Is Varnix a manufacturer or a trading company?

Varnix Technology Co., Ltd. is a power electronics manufacturer founded in 2003 with in-house welding, assembly, aging test and inspection lines, plus an export team. Our factory has been verified onsite by SGS.

What is the minimum order quantity?

Most catalog inverters and DC-DC converters start from 1 to 10 units depending on the model. OEM branding, custom voltages and custom housings are quoted per project volume.

Which certifications do your products carry?

Our quality management system is certified to ISO 9001:2015, and listed product series carry CE, RoHS and FCC certification. Test reports can be supplied with each project.

Can you customize input voltage, output power or branding?

Yes. We offer full, design-based and sample-based customization, including input and output voltage, power rating, housing, connectors, logo and packaging.

How do you ship to overseas buyers?

We ship worldwide under FOB, CFR, CIF, EXW, FCA, CPT, DDP, DDU and express delivery terms. Selected DC-DC converters are stocked in our US overseas warehouse for faster delivery.

What after-sales support do you provide?

A dedicated after-sales team responds 24/7. Warranty terms are written into every contract, and confirmed quality defects are resolved by repair, replacement or refund.

YUCOO Boost Buck Converter 9-34V 12V to 12V 35A 40A DC Voltage Regulator DC DC Converter Module

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YUCOO Boost Buck Converter 9-34V 12V to 12V 35A 40A DC Voltage Regulator DC DC Converter Module

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Product Description

You need to communicate your needs and place an order in advance, and then you can better buy your own suitable products.

YUCOO Hot Models Overview

24V to 12V

48V to 12V

12V/24V to 5V

48V to 24V

12V to 48V

12V to 24V

24V to 48V

12V to 12V

bare board

12V to 5V USB

DC DC charger

OEM TYPE

We are the Manufacturer of Different DC-DC Converters.
Non-Isolation and Isolation both available.
1W-3KW can be made with different specifications.

Product Description

Constant voltage design

SMT Process

Non-Isolated Module

Wide input range

Built-in EMI filter, low ripple noise

100% full load burn-in test

Certificates: CE

Waterproof level: IP67

Protections: Short circuit / Over load / Over voltage / Automatic recovery work

Ultra compact size, light weight, high reliability

1 year warranty, lifetime up to 100,000 hours

Product Parameters

Product Name	12V Dc Voltage Regulator
Model	YK-DD9-34S1235	YK-DD9-34S1240
Input voltage	12VDC	12VDC
Input voltage range	9-34VDC	9-34VDC
Output voltage	12VDC	12VDC
Output current	35A	40A
Power	420W	480W
Efficiency	95%
Working temperature	-20℃ ~ +65℃
Waterproof rating	IP67
Protections	Short Circuit, Overtemp, Overload, Overvolt
Feature	With fan cooling
Size	10410040MM	13512040MM
Weight	650G	650G
To learn more about our products, please send an inquiry.

Details Images

Recommend Products Range

BUCK DC-DC CONVERTER MODEL LIST
Model Series	Input-V	Output-V	Output Current
YK-DD1224S5**	12V/24V	5V	3A\|5A\|10A\|15A\|20A\|30A\|40A\|50A\|60A
YK-DD24S12**	24V	12V	1.5A\|3A\|5A\|8A\|10A\|15A\|20A\|30A\|40A\|50A\|60A\|85A\|100A
YK-DD24S13.8**	24V	13.8V	5A\|10A\|15A\|20A\|30A\|40A\|50A\|60A
YK-DD24S19**	24V	19V	5A\|10A\|15A
YK-DD36S12**	36V	12V	5A\|10A\|15A\|20A\|30A\|50A\|60A
YK-DD48S5**	48V	5V	5A\|10A\|15A\|20A
YK-DD48S12**	48V	12V	5A\|10A\|15A\|20A\|30A\|50A\|60A
YK-DD48S13.8**	48V	13.8V	5A\|10A\|15A\|20A\|30A\|40A\|50A\|60A
YK-DD48S19**	48V	19V	5A\|8A\|10A
YK-DD48S24**	48V	24V	3A\|5A\|10A\|15A\|20A\|30A\|40A\|50A
YK-DD60S12**	60V	12V	5A\|10A\|15A
YK-DD60S24**	60V	24V	5A\|10A
BOOST DC-DC CONVERTER MODEL LIST
Model Series	Input-V	Output-V	Output Current
YK-DD12S24**	12V	24V	1A\|2A\|3A\|5A\|8A\|10A\|15A\|20A\|25A\|30A\|40A\|50A
YK-DD12S19**	12V	19V	5A\|8A\|10A\|15A\|20A
YK-DD12S28**	12V	28V	3A\|5A\|8A\|10A\|15A\|20A\|25A\|30A\|40A
YK-DD12S48**	12V	48V	1A\|2A\|3A\|4A\|8A\|10A\|15A\|20A
YK-DD24S48**	24V	48V	3A\|5A\|10A\|20A\|30A\|40A
YK-DD24S36**	24V	36V	5A
BUCK & BOOST DC-DC CONVERTER MODEL LIST
Model Series	Input-V	Output-V	Output Current
YK-DD12S12**	8-40V	12V	1A\|2A\|3A\|5A\|6A\|10A\|15A\|20A\|25A
YK-DD12S13.8**	8-40V	13.8V	3A\|5A\|10A\|15A\|20A\|25A
YK-DD24S24**	9-40V	24V	2A\|3A\|4A\|6A\|10A\|15A

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Frequently Asked Questions (FAQ)

What is the conversion efficiency and heat dissipation performance of this DC-DC regulator?

The regulator features a high conversion efficiency of up to 95%, which minimizes heat generation. It also comes equipped with an integrated cooling fan to ensure stable thermal performance under heavy electrical loads.

What types of safety protections are integrated into the module?

Our converters incorporate comprehensive protection mechanisms, including short circuit protection, over-temperature protection, overload protection, and over-voltage protection, with automatic recovery once normal operating conditions resume.

Is the converter suitable for outdoor or harsh environments?

Yes, the device features an IP67 waterproof rating and operates stably across a wide temperature range of -20℃ to +65℃, making it suitable for demanding industrial and outdoor applications.

Do you provide OEM or customized specification services?

Yes, we offer tailored design and OEM manufacturing services. We can manufacture isolated and non-isolated modules ranging from 1W up to 3KW to meet custom voltage and power requirements.

What quality testing and certifications apply to these converters?

All units undergo 100% full load burn-in testing and feature built-in EMI filtering with low ripple noise. Products are fully CE certified, offering a design lifetime of up to 100,000 hours with a standard 1-year warranty.