DCP020505U/1K - 2W Isolated DC/DC 5V 400mA | Texas Instruments
Teilenummer: DCP020505U/1K ✓ Aktiv| Menge | Stückpreis | Gesamt |
|---|---|---|
| 1 | $13.04 | $13,04 |
| 10 | $13.04 | $130,40 |
| 100 | $13.04 | $1.304,00 |
| 500 | $13.04 | $6.520,00 |
| 1.000 | $13.04 | $13.040,00 |
DCP020505U/1K Übersicht
An isolated DC/DC converter module is a complete switching power supply that transfers energy across a galvanic isolation barrier, creating a floating output rail that is electrically independent of the input. Within the power management hierarchy - voltage regulator, isolated DC/DC converter, power module - these devices break ground loops, provide level shifting to floating domains, and generate isolated supplies for gate drivers, isolated communication interfaces, and isolated sensors. The DCP02 series belongs to this isolated converter module category.
Key features of the DCP020505U/1K include the 2 W output power in a miniature surface-mount footprint, on-chip protection with overtemperature shutdown (OTP), an output-disable function, and a synchronization pin allowing multiple modules to lock to a common switching frequency, minimizing beat-frequency interference. Efficiency is approximately 80% at full load. The push-pull power-stage topology with an 800 kHz internal oscillator enables the compact magnetic design and small external component count - typically only input and output filter capacitors are required.
Architecturally, the module integrates a controller, power switches, and a miniature isolation transformer. Because the output is unregulated, the 5 V output tracks the input voltage and load; designs needing tighter tolerance should add a post-regulator such as an LDO on the isolated side.
Typical applications include isolated RS-485/CAN transceiver supplies, isolated gate-drive bias for power semiconductors, analog-isolated data acquisition front ends, and industrial PLC I/O channel isolation where a small, low-noise isolated 5 V rail is required.
Design consideration: because the output is unregulated, output voltage droop with load must be budgeted; verify the isolated-side load stays within 400 mA and consider post-regulation for precision rails.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
Drop-in-Alternativen für DCP020505U/1K – gleiches Gehäuse, Pin-kompatibel. Bauteile mit anderem Gehäuse, die eine PCB-Überarbeitung erfordern, sind ausgeschlossen.
Schnellvergleichstool – Wählen Sie Alternativbauteile für den Direktvergleich:
DCP020505U
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
DCP020505UE4
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
DCP020505P
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
DCP020505DB
✅ Drop-In ⚠️ Spezifikationen ungeprüft📋 Referenzalternative (nicht im Katalog)
DCP020505U/1K3
✅ Drop-In ⚠️ Spezifikationen ungeprüft📋 Referenzalternative (nicht im Katalog)
DCP020505U/1K Grenzwerte & elektrische Eigenschaften
| Output Power | 2 W |
| Anzahl der Ausgänge | 1 |
| Ausgangsspannung | 5 V |
| Maximaler Ausgangsstrom | 400 mA |
| Eingangsspannungsbereich | 4.5 V to 5.5 V |
| Isolation Voltage | 1 kV |
| Topologie | Push-Pull |
| Regulation Type | Unregulated |
| Wirkungsgrad | 80% |
| Schaltfrequenz | 800 kHz (internal oscillator) |
| Eigenschaften | Output disable, synchronization, on-chip overtemperature protection (OTP) |
| Betriebstemperatur | -40C to +85C |
| Gehäuse | 28-SOIC (0.295in, 7.50mm Width), SMD |
| Montageart | Surface Mount |
| Applications | ITE (Commercial) |
| Packing | Tape & Reel (/1K suffix) |
| Series | DCP02 |
DCP020505U/1K Pin-Konfiguration
| Pin 1 | +Vs — Primary-side positive supply input (4.5 V to 5.5 V) |
| Pin 2 | SYNC/DISABLE — Synchronization input / output-disable control |
| Pin 3 | 0V — Primary-side ground (input return) |
| Pin 4 | NC — Not connected (per datasheet) |
| Pin 5 | NC — Not connected (per datasheet) |
| Pin 6 | NC — Not connected (per datasheet) |
| Pin 7 | NC — Not connected (per datasheet) |
| Pin 8 | -VOUT — Isolated negative output (floating return for single-output use) |
| Pin 9 | 0V — Secondary-side ground (isolated common) |
| Pin 10 | +VOUT — Isolated 5 V output, 400 mA max |
| Pin 11 | NC — Not connected (per datasheet) |
| Pin 12 | NC — Not connected (per datasheet) |
| Pin 13 | NC — Not connected (per datasheet) |
| Pin 14 | NC — Not connected (per datasheet) |
Typische Anwendungen
DCP020505U/1K ist geeignet für 6 Anwendungs: Isolated RS-485 / CAN Transceiver Supply, Isolated Gate-Driver Bias Supply, Isolated Analog Data Acquisition Front End, Industrial PLC I/O Channel Isolation, Test and Measurement Instrumentation, Medical-Grade Non-Patient-Contact Isolation.
Isolated RS-485 / CAN Transceiver Supply
Industrial fieldbus nodes frequently require a floating 5 V rail to power an isolated RS-485 or CAN transceiver so the communication ground is decoupled from the noisy local ground. The DCP020505U/1K fits this role directly: its 4.5 V to 5.5 V input accepts a standard 5 V logic rail, and the 400 mA output covers transceiver plus bias-resistor loads with margin. The 1 kV isolation barrier breaks ground loops over long cable runs, while the 800 kHz switching frequency keeps ripple above the transceiver signal band, simplifying filtering. Using the SYNC/DISABLE pin, several modules on a board can lock to one clock to avoid beat-frequency noise in the analog front end.
Empfohlen
Isolated Gate-Driver Bias Supply
Power converters using IGBTs or SiC MOSFETs need a floating supply referenced to the switch source to bias the gate driver. The DCP020505U/1K provides a 1 kV-isolated 5 V, 400 mA rail from the controller-side 5 V domain, which is sufficient for one gate-driver IC such as the UCC27524 family including its quiescent load. The module's overtemperature protection adds a safety layer, and the output-disable function lets a supervisory controller shut the floating bias rail down during fault conditions. Because the output is unregulated, pair it with a small post-regulator or zener clamp when the driver IC specifies a tight supply window.
Empfohlen
Isolated Analog Data Acquisition Front End
Precision measurement systems isolate the analog front end to reject common-mode noise from sensors operating at elevated or floating potentials. The DCP020505U/1K generates the clean isolated 5 V rail that powers an isolated amplifier or a precision ADC on the isolated side; the 800 kHz push-pull switching and simple LC filtering yield low residual ripple, and synchronization of multiple modules eliminates beat tones that would otherwise appear as spurs in the FFT of sampled data. With 400 mA available, one module typically powers the ADC plus its reference buffer. Budget for the unregulated output's load-dependent droop when specifying the ADC supply tolerance.
Empfohlen
Industrial PLC I/O Channel Isolation
Programmable logic controller I/O cards isolate each channel or channel group so field wiring faults and ground potential differences do not propagate into the backplane logic. The DCP020505U/1K supplies one isolated 5 V domain per channel group from the 5 V backplane rail, and its -40C to +85C operating range matches industrial cabinet environments. The 1 kV isolation suits commercial/ITE-class channel isolation, and the surface-mount SOIC footprint supports automated assembly of high-channel-count cards. Its output-disable feature allows firmware-controlled power-down of unused channel groups, cutting system standby consumption in multi-channel installations.
Empfohlen
Test and Measurement Instrumentation
Bench and portable instruments use isolated floating rails to measure circuits at different potentials without ground-loop corruption. The DCP020505U/1K creates a floating 5 V domain for sensor excitation, input attenuators, or communication subcircuits within the instrument. Its small SOIC footprint supports dense multi-channel designs where each channel needs its own floating domain, and the SYNC pin lets designers lock all channels to one clock, keeping switching spurs coherent and easily filtered or digitally removed. With 2 W per module, per-channel power budgets up to 400 mA are practical without heatsinking.
Empfohlen
Medical-Grade Non-Patient-Contact Isolation
In medical equipment, subsystems that do not contact the patient still benefit from galvanic isolation to protect electronics from defibrillation transients and ground faults. The DCP020505U/1K provides a 1 kV-isolated 5 V rail for such non-patient-contact domains - displays, communication modules, or actuator controllers - with the output-disable function enabling safe subsystem shutdown during service. Note that 1 kV functional isolation does not satisfy patient-applied-part creepage requirements; for those, a module certified for reinforced insulation at higher working voltage must be selected, with the DCP02 reserved for auxiliary floating supplies.
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Zusammenfassung der empfohlenen Produkte
Technische Referenzdaten für DCP020505U/1K – Vergleich, Designhinweise und Compliance-Informationen.
Auswahlhilfe
Vergleich mit Alternativen
| Parameter | Dieses Produkt | DCP020505U | DCP020505UE4 | DCP020505P | DCP020505DB |
|---|---|---|---|---|---|
| Package | SOIC (SMD, DCP02 package) | SOIC (SMD, DCP02 package) - same | SOIC (SMD, DCP02 package) - same | SOIC (SMD, DCP02 package family) - same | SOIC (SMD, DCP02 package family) - same |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Output Power | 2 W | 2 W | 2 W | 2 W | 2 W |
| Output Voltage / Current | 5 V / 400 mA | 5 V / 400 mA | 5 V / 400 mA | 5 V / 400 mA | 5 V / 400 mA |
| Input Voltage Range | 4.5 V to 5.5 V | 4.5 V to 5.5 V | 4.5 V to 5.5 V | 4.5 V to 5.5 V | 4.5 V to 5.5 V |
| Isolation Voltage | 1 kV | 1 kV | 1 kV | 1 kV | 1 kV |
| Efficiency | 80% | 80% | 80% | 80% | 80% |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
Wichtigste Unterscheidungsmerkmale
- Dual-function SYNC/DISABLE pin (vs. Recom R05P205S)
- Miniature surface-mount 2 W footprint (vs. Traco TEN 5-0511)
- On-chip overtemperature protection (OTP) (vs. DCP020505U (same family))
- Pin-to-pin family interchangeability (vs. Murata MEJ1S0505SC)
Designhinweise
Per the TI DCP02 series datasheet, the module requires minimal external components: place a low-ESR ceramic bypass capacitor (typically 0.1 uF to 10 uF per datasheet recommendations) close to pin 1 (+Vs) and pin 3 (primary 0V), and filter capacitors on the isolated +VOUT/0V pins. Because the primary side carries 800 kHz switching current, keep the input loop short and return switching currents directly to the primary ground pin. Do not route noisy signals under the module where the internal isolation transformer sits.
The DCP020505U/1K output is UNREGULATED: output voltage droops with load current and tracks the 4.5 V to 5.5 V input range. Designs that assume a tightly regulated 5.000 V isolated rail will see tolerance violations. Budget the droop per the datasheet load curves, or add a low-dropout post-regulator (e.g., an LDO such as the TPS76350) on the isolated side. Also note the SYNC/DISABLE pin is dual-function - leaving it floating per datasheet guidance runs the module at its free-running 800 kHz frequency; do not tie it to a logic level without consulting the datasheet application section.
Estimated: at full 2 W output and 80% efficiency, the module draws about 2.5 W from the 5 V input, dissipating roughly 0.5 W internally. In the compact SOIC-style DCP02 package this dissipation causes a modest junction rise at 85 C ambient but still warrants verification against the datasheet derating curves when stacking multiple modules on one board. Provide at least modest copper pour on primary and secondary ground pins; avoid enclosing the module under hot components such as nearby regulators or gate drivers.
Multiple unsynchronized DCP02 modules on the same board will run at slightly different switching frequencies, producing low-frequency beat notes that can appear in sensitive analog circuitry. Use the SYNC/DISABLE pin to lock all modules to one master clock so switching spurs become coherent and easy to filter. Keep the 800 kHz switching edges out of the isolation-barrier creepage region, and add a small common-mode choke or ferrite on the isolated output when powering communication transceivers over long cables.
Compliance-Informationen
Verified web data identifies the application class as ITE (Commercial). Abacus Technologies lists RoHS/REACH compliance for the DCP020505U family and a DRC conflict-free status, but these claims were not confirmed on the TI product page within the provided data; confirm on TI.com before relying on them.
