This document introduces the main characteristics of the L6917 power supply controller, including 2-phase operation, synchronous rectifier control, ultra-fast load transient response, integrated high current gate driver, TTL-compatible 5-bit programmable output compliant with VRM 9.0, 0.8% internal reference accuracy, 10% active current sharing accuracy, digital 2048 step soft-start, overvoltage protection, overcurrent protection, 300 kHz internal oscillator, oscillator externally adjustable up to 1MHz, power good output and inhibit function, remote sense buffer, etc.
The L6917 is a power supply controller designed for high-performance DC/DC conversion in high-current microprocessor applications. It implements a dual-phase step-down controller with a 180° phase-shift and features a precise 5-bit digital-to-analog converter (DAC) for adjusting the output voltage from 1.100V to 1.850V with 25mV steps.
The device includes integrated high-current gate drivers capable of up to 2A gate current, ensuring fast switching and low losses. It offers protection features such as overvoltage protection (OVP), overcurrent protection (OCP), and an internal crowbar circuit. The internal oscillator runs at 300 kHz but is externally adjustable up to 1 MHz.
| Output Voltage Range | 1.100V to 1.850V |
|---|---|
| Output Voltage Step | 25mV |
| Reference Accuracy | 0.8% |
| Gate Drive Current | Up to 2A |
| Internal Oscillator Frequency | 300 kHz |
| Maximum Oscillator Frequency | 1 MHz |
| Package Type | SO-28 |
| Maximum Junction Temperature | 150 °C |
The output voltage can be adjusted from 1.100V to 1.850V.
The device supports a dual-phase operation with a 180° phase-shift between each phase.
The integrated gate drivers provide up to 2A of gate current.
Yes, the internal 300 kHz oscillator is externally adjustable up to 1 MHz.