High-efficiency, single-chip USB port power supply reduces component count and simplifies power sharing design in multi-port fast chargers

San Diego, CA – August 8th, 2022 – Silanna Semiconductor, The Power Density Leader, has launched the world’s first buck converter Power IC  to feature intelligent power sharing. The new SZPL3002A buck converter IC with a built-in USB PD/FC port controller will significantly reduce the number of components needed to implement 65W fast charger and adapter applications with up to four ports.

Silanna Semiconductor focuses on the ultimate Power Management challenges with solutions that combine best-in-class power density and efficiency with unprecedented BOM savings. The SZPL3002A ‘Power IC’ addresses these requirements by combining a high-efficiency synchronous buck converter and an advanced port controller into a single QFN package measuring just 5 mm x 5 mm.

Silanna’s new IC is built on the company’s proven wide-voltage, high-frequency point-of-load DC-DC converter technology, which operates with efficiencies in excess of 98%. The integrated port controller offers full support for USB PD V3.0 Type C interfaces and QC2.0/3.0/4.0/5.0 support for Type A/C connections. Facilitating power sharing and port power re-balancing functionality across two, three or four ports, the controller ensures that port power adapts to the needs of a particular device, irrespective of when connections are made.

“Silanna Semiconductor is known by our mantra ‘Power Management Re-Imagined’ and this unique Power IC is the world’s first to feature intelligent power sharing using a fully integrated USB-PD controller, MCU and VCONN cable communications protocol within this highly efficient DC/DC buck converter,” said Mark Drucker, CEO of Silanna Semiconductor. “Built using the flexibility of our AnyPort™ architecture, we are delighted with customer reactions which have resulted in a large number of early design wins. We are building a stable number of CO2 Smart Power devices and it is exciting to see our design teams focus on the end-to-end power solutions with complementary DC-DC and AC-DC product families that achieve best-in-class efficiency.”  

The new SZPL3002A offers five, selectable pre-loaded power contract configurations so OEMs can use a single device across multiple product designs. Power re-balancing allocates under-used power on previously connected ports, while protective power throttling automatically reduces current when temperature thresholds are reached.

Hubie Noto, Silanna Semiconductor’s director of product marketing comments: “Traditional charger PD ports offer a selection of fixed contracts to a device based on available power. These are programmed into the port controller and are based on various voltage and current levels a device might use when connecting. Each port has different power contracts for different power. The SZPL3002A offers one fully programmable contract set plus four pre-programmed sets that are chosen with an external resistor value.”

Silanna’s DC-DC portfolio comprises high-voltage, high-efficiency, wide-input integrated buck converters that offer selectable switching frequencies and have unique features to optimize performance in USB port power supply applications. Extremely low operating power dissipation enables very low no-load power – an important specification for regulatory certification – while a momentary internal feedback path allows for clean and well-controlled start-up operation until external USB-PD controllers can bias themselves and take over control of the output voltage. 

Power IC SZPL3002A 65W Buck Converter with Integrated USB PD/FC Port Controller Key Features and Benefits

  • High-Efficiency (>98%) Synchronous Buck Converter
    • Selectable Switching Frequency: 667kHz to 2MHz
    • 3.3V to 21V Output at 3.25A (covers PD + PPS)
    • 7V to 27V Input
    • 41mohms upper FET, 38mohms lower FET
    • Selectable power save mode
    • Selectable soft start time
    • Full protection features such as OCP, OVP, OTP
    • I2C bus for communication
    • QFN 5 mm X 5 mm thermally enhanced package
  • Integrated with Most Advanced Port Controller
  • Provides a complete USB port power supply
  • Full support for USB PD V3.0 – Type C
  • QC2.0/3.0/4.0/5.0 Support for Type A/C Ports
  • USB-IF certified
  • Calculated, adaptive intelligent power sharing across 2, 3 or 4 ports
  • Port power re-balancing
  • Power throttling at elevated temperature
  • Integrated VCONN power supply
  • 5 power profiles (resistor-selectable)
  • CO2 Smart Power


SZPL3002A devices are being sampled to key accounts and will be fully released in the second half of 2022. More information is available at https://www.powerdensity.com or by contacting sales@silannasemi.com  

About Silanna Semiconductor:

The Power Density Leader. Delivering on the ultimate Power Management challenge of best-in-class power density and efficiency performance that delights customers with unprecedented BOM savings. Silanna Semiconductor’s AC/DC and DC/DC power converter ICs are driving key innovations in Travel Adapters, Laptop Adapters, Appliance Power, Smart Metering, Computing, Lighting, Industrial Power, and Display Power utilizing the latest digital and analog control and device technologies. In addition to our global engineering sales force, customers are supported by regional design centers and online tools. ‘Power Density Hero’ is an online design tool where customers input their power needs and instantly receive a complete design, schematic, and ‘Bill of Materials’ (BOM). The Asian Center of Excellence (ACE) has a dedicated team of power system engineers to support our customers in their application specific design needs.

Silanna Semiconductor, with its family of CO2 Smart Power™ ICs, offers technologies that will benefit the planet and the people on it by delivering best-in-class power density and efficiency.

Silanna Semiconductor, headquartered in San Diego, CA, is a privately-held semiconductor company, and has global facilities supporting customers with design centers and offices in North America, Europe, Asia, and Australia.             

PR Contact: Grand Bridges Ltd, team@grandbridges.com, +1.310 529 0321