Buck controller allows 48V to 1V direct step-down

Key Features

    • Wide input voltage range: 4.5V to 60V
    • Wide output voltage range: 0.6V to 54V
    • Light-load efficiency enhancement
    • Low ripple diode emulation mode with pulse skipping
    • Programmable soft-start
    • Supports prebiased output with SR soft-start
    • Programmable frequency: 100kHz to 2MHz
    • External sync
    • PGOOD indicator
    • Forced PWM
    • Adaptive shoot-through protection
    • No external current sense resistor
    • Use lower MOSFET rDS(ON)
    • Complete protection
    • Overcurrent, overvoltage, over-temperature, undervoltage
    • Pb-free (RoHS compliant)

Buck controller allows 48V to 1V direct step-downDescription

The ISL8117 is a synchronous buck controller to generate POL voltage rails and bias voltage rails for a wide variety of applications in industrial and general purpose segments. Its wide input and output voltage ranges make it suitable for telecommunication and after-market automotive applications.

The ISL8117 uses the valley current modulation technique to bring hassle-free power supply design with minimal number of components and complete protection from unwanted events.

The ISL8117 offers programmable soft-start and enable functions along with a power-good indicator for ease of supply rail sequencing and other housekeeping requirements. In ideal situations, a complete power supply circuit can be designed with 10 external components and provide OV/OC/OT protections in a space conscious 16 Ld 4mmx4mm QFN or easy to assemble 6.4mmx5mm 16 Ld HTSSOP package.


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