EPC9171 Demonstration Board Quick Start Guide
●The EPC9171 demonstration board is an universal AC input voltage range and frequency isolated power supply, designed for USB PD3.1 systems and supports operation in Extended Power Range (EPR) Mode. It is capable of supplying 240 W maximum output power at 48 V output voltage and 5A load current. A power density of about 1.1 W/cm3 is achieved by employing, GaN power switches operated at high switching frequencies in both the primary and secondary circuits.
●The output voltage is variable over the whole Adjustable Voltage Supply (AVS) range of 15 V through 48 V as specified by the corresponding USB PD3.1 standard, when operating in constant voltage (CV) mode. A constant current (CC) mode with precise current control ensures that the output current never exceeds the selected current limit (5 A max.). This power supply topology building blocks consists of a two-phase interleaving boost converter PFC stage and an isolated LCC resonant power stage. This solution provides a higher power density than a conventional, three stage design typically consisting of active PFC, LLC and buck power stages.
●The interleaving PFC stage ensures high power factor and low AC line current harmonics to meet the harmonics requirements of the EMC standards such as IEC 61000-3-2 / Class A. It supports full-power operation over a wide input voltage range of 90–265 VACRMS, while optimizing the light load efficiency by means of load dependent PFC phase control. The Critical Conduction Mode (CrCM) operation of the PFC stage in combination with 650 V GaN power switches enable high frequency operation well above 200 kHz. The power density advantage is gained by the elevated switching frequency that requires small physical dimension PFC inductors.
●The LCC resonant power stage, operated from the pre-regulated PFC bus voltage, provides both the galvanic isolation and the output voltage/current regulation. Unlike the well-known LLC resonant power stages, which suffers from limited output voltage range, the LCC resonant converters are ideal for wide output voltage range applications with limited switching frequency variation, that also features superior constant-current characteristics.The LCC resonant converter also utilizes 650V GaN switches in primary high voltage circuit in this design and operates in the frequency range of 350 to 580 kHz, which helps to reduce the size of the power transformer as well as that of the other passive components in the resonant circuit.
●A synchronous rectifier stage employs a pair of 100 V rated, 3.2 mΩ, EPC2218 GaN switches on the secondary side of the LCC stage. The GaN switches are driven by fast synchronous rectifier controllers to minimize the losses over the whole output voltage and current range and allow a simple yet effective thermal design.
|
|
|
|
User's Guide |
|
|
|
|
Please see the document for details |
|
|
|
|
|
|
|
|
|
|
|
English Chinese Chinese and English Japanese |
|
|
2022/12/14 |
|
|
Revision 1.0 |
|
|
|
|
|
1.8 MB |
- +1 Like
- Add to Favorites
Recommend
- EPC Introduces EPC9157 48V to 12V Demo Board Featuring EPC eGaN FETs and New Renesas DC-DC Controller
- EPC‘s New EPC9165 Bidirectional Converter that Delivers 2kW with 96.8% Peak Efficiency
- Design High-Performance Class-D Audio Amplifiers with EPC’s New Reference Design EPC9192 and eGaN FETs
- Sharge Selects GaN FETs EPC2218 from EPC for High-power USB PD Charger Retro 67 to Achieve the Most Efficient Power Conversion
- EPC Announces EPC9193 eGaN® FET Based 3-Phase BLDC Motor Drive Inverter for Low-Cost E-Bikes, Drones and Robotics
- EPC Launches a 3-phase BLDC Motor Drive Inverter EPC9173 with Embedded Gate Driver Function and a Floating Power GaN FET with 3.3mΩ RDS(on)
- Sekorm Became an Authorized Distributor of EPC(Efficient Power Conversion), Which Brings GaN FET Products
- EPC GaN FETs Enable 75 - 231Ampere Laser Diode Control in Nanoseconds for Advanced Automotive Autonomy
All reproduced articles on this site are for the purpose of conveying more information and clearly indicate the source. If media or individuals who do not want to be reproduced can contact us, which will be deleted.
Integrated Circuits
Discrete Components
Connectors & Structural Components
Assembly UnitModules & Accessories
Power Supplies & Power Modules
Electronic Materials
Instrumentation & Test Kit
Electrical Tools & Materials
Mechatronics
Processing & Customization
