MAX17582
Dual-Phase, Quick-PWM Controller for IMVP-6.5 CPU Core Power Supplies
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Dual-Phase Intel IMVP-6.5 CPU Controller for Montevina Platforms
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Features
- Single-/Dual-Phase, Quick-PWM Controller
- ±8mV VOUT Accuracy Over Line, Load, and Temperature
- 7-Bit 0 to 1.50V VID Control
- Dynamic Phase Selection Optimizes Active/Sleep Efficiency
- Transient Phase Overlap Reduces Output Capacitance
- Integrated Boost Switches
- Active Voltage Positioning with Adjustable Gain
- Programmable 200kHz to 800kHz Switching Frequency
- Accurate Current Balance and Current Limit
- Adjustable Slew-Rate Control
- Power-Good, Clock Enable, and Thermal-Fault Outputs
- Phase Current Imbalance Fault Output
- Drives Large Synchronous Rectifier MOSFETs
- 4V to 26V Battery Input-Voltage Range
- Undervoltage and Thermal-Fault Protection
- IMVP-6.5 Power Sequencing and Timing Compliant
- Soft-Startup and Soft-Shutdown
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The MAX17582 is a 2-/1-phase-interleaved Quick-PWM™ step-down VID power-supply controller for notebook CPUs. True out-of-phase operation reduces input-ripple-current requirements and output-voltage ripple, while easing component selection and layout difficulties. The Quick-PWM control provides instantaneous response to fast load-current steps. Active voltage positioning reduces power dissipation and bulk output capacitance requirements and allows ideal positioning compensation for tantalum, polymer, or ceramic bulk output capacitors.
A slew-rate controller allows controlled transitions among VID codes, controlled soft-start and shutdown, and controlled exit from suspend. A thermistor-based temperature sensor provides a programmable thermal-fault output (active-low VRHOT). A current-monitor output (IMON) provides an analog current output proportional to the power consumed by the CPU. The MAX17582 includes output undervoltage and thermal protection. When any of these protection features detect a fault, the controller shuts down. A voltage-regulator power-OK (PWRGD) output indicates the output is in regulation. Additionally, the MAX17582 features true differential current sense and a phase-good (PHASEGD) output that indicates a phase imbalance fault condition.
The MAX17582 implements the Intel IMVP-6.5 VID code set. The MAX17582 is available in a 6mm x 6mm, 48-pin TQFN package.
Applications
- Blade Servers
- IMVP-6.5 Core Power Supply
- Multiphase CPU Power Supply
- Notebooks/Desktop Computers
- Voltage-Positioned Step-Down Converters
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MAX17582
Documentation
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Software & Part Ecosystem
| Parts | Product Life Cycle | Description | ||
|---|---|---|---|---|
|
External Power Switch Buck Controllers1 |
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|
PRODUCTION |
Dual-Phase, Quick-PWM Controllers for IMVP-6+/IMVP-6.5 CPU Core Power Supplies |
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VID Voltage Programmers4 |
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Obsolete |
Dual-Phase, Quick-PWM Controllers for IMVP-6+/IMVP-6.5 CPU Core Power Supplies |
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|
PRODUCTION |
1-Phase Quick-PWM Intel IMVP-6.5/GMCH Controllers |
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|
PRODUCTION |
1-Phase, Quick-PWM Intel IMVP-6/GMCH Controllers |
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|
PRODUCTION |
Dual-Phase, Quick-PWM Controllers for IMVP6+/IMVP6.5 |
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Evaluation Kits 1
MAX17582EVKIT
Evaluation Kit for the MAX17582
Features and Benefits
- Dual-Phase, Fast-Response Interleaved, Quick-PWM
- Intel IMVP-6.5 Code-Set Compliant (Calpella Socket Configuration)
- Dynamic Phase Selection Optimizes Active/Sleep Efficiency
- Transient Phase Overlap Reduces Output Capacitance
- Active Voltage Positioning with Adjustable Gain
- High Speed, Accuracy, and Efficiency
- Low Bulk Output Capacitor Count
- 7V to 24V Input-Voltage Range
- 0 to 1.5000V Output-Voltage Range (7-Bit DAC)
- 60A Peak Load-Current Capability (30A Each Phase)
- Accurate Current Balance and Current Limit
- 300kHz Switching Frequency (per Phase)
- Power-Good (PWRGD) and Phase-Good (PHASEGD) Outputs and Indicators
- Clock Enable (Active-Low CLKEN) and Thermal Fault (Active-Low VRHOT) Outputs and Indicators
- Current Monitor (IMON) Output
- Undervoltage Fault Protections
- 48-Pin Thin QFN Package with an Exposed Pad
- Fully Assembled and Tested
Product Detail
The MAX17582 evaluation kit (EV kit) demonstrates the high-power, dynamically adjustable, multiphase IMVP-6.5 notebook CPU application circuit. This DC-DC converter steps down high-voltage batteries and/or AC adapters, generating a precision, low-voltage CPU core VCC rail. The MAX17582 EV kit meets the Intel mobile IMVP-6.5 CPU's transient voltage specification, power-good signaling, voltage regulator thermal monitoring (active-low VRHOT), and power-good output (PWRGD). The MAX17582 EV kit consists of the MAX17582 2-phase interleaved Quick-PWM™ step-down controller. The MAX17582 EV kit includes active voltage positioning with adjustable gain, reducing power dissipation, and bulk output capacitance requirements. A slew-rate controller allows controlled transitions between VID codes, controlled soft-start and shutdown, and controlled exit suspend voltage. Precision slew-rate control provides "just-in-time" arrival at the new DAC setting, minimizing surge currents to and from the battery.
Two dedicated system inputs (active-low PSI and DPRSLPVR) dynamically select the operating mode and number of active phases, optimizing the overall efficiency during the CPU's active and sleep states.
The MAX17582 includes latched-output undervoltage-fault, overvoltage-fault, and thermal-overload protection. It also includes a voltage regulator power-good (PWRGD) output, a clock enable (active-low CLKEN) output, a current monitor output (IMON), and a phase-good (PHASEGD) output.
This fully assembled and tested circuit board provides a digitally adjustable 0 to 1.5000V output voltage (7-bit on-board DAC) from a 7V to 24V battery input range. Each phase is designed for a 20A thermal design current, and delivers up to 30A peak output current for a total of 60A. The MAX17582 EV kit operates at 300kHz switching frequency (per phase) and has superior line- and load-transient response.
Applications
- Blade Servers
- IMVP-6.5 Core Power Supply
- Multiphase CPU Power Supply
- Notebooks/Desktop Computers
- Voltage-Positioned Step-Down Converters