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TPS3306-Q1

現行

具有電源故障功能的汽車雙處理器監控器

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產品規格表

TPS3306-Q1

現行
產品規格表 立即訂購

產品詳細資料

Rating Automotive Number of supplies monitored 3 Threshold voltage 1 (typ) (V) 1.4, 1.68, 1.85, 2.25, 2.93, 4.55 Features PFI/PFO, Timeout watchdog, Undervoltage monitor only, Watchdog timer Reset threshold accuracy (%) 4 Iq (typ) (mA) 0.015 Output driver type/reset output Active-low, Open-drain Time delay (ms) 100 Watchdog timer WDI (s) 0.8 Supply voltage (min) (V) 2.7 Supply voltage (max) (V) 6 Operating temperature range (°C) -40 to 125
Rating Automotive Number of supplies monitored 3 Threshold voltage 1 (typ) (V) 1.4, 1.68, 1.85, 2.25, 2.93, 4.55 Features PFI/PFO, Timeout watchdog, Undervoltage monitor only, Watchdog timer Reset threshold accuracy (%) 4 Iq (typ) (mA) 0.015 Output driver type/reset output Active-low, Open-drain Time delay (ms) 100 Watchdog timer WDI (s) 0.8 Supply voltage (min) (V) 2.7 Supply voltage (max) (V) 6 Operating temperature range (°C) -40 to 125
SOIC (D) 8 29.4 mm² 4.9 x 6
  • Qualified for Automotive Applications
  • Dual Supervisory Circuits With Power-Fail for DSP and Processor-Based Systems
  • Voltage Monitor for Power-Fail or Low-Battery Warning
  • Watchdog Timer With 0.8-s Time-Out
  • Power-On Reset Generator With Integrated 100-ms Delay Time
  • Open-Drain Reset and Power-Fail Output
  • Supply Current of 15 µA (Typ)
  • Supply Voltage Range . . . 2.7 V to 6 V
  • Defined RESET Output From VDD ≥ 1.1 V
  • SO-8 Package
  • Temperature Range . . . –40°C to 125°C
  • Applications Include
    • Multivoltage DSPs and Processors
    • Portable Battery-Powered Equipment
    • Embedded Control Systems
    • Intelligent Instruments
    • Automotive Systems
  • Qualified for Automotive Applications
  • Dual Supervisory Circuits With Power-Fail for DSP and Processor-Based Systems
  • Voltage Monitor for Power-Fail or Low-Battery Warning
  • Watchdog Timer With 0.8-s Time-Out
  • Power-On Reset Generator With Integrated 100-ms Delay Time
  • Open-Drain Reset and Power-Fail Output
  • Supply Current of 15 µA (Typ)
  • Supply Voltage Range . . . 2.7 V to 6 V
  • Defined RESET Output From VDD ≥ 1.1 V
  • SO-8 Package
  • Temperature Range . . . –40°C to 125°C
  • Applications Include
    • Multivoltage DSPs and Processors
    • Portable Battery-Powered Equipment
    • Embedded Control Systems
    • Intelligent Instruments
    • Automotive Systems

The TPS3306 family is a series of supervisory circuits designed for circuit initialization which require two supply voltages, primarily in DSP and processor-based systems.

The product spectrum of the TPS3306-xx is designed for monitoring two independent supply voltages of 3.3 V/1.5 V, 3.3 V/1.8 V, 3.3 V/2 V, 3.3 V/2.5 V, or 3.3 V/5 V.

The various supervisory circuits are designed to monitor the nominal supply voltage, as shown in the following supply-voltage monitoring table.

During power-on, RESET is asserted when the supply voltage VDD becomes higher than 1.1 V. Thereafter, the supervisory circuits monitor the SENSEn inputs and keep RESET active as long as SENSEn remains below the threshold voltage VIT.

An internal timer delays the return of the RESET output to the inactive state (high) to ensure proper system reset. The delay time, td(typ) = 100 ms, starts after SENSE1 and SENSE2 inputs have risen above the threshold voltage VIT. When the voltage at SENSE1 or SENSE2 input drops below the threshold voltage VIT, the output becomes active (low) again.

The integrated power-fail (PFI) comparator with separate open-drain (PFO) output can be used for low-battery detection, power-fail warning, or for monitoring a power supply other than the main supply.

The TPS3306-xx devices integrate a watchdog timer that is periodically triggered by a positive or negative transition of WDI. When the supervising system fails to retrigger the watchdog circuit within the time-out interval, tt(out) = 0.50 s, RESET becomes active for the time period td. This event also reinitializes the watchdog timer. Leaving WDI unconnected disables the watchdog.

The TPS3306-xx devices are available in standard 8-pin SO packages.

The TPS3306-xxQ family is characterized for operation over a temperature range of –40°C to 125°C.

The TPS3306 family is a series of supervisory circuits designed for circuit initialization which require two supply voltages, primarily in DSP and processor-based systems.

The product spectrum of the TPS3306-xx is designed for monitoring two independent supply voltages of 3.3 V/1.5 V, 3.3 V/1.8 V, 3.3 V/2 V, 3.3 V/2.5 V, or 3.3 V/5 V.

The various supervisory circuits are designed to monitor the nominal supply voltage, as shown in the following supply-voltage monitoring table.

During power-on, RESET is asserted when the supply voltage VDD becomes higher than 1.1 V. Thereafter, the supervisory circuits monitor the SENSEn inputs and keep RESET active as long as SENSEn remains below the threshold voltage VIT.

An internal timer delays the return of the RESET output to the inactive state (high) to ensure proper system reset. The delay time, td(typ) = 100 ms, starts after SENSE1 and SENSE2 inputs have risen above the threshold voltage VIT. When the voltage at SENSE1 or SENSE2 input drops below the threshold voltage VIT, the output becomes active (low) again.

The integrated power-fail (PFI) comparator with separate open-drain (PFO) output can be used for low-battery detection, power-fail warning, or for monitoring a power supply other than the main supply.

The TPS3306-xx devices integrate a watchdog timer that is periodically triggered by a positive or negative transition of WDI. When the supervising system fails to retrigger the watchdog circuit within the time-out interval, tt(out) = 0.50 s, RESET becomes active for the time period td. This event also reinitializes the watchdog timer. Leaving WDI unconnected disables the watchdog.

The TPS3306-xx devices are available in standard 8-pin SO packages.

The TPS3306-xxQ family is characterized for operation over a temperature range of –40°C to 125°C.
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* Data sheet Dual Processor Supervisory Circuits With Power-Fail datasheet (Rev. B) 2008年 4月 30日
E-book Voltage Supervisor and Reset ICs: Tips, Tricks and Basics 2019年 6月 28日

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TIDA-01168 — 適用於 12-V/48-V 車用系統的雙向 DC/DC 轉換器參考設計

TIDA-01168 參考設計為一適用 12V/48V 汽車系統的四相雙向 DC-DC 轉換器開發平台。系統使用兩個 LM5170-Q1 電流控制器和一個 TMS320F28027F 微控制器 (MCU) 進行功率級控制。LM5170-Q1 子系統使用平均電流回饋進行電流控制，而 C2000™ 微控制器則提供電壓回饋。  這種控制方案可消除多相轉換器常見的相位電流平衡。以 LM5170-Q1 為基礎的系統可實現高度整合，可縮減印刷電路板 (PCB) 面積，簡化設計並加速開發。
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