Power Electronics / Power Management


InnoSwitch5 Offline Flyback Switcher IC

29 February 2024 Power Electronics / Power Management

Power Integrations has announced the release of the InnoSwitch5-Pro family of high-efficiency, programmable flyback switcher ICs. The single-chip switcher achieves over 95% efficiency with a novel secondary-side control scheme, which achieves zero-voltage switching (ZVS) without a dedicated and costly additional high-voltage switch. The new IC, which features a 750 or a 900 V PowiGaN primary switch, primary-side controller, FluxLink isolated feedback and secondary controller with an I2C interface, optimises the design and manufacture of compact, highly efficient single- or multi-port USB PD adapters.

Adnaan Lokhandwala, senior product marketing manager at Power Integrations said: “The combination of ZVS and GaN is power supply magic. Switching losses vanish, and we can leverage the low conduction losses of GaN to implement super dense adaptor layouts with far fewer components than asymmetric half-bridge (AHB) circuits or active clamp alternatives. For example, we have demonstrated 140 W/28 V USB PD adaptors in 4,2 cubic inches using only 106 components. The flyback topology used by InnoSwitch5-Pro ICs is much easier to implement than AHB, and can also operate from universal mains with or without a PFC stage.”

InnoSwitch5-Pro flyback switcher ICs feature lossless input line voltage sensing on the secondary side for adaptive DCM/CCM and ZVS control to maximise efficiency and simplify design across line and load. The ICs also feature a post-production tolerance offset to facilitate accurate output constant-current control of better than 2% to support the UFCS protocol.

Applications of the InnoSwitch5-Pro family are notebooks, high-end cell phones, and other portable consumer products, including designs that require the new USB PD EPR (Extended Power Range) protocol.


Credit(s)



Share this article:
Share via emailShare via LinkedInPrint this page

Further reading:

3-terminal filters for automotive applications
RS South Africa Power Electronics / Power Management
TDK has expanded its YFF series of 3-terminal filters for automotive applications to include higher voltages up to 35 V and higher capacitances up to 4,7 µF.

Read more...
High-reliability isolation amplifiers
EBV Electrolink Analogue, Mixed Signal, LSI
The VIA series of isolation amplifiers from Vishay are designed to deliver exceptional thermal stability and precise measurement capabilities.

Read more...
Simple battery charger ICs for any chemistry
Altron Arrow Editor's Choice Power Electronics / Power Management
The LTC4162 is a highly integrated, high voltage multi-chemistry synchronous monolithic step-down battery charger and PowerPath manager with onboard telemetry functions and optional maximum power point tracking.

Read more...
Why your PoE budget could make or break your next installation
Power Electronics / Power Management
In South Africa’s often unpredictable networking environments, understanding and planning your PoE budget is essential for system reliability, customer satisfaction, and long-term scalability.

Read more...
Five-minute EV charging a reality
Power Electronics / Power Management
Successfully demonstrated in Beijing recently at the Shanghai auto show, BYD claimed to add 400 km of range in just five minutes of charging.

Read more...
The evolution of power management in electronics
TRX Electronics Power Electronics / Power Management
The Mibbo MPS Series metal-encased power supplies deliver solid, efficient power in a durable package that’s built to last.

Read more...
Power and precision in a compact package
Conical Technologies Power Electronics / Power Management
The Mibbo MPS Series metal-encased power supplies deliver solid, efficient power in a durable package that’s built to last.

Read more...
Robust PoE module
CST Electronics Power Electronics / Power Management
The Ag59800-LPB high power, IEEE 802.3bt compliant, PD module from Silvertel offers typical efficiency of 95% making it an ideal choice for higher power, space-constrained applications.

Read more...
Cutting-edge solutions for Africa’s clean energy future
Power Electronics / Power Management
As Africa pushes towards reliable, affordable, and sustainable energy, Sungrow is driving transformation with cutting-edge innovations that enhance grid stability, reduce energy costs, and expand access to clean power.

Read more...
Transformer protection is a critical safeguard for municipal power stability
Power Electronics / Power Management
Transformer protection is not just a technical requirement; it is a vital component in ensuring the resilience and operational integrity of South Africa’s municipal power infrastructure.

Read more...