The TIDA-00649 reference design demonstrates energy harvesting from 4-mA to 20-mA loop-powered systems. The design is simple to insert into existing installations where it scavenges energy from the loop and generates a regulated output voltage. Furthermore, the circuit provides an analog output representing the actual loop current value. The insertion loss can be as low as 400 mV and can also be increased up to 2.85 V to address higher output power levels. All these features provide an easy way for powering wireless adapters (WirelessHART® , Bluetooth® low energy (BLE), and so forth), indicators, displays, Human Machine Interfaces (HMIs), and others for a seamless upgrade of existing 4-mA to 20-mA loop-powered systems.
| Output voltage options | TIDA-00649.1 |
|---|---|
| Vin (Min) (V) | .4 |
| Vin (Max) (V) | 2.85 |
| Vout (Nom) (V) | 3.3 |
| Iout (Max) (A) | .015 |
| Output Power (W) | .0495 |
| Isolated/Non-Isolated | Non-Isolated |
| Input Type | DC |
| Topology | Boost^Buck |
A fully assembled board has been developed for testing and performance validation only, and is not available for sale.
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Reference design overview and verified performance test data
Detailed schematic diagram for design layout and components
Complete listing of design components, reference designators, and manufacturers/part numbers
Detailed overview of design layout for component placement
Files used for 3D models or 2D drawings of IC components
Design file that contains information on physical board layer of design PCB
PCB layer plot file used for generating PCB design layout
Includes TI products in the design and potential alternatives.
| Type | Title | Date | ||
|---|---|---|---|---|
| * | Design guide | 4-mA to 20-mA Loop Energy Harvester Reference Design (Rev. A) | Feb. 07, 2017 | |
| White paper | Valuing wide VIN, low EMI synchronous buck circuits for cost-driven, demanding a (Rev. A) | Apr. 10, 2019 | ||
| Analog Design Journal | Low-EMI buck powers a multivariable sensor transmitter with BLE connectivity | Oct. 24, 2016 | ||
| Analog Design Journal | Low-IQ synchronous buck converter enables intelligent field-sensor applications | Apr. 26, 2016 |
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