This document provides the test report for a digitally controlled asymmetrical half-bridge (AHB) converter, a flyback-derived resonant topology designed for high- efficiency and wide-output power conversion. The control algorithm implements zero-voltage switching (ZVS) control using a fast pulse-width modulation (PWM) on-time calculation and adaptive zero-voltage detection (ZVD) technique to maintain boundary ZVS across varying input and load conditions. The control algorithm also includes programmable zero - crossing detection (ZCD) count control, adaptive soft-start, and inductance compensation algorithms to maintain stable performance under production variations.
This evaluation board achieves a peak efficiency of 97.8% at 28V and 9A condition; targeting high-power applications (greater than 100W) such as USB PD adapters, industrial chargers, and power tools.
| Output voltage options | PMP41140.1 |
|---|---|
| Vin (Min) (V) | 300 |
| Vin (Max) (V) | 420 |
| Vout (Nom) (V) | |
| Iout (Max) (A) | 12 |
| Output Power (W) | |
| Isolated/Non-Isolated | Isolated |
| Input Type | DC |
| Topology | Half Bridge- Resonant |
A fully assembled board has been developed for testing and performance validation only, and is not available for sale.
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Test results for the reference design, including efficiency graphs, test prerequisites and more
Detailed overview of design layout for component placement
Complete listing of design components, reference designators, and manufacturers/part numbers
Files used for 3D models or 2D drawings of IC components
Design file that contains information on physical board layer of design PCB
PCB layer plot file used for generating PCB design layout
Detailed schematic diagram for design layout and components
Includes TI products in the design and potential alternatives.
| Type | Title | Date | ||
|---|---|---|---|---|
| * | Test report | 280W Digital Asymmetrical Half Bridge (AHB) DC-DC Converter Reference Design | PDF | HTML | Jan 12, 2026 |
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