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TPS65235

現行
立即訂購
產品規格表

TPS65235

現行
產品規格表 立即訂購

產品詳細資料

Rating Catalog Topology Boost Vin (max) (V) 20 Vin (min) (V) 4.5 Vout (max) (V) 20 Vout (min) (V) 11 Switch current limit (typ) (A) 3 Features Adjustable current limit, I2C, Nonsynchronous, Power good Operating temperature range (°C) -40 to 125 Iq (typ) (A) 0.00012 Duty cycle (max) (%) 78
Rating Catalog Topology Boost Vin (max) (V) 20 Vin (min) (V) 4.5 Vout (max) (V) 20 Vout (min) (V) 11 Switch current limit (typ) (A) 3 Features Adjustable current limit, I2C, Nonsynchronous, Power good Operating temperature range (°C) -40 to 125 Iq (typ) (A) 0.00012 Duty cycle (max) (%) 78
WQFN (RUK) 20 9 mm² (3 mm × 3 mm)
  • Complete integrated solution for LNB and I2C interface
  • DiSEqC 2.x and DiSEqC 1.x compatible
  • Supports 5-V, 12-V, and 15-V power rail
  • Up to 1000-mA accurate output current limit adjustable by external resistor
  • Boost switch peak current limit proportional to LDO current limit
  • Boost converter with 140-mΩ low Rds(on) internal power switch
  • Boost switching frequency 1-MHz or 500-kHz selectable
  • Dedicated enable pin for non-I2C application
  • Low drop output LDO with push-pull output stage for VLNB output
  • Built-in accurate 22-kHz tone generator and external tone input support
  • Supports both external 44-kHz and 22-kHz tone input
  • Adjustable soft-start and 13-V to 18-V voltage transition time
  • 650 mV to 750-mV, 22-kHz tone amplitude selection
  • I2C registers accessible with EN low
  • Short circuit dynamic protection
  • Diagnostics for output voltage level, DiSEqC tone input and output, current level, and cable connection
  • Thermal protection available
  • 20-lead WQFN 3-mm × 3-mm (RUK) package
  • Complete integrated solution for LNB and I2C interface
  • DiSEqC 2.x and DiSEqC 1.x compatible
  • Supports 5-V, 12-V, and 15-V power rail
  • Up to 1000-mA accurate output current limit adjustable by external resistor
  • Boost switch peak current limit proportional to LDO current limit
  • Boost converter with 140-mΩ low Rds(on) internal power switch
  • Boost switching frequency 1-MHz or 500-kHz selectable
  • Dedicated enable pin for non-I2C application
  • Low drop output LDO with push-pull output stage for VLNB output
  • Built-in accurate 22-kHz tone generator and external tone input support
  • Supports both external 44-kHz and 22-kHz tone input
  • Adjustable soft-start and 13-V to 18-V voltage transition time
  • 650 mV to 750-mV, 22-kHz tone amplitude selection
  • I2C registers accessible with EN low
  • Short circuit dynamic protection
  • Diagnostics for output voltage level, DiSEqC tone input and output, current level, and cable connection
  • Thermal protection available
  • 20-lead WQFN 3-mm × 3-mm (RUK) package

Designed for analog and digital satellite receivers, the TPS65235 is a monolithic voltage regulator with I2C interface; specifically to provide the 13-V to 18-V power supply and the 22-kHz tone signal to the LNB down converter in the antenna dish or to the multi-switch box. It offers a complete solution with minimum component count, low power dissipation together with simple design and I2C standard interface.

TPS65235 features high power efficiency. The boost converter integrates a 140-mΩ power MOSFET running at 1 MHz or 500 kHz selectable switching frequency. Drop out voltage at the linear regulator is 0.8 V to minimize power loss. TPS65235 provides multiple ways to generate the 22 kHz signal. Integrated linear regulator with push-pull output stage generates 22-kHz tone signal superimposed at the output even at zero loading. Current limit of linear regulator can be programmed by external resistor with ±10% accuracy. Full range of diagnostic read by I2C is available for system monitoring.

TPS65235 supports advanced DiSEqC 2.x standard with 22-kHz tone detection circuit and output interface.

Designed for analog and digital satellite receivers, the TPS65235 is a monolithic voltage regulator with I2C interface; specifically to provide the 13-V to 18-V power supply and the 22-kHz tone signal to the LNB down converter in the antenna dish or to the multi-switch box. It offers a complete solution with minimum component count, low power dissipation together with simple design and I2C standard interface.

TPS65235 features high power efficiency. The boost converter integrates a 140-mΩ power MOSFET running at 1 MHz or 500 kHz selectable switching frequency. Drop out voltage at the linear regulator is 0.8 V to minimize power loss. TPS65235 provides multiple ways to generate the 22 kHz signal. Integrated linear regulator with push-pull output stage generates 22-kHz tone signal superimposed at the output even at zero loading. Current limit of linear regulator can be programmed by external resistor with ±10% accuracy. Full range of diagnostic read by I2C is available for system monitoring.

TPS65235 supports advanced DiSEqC 2.x standard with 22-kHz tone detection circuit and output interface.
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重要文件 類型 標題 格式選項 下載最新的英文版本 日期
* 資料表 TPS65235 LNB Voltage Regulator With I2C Interface datasheet (Rev. D) PDF | HTML 2021/5/26
應用說明 DiSEqC™ 2.x Filter Optimization PDF | HTML 2021/5/11
應用說明 LNB design considerations on TPS65233, TPS65235 PDF | HTML 2017/9/25
應用說明 DiSEqC™ Protocol and LNB Voltage Regulator TPS65235 for Satellite STB/TV 2016/12/14
使用指南 Evaluation Module for the TPS65235 LNB Voltage Regulator With I2C Interface 2015/11/26

設計與開發

如需其他條款或必要資源，請按一下下方的任何標題以檢視詳細頁面 (如有)。

開發板

TPS65235EVM-694 — 適用於 DisEqC2.x，具有 I2C 介面的 TPS65235 LNB 電壓穩壓器評估模組

TPS65235EVM-694 評估模組 (EVM) 是完全組裝且經過測試的電路，用於評估適用於 DisEqC2.x 應用的 TPS65235。此 EVM 包含輸入和輸出連接器以及控制跨接器，可輕鬆評估裝置功能。與 TPS65235EVM-747 相比，TPS65235EVM-694 具有 DisEqC 2.x 支援的電路。TPS65235 是一款具有 I2C 介面的單體電壓穩壓器，專門用於向碟形天線中的 LNB 降轉換器或多開關盒提供 13V/18V 電源和 22kHz 音調訊號。
使用指南: PDF
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開發板

TPS65235EVM-747 — 適用於 DisEqC1.x，具有 I2C 介面的 TPS65235 LNB 電壓穩壓器評估模組

TPS65235EVM-PWR747 評估模組 (EVM) 是完全組裝且經過測試的電路，用於評估適用於 DisEqC1.x 應用的 TPS65235。此 EVM 包含輸入和輸出連接器以及控制跨接器，可輕鬆評估裝置功能。TPS65235 是一款具有 I2C 介面的單體電壓穩壓器，專門用於向碟形天線中的 LNB 降轉換器或多開關盒提供 13V/18V 電源和 22kHz 音調訊號。

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開發模組 (EVM) 的 GUI

SLVC651 — TPS65235EVM GUI

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封裝 針腳 CAD 符號、佔位空間與 3D 模型
WQFN (RUK) 20 Ultra Librarian
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