Texas Instruments TPS60402 | Demoboard TIDA- 010018

Description

This reference design provides power and data isolation for low and ultra-low power applications. Generating isolated and non-isolated power rails with a high efficiency and containing a power efficient isolated data interface for three forward- plus one reverse-direction channels. Targeted applications are isolated loop powered 4- to 20-mA transmitters. This design can be adapted to other applications requiring highly-efficient power conversion and isolated data transmission while being powered from sources with a limited current capability.

Features

• Power input 5 VDC, source needs to be current limited to < 30 mA
• Ultra-low power, isolated data interface
  • 5, 16, 130 μA per channel at 10, 100, 1000 kbps
  • 3 forward-channels, 1 reverse-channel
• Isolated 10-mA DC/DC Converter Efficiency up to 86.5%
• 3.3-V, 10-mA buck converter on non-isolated side Efficiency up to 93%, VOUT ripple < 15 mVpp
• 3.3-V, 10-mA buck converter on isolated side Efficiency up to 92%, VOUT ripple < 20 mVpp
• 3.0-V, 10-mA LDOs IQ = 16 μA @ Iout = 1 mAPSRR > 36 dB at ≤ 200 kHz

Typical applications

• Temperature transmitter / Flow transmitter / Pressure transmitter

More information

• Datasheet
• IC product information