High Efficiency, Small Form Factor 4-20mA Current Loop 2-wire Sensor Power Supply
PMP6938
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Description & Features

Technical Documents

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Description

The PMP6938 design uses the TPS54062 synchronous step-down DC/DC converter as an alternative to a linear regulator for 2 wire 4-20mA current loop applications. The design is optimized for small size and fits within 7mm x 15.5mm x 0.8mm board area. The input voltage withstands line transients up to 60V and is configured to deliver 3.3V/30mA at 400kHz. The output filter employs a 4.7uF ceramic output capacitor and a 1mH inductor in a small 1812 package. The efficiency peaks at 70% at 20mA from 12Vin to 3.3Vout.

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Parametrics
 PMP6938.1
(Output Voltage 1)
Vin (Min) (V)4.5
Vin (Max) (V)60
Vout (Nom) (V)3.3
Iout (Max) (A).05
Output Power (W).165
Isolated/Non-IsolatedNon-Isolated
Input TypeDC
TopologyBuck- Synchronous

TI Devices (1)

Order samples, get tools and find more information on the TI products in this reference design.

Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
TPS54062  4.7V to 60V Input, 50mA Synchronous Step-Down Converter with Low IQ  Step-down (buck)  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
TPS54062 Download Download
Download Download

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Step 2: Download the Symbol and Footprint from the CAD.bxl file table.


Technical Documents

See the Important Notice and Disclaimer covering reference designs and other TI resources.

User guides (1)
Title Type Size (KB) Date
PDF 204 10 Feb 2012
White papers (1)
Title Type Size (KB) Date
Multiple Files   10 Apr 2019
Design files (4)
Title Type Size (KB) Date
PDF 91 10 Feb 2012
ZIP 300 10 Feb 2012
PDF 26 10 Feb 2012
PDF 28 10 Feb 2012

Support & training

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