Alpha and Omega Semiconductor (AOS), a prominent supplier of power discretes, ICs, modules, and digital power solutions, has unveiled a new family of application-specific EZBuck regulators. The AOZ2295QI-05, introduced by AOS, boasts the most compact footprint in the industry, catering to 5V rails in desktop and laptop computing systems.
Modern personal computing systems, with their high performance and numerous add-on features, require more than 10A of output current for their 5V rails. Traditionally, implementing such power requirements involves either a controller with external discrete power FETs or two low-current converters, resulting in increased component count and larger PCB area, thereby escalating system costs. In contrast, AOS’s highly integrated solution, housed in a single, thermally enhanced QFN 4mm x 4mm package, can deliver up to 12A of current. This compact design not only reduces system size but also offers industry-leading efficiency and thermal performance.
The AOZ2295QI-05 converter is specifically designed to meet the key requirements of the 5V rail. It incorporates a TON extension mode, enabling the converter to output a stable 5V even when the battery cell voltage drops to 5.5V. Additionally, AOS’s proprietary Constant On-Time architecture ensures an ultrasonic mode with a switching frequency above 30kHz, preventing audible noise in a wide range of design and application scenarios.
The new device also offers a high level of integration and protection features, characteristic of AOS’s EZBuck product family. It includes a PGOOD output, an integrated bootstrap diode, and an integrated soft start. Protection features encompass cycle-by-cycle current limit, short-circuit protection (SCP), Overvoltage Protection (OVP), and Thermal shutdown.
Key features of the AOZ2295QI-05 regulator include a wide input voltage range of 5.5V to 25V, high current capability of 12A, high peak current of 16A, low RDS(ON) internal NFETs, a 5V LDO output, TON extension mode, ultrasonic mode, and a thermally enhanced 4mm x 4mm QFN package capable of supporting up to 60W of output power.
Wayne Lee, Power IC Marketing at AOS, expressed that the AOZ2295QI-05’s load current capability provides designers with an easy-to-use solution for supporting high-power 5V systems within a compact form factor. In the context of shrinking desktop motherboard and laptop designs, where PCB space is limited, AOS’s EZBuck regulator technology simplifies the job for system designers.
