SemiMedia SemiMedia
  • Breaking News
  • MarketWatch
  • Distribution
  • Manufacturer
  • Video
  • About us
Home › Manufacturer › ST releases ultra-economical synchronous-rectification controllers in SOT23-6L Packages
  • 0

ST releases ultra-economical synchronous-rectification controllers in SOT23-6L Packages

SemiMediaEdit
May 11, 2020

STMicroelectronics recently launched SRK1000A and SRK1000B secondary-side synchronous-rectification (SR) controllers for flyback converters, featuring high efficiency and low power consumption, introduce a new, more affordable and smaller-footprint option for battery chargers, quick chargers, adapters, and USB power-delivery outlets.

Designed for fast turn-on with minimum delay, and with innovative adaptive turn-off logic, the devices maximize synchronous-rectification MOSFET conduction time and minimize the effects of parasitic inductance in the circuit without the need to add external components, leading to greatly improved system efficiency and a reduced bill of materials.

The SRK1000A and SRK1000B are both able to manage a wide range of flyback controllers including quasi-resonant (QR) and mixed CCM/DCM fixed frequency operation up to 300kHz, simplifying system design. Both devices allow programmable blanking time after turn-on (TON), via resistor selection, to prevent noise from inducing spurious behavior. The SRK1000A has a 2μs fixed blanking time after turn-off (TOFF), while the corresponding value for the SRK1000B is 3μs.

The devices both offer an efficient low power mode at light load, entering a low-consumption sleep mode when synchronous rectification is no longer beneficial. This is managed either by detecting primary-side controller burst-mode operation, or when the SR MOSFET conduction becomes lower than the programmed minimum TON. The device quiescent current in this low consumption mode is only 160μA.

Suitable for applications with output voltage up to 19V, and capable of maintaining regulation down to 2V output in CCM, the SRK1000A and SRK1000B have a wide supply-voltage range of 4.5V to 32V, with a drain-source voltage rating of 100V. The output can sink up to 1A and source up to 0.6A to control the gate of the external N-channel synchronous-rectification MOSFET.

The SRK1000A are SRK1000B are both available in a 2.9mm x 2.8mm 6-pin SOT23-6L package, priced from $0.26 for orders of 1000 pieces.

For more information please visit www.st.com/srk1000a-pr.

Related

electronic components news SRK1000A SRK1000B STMicroelectronics synchronous-rectification controller ultra-economical synchronous-rectification controller
Renesas extends Bluetooth 5.0 connection to its 32-bit MCU
Previous
Vishay expands resistance range of MCA 1206 AT Precision series thin film chip resistors
Next

All Comments (0)

Back
No Comment.

Top Post

Fire broke out at AKM factory in Japan
Qualcomm ranked first in the world's top ten IC design companies
Mouser Electronics expands to the Philippines with local customer service center
Analyze the key factors and prospects of electronic components shortage from the perspective of wafer industry
What is the root cause of the decline of the Japanese semiconductor industry?
ST releases price increase notice

Subscribe SemiMedia

Please check your E-mail to confirm the subscribtion.

Related posts

Infineon launches PSOC 4100T Plus MCU with integrated multi-sensing for HMI and control

Infineon launches PSOC 4100T Plus MCU with integrated multi-sensing for HMI and control

May 15, 2025
0
Murata to expand Vietnam plant to meet rising demand for automotive inductors

Murata to expand Vietnam plant to meet rising demand for automotive inductors

May 15, 2025
0
Samsung to outsource low-end photomasks to focus on advanced lithography

Samsung to outsource low-end photomasks to focus on advanced lithography

May 15, 2025
0
Top 10 OSAT vendors post modest growth in 2024 amid rising demand for advanced packaging

Top 10 OSAT vendors post modest growth in 2024 amid rising demand for advanced packaging

May 14, 2025
0
Copyright © 2017-2025 SemiMedia. Designed by nicetheme.
  • Please set up your first menu at [Admin -> Appearance -> Menus]
  • electronic components news
  • Electronic components supplier
  • Electronic parts supplier
  • Infineon
  • Electronic component news
  • Renesas
  • Vishay
  • STMicroelectronics
  • NXP
  • TDK

SemiMediaEdit

Administrator