse-Like Protection Hardware-Configurable Fuse Curve tOFF Toff cable cable VIN VIN VOUT DZ1 MPQ5882 MPQ5884 DZ2 load Fuse-Like R1 Protection EN EN +5V R2 TS TS R6 R3 OLD OLD R7 FLT# Fault Fast off R4 CS CS R5 FUSE GND IL
Slide 16: Fuse-Like Protection Test Waveform
Fuse-Like Protection Test Waveform Hardware-Configurable Fuse Curve Test Waveform ILIM = 15A, IOUT = 25A, Δio=10A: VOUT Fuse FLT# IOUT (A) *Note:ΔIo=Io-ILIM
Slide 17: Low Quiescent Current (IQ) Mode
Low Quiescent Current (IQ) Mode • Secondary MOSFET for Low-IQ Mode • Actively Toggle OLD Pin to Enter Low-IQ Mode • EN = high, OLD = high • Automatically Exits Low-IQ Mode and Transitions to Normal Mode when the Load Current Increases, FLT# Pin Goes Low For System Report
Slide 18: Low-IQ Mode Test Waveform
Low-IQ Mode Test Waveform Low-IQ Mode Entry Automatic Low-IQ Mode Exit IOUT = 0.1A IOUT = 0.1A to 15A FLT# FLT# OLD VOUT OLD IOUT VOUT IOUT
Slide 19: Open-Load Detection
Open-Load Detection Open-Load Detection Mechanism Test Waveform VIN VOUT FLT# OLD • Open-Load Condition: • High Impedance Due to Bad Wire Connection • Short to Battery • Detection Mechanism: • Current Sourced by the VOUT Pin
Slide 20: Benefits of MPS Integrated 48V E-Fuses
Benefits of MPS Integrated 48V E-Fuses Legacy Approach MPS 100W E-Fuse Integration Unlocks Current Massive Benefits Controller Sensor Gate Drive Temp Protection & FET Precision-Tuned Diagnostics Sensor V, I, T Faster Response E-Fuse Sense MOSFET Vastly More Reliable Total System Monitoring Major Siz
Slide 21: Takeaways
Takeaways • The Limitations of Conventional Car Systems • 12V + Domain Architecture + Mechanical Fuse • Future Trends for Safer, Smarter, More Efficient Car Systems • 48V + Zonal Architecture + E-Fuse • The Benefit of MPS Integrated 48V E-Fuse • Fast Response Time with Tight Fault Tolerance • Protec
Slide 22: Thank you!
mrs Thank you!
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