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AC/DC 控制器

UC1825B-SP

現行

Radiation-hardened, QML-V, 30V input, 2A dual-output 1MHz PWM controller

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產品規格表

UC1825B-SP

現行
產品規格表 立即訂購

產品詳細資料

Topology Boost, Flyback, Forward, Full bridge, Half bridge, Push pull Control mode Peak current mode Features Adjustable switching frequency, Enable/Shutdown, Error amplifier, Integrated gate drivers, Programmable soft start, Soft start Duty cycle (max) (%) 80
Topology Boost, Flyback, Forward, Full bridge, Half bridge, Push pull Control mode Peak current mode Features Adjustable switching frequency, Enable/Shutdown, Error amplifier, Integrated gate drivers, Programmable soft start, Soft start Duty cycle (max) (%) 80
CFP (HKT) 16 72.136 mm² (0 mm × 0 mm) DIESALE (KGD) — See data sheet
  • QML-V qualified, SMD 5962-8768106
  • 5962R8768106VYC:
    • Radiation hardness assurance (RHA) up to 100-krad(Si) total ionizing dose (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 (2-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(Si)/s. Radiation Lot Acceptance Testing is available - contact factory for details.
  • QML-V qualified, SMD 5962-8768106
  • 5962R8768106VYC:
    • Radiation hardness assurance (RHA) up to 100-krad(Si) total ionizing dose (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 (2-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(Si)/s. Radiation Lot Acceptance Testing is available - contact factory for details.

The UC1825B-SP 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 UC1825B-SP 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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技術文件

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重要文件 類型 標題 格式選項 下載最新的英文版本 日期
* 資料表 UC1825B-SP Class-V, Radiation Hardened High-Speed PWM Controller datasheet (Rev. A) PDF | HTML 2020/12/16
* 輻射及可靠性報告 UC1825B-SP Total Ionizing Dose (TID) Radiation Report (Rev. A) PDF | HTML 2024/6/7
* 輻射及可靠性報告 SEE Test Report of the UC1825B-SP High Speed PWM Controller 2020/6/1
* 輻射及可靠性報告 UC1825B-SP Neutron Displacement Damage Characterization 2019/3/1
* SMD UC1825B-SP SMD 5962-87681 2020/5/19
選擇指南 TI Space Products (Rev. L) 2026/3/27
應用說明 Hermetic Package Reflow Profiles, Termination Finishes, and Lead Trim and Form (Rev. A) PDF | HTML 2025/11/5
Application brief DLA Approved Optimizations for QML Products (Rev. C) PDF | HTML 2025/6/17
應用說明 Heavy Ion Orbital Environment Single-Event Effects Estimations (Rev. B) PDF | HTML 2025/6/10
更多文件說明 TI Engineering Evaluation Units vs. MIL-PRF-38535 QML Class V Processing (Rev. B) 2025/2/20
應用說明 QML flow, its importance, and obtaining lot information (Rev. C) 2023/8/30
應用說明 Single-Event Effects Confidence Interval Calculations (Rev. A) PDF | HTML 2022/10/19
Application brief Controlling Input Power for Present and Next-Generation Power Controllers PDF | HTML 2020/12/14
應用說明 DLA Standard Microcircuit Drawings (SMD) and JAN Part Numbers Primer 2020/8/21
電子書 Radiation Handbook for Electronics (Rev. A) 2019/5/21
使用指南 UC1825B-SP evaluation module (EVM) user's guide 2019/3/29

設計與開發

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開發板

UC1825BEVM-CVAL — 5V/50 W 推挽評估模組

UC1825B-SP EVM 使用推拉式拓撲顯示 SP 製程的功能。控制器搭配 UC1901-SP 一起使用，即可滿足隔離與非隔離穩壓需求。此設計可使用輸出扼流器，允許極低的漣波，進而在輸出電壓上提供高精確度。
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模擬型號

UC1825 TINA-TI Transient Reference Design

SLUM653.TSC (5219 KB) - TINA-TI 參考設計
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模擬型號

UC1825 Unencrypted TINA-TI Transient Spice Model

SLUM673.ZIP (6 KB) - TINA-TI Spice 模型
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參考設計

PMP22680 — 具有磁回饋的 40-W、±15-V 返馳參考設計

此參考設計從 70-V 至 120-V DC 輸入電壓產生 40 W 的隔離 ±15 V。此設計使用磁回饋電路來取代光耦合器的功能。
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參考設計

PMP23033 — 具磁回饋的 40-W 5-V 單開關順向轉換器參考設計

本參考設計可產生從 60-V 至 120-V DC 輸入電壓的 40-W 的隔離 5-V 電壓。此設計使用磁回饋電路來取代光耦合器的功能。
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封裝 針腳 CAD 符號、佔位空間與 3D 模型
CFP (HKT) 16 Ultra Librarian
DIESALE (KGD) — Ultra Librarian
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