UC1825A-SP

アクティブ

耐放射線特性 QMLV、30V 入力、2A、デュアル出力、1MHz PWM コントローラ

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UC1825B-SP アクティブ 耐放射線特性 QMLV、30V 入力、2A、デュアル出力、1MHz PWM コントローラ Improved TID performance (100 krad) with increased max frequency (1 MHz) and dual outputs for half/full-bridge, or push-pull topologies.

製品詳細

Topology Boost, Flyback, Forward, Full-Bridge, Half-Bridge, Push-Pull Duty cycle (Max) (%) 50 Supply voltage (Max) (V) 30 UVLO thresholds on/off (V) 9.2/8.4 Features Error Amplifier, Leading Edge Blanking, Multi-topology, Soft Start, Synchronization Pin Operating temperature range (C) -55 to 125 Rating Space Frequency (Max) (kHz) 1000 Gate drive (Typ) (A) 2
Topology Boost, Flyback, Forward, Full-Bridge, Half-Bridge, Push-Pull Duty cycle (Max) (%) 50 Supply voltage (Max) (V) 30 UVLO thresholds on/off (V) 9.2/8.4 Features Error Amplifier, Leading Edge Blanking, Multi-topology, Soft Start, Synchronization Pin Operating temperature range (C) -55 to 125 Rating Space Frequency (Max) (kHz) 1000 Gate drive (Typ) (A) 2
CDIP (J) 16 135 mm² 19.65 x 6.92 CFP (HSL) (HKT) 16 72 mm² 10.16 x 7.1 LCCC (FK) 20 79 mm² 8.89 x 8.89
  • 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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種類 タイトル 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年 12月 9日
* SMD UC1825A-SP SMD 5962-87681 2016年 7月 8日
* 放射線と信頼性レポート UC1825A-SP Radiation Test Report 2015年 5月 8日
セレクション・ガイド TI Space Products (Rev. I) 2022年 3月 3日
アプリケーション・ノート TPS3704Q1EVM Window/Standard Voltage Supervisor User's Guide PDF | HTML 2020年 12月 14日
アプリケーション・ノート TPS7H3301-SP DLA Standard Microcircuit Drawings (SMD) and JAN Part Numbers FAQ 2020年 8月 21日
アプリケーション・ノート Hermetic Package Reflow Profiles, Termination Finishes, and Lead Trim & Form PDF | HTML 2020年 5月 18日
アプリケーション・ノート Heavy Ion Orbital Environment Single-Event Effects Estimations 2020年 5月 18日
アプリケーション・ノート Single-Event Effects Confidence Interval Calculations 2020年 1月 14日
その他の技術資料 TI Engineering Evaluation Units vs. MIL-PRF-38535 QML Class V Processing 2019年 6月 17日
e-Book(PDF) Radiation Handbook for Electronics (Rev. A) 2019年 5月 21日
アプリケーション・ノート UC1825A-SP TID Report 2016年 12月 12日

設計および開発

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パッケージ ピン数 ダウンロード
CDIP (J) 16 オプションの表示
CFP (HKT) 16 オプションの表示
LCCC (FK) 20 オプションの表示

購入と品質

記載されている情報:
  • RoHS
  • REACH
  • デバイスのマーキング
  • リード端子の仕上げ / ボールの原材料
  • MSL rating / リフローピーク温度
  • MTBF/FIT 推定値
  • 原材料組成
  • 認定試験結果
  • 継続的な信頼性モニタ試験結果

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