Press Kit SZ1101

Embargo: All Content on this Page is not for Publication before Monday, March 18, 2019 at 6am Pacific Time

World’s First Fully Integrated

Active Clamp Flyback Controller

SZ1101 combines design simplicity of flyback controllers with power density enabled by active clamp flyback controllers, delivering over 93.5% efficiency with an all silicon design and 15W/in  power density at 33W for AC/DC power adapters.


SZ1101 PCB Front Side

SZ1101 PCB Back Side

For High Power Density AC/DC Power Adapters

SZ1101 Flyback PWM Controller integrates four key ACF controller building blocks. These include an advanced ACF controller and three ultra-high-voltage components; an active clamp driver, an active clamp FET and a startup voltage regulator. This unprecedented level of integration facilitates designing efficient, high-power-density adapters with low bill-of-material cost to satisfy power-hungry mobile phones, tablets, notebooks and video game consoles.

Key Specs:

  • Input: 90 – 265 VAC

  • Output: 5V/3A, 9V/3A,15V/2.2A, 20V/1.65A or (PPS) 3.3-11V/3A

  • Output Power: 33W Max

  • Output Port: USB-PD 3.0 or PPS

  • Efficiency: > 93.5% full power efficiency with an all silicon design

Key Features:

  • Integrated ultra-high-voltage active clamp FET/ driver/startup voltage regulator

  • Advanced adaptive digital controller 

  • Tight switching frequency regulation for improved input EMI filter utilization

  • Up to 140kHz switching frequency

  • Cycle-by-cycle adaptive digital control (OptiMode   )

  • Up to 33W output power

  • Capable of over 15W/in  power density 

  • 16-pin SOIC package






To support the ever-increasing energy and fast charging needs of mobile devices, designers today are challenged to deliver increasing amounts of power in a travel adapter while also keeping it cool to the touch and maintaining the small size consumers have come to expect. High efficiency, or reducing power loss, is key to achieving the power density without overheating the adapter’s case. For example, delivering 33W today without increasing the volume beyond the 2.4 cu-inch adapter that delivered only 15W a few years ago requires a minimum of 93.2% efficiency to ensure that the case stays under the desired limit of 50 degrees Celsius when operating at room temperature.

Press Contacts

Moody and Associates PR

Bill Moody:

Michelle Moody:

Phone: 214.363.3460

To access the high resolution visuals, we recommend using Chrome, Firefox, Safari, or Microsoft Edge, because Internet Explorer may not load them.

High Resolution Visuals

SZ1101 PCB Front/Back

SZ1101 PCB Front

SZ1101 Key Features

Efficiency 115VAC

Four Key Building Blocks

Efficiency 230VAC

SZ1101 PCB Back

SZ1101 PCB Back 2

SZ1101 Product Video

Silanna Logo Horizontal

Silanna Logo Vertical





Silanna Semiconductor | 4795 Eastgate Mall, Suite 100 | San Diego, CA 92121 | United States | +1 858 373 0475 | © 2020 Silanna Semiconductor | All Rights Reserved