Texas Instruments TPS54325PWPR | 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

• D-CAP2™ Mode Enables Fast Transient Response
• Low Output Ripple and Allows Ceramic Output Capacitor
• Wide VCC Input Voltage Range: 4.5 V to 18 V
• Wide VIN Input Voltage Range: 2.0 V to 18 V
• Output Voltage Range: 0.76 V to 5.5 V
• Highly Efficient Integrated FET’s Optimized for Lower Duty - Cycle Applications – 120 mΩ (High Side) and 70 mΩ (Low Side)
• High Efficiency, less than 10 µA at shutdown
• High Initial Bandgap Reference Accuracy
• Adjustable Soft Start
• Pre-Biased Soft Start
• 700-kHz Switching Frequency (fSW)
• Cycle By Cycle Over Current Limit
• Power Good Output

Typical applications

• Digital TV Power Supply / High Definition Blu-ray Disc™ Players
• Networking Home Terminal / Digital Set Top Box (STB)

More information

• Datasheet
• IC product information