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TPS25846-Q1

アクティブ

クライアント・モード・サポート機能搭載、USB BC1.2 5V 3.5A 出力、36V 入力の同期整流降圧コンバータ

ご注文はこちら
データシート

TPS25846-Q1

アクティブ
データシート ご注文はこちら

製品詳細

Product type Charge port converter Vin (min) (V) 4.5 Vin (max) (V) 36 Continuous current (max) (A) 3.5 Current limit (A) User Selectable Current Limit Operating temperature range (°C) -40 to 125 Enable Adjustable Enable Threshold Number of switches 1 Rating Automotive
Product type Charge port converter Vin (min) (V) 4.5 Vin (max) (V) 36 Continuous current (max) (A) 3.5 Current limit (A) User Selectable Current Limit Operating temperature range (°C) -40 to 125 Enable Adjustable Enable Threshold Number of switches 1 Rating Automotive
VQFN (RHB) 32 25 mm² 5 x 5
  • AEC-Q100 qualified for automotive applications:
    • Temperature grade 1: –40°C to +125°C, TA
    • HBM ESD classification level H2
    • CDM ESD classification level C5
  • Synchronous buck DC/DC regulator
    • Input voltage range: 4.5 V to 36 V
    • Output current: 3.5 A
    • 5.1-V output voltage with ±1% accuracy
    • Current mode control
    • Adjustable frequency: 300 kHz to 2.2 MHz
    • Frequency synchronization to external clock
    • FPWM with spread-spectrum dithering
    • Internal compensation for ease of use
  • Compliant to USB-IF standards
    • CDP/SDP mode per USB BC1.2
  • Optimized for USB power and communication
    • User-programmable USB current limit
    • Cable droop compensation up to 1.5 V
    • High bandwidth data switches on DP and DM
    • Client mode for system update
  • Integrated protection
    • VBUS short-to-VBAT protection
    • DP_IN and DM_IN short-to-VBAT
    • DP_IN and DM_IN short-to-VBUS
    • DP_IN, DM_IN IEC 61000-4-2 rated
      • ±8-kV contact and ±15-kV air discharge
  • Fault flag reports
  • 32-pin QFN package with wettable flank
  • AEC-Q100 qualified for automotive applications:
    • Temperature grade 1: –40°C to +125°C, TA
    • HBM ESD classification level H2
    • CDM ESD classification level C5
  • Synchronous buck DC/DC regulator
    • Input voltage range: 4.5 V to 36 V
    • Output current: 3.5 A
    • 5.1-V output voltage with ±1% accuracy
    • Current mode control
    • Adjustable frequency: 300 kHz to 2.2 MHz
    • Frequency synchronization to external clock
    • FPWM with spread-spectrum dithering
    • Internal compensation for ease of use
  • Compliant to USB-IF standards
    • CDP/SDP mode per USB BC1.2
  • Optimized for USB power and communication
    • User-programmable USB current limit
    • Cable droop compensation up to 1.5 V
    • High bandwidth data switches on DP and DM
    • Client mode for system update
  • Integrated protection
    • VBUS short-to-VBAT protection
    • DP_IN and DM_IN short-to-VBAT
    • DP_IN and DM_IN short-to-VBUS
    • DP_IN, DM_IN IEC 61000-4-2 rated
      • ±8-kV contact and ±15-kV air discharge
  • Fault flag reports
  • 32-pin QFN package with wettable flank

The TPS25846-Q1 is a USB Type-A BC1.2 charging solution that includes a synchronous DC/DC converter. With cable droop compensation, the Vbus voltage remains constant regardless of load current, ensuring connected portable devices are charged at optimal current and voltage even under heavy loads.

The TPS25846-Q1 includes high bandwidth analog switches for DP and DM pass-through. The device also integrates short to battery protection on VBUS, DM_IN and DP_IN pins. These pins can withstand voltage up to 18 V.

The synchronous buck regulator operates with current mode control and is internally compensated to simplify design. A resistor on the RT pin sets the switching frequency between 300 kHz and 2.2 MHz. Operating below 400 kHz results in better system efficiency. Operation above 2.1 MHz avoids the AM radio bands and allows for use of a smaller inductor.

The TPS25846-Q1 integrates electrical signatures necessary for legacy devices which use USB data lines to determine charging configuration.

A precision current sense amplifier is included for user programmable cable droop compensation and current limit tuning. Cable compensation aids portable devices in charging at optimum current and voltage under heavy loads by changing the buck regulator output voltage linearly with load current to counteract the voltage drop due to wire resistance in automotive cabling. The VBUS voltage measured at a connected portable device remains approximately constant, regardless of load current, allowing the portable device’s battery charger to work optimally.

The USB specifications require current limiting of USB charging ports, but give system designers reasonable flexibility to choose overcurrent protection levels based on system requirements. The TPS25846-Q1 uses a novel two-threshold current limit circuit allowing system designers to either program average current limit protection of the buck regulator, or optionally, current limit using an external NMOS between the CSN/OUT and BUS pins. The NFET implementation enables the TPS25846-Q1 buck regulator to supply a 5-V output for other loads during an overcurrent condition on the USB port.

Protection features include cycle-by-cycle current limit, hiccup short-circuit protection, undervoltage lockout, VBUS overvoltage and overcurrent, data line (Dx) short to VBUS, and die overtemperature protection.

The TPS25846-Q1 includes high bandwidth analog switches for DP and DM pass-through, and support data line (Dx) short-to-VBAT protection.

The TPS25846-Q1 is a USB Type-A BC1.2 charging solution that includes a synchronous DC/DC converter. With cable droop compensation, the Vbus voltage remains constant regardless of load current, ensuring connected portable devices are charged at optimal current and voltage even under heavy loads.

The TPS25846-Q1 includes high bandwidth analog switches for DP and DM pass-through. The device also integrates short to battery protection on VBUS, DM_IN and DP_IN pins. These pins can withstand voltage up to 18 V.

The synchronous buck regulator operates with current mode control and is internally compensated to simplify design. A resistor on the RT pin sets the switching frequency between 300 kHz and 2.2 MHz. Operating below 400 kHz results in better system efficiency. Operation above 2.1 MHz avoids the AM radio bands and allows for use of a smaller inductor.

The TPS25846-Q1 integrates electrical signatures necessary for legacy devices which use USB data lines to determine charging configuration.

A precision current sense amplifier is included for user programmable cable droop compensation and current limit tuning. Cable compensation aids portable devices in charging at optimum current and voltage under heavy loads by changing the buck regulator output voltage linearly with load current to counteract the voltage drop due to wire resistance in automotive cabling. The VBUS voltage measured at a connected portable device remains approximately constant, regardless of load current, allowing the portable device’s battery charger to work optimally.

The USB specifications require current limiting of USB charging ports, but give system designers reasonable flexibility to choose overcurrent protection levels based on system requirements. The TPS25846-Q1 uses a novel two-threshold current limit circuit allowing system designers to either program average current limit protection of the buck regulator, or optionally, current limit using an external NMOS between the CSN/OUT and BUS pins. The NFET implementation enables the TPS25846-Q1 buck regulator to supply a 5-V output for other loads during an overcurrent condition on the USB port.

Protection features include cycle-by-cycle current limit, hiccup short-circuit protection, undervoltage lockout, VBUS overvoltage and overcurrent, data line (Dx) short to VBUS, and die overtemperature protection.

The TPS25846-Q1 includes high bandwidth analog switches for DP and DM pass-through, and support data line (Dx) short-to-VBAT protection.
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技術資料

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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 TPS25846-Q1 車載用 USB Type-A BC1.2、5V、3.5A 出力、36V 入力同期 データシート (Rev. B) 2022年 3月 21日
機能安全情報 TPS25846-Q1 Functional Safety, FIT Rate, Failure Mode Distribution and Pin FMA PDF | HTML 2021年 2月 24日
証明書 TPS25846Q1EVM-117 EU Declaration of Conformity (DoC) (Rev. A) 2020年 8月 11日
ユーザー・ガイド TPS25846-Q1 Evaluation Module 2020年 5月 18日
アプリケーション・ノート How to Improve an Eye Diagram With the TPS25840-Q1 Device Using a Long USB Cable 2020年 1月 10日
アプリケーション・ノート Ground Shift Phenomenon Recommendation of TPS2583x PDF | HTML 2019年 12月 2日

設計および開発

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。

評価ボード

TPS25846Q1EVM-117 — TPS25846-Q1 USB BC1.2 synchronous buck evaluation module with cable compensation and client mode

TPS25846Q1EVM-117 は、ケーブル補償機能を搭載した、USB Type-A 5V 3.5A 出力、36V 入力の同期整流降圧向けの評価基板 (EVM) です。この評価基板は、電源端子台と、デバイスの充電やデータ通信を実施するための USB Type-A コネクタを実装済みです。ケーブル補償、電流制限、スイッチング周波数は、EVM (評価基板) 上の抵抗を使用して調整できます。
ユーザー ガイド: PDF
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シミュレーション・モデル

TPS25830-Q1 PSPICE Transient Ecrypted Model

SLVMD42.ZIP (203 KB) - PSpice Model
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リファレンス・デザイン

PMP40725 — CISPR 25 Class 5 400-kHz rated 12-W automotive USB Type-A charger reference design

This reference design is an EMI-optimized design for automotive USB Type-A charger with single 12-W output. The TPS25846-Q1 is used as DC-DC regulator and port controller. The switching frequency is 400kHz. The front-end filter is designed and PCB layout is optimized to pass stringent CISPR 25 (...)
試験報告書: PDF
回路図: PDF
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
VQFN (RHB) 32 Ultra Librarian
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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 定格 / ピーク リフロー
  • MTBF/FIT 推定値
  • 使用原材料
  • 認定試験結果
  • 継続的な信頼性モニタ試験結果
記載されている情報：
  • ファブの拠点
  • 組み立てを実施した拠点

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