Two-Stage Power Supply Reference Design for Field Transmitters

(ACTIVE) PMP15039

Description & Features

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Key Document

Description

This dual output reference design provides an example of how to power FPGAs, ASICs, or MCUs when space-constraints are a primary concern. The wide 6-V to 60-V input voltage range and the use of ultra-small and highly efficient DC/DC converters makes the design well suited for applications like industrial sensors, field transmitters, motor drives, and PLC modules. The two-stage approach provides a 1.5% accurate 5-V rail and a 1.5-V point of load rail with 1% accuracy across the entire temperature range. The output voltages are adjustable and can be adapted to the specific needs of the user.

Features
  • Operates over a wide input voltage from 6 V to 60 V with transient protection up to 66 V
  • Dual Outputs: 5 V at 300 mA, 1.5 V at 1 A
  • Small Solution Size (9.25 mm x 18 mm)
  • Scalable for Industrial Power Supplies 
  • Peak System Efficiency > 90%

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Schematic/Block Diagram

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Test Data

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Design Files

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Bill of Materials (BOM)

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Parametrics
 PMP15039.1
(Output Voltage 1)
PMP15039.2
(Output Voltage 2)
Vin (Min) (V)66
Vin (Max) (V)6060
Vout (Nom) (V)51.5
Iout (Max) (A).31
Output Power (W)1.51.5
Isolated/Non-IsolatedNon-IsolatedNon-Isolated
Input TypeDCDC
TopologyBuck- SynchronousBuck- Synchronous
Designed forFPGA
ASIC
FPGA
ASIC

TI Devices (3)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
LMR36006  4.2-V to 60-V, 0.6-A Synchronous Step-Down Converter in HotRod™ Package  Step-down (buck)  Sample & Buy View Design Kits & Evaluation Modules
LMR36015  4.2 V to 60 V, 1.5-A Synchronous Step-Down Converter in HotRod™ Package  Step-down (buck)  Sample & Buy View Design Kits & Evaluation Modules
TPS62821  1A Step-Down Converter With 1% Accuracy in 1.5x2mm QFN  Step-down (buck)  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
LMR36015 Download -
TPS62821 Download Download

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Technical Documents

View the Important Notice for TI Designs covering authorized use, intellectual property matters and disclaimers.

User guides (1)
Title Abstract Type Size (KB) Date Views TI Recommends
PDF 1429 23 May 2018 76
Design files (6)
Title Abstract Type Size (KB) Date Views
PDF 267 23 May 2018 4
ZIP 2331 23 May 2018 7
PDF 75 23 May 2018 11
PDF 54 23 May 2018 11
PDF 90 23 May 2018 58
ZIP 208 23 May 2018 6

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