Dongguan Chipsen Electronics Technology Co., Ltd.
                                                                                                           
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19 Years
Since 2007
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Custom ER28 High Frequency Transformer for DC-DC Buck-Boost Converter

Price Negotiable
Price: $0.88-$1.59
MOQ: 1000 pcs
Delivery Time: 15-30 working days
Brand: Chipsen
Product Description

1. Product Introduction

The Chipsen ER28 series is a high-performance High Frequency Transformer engineered for demanding industrial power conversion. Featuring a specialized ER magnetic core structure, it provides a perfect balance between high power density and compact footprint. Designed to support high-frequency switching, this transformer is ideal for DC-DC converters where efficiency and EMI suppression are critical for system reliability.

Technical Specifications

Parameter Item Specification Details
Core Type ER28 (Ferrite Core)
Keywords High Frequency Transformer
Operating Frequency 20kHz - 500kHz
Power Rating Up to 150W (Topology Dependent)
Input Voltage Customizable (AC/DC Range)
Insulation Class Class B (130°C) / Class F (155°C)
Safety Certification UL (E332338), CE, RoHS Compliant
Efficiency >95% at Rated Load
Dielectric Strength 3000VAC / 1min (Primary to Secondary)
Storage Temperature -25°C to +85°C

2. Product Features

  • Optimized EMI Performance: Specialized winding techniques to significantly cut EMI noise in your circuits.
  • High Power Density: Compact ER28 design delivers maximum power without sacrificing valuable PCB space.
  • Low Leakage Inductance: Enhances switching efficiency and reduces heat dissipation in power stages.
  • Industrial Grade Insulation: UL-recognized materials ensure long-term stability in harsh industrial environments.

3. Product Application

Our ER28 High Frequency Transformers are widely utilized in high-reliability industrial sectors:

  • Industrial Inverters: Power stage for DC-AC conversion in automation systems.
  • Photovoltaic (PV) Inverters: Energy management for solar power arrays.
  • AI Servers & Data Centers: High-efficiency power modules for high-speed computing.
  • Telecommunication: Base station power supplies and networking equipment.
  • Medical Equipment: Isolated power conversion for sensitive diagnostic devices.
  • EV Chargers: On-board charging (OBC) and DC fast-charging stations.

4. Why Choose Chipsen?

Product Advantages

  • Customized Design (ODM/OEM): Tailored electrical parameters and pin configurations to match your specific Buck-Boost topology.
  • Energy Efficiency: Ultra-low core loss ferrite materials to maximize your system's energy output.
  • Certified Reliability: Fully compliant with UL, CE, and RoHS, passing strict vibration and thermal shock tests.

Company Advantages

  • 26 Years Expertise: Founded in 2000, specialized in mid-to-high-end industrial magnetic components.
  • Massive Production Scale: 10,000㎡ self-owned factory with 8 automated production lines.
  • North American Market Leader: 50% of our exports go to North America, serving top-tier industrial brands.
  • Rapid Engineering Support: Direct communication with senior engineers for quick technical evaluation.

5. Frequently Asked Questions (FAQ)

Q1: Can you customize the turns ratio and pin layout for ER28?
A: Yes, we provide full ODM/OEM services. You can send your specification, and our engineers will design the winding and footprint to fit your PCB.
Q2: What is the typical lead time for bulk orders?
A: For bulk orders of 1,000 PCS or more, the lead time is usually 3-4 weeks, depending on component availability.
Q3: What payment methods do you support for international orders?
A: We support T/T (Telegraphic Transfer), PayPal, and Western Union for your convenience.
Q4: Are your transformers UL certified?
A: Yes, our products carry the UL mark (E332338) and comply with CE and RoHS standards for global market access.
Q5: What is your Minimum Order Quantity (MOQ)?
A: Our standard MOQ for ER series transformers is 1,000 PCS.
Q6: Can you provide samples for testing before mass production?
A: Absolutely. We encourage sample testing to verify electrical performance in your specific application.
Q7: How do you handle EMI issues in the design?
A: We use sandwich winding methods and specialized shielding to minimize parasitic capacitance and cut EMI noise.
Q8: Is this transformer suitable for AI server power supplies?
A: Yes, the ER28 is highly recommended for high-efficiency power modules in AI servers and data center infrastructure.

Get in Touch

Have questions about our products or want to discuss a custom order? Our team is ready to help you.

Company Dongguan Chipsen Electronics Technology Co., Ltd.
Location No. 234, Changhuang Road, Changping Town, 523586, Dongguan, Guangdong, China
Contact Person Nick Cheng

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