DCR010505U/1K - 1W Isolated DC/DC Converter 5V 200mA | TI
N.º de pieza: DCR010505U/1K ✓ Activo| Cant. | Precio unitario | Total |
|---|---|---|
| 1 | $0 | $0,00 |
| 10 | $0 | $0,00 |
| 100 | $0 | $0,00 |
| 500 | $0 | $0,00 |
| 1.000 | $0 | $0,00 |
DCR010505U/1K Descripción general
An isolated DC/DC converter is a power management module that transfers electrical energy across a galvanic isolation barrier, breaking ground loops and protecting downstream circuitry from upstream voltage transients. Within the power system hierarchy, isolation modules sit between a primary power rail and sensitive analog, communication, or sensor circuitry, combining transformer isolation with on-module regulation - a distinct class from non-isolated buck/boost regulators.
Key features of the DCR01 family include 1000Vrms isolation (1kV operational isolation, 1-second test), a continuous working voltage across the barrier of 60 VDC or 42.5 VAC, and UL1950 component recognition. The module switches at 400 kHz, supports device-to-device synchronization for multi-module systems, and provides thermal protection plus output short-circuit protection. With 53 W/in3 (3.3 W/cm3) power density and a reliability figure of 125 FITS at 55C, the part suits space-constrained isolation designs.
Architecturally, the DCR01 series integrates the power transformer, switching controller, synchronous rectification, and error amplifier into a single molded SOIC package, eliminating the design effort of a discrete isolated flyback supply. Output regulation accuracy is high across line and load, and output ripple noise is very low per the family description.
Typical applications include isolated RS-485/RS-232 transceiver supplies, isolated gate-drive and analog-front-end bias rails in industrial automation, isolated sensor and data-acquisition systems, and ground-loop breaking in medical and test equipment front ends.
A key design consideration: this module is a 5V-in variant, so the primary rail must stay within 4.5V-5.5V; for 12V or 24V rails, use DCR011 or DCR012 family members with the same footprint. Always verify derating versus load and ambient temperature per the datasheet.
This page synthesizes distributor stock status, same-family drop-in alternatives, and practical design notes not found in the manufacturer datasheet. Pricing is available on request as of 2026-10-19.
Alternativas directas para DCR010505U/1K — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
DCR010503U
✅ Sustitución directa ⚠️ Especificaciones sin verificar📋 Alternativa de referencia (no en el catálogo)
DCR011505U
✅ Sustitución directa ⚠️ Especificaciones sin verificar📋 Alternativa de referencia (no en el catálogo)
DCR011503U
✅ Sustitución directa ⚠️ Especificaciones sin verificar📋 Alternativa de referencia (no en el catálogo)
DCR010505U/1K Valores máximos y características eléctricas
| Topología | Isolated, regulated DC/DC converter module |
| Número de salidas | 1 |
| Tensión de salida | 5 V |
| Output Current | 200 mA |
| Output Power | 1 W |
| Rango de tensión de entrada | 4.5 V to 5.5 V (5 V nominal, +/-10%) |
| Isolation Voltage | 1000 Vrms (1 kV operational, 1-second test) |
| Continuous Barrier Working Voltage | 60 VDC / 42.5 VAC |
| Frecuencia de conmutación | 400 kHz |
| Power Density | 53 W/in3 (3.3 W/cm3) |
| Reliability | 125 FITS at 55 C |
| Protection Features | Thermal shutdown, output short-circuit protection |
| Synchronization | Device-to-device synchronization |
| Safety Recognition | UL1950 recognized component |
| Rango de temperatura de funcionamiento | -40 C to +85 C |
| Encapsulado | SOIC-12 (DVB), surface mount |
Guía de configuración de pines de DCR010505U/1K soic-12 (dvb), surface mount
Configuración de pines para DCR010505U/1K (encapsulado soic-12 (dvb), surface mount). Este dispositivo de potencia presenta terminales de puerta, drenador y fuente. Para encapsulados no polarizados, consulte la hoja de datos del fabricante para conocer la orientación exacta del pin 1 y los detalles del footprint. Las aplicaciones habituales incluyen el diseño de fuentes de alimentación, el accionamiento de motores y la conmutación de cargas.
No hay datos detallados de patillaje disponibles para DCR010505U/1K.
Consulte la hoja de datos para ver la configuración completa de patillas.
Aplicaciones típicas
DCR010505U/1K es adecuado para 6 aplicacións: Isolated RS-485 / RS-232 Communication Supplies, Isolated Gate-Drive Bias Rails, Industrial Data Acquisition and Sensor Isolation, Medical and Laboratory Instrument Front Ends, Ground-Loop Breaking in Test and Measurement, 5V-Rail Industrial Embedded Systems.
Isolated RS-485 / RS-232 Communication Supplies
The DCR010505U/1K is a natural fit for powering the isolated side of industrial RS-485 and RS-232 transceivers. Its regulated 5V, 200mA isolated output covers the supply requirement of typical transceiver ICs such as the TI SN65HVD series, while the 1000Vrms isolation barrier breaks the ground loop between remote field nodes and the controller. Very low output noise, a stated feature of the DCR01 family, helps keep receiver threshold margins clean in electrically noisy factory environments. Placed directly adjacent to the transceiver VCC pin with local 10uF and 0.1uF decoupling, the module replaces a discrete flyback converter and its transformer. Device-to-device synchronization prevents beat-frequency interference when multiple isolated channels share one PCB.
Recomendado
Isolated Gate-Drive Bias Rails
In motor drives and power converters, low-side and high-side gate drivers each need a clean, isolated bias rail. The DCR010505U/1K supplies a regulated 5V at 200mA across a 1000Vrms barrier, adequate for a single isolated channel of gate-drive logic or an isolated driver front end on the 60 VDC working-voltage barrier. Its 400 kHz switching and internal synchronous regulation deliver stable bias despite bursts of gate-charge load, and integrated short-circuit protection guards against shoot-through faults on the isolated side. Using one module per channel simplifies layout versus a multi-winding bias transformer. Note the working-voltage limit: this module serves functional isolation at up to 60 VDC continuous, not reinforced mains isolation.
Recomendado
Industrial Data Acquisition and Sensor Isolation
Analog front ends in PLC analog-input cards and remote I/O benefit from the DCR010505U/1K's isolated, low-noise 5V rail. According to the TI DCR01 family description, the modules combine galvanic isolation with very low output noise and high output accuracy - exactly the combination needed to power isolated ADCs, amplifiers, and 4-20mA transmitter front ends without injecting switching noise into microvolt-level signals. The 200mA output powers a complete isolated front-end channel, and the -40C to +85C operating range covers industrial cabinets. Because the module is regulated, the isolated rail stays accurate as the primary rail varies +/-10%, eliminating post-regulation and reducing BOM count in high-channel-density designs.
Recomendado
Medical and Laboratory Instrument Front Ends
Patient-connected and precision laboratory instruments require ground isolation to break leakage-current paths and reject common-mode interference. The DCR010505U/1K's 1000Vrms isolation and UL1950 component recognition provide a compact, pre-certified building block for functional isolation stages in monitoring front ends and bench instrumentation. The 125 FITS reliability figure at 55C supports long-life instrument designs, and the molded 12-pin SOIC keeps the isolated supply smaller than a discrete transformer solution. Its very low output noise, a highlighted DCR01 family feature, preserves signal integrity for biosignal amplifiers. Designers must add any reinforced-isolation barriers required by the applicable medical safety standard at the system level.
Recomendado
Ground-Loop Breaking in Test and Measurement
Test equipment, data loggers, and distributed measurement nodes frequently suffer measurement errors from ground potential differences between the acquisition system and the field. Inserting a DCR010505U/1K between the measurement-side supply and the isolated circuitry eliminates the galvanic connection that causes these loops, while its regulated 5V/200mA output runs the isolated electronics directly. The 400 kHz switching frequency keeps the converter's fundamental well above sensitive measurement bands, and synchronization pins allow several modules to lock to a common clock, preventing low-frequency beat products from appearing as measurement artifacts. The compact SOIC-12 (DVB) package fits directly on measurement daughterboards without a custom magnetics design.
Recomendado
5V-Rail Industrial Embedded Systems
Embedded controllers, isolated status inputs, and communication mezzanines designed around a 5V industrial backplane can use the DCR010505U/1K without any primary-side regulation, since the module accepts the full 4.5V-5.5V (+/-10%) input range directly. The 1W isolated output powers an isolated microcontroller section, relay-driver logic, or an isolated sensor node, and integrated thermal and short-circuit protection suits unattended industrial operation. The surface-mount SOIC-12 (DVB) package supports standard reflow assembly and a 1000-piece reel format for automated production. For designs migrating to 12V or 24V backplanes, footprint-compatible DCR011 and DCR012 family members allow the same PCB land pattern to be retained.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para DCR010505U/1K — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | DCR010503U | DCR011505U | DCR011503U |
|---|---|---|---|---|
| Package | SOIC-12 (DVB) | SOIC-12 (DVB) - same | SOIC-12 (DVB) - same | SOIC-12 (DVB) - same |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Output Voltage | 5 V | 3.3 V | 5 V | 3.3 V |
| Output Power | 1 W | 1 W | 1 W | 1 W |
| Isolation | 1000 Vrms | 1000 Vrms | 1000 Vrms | 1000 Vrms |
| Switching Frequency | 400 kHz | 400 kHz | 400 kHz | 400 kHz |
| Safety Recognition | UL1950 recognized | UL1950 recognized | UL1950 recognized | UL1950 recognized |
Diferenciadores clave
- 5V-input family member - no primary pre-regulation needed (frente a DCR011505U)
- 5V output for 5V-native isolated loads (frente a DCR010503U)
- UL1950 recognition with defined continuous barrier rating (frente a DCR010503U (same feature set))
Notas de diseño
Place a low-ESR ceramic capacitor (datasheet-recommended value, typically 10uF class) close to the primary-side input pins and local decoupling on the isolated 5V output pin. The 400 kHz switching edges require short, wide traces for the input loop to minimize conducted EMI. Keep the isolation creepage region clear: do not route primary-side traces under the isolated section of the SOIC-12 (DVB) body, and maintain the datasheet's recommended spacing across the barrier on all PCB layers to preserve the 1000Vrms isolation rating.
At the full 1W output load, module internal losses raise the SOIC-12 package temperature; the family is rated -40C to +85C ambient with a thermal-protection trip as a backstop. Estimated: at 85% efficiency (assumed - verify against the datasheet efficiency curve), a 1W load dissipates roughly 0.18W in the module, a modest but non-zero rise in a sealed enclosure. For loads above about 80% of 200mA at elevated ambient, verify the derating curve in the manufacturer datasheet and provide copper area or airflow as indicated.
Three common mistakes with the DCR01 family: (1) applying more than 5.5V input - the DCR010 series is strictly a 5V-input part; use DCR011/DCR012 for 12V/24V rails. (2) Treating the 1000Vrms functional isolation as reinforced mains isolation - the continuous barrier working voltage is only 60 VDC / 42.5 VAC per the datasheet. (3) Ignoring synchronization: when multiple modules run on one board, leave SYNC floating per datasheet guidance or tie them together, since asynchronous modules can generate audible/beat-frequency artifacts.
Información de cumplimiento
UL1950 recognized component per TI DCR01 datasheet. RoHS/REACH status not stated in provided data - confirm on the TI product page before ordering.
