15W 5.0V high-efficiency USB adapter reference design board, using Infineon's quasi-resonant PWM IC ICE2QS03G with CoolMOS™ IPS65R1K0CE (IPAK) and secondary side synchronous rectification IC with OptiMOS™ BSC067N06LS3 G (ThinPAK), small size, high efficiency, Various protection modes can be provided for high-reliability systems.
The MAX15118 high-efficiency, current-mode step-down regulator with integrated power switches operates from 2.7V to 5.5V and delivers up to 18A output current in a small 2mm x 3mm package.
The MAX17595 is a peak-current-mode controller for designing wide input-voltage flyback regulators. The MAX17595 offers optimized input thresholds for universal input AC-DC converters and telecom DC-DC (36V to 72V input range) power supplies.
Due to its simplicity and low cost, the flyback converter is the preferred choice for low-to-medium isolated DC-DC power-conversion applications. However, the use of an optocoupler or an auxiliary winding on the flyback transformer for voltage feedback across the isolation barrier increases the number of components and design complexity. The MAX17690 eliminates the need for an optocoupler or auxiliary transformer winding and achieves ±5% output voltage regulation over line, load, and temperature variations.
The PMP7800.1 reference design is a dropout design using the LMR14203 for computer and peripheral applications. It generates a non-isolated 3.3 volt output (0.07 amps) from a 21.6 to 26.4 volt DC input.
This reference design shows how to increase the output current of the MAX15006/MAX15007 linear regulators to meet the power-supply requirements for an automotive air bag.
This board is a SFF (Small Form Factor) complete miniature wireless receiver solution. The output is 5Vdc (1A), which can be used to power or charge battery-powered devices using any industry-standard WPC or PMA compliant transmitter.
The MAX17690 implements an innovative algorithm to accurately determine the output voltage by sensing the reflected voltage across the primary winding during the flyback time interval. By sampling and regulating this reflected voltage when the secondary current is close to zero, the effects of secondary-side DC losses in the transformer winding, the PCB tracks, and the rectifying diode on output voltage regulation can be minimized.
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