DCR010505U/1K - 1W Isolated DC/DC Converter 5V 200mA | TI
料号： DCR010505U/1K ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $0 | $0.00 |
| 10 | $0 | $0.00 |
| 100 | $0 | $0.00 |
| 500 | $0 | $0.00 |
| 1,000 | $0 | $0.00 |
DCR010505U/1K 概述
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.
直接替换替代料： DCR010505U/1K ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
快速对比工具——选择替代料号进行并排对比：
DCR010503U
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
DCR011505U
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
DCR011503U
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
DCR010505U/1K 最大额定值与电气特性
| 拓扑 | Isolated, regulated DC/DC converter module |
| 输出数量 | 1 |
| 输出电压 | 5 V |
| Output Current | 200 mA |
| Output Power | 1 W |
| 输入电压范围 | 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 |
| 开关频率 | 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 |
| 工作温度范围 | -40 C to +85 C |
| 封装 | SOIC-12 (DVB), surface mount |
DCR010505U/1K soic-12 (dvb), surface mount 引脚配置指南
DCR010505U/1K（soic-12 (dvb), surface mount 封装）的引脚配置。 该功率器件具有栅极、漏极和源极端子。对于无极性封装，请参阅制造商数据手册以了解确切的引脚 1 方向和封装尺寸细节。常见应用包括电源设计、电机驱动和负载开关。
暂无详细引脚数据： DCR010505U/1K.
请参阅 数据手册 以查看完整引脚配置。
典型应用
DCR010505U/1K 适用于 6 应用s: 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.
推荐
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.
推荐
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.
推荐
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.
推荐
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.
推荐
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.
推荐
推荐产品汇总
工程参考数据： DCR010505U/1K ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | 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 |
关键差异点
- 5V-input family member - no primary pre-regulation needed （对比 DCR011505U)
- 5V output for 5V-native isolated loads （对比 DCR010503U)
- UL1950 recognition with defined continuous barrier rating （对比 DCR010503U (same feature set))
设计说明
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.
合规信息
UL1950 recognized component per TI DCR01 datasheet. RoHS/REACH status not stated in provided data - confirm on the TI product page before ordering.
