AONG36322 XSPairFET: Half-Bridge MOSFET for Space-Constrained DC-DC Buck Applications

24 May 2024 - 0 Comments

Alpha and Omega Semiconductor Limited has introduced its AONG36322 XSPairFET designed for space-constrained DC-DC applications. The new AONG36322 features two 30V MOSFETs in a half-bridge configuration where the high-side and the low-side MOSFETs are in an asymmetric DFN3.5x5 XSPairFET package. This innovative design allows the AONG36322 to replace an existing DFN5x6 asymmetric half-bridge MOSFET with an approximate 60 percent space-saving solution, thereby reducing the PCB footprint to further streamline the DC-DC architecture, resulting in a more efficient design. These benefits make the AONG36322 ideal for a new generation of smaller DC-DC buck converters in more compact applications such as point-of-load (POL) computing, USB hubs, and power banks.

The AONG36322 is an extension to the AOS XSPairFET lineup, designed with the latest bottom-source packaging technology. Its integrated high-side and low-side MOSFETs feature 4.5 mOhms and 1.3 mOhms maximum on-resistance, respectively, where the low-side MOSFET source is connected directly to the exposed pad on the PCB to enhance thermal dissipation. A definite advantage of the state-of-the-art AONG36322 package design is that it delivers lower parasitic inductance, significantly reducing switch node ringing.