Renesas ISL81806

The ISL81806 is an 80 V rated dual synchronous buck controller that generates two independent outputs or one output with two interleaved phases. Worldwide it is the first similar controller optimized to drive E-mode GaN FETs. It is suitable for telecommunication, computing, and other industrial applications.

Each output has a voltage and current controller. The internal Phase-Locked Loop (PLL) assures an accurate frequency setting from 100kHz to 2MHz, and the oscillator can be synchronized to an external clock signal for phase interleaving and is expandable to three, four, and six phases.

Key features

• Wide input and output voltage range
• Dual or two-phase buck controller with interleaved outputs
• Optimized to drive E-mode GaN FETs
• Wide switching frequency

Additional features

• Wide V_IN range: 4.5 V to 80 V
• Wide V_OUT range: 0.8 V to 76 V
• Dual or Two-phase Buck controller with interleaved outputs
• Integrated CC/CV controller + driver
• Supports multi-chip paralleling and phase interleaving
• Wide switching frequency: 100 kHz to 2 MHz
• Diode emulation and burst mode at light load or Forced PWM mode
• Shoot-through protection, OCP, OVP, OTP, UVP
• Independent EN and Soft Start for each output
• 5.3 V gate drive voltage for GaN FET

Applications

• Telecom 48 V to 12 V conversion
• Computing data center 48 V to 12 V conversion
• Power modules
• Robotics and home automation
• Battery and supercapacitor applications

Available tools

• Dual-Phase Evaluation Board for TQFN: ISL81806EVAL1Z; EPC9157 (300 W Brick Evaluation Module)