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AC/DC & DC/DC controllers (external FET)

UCC2803-Q1

現行

具有 4.1V/3.6V UVLO 100% 工作週期的車用 12V VCC 單端 1MHz 電流模式 PWM 控制器

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產品規格表

UCC2803-Q1

現行
產品規格表 立即訂購

產品詳細資料

Vin (max) (V) 12 Operating temperature range (°C) -40 to 125 Control mode Current Topology Boost, Flyback, Forward Rating Automotive Duty cycle (max) (%) 100
Vin (max) (V) 12 Operating temperature range (°C) -40 to 125 Control mode Current Topology Boost, Flyback, Forward Rating Automotive Duty cycle (max) (%) 100
SOIC (D) 8 29.4 mm² 4.9 x 6
  • Qualified for automotive applications
  • AEC-Q100 qualified with the following results:
    • Device temperature grade 1: –40°C to 125°C TA
    • Device HBM classification level 2: ±2 kV
    • Device CDM classification level C5: >1000 V
  • 100-µA typical starting supply current
  • 500-µA typical operating supply current
  • Operation up to 1 MHz
  • Internal soft start
  • Internal fault soft start
  • Internal leading-edge blanking of the current sense signal
  • 1-A totem-pole output
  • 70-ns typical response from current-sense to gate drive output
  • 1.5% tolerance voltage reference
  • Same pinout as UC3842 and UC3842A
  • Qualified for automotive applications
  • AEC-Q100 qualified with the following results:
    • Device temperature grade 1: –40°C to 125°C TA
    • Device HBM classification level 2: ±2 kV
    • Device CDM classification level C5: >1000 V
  • 100-µA typical starting supply current
  • 500-µA typical operating supply current
  • Operation up to 1 MHz
  • Internal soft start
  • Internal fault soft start
  • Internal leading-edge blanking of the current sense signal
  • 1-A totem-pole output
  • 70-ns typical response from current-sense to gate drive output
  • 1.5% tolerance voltage reference
  • Same pinout as UC3842 and UC3842A

The UCC280x-Q1 family of high-speed, low-power integrated circuits contain all of the control and drive components required for off-line and DC-to-DC fixed frequency current-mode switching mode power supplies with minimal parts count.

These devices have the same pin configuration as the UCx84x family, and also offer the added features of internal full-cycle soft start and internal leading-edge blanking of the current-sense input.

The UCC280x-Q1 family offers a variety of package options, temperature range options, choice of maximum duty cycle, and choice of critical voltage levels. Lower reference parts such as the UCC2803-Q1 and UCC2805-Q1 fit best into battery-operated systems, while the higher reference and higher UVLO hysteresis of the UCC2802-Q1 and UCC2804-Q1 make these ideal choices for use in off-line power supplies.

The UCC280x-Q1 series is specified for operation from –40°C to 125°C.

The UCC280x-Q1 family of high-speed, low-power integrated circuits contain all of the control and drive components required for off-line and DC-to-DC fixed frequency current-mode switching mode power supplies with minimal parts count.

These devices have the same pin configuration as the UCx84x family, and also offer the added features of internal full-cycle soft start and internal leading-edge blanking of the current-sense input.

The UCC280x-Q1 family offers a variety of package options, temperature range options, choice of maximum duty cycle, and choice of critical voltage levels. Lower reference parts such as the UCC2803-Q1 and UCC2805-Q1 fit best into battery-operated systems, while the higher reference and higher UVLO hysteresis of the UCC2802-Q1 and UCC2804-Q1 make these ideal choices for use in off-line power supplies.

The UCC280x-Q1 series is specified for operation from –40°C to 125°C.
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類型 標題 日期
* Data sheet UCC280x-Q1 Low-Power BiCMOS Current-Mode PWM Controllers datasheet (Rev. D) PDF | HTML 2018年 5月 31日

設計與開發

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參考設計

PMP23061 — 適用於牽引逆變器應用的預先穩壓隔離驅動器偏壓電源參考設計

這款預先穩壓隔離式開迴路 LLC 變壓器驅動器轉換器參考設計，為牽引變流器應用提供四個 18-V 輸出，總功率高達 6 W。LLC 拓撲可讓變壓器擁有顯著的漏感，但初級-次級電容卻要小很多，因此可大幅減少通過偏壓變壓器的共模電流注入。升壓前置穩壓器的設計旨在爲支援 6-W 輸出上限的 LLC 轉換器提供 7.5 W。
使用指南: PDF
電路圖: PDF
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