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Integrated, Step-Down Switching Regulator with PMBus

Monolithically Integrated, PMBus Enabled Step-Down Switching Regulator with High Power Density and Low Component Count

Product Details

Key Features

Parametric specs for Step-Down Switching Regulators
VIN (V) (min) 4.5
VIN (V) (max) 16
VOUT1 (V) (min) 0.6
VOUT1 (V) (max) 5.5
IOUT1 (A) (max) 40
Switch Type Internal
Preset VOUT (V) 1
Output Adjust. Method Digital/VID
Preset
Resistor
Synchronous Switching? Yes
Power Good Signal Yes
# DC-DC Outputs 1
Switching Frequency (kHz) 400
600
800
Design Tools EE-Sim
Package/Pins FCQFN/15
Budgetary
Price (See Notes)
5.64
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Simplified Block Diagram

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Parameters

Parametric specs for Step-Down Switching Regulators
VIN (V) (min) 4.5
VIN (V) (max) 16
VOUT1 (V) (min) 0.6
VOUT1 (V) (max) 5.5
IOUT1 (A) (max) 40
Switch Type Internal
Preset VOUT (V) 1
Output Adjust. Method Digital/VID
Preset
Resistor
Synchronous Switching? Yes
Power Good Signal Yes
# DC-DC Outputs 1
Switching Frequency (kHz) 400
600
800
Design Tools generateDesignEESIMUrl('http://maxim.transim.com/pwm2/designreq/Index?partId=5710', '')
Package/Pins FCQFN/15
Budgetary
Price (See Notes)
5.64

Key Features

  • High Power Density and Low Component Count
    • Overall Solution Size 509mm2 Including Inductor and Output Capacitors
    • 90.7% Peak Efficiency with VDDH = 12V and VOUT = 1V
    • Fast Transient Response: Supports Up to 300A/μs Load-Step Transients
  • Optimized Component Performance and Efficiency with Reduced Design-In Time
    • PMBus-Compliant Interface for Telemetry and Power Management
    • Voltage, Current, and Temperature Reporting through the Digital Bus
  • Increased Power-Supply Reliability with System and IC Self-Protection Features
    • Differential Remote Sense with Open-Circuit Detection
    • Hiccup Overcurrent Protection
    • Programmable Thermal Shutdown

Applications/Uses

  • Communications Equipment
  • I/O
  • Memory VDDQ
  • Networking Equipment
  • Point-of-Load Voltage Regulators
  • Servers and Storage Equipment
  • μP Chipsets

Description

The MAX20734 is a fully integrated, highly efficient switching regulator with PMBus for applications operating from 4.5V to 16V and requiring up to 40A (max) load. This single-chip regulator provides extremely compact, high-efficiency power-delivery solutions with high-precision output voltages and excellent transient response for networking, datacom, and telecom equipment.

The IC offers a broad range of programmable features through either the PMBus or a capacitor and resistor connected to a dedicated programming pin. Using this feature, the operation can be optimized for a specific application, reducing the component count and/or setting appropriate trade-offs between the regulator’s performance and system cost. Ease of programming enables using the same design for multiple applications.

The IC includes protection and telemetry features. Positive and negative cycle-by-cycle overcurrent protection and overtemperature protection ensure a rugged design. Input undervoltage lockout shuts down the device to prevent operation when the input voltage is out of specification. A status pin provides an output signal to show that the output voltage is within range and the system is regulating.

PMBus is a trademark of SMIF, Inc.

Simplified Block Diagram

MAX20734: Typical Application Circuit MAX20734: Typical Application Circuit Zoom icon

Technical Docs

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .