Renesas Electronics ISL691x Digital Multiphase Controllers
Renesas Electronics ISL691x Digital Multiphase PWM (Pulse-Width Modulation) Controllers provide up to seven phases assignable in any combination across two outputs and combine with smart power stages to provide a scalable solution from 10A to 450A. The result is enhanced power optimization, including more energy-efficient networking and communications infrastructure equipment. With a flexible X+Y assignment along with PMBus and SVI2 interfaces, the ISL691x Multiphase Controllers are ideal for controlling the microprocessor core, memory, and system rails of AMD SVI2-based platforms.
The ISL691x devices use a proprietary digital linear predictive current modulation scheme to achieve the high transient response and ease of tuning while addressing the challenges of powering AMD microprocessors. The configuration is accomplished through the intuitive PowerNavigator™ GUI. Diode emulation and automatic phase add/drop features allow the user to extract maximum efficiency from the converter regardless of load conditions.
The ISL691x multiphase PWM controllers support a comprehensive fault management system to enable the design of highly reliable systems. From an overcurrent protection scheme including peak and average detection to the configurable power-good and catastrophic fault protection flags, any need is accommodated.
Features
- Advanced linear digital modulation scheme
- Zero-latency synthetic current control for excellent high-frequency current balance
- Auto phase add/drop for excellent load versus efficiency profile
- Dual-edge modulation for faster transient response
- Excellent DVID performance
- Flexible phase assignment from 0 to 7 phases per output
- Up to 1MHz switching frequency operation for high-density designs
- Diode braking for overshoot reduction
- Diode emulation for enhanced light-load efficiency
- Differential remote voltage sensing supports ±0.5% closed-loop system accuracy over load, line, and temperature
- Highly accurate current sensing for excellent load line regulation and accurate OCP
- Supports ISL99227 60A smart power stage
- Supports DCR sense with integrated temperature compensation
- Supports ISL6617A phase doubler for up to 14-phase operation
- Comprehensive fault management enables high-reliability systems
- Pulse-by-pulse phase current limiting
- Total output current protection
- Output and input OV/UV protection
- Open voltage sense detect
- Black box recording capability for faults
- Configurable Catastrophic Failure Protection (CFP) flag output
- Intuitive configuration with PowerNavigator GUI
- SMBus/PMBus v1.3 compatible
- Up to 2MHz bus interface
- NVM to store up to eight configurations
- Pb-free (RoHS compliant)
Applications
- High-performance servers core or memory rail
- High-performance graphics rail
- High-end desktop with overclocking option
- Networking, data center, storage, and general-purpose
Publicerad: 2019-11-05
| Uppdaterad: 2023-10-25