Description
L6717A is a hybrid CPU power supply controller embedding 2 high-current drivers for the CORE section and 1 driver for the NB section - requiring up to 2 external drivers when the CORE section works at 4 phase to optimize the application overall cost. I2C interface is provided to manage offset for CORE section, switching frequency and dynamic phase management saving in component count and space consumption. Dynamic phase management automatically adjusts phase-count according to CPU load optimizing the system efficiency under all load conditions. The dual-edge asynchronous architecture is optimized by LTB technology® allowing fast loadtransient response minimizing the output capacitor and reducing the total BOM cost. Fast protection against load overcurrent is provided for both the sections. Feedback disconnection protection prevents from damaging the load in case of misconnections in the system board. L6717A is available in VFQFPN48

Features
■ Hybrid controller for both PVI and SVI CPUs G34 compliant
■ Dual controller with embedded high current drivers: 2 phases for CPU CORE + 2 PWM for ext drivers, 1 phase for NB
■ Dynamic phase management (DPM)
■ I2C interface to control offset, switching frequency and PSI_L
■ Dual-edge asynchronous architecture with LTB Technology®
■ PSI management to increase efficiency in light- load conditions
■ Dual overcurrent protection: total and per- phase compatible with Itdc and IddSpike
■ Voltage positioning
■ Dual remote sense
■ Feedback disconnection protection
■ Programmable OV protection
■ Oscillator internally fixed at 200 kHz externally adjustable
■ LSLess startup to manage pre-biased output
■ VFQFPN48 package

Applications
■ Hybrid high-current VRM / VRD for desktop / server / workstation / IPC CPUs supporting PVI and SVI interface
■ High-density DC-DC converters