Boost Buck DC-DC Converter 8-40V 13.8V Automotive

Product Overview

Our SDSJ Series boost buck DC-DC converter is a high-performance, non-isolated power conversion solution designed for stable 13.8VDC output across an ultra-wide 8-40VDC input range. With rated power spanning from 41.4W to 759W and output current options from 3A to 55A, this series delivers exceptional energy efficiency and consistent performance for systems requiring strict voltage stability and low power consumption. Engineered for demanding environments, our 8-40V to 13.8V DC-DC converter is the ideal power solution for business partners seeking reliable, long-lasting power components for their industrial and mobile equipment.

Technical Parameters

Model No.	Input voltage	Output voltage	Output current	Rated power	Efficiency	Size
SDSJ8-4013R803	8-40VDC	13.8VDC	3 Amps	41.4W	89.60%	64*57*22mm
SDSJ8-4013R805	8-40VDC	13.8VDC	5 Amps	69W	93.50%	74*74*32mm
SDSJ8-4013R810	8-40VDC	13.8VDC	10 Amps	138W	93.50%	74*74*32mm
SDSJ8-4013R820	8-40VDC	13.8VDC	20 Amps	276W	96.20%	74*74*32mm
SDSJ8-4013R825	8-40VDC	13.8VDC	25 Amps	345W	96.90%	100*80*39mm
SDSJ8-4013R830	8-40VDC	13.8VDC	30 Amps	414W	96.40%	100*80*39mm
SDSJ10-4413R840	10-44VDC	13.8VDC	40 Amps	552W	96.60%	140*120*42.5mm
SDSJ10-4413R855	10-44VDC	13.8VDC	55 Amps	759W	95.80%	140*120*42.5mm

Core Advantages for Our Business Partners

Industry-Leading Energy Efficiency

With peak efficiency up to 96.9% and a typical 95% efficiency at 12V input, our automotive DC-DC power converter minimizes energy loss, reduces operating costs for end-users, and lowers thermal stress to extend service life, creating a strong competitive edge for your product lines.

Ultra-Robust Environmental Adaptability

IP68 waterproof and dustproof rating enables this high efficiency DC-DC boost buck converter to perform reliably in harsh, moisture-heavy, and vibration-prone environments, eliminating frequent replacements and after-sales maintenance for your projects.

Comprehensive Safety Protection

Built-in short circuit, over load, and over temperature protections safeguard both the converter and connected equipment, reducing failure rates and ensuring stable operation in continuous full-load scenarios.

Target Industries & Applications

This 13.8V DC power converter for vehicles is widely deployed across sectors including automotive electronics, telecommunications infrastructure, logging vehicles, forklifts, industrial automation systems, marine equipment, and off-grid power systems. It is perfectly suited for any application requiring stable voltage conversion in fluctuating input voltage environments.

Quality Assurance & Compliance

All our IP68 waterproof DC-DC converter units are designed to meet CE and RoHS standards, with 100% full load burn-in testing before shipment. We use high-reliability NCC and NICHICON internal capacitors to ensure long-term stability, backed by a 3-year global warranty to give our trade clients full peace of mind for bulk procurement.

Packaging, Shipping & Order Terms

Each unit is packed in anti-static packaging with reinforced export cartons to prevent damage during transit. We support global shipping via sea, air, and express courier, with flexible lead times tailored to your project schedule. We accept low minimum order quantities for trial orders, and offer custom parameter adjustments for bulk procurement to meet your unique project requirements.

FAQ

What input voltage ranges are supported?

The core series supports 8-40VDC wide input, with high-power models supporting 10-44VDC input, compatible with 12V, 24V, and 36V battery systems.

What protection functions are included?

All models come with standard short circuit, over load, and over temperature protection, with auto-recovery function after fault removal.

Do you offer custom solutions?

Yes, we provide custom parameter tuning, housing adjustments, and connector modifications for bulk orders to fit your specific application needs.

Get Your Custom Quotation

Contact our technical sales team today to get a personalized quotation for our 8-40V to 13.8V boost buck DC-DC converter. We offer competitive bulk pricing, free technical support, and sample testing services to help you find the perfect power solution for your project.

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