Kinetic Technologies has expanded its portfolio with the introduction of KTB2140. This single-chip, highly integrated active-clamp current-mode PWM controller solution is designed for isolated power supply and Power over Ethernet (PoE) Powered Devices (PD) and significantly improves efficiency, while reducing the PCB area.

This KTB2140 current-mode PWM controller can operate as an active-clamp flyback or forward converter, with a wide 8V to 80V input range. It is optimized for highest efficiency with best-in-class dead-time programmable range and ultra-fast MOSFET gate driver rise and fall times.  Programmable spread-spectrum switching frequencies give designers flexibility to mitigate EMI problems. Switching frequencies ranging from 100 kHz up to 1.2 MHz allow small form factor designs with smaller transformers. Protection features include OCP, short-circuit, thermal, under-voltage lockout (UVLO) and over-voltage protection (OVP).

KTB2140 fully supports the IEEE 802.3bt 90W specifications and is also compliant with IEEE^® 803.2af/at applications. Key applications for the new KTB2140 include Conference Systems, Wireless LAN Access Points, Security Cameras, and 30 W  ? 200 W Switch-Mode Power Supplies.

Senior Director of Product Marketing at Kinetic, Erik Ogren, says, “Artificial Intelligence (AI) is driving many emerging product trends including needs for higher efficiency in Datacom, Telecom and additional power-hungry features in PoE PDs. Our newest current-mode controller solution not only brings higher efficiency for 48 V designs up to 200 W, but does it with smaller PCB area.”

Key Features of KTB2140:

• Fully IEEE^® Std. 802.3bt compliant
• PWM peak current mode controller
• Dual low side gate driver
• High efficiency topologies: 
  • Flyback, Forward
  • Flyback with synchronous rectification
  • Flyback with active clamp
  • Forward with active clamp
• >1.5 A Output Gate Drive Capability
• Wide input voltage range: 8 V to 80 V. Supports both isolated and non-isolated applications
• Programmable fixed frequency up to 1.2 MHz
• Integrated Short-Circuit Protection
• Programmable Soft Start Time
• Programmable dead time
• Programmable slope compensation
• Internal pull-up resistor in feedback for optocoupler and isolated connection
• Over-current, OV/UVLO, and thermal protection
• Programmable Frequency Dithering for Low EMI Spread-Spectrum Operation
• Synchronous External Clock
• Soft turn off
• Maximum duty-cycle limit
• Internal high voltage start-up regulator
• -40°C to +125°C Junction Temperature Range
• Small 3mm x 3mm WQFN Package

KTB2140 is currently available and being shipped to potential customers.

Click here to learn more about KTB2140.