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TPS65321A-Q1

正在供貨

采用寬輸入電壓范圍、280mA LDO 穩(wěn)壓器的汽車類 3.6V 至 36V 3.2A 降壓轉換器

產品詳情

Processor supplier Generic Processor name Generic Product type Microcontrollers Regulated outputs (#) 2 Step-down DC/DC converter 1 Step-up DC/DC converter 0 LDO 1 Vin (min) (V) 3.6 Vin (max) (V) 36 Vout (min) (V) 1.1 Vout (max) (V) 20 Iout (max) (A) 3.2 Configurability Hardware configurable Features Eco-mode, Enable, Overcurrent protection, Power good, Thermal shutdown, UVLO fixed Rating Automotive Operating temperature range (°C) -40 to 125 Step-down DC/DC controller 0 Step-up DC/DC controller 0 Iq (typ) (mA) 0.145 Switching frequency (max) (kHz) 2500 Shutdown current (ISD) (typ) (μA) 2
Processor supplier Generic Processor name Generic Product type Microcontrollers Regulated outputs (#) 2 Step-down DC/DC converter 1 Step-up DC/DC converter 0 LDO 1 Vin (min) (V) 3.6 Vin (max) (V) 36 Vout (min) (V) 1.1 Vout (max) (V) 20 Iout (max) (A) 3.2 Configurability Hardware configurable Features Eco-mode, Enable, Overcurrent protection, Power good, Thermal shutdown, UVLO fixed Rating Automotive Operating temperature range (°C) -40 to 125 Step-down DC/DC controller 0 Step-up DC/DC controller 0 Iq (typ) (mA) 0.145 Switching frequency (max) (kHz) 2500 Shutdown current (ISD) (typ) (μA) 2
HTSSOP (PWP) 14 32 mm2 5 x 6.4
  • Qualified for Automotive Applications
  • AEC-Q100 Qualified with the Following Results:
    • Device Temperature Grade 1: –40°C to +125°C Ambient Operating Temperature
    • Device HBM ESD Classification Level 2
    • Device CDM ESD Classification Level C4B
  • One High-VIN Step-Down DC-DC Converter
    • Input Range of 3.6 V to 36 V
    • 250-mΩ High-Side MOSFET
    • Maximum Load Current 3.2 A, Output Adjustable 1.1 V to 20 V
    • Adjustable Switching Frequency 100 kHz to 2.5 MHz
    • Synchronizes to External Clock
    • High Efficiency at Light Loads With Pulse-Skipping Eco-mode? Control Scheme
    • Maximum 140-μA Operating Quiescent Current
    • Reset Output-Pin (Active Low, Open-Drain)
  • One High-VIN Low-Dropout (LDO) Voltage Regulator
    • Input Range of 3 V to 36 V
    • 280-mA Current Capability With Typical 35-μA Quiescent Current in No-Load Condition
    • Low-Dropout Voltage of 300 mV at
      IO = 200 mA (Typical)
  • Overcurrent Protection for Both Regulators
  • Overtemperature Protection
  • 14-Pin HTSSOP Package With PowerPAD? Integrated Circuit Package
  • Qualified for Automotive Applications
  • AEC-Q100 Qualified with the Following Results:
    • Device Temperature Grade 1: –40°C to +125°C Ambient Operating Temperature
    • Device HBM ESD Classification Level 2
    • Device CDM ESD Classification Level C4B
  • One High-VIN Step-Down DC-DC Converter
    • Input Range of 3.6 V to 36 V
    • 250-mΩ High-Side MOSFET
    • Maximum Load Current 3.2 A, Output Adjustable 1.1 V to 20 V
    • Adjustable Switching Frequency 100 kHz to 2.5 MHz
    • Synchronizes to External Clock
    • High Efficiency at Light Loads With Pulse-Skipping Eco-mode? Control Scheme
    • Maximum 140-μA Operating Quiescent Current
    • Reset Output-Pin (Active Low, Open-Drain)
  • One High-VIN Low-Dropout (LDO) Voltage Regulator
    • Input Range of 3 V to 36 V
    • 280-mA Current Capability With Typical 35-μA Quiescent Current in No-Load Condition
    • Low-Dropout Voltage of 300 mV at
      IO = 200 mA (Typical)
  • Overcurrent Protection for Both Regulators
  • Overtemperature Protection
  • 14-Pin HTSSOP Package With PowerPAD? Integrated Circuit Package

The TPS65321A-Q1 device is a combination of a high-VIN DC-DC step-down converter, referred to as the buck regulator, with an adjustable switch-mode frequency from 100-kHz to 2.5-MHz, and a high-VIN 280-mA low-dropout (LDO) regulator. The input range is 3.6 V to 36 V for the buck regulator, and 3 V to
36 V for the LDO regulator. The buck regulator has an integrated high-side MOSFET with an active-low, open-drain power-good output-pin (nRST). The LDO regulator features a low-input supply current of 45-µA typical in no-load, also has an integrated MOSFET. Low-voltage tracking feature enables TPS65321A-Q1 to track the input supply during cold-crank conditions.

The buck regulator provides a flexible design to fit system needs. The external loop compensation circuit allows for optimization of the converter response for the appropriate operating conditions. A low-ripple pulse-skip mode reduces the no-load input-supply current to maximum 140 µA.

The device has built-in protection features such as soft start, current-limit, thermal sensing and shutdown due to excessive power dissipation. Furthermore, the device has an internal undervoltage-lockout (UVLO) function that turns off the device when the supply voltage is too low.

The TPS65321A-Q1 device is a combination of a high-VIN DC-DC step-down converter, referred to as the buck regulator, with an adjustable switch-mode frequency from 100-kHz to 2.5-MHz, and a high-VIN 280-mA low-dropout (LDO) regulator. The input range is 3.6 V to 36 V for the buck regulator, and 3 V to
36 V for the LDO regulator. The buck regulator has an integrated high-side MOSFET with an active-low, open-drain power-good output-pin (nRST). The LDO regulator features a low-input supply current of 45-µA typical in no-load, also has an integrated MOSFET. Low-voltage tracking feature enables TPS65321A-Q1 to track the input supply during cold-crank conditions.

The buck regulator provides a flexible design to fit system needs. The external loop compensation circuit allows for optimization of the converter response for the appropriate operating conditions. A low-ripple pulse-skip mode reduces the no-load input-supply current to maximum 140 µA.

The device has built-in protection features such as soft start, current-limit, thermal sensing and shutdown due to excessive power dissipation. Furthermore, the device has an internal undervoltage-lockout (UVLO) function that turns off the device when the supply voltage is too low.
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頂層文檔 類型 標題 格式選項 下載最新的英語版本 日期
* 數(shù)據表 TPS65321A-Q1 36-V Step-Down Converter With Eco-mode? and LDO Regulator 數(shù)據表 PDF | HTML 2017年 11月 29日
應用手冊 Low Quiescent Current With Asynchronous Buck-Converters at High Temperatures 2016年 7月 20日
應用手冊 Interfacing TPS57xxx-Q1 and TPS65320-Q1 Family Devices With Low Impendence Exter 2015年 12月 8日
應用手冊 TPS65321-Q1 Design Checklist 2015年 11月 23日

設計與開發(fā)

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評估板

TPS65321EVM — 具有 EcoMode™ 和 LDO 穩(wěn)壓器的 36V 降壓轉換器評估模塊

德州儀器 (TI) TPS65321EVM 評估模塊 (EVM) 能幫助設計人員評估 TPS65321 開關模式電源 – 多路輸出電壓穩(wěn)壓器的功能和性能。

用戶指南: PDF
TI.com 上無現(xiàn)貨
仿真模型

TPS65321-Q1 PSpice Transient Model (Rev. A)

SLVMAL8A.ZIP (150 KB) - PSpice Model
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參考設計

TIDA-00677 — 適用于基于降壓 + 線性 LED 驅動器系統(tǒng)的 CISPR25 汽車尾燈參考設計

TIDA-00677 使用由上游降壓轉換器 (TPS65321-Q1) 供電的 TPS92630-Q1 線性 LED 驅動器展示了汽車 LED 尾燈應用（尾燈/制動燈、轉向燈和倒車燈），該轉換器由汽車電池電壓通過智能電池反向二極管直接供電。該設計還根據 CISPR25 和 ISO 7637-2 進行了 EMI/EMC 輻射和脈沖測試?？稍谟脩糁改现姓业接嘘P潛在成本節(jié)約和高效率（功率耗散和系統(tǒng)熱性能）的更多信息。有關由升壓轉換器驅動的類似設計，請參閱 TIDA-00678。有關通過汽車電池直接驅動的類似設計，請參閱 TIDA-00679。
設計指南: PDF
原理圖: PDF
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  • 引腳鍍層/焊球材料
  • MSL 等級/回流焊峰值溫度
  • MTBF/時基故障估算
  • 材料成分
  • 鑒定摘要
  • 持續(xù)可靠性監(jiān)測
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  • 制造廠地點
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