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738µH ETD34 LLC Resonant Transformer with 97.5% Efficiency for High Frequency Power Conversion
Place of Origin:
China
Brand Name:
CHIPSEN
Certification:
UL/cUL Class B/F/H, VDE, CQC
Model Number:
ETD34
Minimum Order Quantity:
100PCS
Price:
$2 - 5/ Piece,1000-10000pcs
Packaging Details:
Small transformers: blister tray packaging + export cartons; Large transformers packed on wooden pallets. Custom packaging available upon request.
Delivery Time:
7-22 wark days
Payment Terms:
T/T
Supply Ability:
5000 pcs per day
Inquiry Now
Get A Quote
Specifications
Highlight Features
738µH LLC Resonant Transformer
,97.5% Efficiency High Frequency Power Transformer
,ETD34 LLC Transformer
Magnetizing Inductance:
738 µH ± 10%
Power Rating:
300W - 600W (Continuous)
Operating Frequency:
100 KHz (Resonant: 80-150 KHz)
Dielectric Strength:
3,000V AC (Pri To Sec)
Core Size:
ETD34
Pin Configuration:
14-Pin Through Hole (DIP)
Product Description
Product Description
The ETD34 738 µH High-Power LLC Transformer is engineered for high-efficiency, high-frequency power conversion in demanding electronic systems. Designed specifically for LLC resonant topology, it delivers exceptional power density, low electromagnetic interference (EMI), and stable electrical isolation. Whether you are developing cutting-edge industrial automation, advanced robotics, drones, or new energy platforms, this transformer provides the high reliability and thermal performance your critical applications require.
| Parameter Category | Technical Parameter | Typical Standard Spec | Customizable Range (OEM/ODM) | Customer Concern / Purpose | Impact on Design | Testing Condition |
|---|---|---|---|---|---|---|
| Electrical | Magnetizing Inductance (Lm) | 738 µH ± 10% | 200 µH – 1.5 mH (Customizable) | Defines LLC resonant frequency & ZVS range | Core gap adjustment | 100 kHz, 1.0V |
| Electrical | Resonant Inductance / Leakage (Lr) | 100 µH – 150 µH (or integrated) | 10 µH – 250 µH | Eliminates external resonant inductor | Winding structure & spacing | 100 kHz, 1.0V (Short Sec) |
| Electrical | Operating Frequency (f) | 100 kHz (Resonant: 80–150 kHz) | 50 kHz – 300 kHz | Determines size, efficiency & switching loss | Ferrite material selection | Operating range |
| Electrical | Power Rating (Pout) | 300W – 600W (Continuous) | 100W – 800W Max | Matches system load capacity requirements | Thermal management & wire gauge | Ta = 40°C, Forced air/Convection |
| Electrical | Input Voltage (Vin) | 380V – 420V DC (PFC Output) | 100V – 800V DC | System bus voltage compatibility | Primary turns & insulation rating | PFC stage compatibility |
| Electrical | Output Voltage (Vout) | 24V / 48V DC (Typical) | 5V – 120V DC (Single/Multi) | Matches downstream load / battery pack | Secondary turns ratio & tapping | Full load condition |
| Electrical | Output Current (Iout) | 10A – 25A | Up to 50A | Conductor sizing & thermal dissipation | Litz wire / Triple Insulated Wire | Rated power output |
| Electrical | Turn Ratio (Np : Ns) | 15 : 2 : 2 (Example) | Customized per Vin/Vout | Sets voltage gain in LLC network | Winding layout & coupling | Calculated |
| Isolation & Safety | Hi-Pot / Dielectric Strength | 3,000V AC (Pri to Sec) | 1,500V AC – 4,000V AC | Safety certification compliance (UL/CE) | Margin tape & insulation class | 50/60Hz, 60s, <5mA leakage |
| Isolation & Safety | Insulation Class | Class B (130°C) / Class F (155°C) | Class B, F, H (180°C) | Thermal limit and operating lifetime | Wire insulation & triple wire | Thermal limit |
| Mechanical & Core | Core Size & Type | ETD34 (Ferroxcube/TDG/TDK) | ETD29 / ETD34 / ETD39 / ETD44 | Physical footprint and power capability | Bobbin & core selection | Physical dimension |
| Mechanical & Core | Pin Configuration / Mounting | 14-Pin Through Hole (DIP) | Custom Pinout / Flying Leads | PCB layout compatibility & automated assembly | Bobbin design | PCB mounting |
| Thermal | Operating Temperature Range | -40°C to +125°C | -40°C to +155°C | Reliability in extreme environments | Varnishing & potting compound | Ambient + Self-heating |
Key Features
- Precision Inductance: 738µH magnetizing inductance optimized for LLC resonant converters.
- High Efficiency: Low core and copper losses, maximizing overall system power conversion efficiency.
- Compact ETD34 Core: Ideal power-to-size ratio, saving valuable PCB space while maintaining high output.
- Superior Thermal Performance: Designed to withstand continuous high-power operation with efficient heat dissipation.
- Robust Electrical Isolation: High dielectric strength ensures system safety and long-term stability.
- Flexible Customization: Built to meet custom mechanical, electrical, and pinout requirements.
Applications
- Industrial Equipment: High-power industrial power supplies, laser cutters, and motor drives.
- Robotics & Automation: Servo motor power controllers, AGV/AMR wireless chargers, and robotic arm power modules.
- Drones & UAVs: Heavy-payload drone power systems and high-speed ground charging stations.
- New Energy & Automotive: EV charging modules, solar micro-inverters, and energy storage systems (ESS).
Why Choose Us
Product Advantages
- Optimized LLC Performance: Specifically designed to reduce switching losses (ZVS) and boost system energy conversion.
- Industrial-Grade Reliability: Engineered to withstand harsh environments, thermal stress, and high vibration.
- Full Compliance: Built to international safety and quality standards (UL, CE, RoHS) for rapid global integration.
Company Advantages
- OEM/ODM Expertise: Full-service engineering support—from custom prototyping to mass production.
- Rigorous Quality Control: 100% tested for inductance, leakage inductance, dielectric strength, and thermal limits before shipment.
- Agile Supply Chain: Fast prototype turnaround (3–5 days) and dependable global delivery to keep your projects on schedule.
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