Infineon’s expertise in digital USB Power Delivery

Valuable offering for high-power-density designs at optimized cost

Quick charging and compact size are the key customer-driven trends in the charger and adapter industry.

For the end user reduction of clutter, ease-of-use, and a well-balanced performance-cost-ratio are additional decisive factors for purchasing decisions. On the manufacturing side, these require smaller form factors, maximized power density, and unification enabled by the so-called USB-PD protocol as basis for increased power levels from existing USB standards. This will allow to charge not only smartphones but also power hard drives, printers, displays, and larger portable electronics like laptops. The maximum 100 W power supply is achieved with 20 V and up to 5 A.

Power management optimization across multiple peripherals

Power management

In addition to faster charging, this USB standard enables both, host and peripheral devices, to provide power - the power direction is no longer fixed. Essential is the communication of a suitable “power rule”, i.e. the source and the host exchange their requirements to figure out how much power to transfer. In this way, power management across multiple peripherals is optimized. Each device is supplied only the power it requires (e.g. low power cases such as headsets vs. a laptop being a high power case).

To ensure that design engineers are able to meet their design targets, Infineon offers a comprehensive semiconductor portfolio of low RDS(on) high-voltage and low-voltage power MOSFETs that accommodate excellent power density while appropriately addressing thermal management and potential EMI issues. Boards and magnetics are automatically assembled.

The focus on SMD packages results in fewer external components as well as in improved production performance related cost savings. With planar transformers and soft-switching control, customers can easily come up with slim designs. Digital-based control allows customers to differentiate substantially. Infineon paves the way in developing several high-performance USB PD solutions (e.g., a ready-to-use USB PD 45 W reference design).

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Why USB PD solutions from Infineon?


High power density

  • Digital forced frequency resonant control and high performance CoolMOSTM P7 and OptiMOSTM PD -> achieving over 22 W/inch3 uncased power density
  • High efficiency enabling smaller form factors
  • SMD packaged power components combined with optimized planar transformer -> for slim design

Short time to market

  • Extensive application system understanding -> readily available and easy-to-use solutions optimized for application-specific requirements
  • Provided hardware/software design tools can help diversify customer designs
  • Solution reliability proven by leading customers reduces risk qualification time
  • Broad network of field application engineers and partners ensures effective support globally
  • One-stop shop -> sourcing the most important semiconductors for USB PD from one single supplier

Competitive cost

  • Leading-edge technologies and packages reduce external costs (e.g. for thermal management)
  • Dedicated charger orientated portfolio with optimized cost
  • One-stop-shop -> likely to result in commercial cost savings
  • Various factors to bring system cost down -> e.g. reducing complexity and size, enabling specific transformer usage, optimizing production cost, etc.

High differentiation

  • Digital solution -> facilitating maximum differentiation

Secured supply chain

  • Flexible supply chain can shorten lead times and allow customers to adjust to changing demands in consumer markets
  • Large production capacity to secure upsurge in demand -> 3 front-end sites and over 5 back-end plants for power MOSFETs

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