Texas Instruments TPS650250RHBR | 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

• 1.6 A, 97% Efficient Step-Down Converter for System Voltage (VDCDC1)
  • 3.3 V, 2.8 V, or Adjustable
• 0.8 A, up to 95% Efficient Step-Down Converter for Memory Voltage (VDCDC2)◦1.8 V, 2.5 V, or Adjustable
• 0.8 A, 90% Efficient Step-Down Converter for Processor Core (VDCDC3)
• Adjustable Output Voltage on VDCDC3
• 30-mA LDO for Vdd_alive
• 2 × 200 mA General-Purpose LDOs (LDO1 and LDO2)
• Dynamic Voltage Management for Processor Core
• LDO1 and LDO2 Voltage Externally Adjustable
• Separate Enable Pins for Inductive Converters
• 2.25-MHz Switching Frequency
• 85-µA Quiescent Current
• Thermal Shutdown Protection

Typical applications

• Cellular, Smart Phones / Digital Still Cameras
• GPS
• Split Supply DSP and μP Solutions / Samsung ARM-Based Processors

More information

• Datasheet
• IC product information