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Texas Instruments LM25017 | Demoboard RD006
3W Isolated Bias Supply for Communication Interfaces and Measurement Systems
Details
| Topologie | Abwärtswandler |
| Eingangsspannung | 18-32 V |
| Ausgang 1 | 5.19 V / 0.3 A |
| Ausgang 2 | 4.93 V / 0.3 A |
| Ausgang 3 | 5.25 V / 0.3 A |
| IC-Revision | a |
Beschreibung
This reference design presents an auxiliary supply with two output voltage rails of 5 V, galvanically-isolated from each other, with a combined maximum output power of up to 3 W (i.e. 0.3 A output current per rail). Tightly regulated, lower voltage rails like 3.3 V, 2.5 V or 1.2 V can be easily obtained by cascading a low-dropout linear voltage regulator (a.k.a. LDO) to the required output rail. The design targets applications like isolated communication interfaces and data acquisition systems, as well as many systems using sensors, voltage-level-shifters, digital isolators, or opto-couplers, amongst others.
Eigenschaften
- Extremely compact (20 x 20 x 5.3) (L x W x H) (mm)
- Wide input voltage range from 18 to 32 V
- Primary output voltage: 5.1 V ± 1%
- Secondary output voltage (balanced load): 4.8 V ± 5%
- Secondary output voltage (unbalanced load): 4.8 V ± 10%
- Output power up to 3 W
- Peak efficiency of 82 %
- LM25017 IC Controller (Texas Instruments)
- WE-TDC-HV Coupled Inductor with 2 kV Isolation
- Buck converter with additional isolated output topology
Typische Anwendungen
- 3W Isolated Bias Supply
- Sensor and actuator systems
- Isolated Signal and Communication Interfaces
Weiterführende Informationen
Artikeldaten
| Artikel Nr. | Datenblatt | Simulation | Downloads | Produktserie | C | Tol. C | VR (V (DC)) | Bauform | Betriebstemperatur | DF (%) | RISO | Keramiktyp | L (mm) | W (mm) | H (mm) | Fl (mm) | Verpackung | Betriebstemperatur | L1 (µH) | L2 (µH) | n | IR 1 (A) | IR 2 (A) | ISAT1 (A) | ISAT2 (A) | RDC1 typ (mΩ) | RDC2 typ (mΩ) | RDC1 max (mΩ) | RDC2 max (mΩ) | fres 1 (MHz) | Muster | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | 885342208024 | SPEC | 7 Dateien | WCAP-CSMH Mid and High Voltage | 1 nF | ±10% | 2000 | 1206 | -55 °C bis zu +125 °C | 2.5 | 10 GΩ | X7R Klasse II | 3.2 | 1.6 | 1.6 | 0.6 | 7" Tape & Reel | -55 °C up to +125 °C | – | – | – | – | – | – | – | – | – | – | – | – | ||
 | 885012206087 | SPEC | 8 Dateien | WCAP-CSGP MLCCs 50 V(DC) | 4.7 nF | ±10% | 50 | 0603 | – | 2.5 | 10 GΩ | X7R Klasse II | 1.6 | 0.8 | 0.8 | 0.4 | 7" Tape & Reel | -55 °C up to +125 °C | – | – | – | – | – | – | – | – | – | – | – | – | ||
| 885012206065 | SPEC | 8 Dateien | WCAP-CSGP MLCCs 25 V(DC) | 10 nF | ±10% | 25 | 0603 | – | 3.5 | 10 GΩ | X7R Klasse II | 1.6 | 0.8 | 0.8 | 0.4 | 7" Tape & Reel | -55 °C up to +125 °C | – | – | – | – | – | – | – | – | – | – | – | – | ||
| 885012206095 | SPEC | 8 Dateien | WCAP-CSGP MLCCs 50 V(DC) | 100 nF | ±10% | 50 | 0603 | – | 3 | 5 GΩ | X7R Klasse II | 1.6 | 0.8 | 0.8 | 0.4 | 7" Tape & Reel | -55 °C up to +125 °C | – | – | – | – | – | – | – | – | – | – | – | – | ||
| 885012206121 | SPEC | 8 Dateien | WCAP-CSGP MLCCs 50 V(DC) | 330 nF | ±10% | 50 | 0603 | -55 °C bis zu +125 °C | 10 | 1.5 GΩ | X7R Klasse II | 1.6 | 0.8 | 0.8 | 0.4 | 7" Tape & Reel | -55 °C up to +125 °C | – | – | – | – | – | – | – | – | – | – | – | – | ||
| 885012207023 | SPEC | 8 Dateien | WCAP-CSGP MLCCs 10 V(DC) | 1.5 µF | ±10% | 10 | 0805 | – | 5 | 0.3 GΩ | X7R Klasse II | 2 | 1.25 | 1.25 | 0.5 | 7" Tape & Reel | -55 °C up to +125 °C | – | – | – | – | – | – | – | – | – | – | – | – | ||
| 885012209048 | SPEC | 8 Dateien | WCAP-CSGP MLCCs 50 V(DC) | 4.7 µF | ±10% | 50 | 1210 | – | 5 | 0.02 GΩ | X7R Klasse II | 3.2 | 2.5 | 2.5 | 0.6 | 7" Tape & Reel | -55 °C up to +125 °C | – | – | – | – | – | – | – | – | – | – | – | – | ||
| 885012208019 | SPEC | 8 Dateien | WCAP-CSGP MLCCs 10 V(DC) | 22 µF | ±10% | 10 | 1206 | – | 10 | 0.005 GΩ | X7R Klasse II | 3.2 | 1.6 | 1.6 | 0.5 | 7" Tape & Reel | -55 °C up to +125 °C | – | – | – | – | – | – | – | – | – | – | – | – | ||
 | 76889440330 | SPEC | 8 Dateien | WE-TDC HV SMT Doppeldrossel | – | – | 250 | 8038 | -40 °C bis zu +125 °C | – | – | – | 8 | 8 | 3.8 | – | – | -40 °C up to +125 °C | 33 | 33 | 1:1 | 0.85 | 0.85 | 1.85 | 1.85 | 575 | 575 | 640 | 640 | 14 |
| Artikel Nr. | Datenblatt | Simulation | |
|---|---|---|---|
| 885342208024 | SPEC | |
| 885012206087 | SPEC | |
| 885012206065 | SPEC | |
| 885012206095 | SPEC | |
| 885012206121 | SPEC | |
| 885012207023 | SPEC | |
| 885012209048 | SPEC | |
| 885012208019 | SPEC | |
| 76889440330 | SPEC |
| Muster |
|---|
| Artikel Nr. | Datenblatt | Simulation | Downloads | Produktserie | C | Tol. C | VR (V (DC)) | Bauform | Betriebstemperatur | DF (%) | RISO | Keramiktyp | L (mm) | W (mm) | H (mm) | Fl (mm) | Verpackung | Betriebstemperatur | L1 (µH) | L2 (µH) | n | IR 1 (A) | IR 2 (A) | ISAT1 (A) | ISAT2 (A) | RDC1 typ (mΩ) | RDC2 typ (mΩ) | RDC1 max (mΩ) | RDC2 max (mΩ) | fres 1 (MHz) | Muster |
|---|