Power Block

Overview

Asymmetric half-bridge handles 50A in a 30mm² footprint

OptiMOS™ 5 Power Block is a leadless SMD package in a 5.0x6.0mm² package outline, including a low-side and a high-side MOSFET in a synchronous buck converter configuration. By replacing two separate discrete packages, such as SO8 or SuperSO8, with the OptiMOS™ 5 Power Block, customers can shrink their designs by at least 50%. Standardizing power packages benefits the customer, as the number of different package outlines available in the market place is minimized.

Benchmark efficiency and high current handling

OptiMOS™ 5 Power Block features Infineon’s latest generation MOSFETs, which offer lowest on-state resistance (R_DS(on)) and figure of merits (Q_g, Q_gd). The source-down connection of the low-side MOSFET results in a big PGND pad which significantly improves the thermal junction to the board, simplifies layout options and reduces EMI. Together with OptiMOS™ driver (PX3519, PX3517) and controller family, Infineon offers an excellent discrete solution for low voltage DC-DC power conversion with a current handling up to 50A and a superior peak efficiency of 95%. This solution allows engineers to optimize their designs by increasing switching frequency and power density as well as to improve the overall BOM costs.

Key Features, Key Benefits & Potential Applications

Key features	Key benefits	Potential applications
50 A max average load current Source-down low side MOSFET for better PCB cooling Internally connected low-side and high side (lowest loop inductance) High side Kelvin connection for more efficient driving	High power capability Optimum thermal performance Compact and simplified layout for a DC-DC converter Optimized layout with lowest loop inductivity	Desktop and server Single-phase & multi-phase POL CPU/GPU regulation in notebooks & DDR memory High power density voltage regulator