Automotive Power System Solution

Automotive Application

Description

AEC-Q100 qualified power management solution for automotive ECUs, ADAS systems, and body electronics with comprehensive safety features.

Core Advantages

Full AEC-Q100 Grade 1 qualification (-40°C to +125°C)
Cold crank operation with ultra-low dropout
Integrated diagnostics and safety features
ISO 26262 functional safety support
Long-term supply commitment for automotive lifecycle

Recommended Bill of Materials (BOM)

Item Part Number Description Quantity Datasheet
1 📄 Download
2 📄 Download

Applications

Body control modules
ADAS systems
Infotainment
LED lighting
Electric power steering
Battery management

Technical Specifications

Input Voltage
3.5V to 42V (cold crank to load dump)
Output Rails
5V/8A, 3.3V/300mA
Operating Temperature
-40°C to +125°C (ambient)
Qualification
AEC-Q100 Grade 1
Protection
OVP, OCP, OTP, UVLO, short-circuit
Diagnostics
Power good, fault reporting

Customer Success Stories

| Body Control Module

Challenge

Needed AEC-Q100 qualified power solution supporting cold crank (3.5V) to load dump (42V) with functional safety requirements.

Solution

Implemented MPQ8862-AEC1 with external protection and MPQ8903-AEC1 for MCU supply with comprehensive diagnostics.

Results

  • Passed AEC-Q100 Grade 1 qualification
  • Achieved ASIL-B functional safety rating
  • Zero field failures over 3 years production
  • Reduced BOM cost by 15% vs competitor solution

FAE Expert Insights

S

Senior FAE

Applications Engineer

10+ years

Professional Insights

Automotive power design requires careful attention to transient protection, thermal management, and functional safety. Always use AEC-Q100 qualified parts and validate across full temperature and voltage ranges including cold crank and load dump conditions. Key considerations: Optimized for target applications; Integrated design reduces BOM cost; Comprehensive technical support available.

Key Takeaways

  • Optimized for target applications
  • Integrated design reduces BOM cost
  • Comprehensive technical support available

Decision Framework

Decision Framework
Steps:
  1. Evaluate requirements
  2. Compare solutions
  3. Consult FAE

Ready to Implement This Solution?

Contact our FAE team for design support and quotes

Contact Us Now

Frequently Asked Questions

What is the difference between AEC-Q100 grades?

AEC-Q100 defines temperature grades: Grade 0 (-50°C to +150°C), Grade 1 (-40°C to +125°C), Grade 2 (-40°C to +105°C), Grade 3 (-40°C to +85°C). Most automotive under-hood applications require Grade 1. Grade 0 is for extreme environments. All MPS automotive products meet at least Grade 1 requirements with comprehensive qualification testing.

Select Grade 1 for most automotive applications. Contact us for Grade 0 requirements.

How do I handle cold crank conditions?

Cold crank requires power supplies to operate at 3.5V or lower input. Key design considerations: 1) Select converters with 100% duty cycle capability. 2) Use converters with ultra-low dropout (LDO mode). 3) Ensure sufficient input capacitance for holdup. 4) Consider pre-boost for critical systems. MPS MPQ8862 and MPQ8636 support cold crank with 100% duty cycle operation down to 3.5V.

Contact our automotive FAE team for cold crank power architecture recommendations.