MAX15002

Dual-Output Buck Controller with Tracking/Sequencing

Flexible, Dual Controller Delivers 15A Per Output with Sequencing and Tracking Control


Please check latest availability status for a specific part variant.

Description

The MAX15002 is a dual-output, pulse-width-modulated (PWM), step-down DC-DC controller with tracking and sequencing options. The device operates over the input voltage range of 5.5V to 23V or 5V ±10%. Each PWM controller provides an adjustable output down to 0.6V and delivers at least 15A of load current with excellent load and line regulation. The MAX15002 is optimized for high-performance, small-size power management solutions.

The options of Coincident Tracking, Ratiometric Tracking, and Output Sequencing allow the tailoring of the power-up/power-down sequence depending on the system requirements. Each of the MAX15002 PWM sections utilizes a voltage-mode control scheme with external compensation, allowing for good noise immunity and maximum flexibility with a wide selection of inductor values and capacitor types. Each PWM section operates at the same, fixed switching frequency that is programmable from 200kHz to 2.2MHz and can be synchronized to an external clock signal using the SYNC input. Each converter operating at up to 2.2MHz with 180° out-of-phase, increases the input capacitor ripple frequency up to 4.4MHz, thereby significantly reducing the RMS input ripple current and the size of the input bypass capacitor requirement.

The MAX15002 includes internal undervoltage lockout with hysteresis, digital soft-start/soft-stop for glitch-free power-up and power-down of the converter. The power-on reset (active-low RESET) with an adjustable timeout period monitors both outputs and provides a active-low RESET signal to the processor when both outputs are within regulation. Protection features include lossless valley-mode current limit and hiccup mode output short-circuit protection.

The MAX15002 is available in a space-saving, 6mm x 6mm, 40-pin TQFN-EP package and is specified for operation over the -40°C to +125°C automotive temperature range. See the MAX15003 data sheet for a triple version of the MAX15002.
MAX15002: Functional Diagram MAX15002: Functional Diagram Enlarge+

Key Features

  • 5.5V to 23V or 5V ±10% Input Voltage Range
  • Dual-Output Synchronous Buck Controller
  • Selectable In-Phase or 180° Out-of-Phase Operation
  • Output Voltages Adjustable from 0.6V to 0.85VIN
  • Lossless Valley-Mode Current Sensing or Accurate Valley Current Sensing Using RSENSE
  • External Compensation for Maximum Flexibility
  • Digital Soft-Start and Soft-Stop
  • Sequencing or Coincident/Ratiometric VOUT Tracking
  • Individual PGOOD Outputs
  • Active-Low RESET Output with a Programmable Timeout Period
  • 200kHz to 2.2MHz Programmable Switching Frequency
  • External Frequency Synchronization
  • Hiccup Mode Short-Circuit Protection
  • Space-Saving (6mm x 6mm) 40-Pin TQFN Package

Applications/Uses

  • Networking/Server Power Supplies
  • PCI Express® Host Bus Adapter Power Supplies
  • Point-of-Load DC-DC Converters
Part NumberVIN
(V)
VIN
(V)
VOUT1
(V)
VOUT1
(V)
Output Adjust. MethodIOUT1
(A)
Switch TypeSynchronous SwitchingDC-DC OutputsOper. Freq.
(kHz)
Package/PinsBudgetary
Price
minmaxminmaxSee Notes
MAX15002 4.5230.618Resistor20ExternalYes22200
TQFN/40
$4.24 @1k
See All Step-Down Switching Regulators (367)
Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

Technical Documents

Tutorial 5133 Power-Supply Solutions for Altera FPGAs
Tutorial 5132 Power-Supply Solutions for Xilinx FPGAs

Quality and Environmental Data

Request Reliability Report for: MAX15002 
Lead-Free Package Tin (Sn) Whisker Reports

CAD Symbols and Footprints

  • MAX15002ATL+
  • MAX15002ATL+T
  • Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C  

    Note : The failure rates are summarized by technology and mapped to the associated material part numbers. The failure rates are highly dependent on the number of units tested.

    Quality Management System >
    Environmental Management System >

     
    Status:
    Package:
    Temperature:

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