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UC1825-SP

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耐辐射 QMLV、30V 输入、1.5A 双路输出 1MHz PWM 控制器

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UC1825B-SP 正在供货 耐辐射 QMLV、30V 输入、2A 双输出 1MHz PWM 控制器 Improved TID performance (100 krad) with increased max frequency (1 MHz) and dual outputs for half/full-bridge, or push-pull topologies.

UC1825-SP

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产品详情

Vin (max) (V) 20 Operating temperature range (°C) -55 to 125 Control mode Current Topology Boost, Flyback, Forward, Full bridge, Half bridge, Push pull Rating Space Features Error amplifier, Multi-topology, Soft start, Synchronization pin Duty cycle (max) (%) 80
Vin (max) (V) 20 Operating temperature range (°C) -55 to 125 Control mode Current Topology Boost, Flyback, Forward, Full bridge, Half bridge, Push pull Rating Space Features Error amplifier, Multi-topology, Soft start, Synchronization pin Duty cycle (max) (%) 80
CDIP (J) 16 135.3552 mm² 19.56 x 6.92 LCCC (FK) 20 79.0321 mm² 8.89 x 8.89
  • QML-V Qualified, SMD 5962-87681
  • Rad-Tolerant: 30 kRad (Si) TID(1)
  • Compatible With Voltage- or Current-Mode Topologies
  • Practical Operation Switching Frequencies to 1 MHz
  • 50-ns Propagation Delay-to-Output
  • High-Current Dual Totem Pole Outputs (1.5 A Peak)
  • Wide Bandwidth Error Amplifier
  • Fully Latched Logic With Double-Pulse Suppression
  • Pulse-by-Pulse Current Limiting
  • Soft Start/Maximum Duty-Cycle Control
  • Undervoltage Lockout With Hysteresis
  • Low Start-Up Current (1.1 mA)

(1) Radiation tolerance is a typical value based upon initial device qualification with dose rate = 10 mrad/sec. Radiation Lot Acceptance Testing is available - contact factory for details.
  • QML-V Qualified, SMD 5962-87681
  • Rad-Tolerant: 30 kRad (Si) TID(1)
  • Compatible With Voltage- or Current-Mode Topologies
  • Practical Operation Switching Frequencies to 1 MHz
  • 50-ns Propagation Delay-to-Output
  • High-Current Dual Totem Pole Outputs (1.5 A Peak)
  • Wide Bandwidth Error Amplifier
  • Fully Latched Logic With Double-Pulse Suppression
  • Pulse-by-Pulse Current Limiting
  • Soft Start/Maximum Duty-Cycle Control
  • Undervoltage Lockout With Hysteresis
  • Low Start-Up Current (1.1 mA)

(1) Radiation tolerance is a typical value based upon initial device qualification with dose rate = 10 mrad/sec. Radiation Lot Acceptance Testing is available - contact factory for details.

The UC1825 PWM control device is optimized for high-frequency switched mode power supply applications. Particular care was given to minimizing propagation delays through the comparators and logic circuitry while maximizing bandwidth and slew rate of the error amplifier. This controller is designed for use in either current-mode or voltage mode systems with the capability for input voltage feed-forward.

Protection circuitry includes a current limit comparator with a 1-V threshold, a TTL compatible shutdown port, and a soft start pin which will double as a maximum duty-cycle clamp. The logic is fully latched to provide jitter-free operation and prohibit multiple pulses at an output. An undervoltage lockout section with 800 mV of hysteresis assures low start up current. During undervoltage lockout, the outputs are high impedance.

This device features totem pole outputs designed to source and sink high peak currents from capacitive loads, such as the gate of a power MOSFET. The on state is designed as a high level.

The UC1825 PWM control device is optimized for high-frequency switched mode power supply applications. Particular care was given to minimizing propagation delays through the comparators and logic circuitry while maximizing bandwidth and slew rate of the error amplifier. This controller is designed for use in either current-mode or voltage mode systems with the capability for input voltage feed-forward.

Protection circuitry includes a current limit comparator with a 1-V threshold, a TTL compatible shutdown port, and a soft start pin which will double as a maximum duty-cycle clamp. The logic is fully latched to provide jitter-free operation and prohibit multiple pulses at an output. An undervoltage lockout section with 800 mV of hysteresis assures low start up current. During undervoltage lockout, the outputs are high impedance.

This device features totem pole outputs designed to source and sink high peak currents from capacitive loads, such as the gate of a power MOSFET. The on state is designed as a high level.
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技术文档

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类型 标题 下载最新的英语版本 日期
* 数据表 High-Speed PWM Controller. 数据表 (Rev. A) 2012年 3月 22日
* SMD UC1825-SP SMD 5962-87681 2016年 7月 8日
* 辐射与可靠性报告 UC1825-SP Radiation Test Report (5962-8768104VEA) 2015年 5月 8日
选择指南 TI Space Products (Rev. J) 2024年 2月 12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
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设计和开发

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仿真模型

UC1825 TINA-TI Transient Reference Design

SLUM653.TSC (5219 KB) - TINA-TI Reference Design
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仿真模型

UC1825 Unencrypted TINA-TI Transient Spice Model

SLUM673.ZIP (6 KB) - TINA-TI Spice Model
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测试报告: PDF
参考设计

PMP23033 — 具有磁反馈的 40W 5V 单开关正向转换器参考设计

此参考设计在 40W 下从 60V 至 120V 直流输入电压生成隔离式 5V 电压。该设计使用磁反馈电路来替代光耦合器的功能。
测试报告: PDF
封装 引脚 CAD 符号、封装和 3D 模型
CDIP (J) 16 Ultra Librarian
LCCC (FK) 20 Ultra Librarian
应遵守 TI 评估类商品的标准条款与条件。

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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