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? Asymmetric half-bridge AC-DC power management chip from Teco as aThe industry's only fully encapsulated single-chip AHB solution, with far fewer peripherals than competing solutions, low debugging difficulty, and overall costs far lower than competing solutions.
? In this article, we will present a paper based on theA 140W PD solution centered on the Dongke AHB chipIt features a minimalist periphery, high power density, and diverse output configurations, making it suitable for a wide range of application scenarios, such as laptop and tablet adapters, two-wheeled electric vehicle chargers, LED power supplies, and more.
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Dongke 140W AHB PD Program Sample Version
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Program overview
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Eastco Semiconductor's 140W AHB PD solution utilizes thedk8715bd+dk5v100r05vmSleeve material, using Dongke asymmetric half-bridge AC-DC power switching chip. The solution supports a variety of output voltage and current configurations to meet the needs of different devices, and has a comprehensive protection mechanism to ensure safe use.
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Program features
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? High efficiency -End-of-board efficiency up to 95.4%
? High power density: Bare metal power density of 1.82W/cm3.
? PCBA size: 66*51*24mm
? Upper tube adaptive shutdown, lower tube adaptive deadband, no peripheral adjustment required;
? Full load segment ZVS;
? Adaptive four load segment modes, effectively improving the efficiency of each load segment;
? Adaptive dead time adjustment algorithm;
? Built-in high-voltage starting and X-capacitor discharging circuits;
? CS negative pressure sampling for enhanced drive stability;
? Built-in full-range dither circuit to improve EMI performance;
? On the marketThe simplest asymmetric half-bridge solution.
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Versatile Output Configurations.
? ? ?The program supports5v3a,9v3a,12v3a,15v3a,20v5a, 28v5aThe output configuration is able to meet the needs of most electronic devices. Its high power density design results in a bare metal power density of 1.82W/cm3, further enhancing the product's compactness and efficiency.
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Major Chip:
AC-DC: DK8715BD
Synchronous rectifier: DK5V100R05VM
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DK8715BD Product Description
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DK5V100R05VM Product Description
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application scenario
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East Tech Semiconductor's 140W AHB solution is suitable for a variety of scenarios, including but not limited to:
? Laptop and tablet adapters;
? TV power supply, LED power supply, communication power supply;
? Chargers for two-wheeled electric vehicles, etc.
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Partial test data
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Average efficiency:
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Output voltage ripple:
? Output 28V/5A
X capacitor discharge waveform:
AHB operating waveform:
MOS tube stress and SR rectifier withstand voltage
? Test conditions: input 264Vac, output 28V5A, switching tube VDS voltage and SR rectifier voltage
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Primary Power Tube and SR Rectifier Voltages During Power-Up Transients
Test conditions: input 264Vac, output 20V2.25A, switching tube VDS voltage and SR rectifier voltage.
Test conditions: Input 264Vac, Output 20V0A , Switching Tube VDS Voltage and SR Rectifier Voltage
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EMC Conductivity Testing
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EMC Radiation Testing
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? ? If you are interested in the above AHB 140W PD program, please feel free to contact our sales team and we willProvide a full set of design and test dataThis makes it easy for you to quickly develop products and bring them to market.
? ? Thank you for your interest in TECO Semiconductor and we look forward to working with you in the future!
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Past Review
Solutions | Dongke 45W PD Fast Charging Minimalist Solution
Dongke Launches Various Newly Upgraded AHB Controllers - DK87XXBD Series
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