The ISL69144 is a digital dual output, multiphase PWM controller designed to be compliant with AMD SVI2 specifications. The digital multiphase controller can be configured to support any desired phase assignments up to a maximum of four phases across the two outputs (X and Y). For example, 3+1, 2+2, or even a single output operation as a 4+0 configuration are supported. With a flexible X+Y ≤ 4-phase assignment along with PMBus and SVI2 interfaces, it is ideal for controlling the microprocessor core, memory and system rails of AMD SVI2 based platforms.
The ISL69144 utilizes Intersil’s proprietary digital linear predictive current modulation scheme to achieve the industry’s best combination of transient response and ease of tuning while addressing the challenges of powering the latest generation of AMD microprocessors. Configuration is accomplished via Intersil’s 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 ISL69144 supports 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.
With minimal external components, ability to store eight configurations, robust fault management, and highly accurate regulation capability, implementing a high-performance, multiphase regulator has never been easier.
Key Differences in Family| Product | Phase Configuration Output X/Output Y | AMD VR Specification Supported | Package | Datashort
(Datasheet is Restricted) |
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| ISL69144 | X+Y ≤ 4 | SVI2 | TQFN 40 Ld, 5x5mm | isl69144.pdf |
| ISL69147 | X+Y ≤ 7 | SVI2 | QFN 48 Ld, 6x6mm | isl69147.pdf |
Key Features
- Advanced linear digital modulation scheme
- Zero latency synthetic current control for excellent high frequency current balance
- Auto phase add/drop for excellent load vs efficiency profile
- Excellent DVID performance
- Dual edge modulation for faster transient response
- Up to 1MHz 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
- 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 Flag (CFP) output
- Intuitive configuration via PowerNavigator™
- SMBus/PMBus v1.3 compatible
- Up to 2MHz bus interface
- NVM to store up to eight configurations
- Pb-free (RoHS compliant)
Applications
- Core and graphic for AMD SVI2 based processor
- High performance servers core rail
- High performance graphic rail
- High-end desktop with overclocking option
- Networking, data center, storage, and general purpose
Order Information| Part Number | Package Type | Weight(g) | Pins | MSL Rating | Peak Temp (°C) | RoHS Status |
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| ISL69144IRAZ-T | 40 Ld TQFN T+R | 0.065 | 40 | 3 | 260 | RoHS |
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| ISL69144IRAZ-T7A | 40 Ld TQFN T+R | 0.065 | 40 | 3 | 260 | RoHS |
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| ISL69144IRAZ | 40 Ld TQFN | 0.065 | 40 | 3 | 260 | RoHS |
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