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High-Speed, Dual-Phase Gate Driver for Multiphase, Step-Down Converters

Highest Accuracy, Scalable, VRD/VRM-10 Power Chipset Reduces Capacitance by 60% in Servers and Desktops

Product Details

Key Features

Simplified Block Diagram

Technical Docs

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Key Features

  • 6A Peak Gate-Drive Current
  • Up to 1.2MHz Operation
  • Up to 6.5V Gate-Drive Voltage
  • 0.5Ω /0.95Ω Low-Side Drivers
  • Capable of 30A Output per Phase
  • Adaptive Shoot-Through Protection
  • User-Programmable Delay Time
  • TTL and CMOS Input Compatible
  • UVLO for Proper Sequencing
  • Flexible 2- to 8-Phase Implementation with MAX8524 and MAX8525
  • Space-Saving (4.9mm x 6mm) 16-Pin QSOP Package

Applications/Uses

  • Core Voltage Supplies for Pentium® IV Microprocessors
  • DC-to-DC Regulator Modules
  • Desktop Computers
  • Servers and Workstations
  • Switches, Routers, and Storage
  • Voltage Regulator Modules (VRMs)

Description

The MAX8523 dual-phase gate driver, along with the MAX8524/MAX8525 multiphase controllers, provides flexible 2- to 8-phase CPU core-voltage supplies. The 0.5Ω/0.95Ω driver resistance allows up to 30A output current per phase.

Each MOSFET driver in the MAX8523 can drive 3000pF capacitive loads with only 15ns propagation delay and 11ns typical rise and fall times, allowing operations up to 1.2MHz per phase. Adaptive dead time controls low-side MOSFET turn-on, and user-programmable dead time controls high-side MOSFET turn-on. This maximizes converter efficiency while allowing operation with a variety of MOSFETs and controller ICs. An undervoltage lockout (UVLO) circuit allows proper power-on sequencing. PWM_ signal inputs are TTL and CMOS compatible.

The MAX8523 is available in a space-saving 16-pin QSOP package and specified for -40°C to +85°C operation.

Simplified Block Diagram

MAX8523: Typical Operating Circuit MAX8523: Typical Operating 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 .

Sampling:
Selecting the Sample button above will redirect to the third-party ADI Sample Site. The part selected will carry over to your cart on this site once logged in. Please create a new account there if you have never used the site before. Contact SampleSupport@analog.com with any questions regarding this Sample Site.