DCR010505U/1KE4 - 1W Isolated DC/DC Module 5V 200mA | Texas Instruments
N.º da peça: DCR010505U/1KE4 ✓ Ativo| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $1 | $1,00 |
| 10 | $1 | $10,00 |
| 100 | $1 | $100,00 |
| 500 | $1 | $500,00 |
| 1.000 | $1 | $1.000,00 |
DCR010505U/1KE4 Visão geral
An isolated DC/DC converter is a power management module that transfers energy across a galvanic isolation barrier, breaking ground loops and protecting downstream circuitry from hazardous voltages. Within the power-conversion hierarchy - voltage regulator, then DC/DC converter, then isolated DC/DC module - the DCR01 family sits at the board-mount module level, integrating the transformer, switching stage, and regulation loop in one standard JEDEC outline suited to high-volume assembly.
Key features include 1000Vrms operational isolation (1-second test), a 400kHz switching frequency enabling a power density of 53 W/in3 (3.3 W/cm3), device-to-device synchronization for parallel or multi-channel designs, thermal protection, and short-circuit protection. The module is UL1950 recognized, and the isolation barrier is rated for 60 VDC / 42.5 VAC continuous working voltage.
Architecturally, the DCR01 series uses a high-frequency switching topology with an integrated isolation transformer and a regulation loop that holds the output within tight limits (approximately 4.9V to 5.1V per distributor parametric data), giving very low output noise compared with unregulated converter modules. The 125 FIT reliability figure supports long-life industrial designs.
Typical applications include isolated interface power for RS-485 and CAN transceivers, isolated analog front ends in industrial automation, and ground-loop elimination in test and measurement equipment.
A key design consideration: because this is a fixed 5V-input part, upstream rail tolerance must stay within the ±10% (4.5V to 5.5V) window; use the DCR012405 variant for 24V buses.
This page synthesizes distributor data, drop-in alternatives, and practical design notes beyond the manufacturer datasheet.
Alternativas drop-in para DCR010505U/1KE4 — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
DCR010505U
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
DCR010505U/1K
✅ Drop-In✓ Em estoque
Consulte o preço
Ver ficha técnica →DCR010505UE4
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
DCR012405U
✅ Drop-In ⚠️ Especificações não verificadas📋 Alternativa de referência (fora do catálogo)
DCR010503U
✅ Drop-In ⚠️ Especificações não verificadas📋 Alternativa de referência (fora do catálogo)
DCR010505U/1KE4 Classificações máximas e características elétricas
| Topologia | Isolated, Regulated DC/DC Converter Module |
| Número de saídas | 1 |
| Tensão de saída | 5 V |
| Output Current | 200 mA |
| Output Power | 1 W |
| Output Voltage Range (Min-Max) | 4.9 V to 5.1 V |
| Faixa de tensão de entrada | 4.5 V to 5.5 V (±10% of 5 V nominal) |
| Isolation Voltage | 1000 Vrms (operational, 1-second test) |
| Continuous Working Isolation Voltage | 60 VDC / 42.5 VAC |
| Frequência de comutação | 400 kHz |
| Power Density | 53 W/in3 (3.3 W/cm3) |
| Synchronization | Device-to-device synchronization |
| Protection Features | Thermal protection, short-circuit protection |
| Reliability | 125 FIT |
| Safety Recognition | UL1950 recognized |
| Encapsulamento | 12-pin SOP (surface mount) |
| Width | 7.5 mm |
| Tipo de montagem | Surface Mount |
Guia de Configuração de Pinos do DCR010505U/1KE4 12-pin sop (surface mount)
Configuração de pinos para DCR010505U/1KE4 (pacote 12-pin sop (surface mount)). Este dispositivo de potência possui terminais de gate, drain e source. Para pacotes não polarizados, consulte o datasheet do fabricante para a orientação exata do pino 1 e detalhes do footprint. Aplicações comuns incluem projeto de fontes de alimentação, acionamento de motores e comutação de cargas.
Nenhum dado detalhado de pinagem disponível para DCR010505U/1KE4.
Consulte a ficha técnica para a configuração completa dos pinos.
Aplicações típicas
DCR010505U/1KE4 é adequado para 6 aplicaçãos: Isolated RS-485 / CAN Field Bus Interface, Isolated Analog Front End for Industrial Automation, Ground Loop Elimination in Test and Measurement Equipment, Isolated Power for Microcontroller IoT Nodes, Medical Equipment Auxiliary Isolated Rail, Isolated Gate Drive and Communications Bias Supply.
Isolated RS-485 / CAN Field Bus Interface
Industrial field buses such as RS-485 and CAN frequently require an isolated supply for the bus-side transceiver so that ground potential differences between nodes do not inject current into the data lines. The DCR010505U/1KE4 fits this role directly: its isolated 5V, 200mA output powers the transceiver and a digital isolator with margin, while the 1000Vrms barrier (60 VDC continuous working voltage) provides robust functional isolation. The 400kHz switching frequency and low output noise keep conducted emissions low with simple 10uF/0.1uF ceramic filtering, and short-circuit protection tolerates field wiring faults on the bus connector. Device-to-device synchronization lets multi-channel nodes run several modules without beat-frequency interference.
Recomendado
Isolated Analog Front End for Industrial Automation
Precision analog front ends measuring 4-20mA loops, thermocouples, or strain gauges benefit from an isolated, low-noise supply rail so that ground noise from the controller side does not corrupt microvolt-level signals. The DCR010505U/1KE4 provides a regulated isolated 5V rail with very low output noise, a stated advantage of the DCR01 series per the TI datasheet, which preserves the noise floor of the ADC and front-end amplifier. Its 200mA capacity covers typical signal chains (ADC, amplifier, reference), and the 125 FIT reliability figure supports long service intervals in factory equipment. Thermal and short-circuit protection add robustness when sensor wiring is exposed on the factory floor.
Recomendado
Ground Loop Elimination in Test and Measurement Equipment
Bench instruments, data acquisition modules, and probe front ends often connect to equipment at different ground potentials; an isolated supply breaks the resulting ground loop. The DCR010505U/1KE4 generates a clean isolated 5V domain from the instrument's internal 5V logic rail, allowing sensitive measurement circuitry to float relative to chassis ground. The 1000Vrms tested isolation provides margin for typical bench overvoltage events, while UL1950 recognition simplifies product safety documentation. With 53 W/in3 power density in a 7.5 mm wide 12-pin SOP, the module fits on dense DAQ boards, and its low output noise avoids adding ripple to the measurement path.
Recomendado
Isolated Power for Microcontroller IoT Nodes
Industrial IoT nodes attached to powered machinery need isolation between the noisy machine-side supply and the node electronics. The DCR010505U/1KE4 accepts the controller's 5V rail and produces an isolated 5V output for the node's radio module, sensors, and MCU, breaking galvanic paths that would otherwise couple transients into the wireless section. The 200mA (1W) budget suits low-power radios and sensor suites, and the module's thermal protection tolerates dusty, high-ambient enclosures. Because the family also offers 12V and 24V input variants in the same footprint, platform designs can standardize the layout across different machine supply voltages with only a BOM change.
Recomendado
Medical Equipment Auxiliary Isolated Rail
Non-patient-connected auxiliary circuits in medical devices - displays, communications interfaces, and logging electronics - often require an isolated supply referenced to the safety barrier. The DCR010505U/1KE4's UL1950 recognition and 1000Vrms tested isolation support such auxiliary isolation functions, delivering a regulated 5V, 200mA rail for interface circuitry. Its low output noise is valuable near analog sensing circuits, and the short-circuit protection prevents a single auxiliary fault from propagating into the main power system. Designers should verify the applicable medical isolation standard requirements for their specific end equipment, since this module provides functional isolation rather than a patient-connect rated reinforced barrier.
Recomendado
Isolated Gate Drive and Communications Bias Supply
Power conversion systems such as motor drives and solar inverters need small isolated bias supplies for gate drivers and isolated communication links on the high-voltage side. The DCR010505U/1KE4 supplies a 5V isolated bias from the controller's 5V rail with 1000Vrms of tested isolation, adequate for many low-voltage drive sub-systems. The module's 400kHz fixed clock and synchronization pin allow multiple bias channels (high-side, low-side, communications) to run coherently, avoiding intermodulation noise. Its 1W capacity fits a gate-driver pair with modest switching frequency, and the short-circuit protection protects the bias rail if a driver output is damaged during development.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para DCR010505U/1KE4 — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | DCR010505U | DCR010505U/1K | DCR010505UE4 | DCR012405U | DCR010503U |
|---|---|---|---|---|---|---|
| Package | 12-pin SOP | 12-pin SOP - same | 12-pin SOP - same | 12-pin SOP - same | 12-pin SOP - same | 12-pin SOP - same |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Input Voltage | 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 | 21.6 V to 26.4 V (24 V nominal) | 4.5 V to 5.5 V |
| Output Voltage | 5 V | 5 V | 5 V | 5 V | 5 V | 3.3 V |
| Output Current | 200 mA | 200 mA | 200 mA | 200 mA | 200 mA | 200 mA |
| Isolation | 1000 Vrms | 1000 Vrms | 1000 Vrms | 1000 Vrms | 1000 Vrms | 1000 Vrms |
| Switching Frequency | 400 kHz | 400 kHz | 400 kHz | 400 kHz | 400 kHz | 400 kHz |
| Protection Features | Thermal + short-circuit | Thermal + short-circuit | Thermal + short-circuit | Thermal + short-circuit | Thermal + short-circuit | Thermal + short-circuit |
| Safety Recognition | UL1950 recognized | UL1950 recognized | UL1950 recognized | UL1950 recognized | UL1950 recognized | UL1950 recognized |
Principais diferenciais
- Regulated output with low noise in a fixed footprint (vs DCR010503U)
- 5V input compatibility for logic-rail-powered designs (vs DCR012405U)
- UL1950 recognition and 125 FIT reliability data (vs DCR010505UE4)
- Device-to-device synchronization (vs Generic unregulated 1W isolated modules)
Notas de projeto
The DCR010505U/1KE4 is a fixed-input module: the primary rail must remain within 4.5V to 5.5V (±10% of 5V nominal). Regulated 5V logic rails typically comply, but rail sag under load or diode-OR drops can push the input below regulation. Verify worst-case input at maximum load and hot ambient. For 12V or 24V buses, switch to the corresponding DCR01 family input variant rather than adding a pre-regulator, preserving footprint and qualification.
Place a 10uF ceramic capacitor close to the primary-side VIN/GND pins and a 10uF ceramic plus 0.1uF combination close to the isolated output pins, per the datasheet application recommendations. Because the module switches at 400kHz, keep the primary and secondary grounds referenced only through the isolation barrier - never route a copper trace across the barrier region under the package, as this degrades the effective isolation and couples switching noise between domains.
The 400kHz switching fundamental and its harmonics appear on both input and output ripple spectra. If multiple DCR01 modules are used on one board, tie their synchronization pins together per the datasheet so all modules switch coherently; this prevents beat-frequency products in the low-frequency band that are harder to filter. Keep the isolation barrier area clear and route sensitive analog lines on the secondary side away from the transformer region of the package.
A frequent mistake is treating the module as an unregulated converter and omitting output verification. The DCR01 family is regulated (output approximately 4.9V to 5.1V per distributor parametric data), but only within its rated 200mA load and input window - below minimum load some isolated modules show output rise; check the datasheet minimum-load guidance. Also, 1000Vrms is an operational/test rating with 60 VDC continuous working voltage; do not specify this module for barrier applications requiring higher continuous working voltages.
Informações de conformidade
UL1950 recognized per TI datasheet. RoHS/REACH/lead-free status not stated in the verified web data snapshot - confirm on the TI product page before release.
