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UC1901-SP

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带有隔离式反馈发生器的航天级 QMLV

产品详情

UVLO thresholds on/off (V) 3.9/3.9 Switching frequency (max) (kHz) 5000 Features 1% reference, Isolated feedback generator, Synchronizable Operating temperature range (°C) -55 to 125 Vin (max) (V) 40 Device type Isolated feedback generator Rating Space
UVLO thresholds on/off (V) 3.9/3.9 Switching frequency (max) (kHz) 5000 Features 1% reference, Isolated feedback generator, Synchronizable Operating temperature range (°C) -55 to 125 Vin (max) (V) 40 Device type Isolated feedback generator Rating Space
CDIP (J) 14 130.4652 mm² 19.56 x 6.67
  • An Amplitude-Modulation System for Transformer Coupling an Isolated Feedback Error Signal
  • Low-Cost Alternative to Optical Couplers
  • Internal 1% Reference and Error Amplifier
  • Internal Carrier Oscillator Usable to 5MHz
  • Modulator Synchronizable to an External Clock
  • Loop Status Monitor
  • An Amplitude-Modulation System for Transformer Coupling an Isolated Feedback Error Signal
  • Low-Cost Alternative to Optical Couplers
  • Internal 1% Reference and Error Amplifier
  • Internal Carrier Oscillator Usable to 5MHz
  • Modulator Synchronizable to an External Clock
  • Loop Status Monitor

The UC1901 family is designed to solve many of the problems associated with closing a feedback control loop across a voltage isolation boundary. As a stable and reliable alternative to an optical coupler, these devices feature an amplitude modulation system which allows a loop error signal to be coupled with a small RF transformer or capacitor.

The programmable, high-frequency oscillator within the UC1901 series permits the use of smaller, less expensive transformers which can readily be built to meet the isolation requirements of today's line-operated power systems. As an alternative to RF operation, the external clock input to these devices allows synchronization to a system clock or to the switching frequency of a SMPS.

An additional feature is a status monitoring circuit which provides an active-low output when the sensed error voltage is within ±10% of the reference. The DRIVERA output, DRIVERB output, and STATUS output are disabled until the input supply has reached a sufficient level to allow proper operation of the device.

Since these devices can also be used as a DC driver for optical couplers, the benefits of 4.5 to 40V supply operation, a 1% accurate reference, and a high gain general purpose amplifier offer advantages even though an AC system may not be desired.

The UC1901 family is designed to solve many of the problems associated with closing a feedback control loop across a voltage isolation boundary. As a stable and reliable alternative to an optical coupler, these devices feature an amplitude modulation system which allows a loop error signal to be coupled with a small RF transformer or capacitor.

The programmable, high-frequency oscillator within the UC1901 series permits the use of smaller, less expensive transformers which can readily be built to meet the isolation requirements of today's line-operated power systems. As an alternative to RF operation, the external clock input to these devices allows synchronization to a system clock or to the switching frequency of a SMPS.

An additional feature is a status monitoring circuit which provides an active-low output when the sensed error voltage is within ±10% of the reference. The DRIVERA output, DRIVERB output, and STATUS output are disabled until the input supply has reached a sufficient level to allow proper operation of the device.

Since these devices can also be used as a DC driver for optical couplers, the benefits of 4.5 to 40V supply operation, a 1% accurate reference, and a high gain general purpose amplifier offer advantages even though an AC system may not be desired.

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类型 标题 下载最新的英语版本 日期
* 数据表 Isolated Feedback Generator 数据表 (Rev. A) 2010年 1月 13日
* SMD UC1901-SP SMD 5962-89441 2016年 7月 8日
更多文献资料 TI Engineering Evaluation Units vs. MIL-PRF-38535 QML Class V Processing (Rev. A) 2023年 8月 31日
应用手册 QML flow, its importance, and obtaining lot information (Rev. C) 2023年 8月 30日
应用手册 单粒子效应置信区间计算 (Rev. A) PDF | HTML 英语版 (Rev.A) PDF | HTML 2022年 12月 2日
应用手册 重离子轨道环境单粒子效应估算 (Rev. A) PDF | HTML 英语版 (Rev.A) PDF | HTML 2022年 11月 30日
电子书 电子产品辐射手册 (Rev. B) 2022年 5月 7日
选择指南 TI Space Products (Rev. I) 2022年 3月 3日
应用手册 DLA Standard Microcircuit Drawings (SMD) and JAN Part Numbers Primer 2020年 8月 21日
应用手册 Hermetic Package Reflow Profiles, Termination Finishes, and Lead Trim and Form PDF | HTML 2020年 5月 18日
电子书 电子产品辐射手册 (Rev. A) 2019年 5月 21日
应用手册 The UC1901 Simplifies the Problem of Isolated Feedback in Switching Regulators 1999年 9月 5日

设计和开发

如需其他信息或资源,请点击以下任一标题进入详情页面查看(如有)。

评估板

UC1843BEVM-CVAL — UC1843B-SP 电流模式 PWM 控制器评估模块

UC1843BEVM-CVAL 使用 UC1843A-SP、INA901-SP、LM139AQML-SP 和 UC1901-SP 创建具有电流检测和过流标志的隔离型反馈反激式转换器。UC1843A-SP 用于切换反激式转换器的低侧 MOSFET,并为输出端提供电压和电流。UC1901-SP 可检测输出电压并实现隔离式反馈闭环。INA901-SP 检测提供给 LM139AQML-SP 的输入电流以产生过流标志。
用户指南: PDF
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仿真模型

UCx901 Family PSpice Average Model

SLUM063.ZIP (88 KB) - PSpice Model
仿真模型

UCx901 Family PSpice Transient Model

SLUM066.ZIP (42 KB) - PSpice Model
仿真模型

UCx901 Family TINA-TI Average Reference Design

SLUM058.TSC (1026 KB) - TINA-TI Reference Design
仿真模型

UCx901 Family TINA-TI Average Spice Model

SLUM059.ZIP (7 KB) - TINA-TI Spice Model
仿真模型

UCx901 Family TINA-TI Transient Reference Design

SLUM064.TSC (828 KB) - TINA-TI Reference Design
仿真模型

UCx901 Family TINA-TI Transient Spice Model

SLUM065.ZIP (9 KB) - TINA-TI Spice Model
参考设计

TIDA-070002 — 具有过流限制功能空间的 50W 反激式参考设计

航天器总线电压范围为额定 28V 至 100V 以上不等,一般用于高功率商用通信卫星。本参考设计展示了航天级 50W 隔离型中间总线转换器的示例,并实现了过流保护 (OCP) 限制功能。本设计采用 INA901-SP 耐辐射型电流监控器、LM139AQML-SP 四路比较器和 UC1901-SP,以创建具有电流感应和过流标志的隔离型反馈反激式器件,即 UC1843A-SP 电流模式 PWM 控制器,用于切换反激式转换器的低侧 MOSFET,并向输出提供电压和电流,UC1901-SP 可感应输出电压并实现隔离式反馈闭环。INA901-SP 可感应提供给 LM139AQML-SP (...)
设计指南: PDF
原理图: PDF
封装 引脚 下载
CDIP (J) 14 查看选项

订购和质量

包含信息:
  • RoHS
  • REACH
  • 器件标识
  • 引脚镀层/焊球材料
  • MSL 等级/回流焊峰值温度
  • MTBF/时基故障估算
  • 材料成分
  • 鉴定摘要
  • 持续可靠性监测
包含信息:
  • 制造厂地点
  • 封装厂地点

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