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UC1825A-SP

アクティブ

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

ご注文はこちら
データシート

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UC1825B-SP アクティブ Radiation-hardened, QML-V, 30V input, 2A dual-output 1MHz PWM controller Improved TID performance (100 krad) with increased max frequency (1 MHz) and dual outputs for half/full-bridge, or push-pull topologies.

UC1825A-SP

アクティブ
データシート ご注文はこちら

製品詳細

Topology Boost, Flyback, Forward, Full bridge, Half bridge, Push pull Control mode Current Features Error amplifier, Leading edge blanking, Multi-topology, Soft start, Synchronization pin Duty cycle (max) (%) 50
Topology Boost, Flyback, Forward, Full bridge, Half bridge, Push pull Control mode Current Features Error amplifier, Leading edge blanking, Multi-topology, Soft start, Synchronization pin Duty cycle (max) (%) 50
LCCC (FK) 20 79.0321 mm² (— mm × — mm) CFP (HKT) 16 72.136 mm² (0 mm × 0 mm) CDIP (J) 16 135.3552 mm² (— mm × — mm)
  • QML-V Qualified, SMD 5962-87681
  • 5962P8768105Vxx:
    • Radiation Hardness Assurance (RHA) up to 30-krad(Si) Total Ionizing Dose (TID)
    • Passes Functional and Specified Post-Radiation Parametric Limits at 45 krad at LDR (10 mrad(Si)/s) per 1.5× Over Test as Defined in MIL-STD-883 Test Method 1019.9 Paragraph 3.13.3.b
    • Exhibits Low Dose Rate Sensitivity but Remains Within the Pre-Radiation Electrical Limits at 30-krad Total Dose Level, as Allowed by MIL-STD-883, TM1019
  • Compatible With Voltage-Mode or Current-Mode Control Methods
  • Practical Operation at Switching Frequencies to 1 MHz
  • 50-ns Propagation Delay to Output
  • High-Current Dual Totem Pole Outputs (2-A Peak)
  • Trimmed Oscillator Discharge Current
  • Low 100-µA Start-Up Current
  • Pulse-by-Pulse Current Limiting Comparator
  • Latched Overcurrent Comparator With Full Cycle Restart
  • Qualified Over the Military Temperature Range (–55°C to 125°C)
  • QML-V Qualified, SMD 5962-87681
  • 5962P8768105Vxx:
    • Radiation Hardness Assurance (RHA) up to 30-krad(Si) Total Ionizing Dose (TID)
    • Passes Functional and Specified Post-Radiation Parametric Limits at 45 krad at LDR (10 mrad(Si)/s) per 1.5× Over Test as Defined in MIL-STD-883 Test Method 1019.9 Paragraph 3.13.3.b
    • Exhibits Low Dose Rate Sensitivity but Remains Within the Pre-Radiation Electrical Limits at 30-krad Total Dose Level, as Allowed by MIL-STD-883, TM1019
  • Compatible With Voltage-Mode or Current-Mode Control Methods
  • Practical Operation at Switching Frequencies to 1 MHz
  • 50-ns Propagation Delay to Output
  • High-Current Dual Totem Pole Outputs (2-A Peak)
  • Trimmed Oscillator Discharge Current
  • Low 100-µA Start-Up Current
  • Pulse-by-Pulse Current Limiting Comparator
  • Latched Overcurrent Comparator With Full Cycle Restart
  • Qualified Over the Military Temperature Range (–55°C to 125°C)

The UC1825A-SP PWM controller is a radiation hardened version of the standard UC1825 family. Performance enhancements have been made to several of the circuit blocks. Error amplifier gain bandwidth product is 12 MHz, while input offset voltage is 2 mV. Current limit threshold is assured to a tolerance of 5%. Oscillator discharge current is specified at 10 mA for accurate dead time control. Frequency accuracy is improved to 6%. Start-up supply current, typically 100 µA, is ideal for offline applications. The output drivers are redesigned to actively sink current during UVLO at no expense to the start-up current specification. In addition each output is capable of 2-A peak currents during transitions.

Functional improvements have also been implemented in this device family. The UC1825 shutdown comparator is now a high-speed overcurrent comparator with a threshold of 1.2 V. The overcurrent comparator sets a latch that ensures full discharge of the soft-start capacitor before allowing a restart. While the fault latch is set, the outputs are in the low state. In the event of continuous faults, the soft-start capacitor is fully charged before discharge to insure that the fault frequency does not exceed the designed soft start period. The UC1825 CLOCK pin has become CLK/LEB. This pin combines the functions of clock output and leading edge blanking adjustment and has been buffered for easier interfacing.

The UC1825A-SP has dual alternating outputs and the same pin configuration of the UC1825. The UC1825A-SP version parts have UVLO thresholds identical to the original UC1825.

The UC1825A-SP PWM controller is a radiation hardened version of the standard UC1825 family. Performance enhancements have been made to several of the circuit blocks. Error amplifier gain bandwidth product is 12 MHz, while input offset voltage is 2 mV. Current limit threshold is assured to a tolerance of 5%. Oscillator discharge current is specified at 10 mA for accurate dead time control. Frequency accuracy is improved to 6%. Start-up supply current, typically 100 µA, is ideal for offline applications. The output drivers are redesigned to actively sink current during UVLO at no expense to the start-up current specification. In addition each output is capable of 2-A peak currents during transitions.

Functional improvements have also been implemented in this device family. The UC1825 shutdown comparator is now a high-speed overcurrent comparator with a threshold of 1.2 V. The overcurrent comparator sets a latch that ensures full discharge of the soft-start capacitor before allowing a restart. While the fault latch is set, the outputs are in the low state. In the event of continuous faults, the soft-start capacitor is fully charged before discharge to insure that the fault frequency does not exceed the designed soft start period. The UC1825 CLOCK pin has become CLK/LEB. This pin combines the functions of clock output and leading edge blanking adjustment and has been buffered for easier interfacing.

The UC1825A-SP has dual alternating outputs and the same pin configuration of the UC1825. The UC1825A-SP version parts have UVLO thresholds identical to the original UC1825.
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技術資料

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上位の文書 タイプ タイトル フォーマットオプション 最新の英語版をダウンロード 日付
* データシート UC1825A-SP Class-V, Radiation Hardened High-Speed PWM Controller データシート (Rev. C) PDF | HTML 2016/12/09
* 放射線と信頼性レポート UC1825A-SP Radiation Test Report (5962-8768105VEA) 2015/05/08
* SMD UC1825A-SP SMD 5962-87681 2016/07/08
セレクション・ガイド TI Space Products (Rev. L) 2026/03/27
アプリケーション・ノート 気密パッケージ リフロー プロファイル、終端仕上げ、およびリード ト リムとフォーム (Rev. A 翻訳版) PDF | HTML 英語版 (Rev.A) PDF | HTML 2025/11/20
アプリケーション概要 QML 製品に対する DLA 承認済みの最適化内容 (Rev. C 翻訳版) PDF | HTML 英語版 (Rev.C) PDF | HTML 2025/08/18
アプリケーション・ノート 重イオン軌道環境単一事象効果の推定 (Rev. B 翻訳版) PDF | HTML 英語版 (Rev.B) PDF | HTML 2025/07/07
その他の技術資料 TI Engineering Evaluation Units vs. MIL-PRF-38535 QML Class V Processing (Rev. B) 2025/02/20
アプリケーション・ノート QML flow, its importance, and obtaining lot information (Rev. C) 2023/08/30
アプリケーション・ノート Single-Event Effects Confidence Interval Calculations (Rev. A) PDF | HTML 2022/10/19
アプリケーション概要 Controlling Input Power for Present and Next-Generation Power Controllers PDF | HTML 2020/12/14
アプリケーション・ノート DLA Standard Microcircuit Drawings (SMD) and JAN Part Numbers Primer 2020/08/21
e-Book（PDF） Radiation Handbook for Electronics (Rev. A) 2019/05/21
アプリケーション・ノート UC1825A-SP TID Report 2016/12/12

設計と開発

その他のアイテムや必要なリソースを参照するには、以下のタイトルをクリックして詳細ページをご覧ください。

パッケージ ピン数 CAD シンボル、フットプリント、および 3D モデル
LCCC (FK) 20 Ultra Librarian
CFP (HKT) 16 Ultra Librarian
CDIP (J) 16 Ultra Librarian
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