MAX15569
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MAX15569

2-Phase/1-Phase, QuickTune-PWM Controller with Serial I²C Interface

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ARM Core VR Solution and General I²C Controller

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Part Details
Part Models 1
1ku List Price
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Features
  • Multiphase Controller Maximizes Processor Performance
    • 2-Phase QuickTune-PWM CPU Core Regulator
    • Output-Voltage Control
    • Active Load-Line Amplifier with Adjustable Gain
    • ±5mV FB Accuracy Over Line and Load
    • Programmable Slew Rate and Soft-Start
    • Accurate Current Balance and Current Limit
    • True Differential Remote Output Sense
    • 8-Bit ADC Digitizes Current Sense to Store in Current Monitor Register
  • Transient Phase Overlap Reduces Output Capacitance
  • Programmable Functionality Allows Optimized Design Performance
    • Programmable 300kHz to 1400kHz Switching Frequency
    • Programmable Soft-Shutdown (2kΩ Discharge Switch)
    • I2C Serial-Interface Control
  • Robust Protection for Reliable Operation
    • Overcurrent, Output-Voltage Overrange, Overvoltage, Undervoltage, and Thermal-Fault Protection
    • System Status Register
    • Multifunction Active-Low INT Output
    • 4.5V to 24V Battery Input Range
Additional Details
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The MAX15569 step-down controller consists of one multiphase regulator. The multiphase CPU regulator uses Maxim’s unique 2-phase QuickTune-PWM constant “on-time” architecture. The 2-phase CPU regulator runs 180° out-of-phase for true interleaved operation, minimizing input capacitance.

The device’s VR is controlled by writing appropriate data into a function-mapped register file. Output voltages are dynamically changed through a 2-wire, fast I²C interface (clock, data), allowing the switching regulator to be programmed to different voltages. A slew-rate controller allows controlled voltage transition and controlled soft-start. The regulator runs in a unique smart, low-power pulse-skipping-state algorithm for best efficiency over the full load range and the best transient response with respect to common pulse-skipping methods.

The device includes multiple fault-protection features: Output overvoltage protection (OVP), undervoltage protection (UVP), and thermal protection. When any of these fault-protection features detect a fault condition, the controller shuts down. A multifunction active-low INT output monitors output voltage, overcurrent (OC), overrange (VOUTMAX), and thermal faults (active-low VRHOT).

The controller has a programmable switching frequency, allowing 300kHz to 1400kHz per each phase of operation. The controller operates with a wide variety of drivers and MOSFETs, such as the MAX15492 MOSFET driver with standard MOSFETs, or with the power stage that integrates the drivers and MOSFETs together in a single device.

Applications

  • ARM Core Power Supply
  • Multiphase DC-DC Controllers
  • Ultrabooks and Tablet Core Supply
  • Voltage-Positioned Step-Down Converter
Part Models 1
1ku List Price
price unavailable

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Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
MAX15569GTG+T
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PCN

Oct 11, 2013

- 1345

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MAX15569GTG+T

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