The document describes a power supply controller specifically designed to provide high-performance DC/DC conversion for high-current microprocessors. The device implements a dual-phase step-down controller with a 180° phase-shift between each phase. A precise 5-bit digital-to-analog converter (DAC) allows adjusting the output voltage from 1.100V to 1.850V with 25mV binary steps. The high-precision internal reference ensures the selected output voltage to be within ±0.8%. The high peak current gate drive affords fast switching to the external power MOS, providing low switching losses. The device ensures fast protection against load overcurrent and load over/undervoltage. An internal crowbar is provided, turning on the low side MOSFET's RdsON or a sense resistor for overcurrent protection.
The L6917 is a power supply controller designed for high-performance DC/DC conversion in dual-phase step-down applications. It features a 180° phase-shift between phases and includes integrated high-current gate drivers capable of up to 2A gate current. The device utilizes a precise 5-bit digital-to-analog converter (DAC) to adjust the output voltage from 1.100V to 1.850V with 25mV steps, ensuring an accuracy of ±0.8%.
| Output Voltage Range | 1.100V to 1.850V |
|---|---|
| Output Voltage Accuracy | ±0.8% |
| Gate Current | Up to 2A |
| Internal Oscillator Frequency | 300 kHz |
| Max Oscillator Frequency | 1MHz |
| Package Type | SO-28 |
| Max Junction Temperature | 150 °C |
| VID Pull-up Current | 4 to 6 µA |
The output voltage can be adjusted from 1.100V to 1.850V using the 5-bit programmable DAC.
The output voltage is programmed using a 5-bit digital-to-analog converter (DAC) with 25mV binary steps.
The device features integrated high current gate drivers with up to 2A gate current.