Texas Instruments LM73605RNPR | Demoboard TIDA-010011

Description

This reference design showcases various power architectures for generating multiple voltage rails for an application processor module, requiring >1A load current and high efficiency . The required power supply is generated using 5-, 12- or 24-V DC input from the backplane. Power supplies are generated using DC-DC converters with an integrated FET and a power module with an integrated inductor for size. The design features a HotRod™ package type for applications requiring low EMI. It is also optimal for design time constrained applications. Additional features include DDR termination regulator, input supply OR-ing, voltage sequencing, eFuse for overload protection, and voltage and load current monitoring. This design can be used with a processor, digital signal processor and field-programmable gate array. It has been tested for radiated emission, per CISPR22 meeting class A and B requirements.

Features

• Synchronous Rectification
• Wettable Flanks QFN Package (WQFN)
• Low Quiescent Current
  • 0.8 µA in Shutdown (typical)
  • 15 µA in Active Mode with No Load (typical)
• Wide Voltage Conversion Range:
  • tON_MIN = 60 ns (typical)
  • tOFF_MIN = 70 ns (typical)
• Low MOSFET ON-Resistance:
  • RDS_ON_HS = 53 mΩ (typical)
  • RDS_ON_LS = 31 mΩ (typical)
• External Bias Input to Improve Efficiency
• Pin-Selectable Auto Mode or Forced PWM Operation
• Adjustable Frequency Range: 350 kHz to 2.2 MHz
• Synchronizable to External Clock
• Internal Compensation
• Power-Good Flag
• Precision Enable to Program System UVLO
• Flexible Soft-Start Features:
  • Start-up into Pre-Biased Load
  • Fixed or Adjustable Soft-Start Time
  • Output Voltage Tracking
• Cycle-by-Cycle Current Limiting
• Short-Circuit Protection With Hiccup Mode
• Thermal Shutdown Protection

Typical applications

• Industrial Distributed Power Applications
• Telecommunications Systems
• General-Purpose Wide VIN Regulation

More information

• Datasheet
• IC product information