Power Block

  • Products
  • Highlights
  • Documents
  • Boards
  • Simulation
  • Videos
  • Forums
  • Support
  • Software & Tools
  • myInfineon

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.

Product portfolio Power Block

Click on a product type to learn more, download datasheets and order

Part number Schottky-like diode 1) BV DSS (V) R DS(on)@V gs=4.5 max Q gtot@ V gs=4.5 typ Package size Sample status
High Side Low Side High Side Low Side WxLxT [mm³]  
BSG0810NDI Y 25 4 1.2 5.6 16 5.0x6.0x1.0 available
BSG0811ND N 25 4 1.1 5.6 20 5.0x6.0x1.0 available
BSG0813NDI Y 25 4 1.7 5.6 12 5.0x6.0x1.0 available


Part number Package Max. junction temperature Boot to GND Features Sample status
PX3517 3.0x3.0x0.9mm 3 TDSON-10 -25°C to 125°C 30 thermal warning available
PX3519 3.0x3.0x0.9mm 3 VDSON-8 -25°C to 125°C 30 driver enable pin available

1) monolithic integrated Schottky-like diode

Key features Key benefits Applications
  • 50A 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
  • Compact and simplified layout for a DC-DC converter
  • Optimized layout with lowest loop inductivity and best thermal performance
  • Desktop and server
  • Single-phase & multi-phase POL
  • CPU/GPU regulation in notebooks & DDR memory
  • High power density voltage regulator


IFX_Website-Button_Webinars Banner Simulation Tool

Product Brief

Title Size Date Version
290 KB 11 Mar 2015 01_00
102 KB 11 Mar 2015 01_00

Product Selection Guide

Title Size Date Version
1.2 MB 17 Aug 2015 01_00
22.2 MB 21 Feb 2017 00_00

Application Notes

Title Size Date Version
701 KB 30 Nov 2015 01_00
902 KB 13 Aug 2013 01_00
7 MB 25 Jun 2015 01_00
2 MB 01 Dec 2016 01_00
663 KB 01 Dec 2012 01_00

Application Brochure

Title Size Date Version
199 KB 18 Sep 2017 02_00


Title Size Date Version
820 KB 12 Nov 2015 01_00

Additional Product Information

Title Size Date Version
229 KB 20 Aug 2015 01_00
157 KB 12 Mar 2015 01_00
161 KB 12 Mar 2015 01_00
eLearning Datasheet explanation

Datasheet parameters and diagrams explanation - how to use them in applications

Reading datasheets is sometimes a challanging task. In this training some important datasheet parameters and diagrams are explained more in detail.

OptiMOS™ 5 25 V Power Block Package

OptiMOS™ 5 25 V Power Block package

This video gives an introduction to the OptiMOS™ 5 25 V Power Block product family. Power Block is a leadless SMD package comprising the low-side and high-side MOSFET of a synchronous DC-DC converter into a 5.0x6.0mm2 package outline.

Length 4:40
Introduction to Power Block Product Family

Introduction to Power Block product family

This video covers the product family and benefits for customers of Infineon's new Power Block package. Power Block is a leadless SMD package comprising the low-side and high-side MOSFET of a synchronous DC-DC converter into a 5.0x6.0mm2 package outline.

Length 3:54
Infineon's Power MOSFETs Power Block Versus Power Stage 5x6

Infineon's power MOSFETs Power Block versus Power Stage 5x6

This video covers a comparison between Infineon’s Power Block and power stage 5x6 packages. Two leadless SMD package comprising the low-side and high-side MOSFET of a synchronous DC-DC converter into a 5.0x6.0mm2 package outline.

Length 3:02

Find an answer to your question

Infineon welcomes your comments and questions.

If you have any questions concerning our products, please fill out the following form. Your inquiry will be sent to the appropriate specialist who will be in touch with you as soon as possible.

You will receive a confirmation E-mail to validate your address in our system. Any attached file to the reply which will help to support your inquiry is highly appreciated.

For more information about our privacy policy please click on Privacy Policy
All fields marked with an asterisk (*) are mandatory.

Where to buy

Please use our location finder to get in contact with your nearest Infineon distributor or sales office

Find a location

Ask Infineon