TPS54336A

現行

具 Eco-mode(tm) 的 4.5V 至 28V 輸入、3A 同步降壓轉換器

產品詳細資料

Rating Catalog Operating temperature range (°C) -40 to 150 Topology Buck Type Converter Iout (max) (A) 3 Vin (min) (V) 4.5 Vin (max) (V) 28 Switching frequency (min) (kHz) 340 Switching frequency (max) (kHz) 340 Features Enable, Light Load Efficiency, Soft Start Adjustable, Synchronous Rectification, UVLO adjustable Control mode current mode Vout (min) (V) 0.8 Vout (max) (V) 24 Iq (typ) (µA) 600 Duty cycle (max) (%) 90
Rating Catalog Operating temperature range (°C) -40 to 150 Topology Buck Type Converter Iout (max) (A) 3 Vin (min) (V) 4.5 Vin (max) (V) 28 Switching frequency (min) (kHz) 340 Switching frequency (max) (kHz) 340 Features Enable, Light Load Efficiency, Soft Start Adjustable, Synchronous Rectification, UVLO adjustable Control mode current mode Vout (min) (V) 0.8 Vout (max) (V) 24 Iq (typ) (µA) 600 Duty cycle (max) (%) 90
HSOIC (DDA) 8 29.4 mm² 4.9 x 6 VSON (DRC) 10 9 mm² 3 x 3
  • Synchronous 128-mΩ and 84-mΩ MOSFETs for
    3-A Continuous Output Current
  • TPS54335A: Internal 2-ms Soft-Start,
    50-kHz to 1.5-MHz Adjustable Frequency
  • TPS54336A: Adjustable Soft-Start,
     Fixed 340-kHz Frequency
  • Low 2-µA Shutdown, Quiescent Current
  • 0.8-V Voltage Reference with ±0.8%
    Accuracy
  • Current Mode Control
  • Monotonic Startup into Pre-Biased Outputs
  • Pulse Skipping for Light-Load Efficiency
  • Hiccup Mode Overcurrent Protection
  • Thermal Shutdown (TSD) and
    Overvoltage Transition Protection
  • 8-Pin SO PowerPAD and 10-Pin VSON Packages
  • Synchronous 128-mΩ and 84-mΩ MOSFETs for
    3-A Continuous Output Current
  • TPS54335A: Internal 2-ms Soft-Start,
    50-kHz to 1.5-MHz Adjustable Frequency
  • TPS54336A: Adjustable Soft-Start,
     Fixed 340-kHz Frequency
  • Low 2-µA Shutdown, Quiescent Current
  • 0.8-V Voltage Reference with ±0.8%
    Accuracy
  • Current Mode Control
  • Monotonic Startup into Pre-Biased Outputs
  • Pulse Skipping for Light-Load Efficiency
  • Hiccup Mode Overcurrent Protection
  • Thermal Shutdown (TSD) and
    Overvoltage Transition Protection
  • 8-Pin SO PowerPAD and 10-Pin VSON Packages

The TPS5433xA family of devices are synchronous converters with an input-voltage range of 4.5 to 28 V. These devices include an integrated low-side switching FET that eliminates the need for an external diode which reduces component count.

Efficiency is maximized through the integrated 128-mΩ and 84-mΩ MOSFETs, low IQ and pulse skipping at light loads. Using the enable pin, the shutdown supply current is reduced to 2 μA. This step-down (buck) converter provides accurate regulation for a variety of loads with a well-regulated voltage reference that is 1.5% over temperature.

Cycle-by-cycle current limiting on the high-side MOSFET protects the TPS5433xA family of devices in overload situations and is enhanced by a low-side sourcing current limit which prevents current runaway. A low-side sinking current-limit turns off the low-side MOSFET to prevent excessive reverse current. Hiccup protection is triggered if the overcurrent condition continues for longer than the preset time. Thermal shutdown disables the device when the die temperature exceeds the threshold and enables the device again after the built-in thermal hiccup time.

The TPS5433xA family of devices are synchronous converters with an input-voltage range of 4.5 to 28 V. These devices include an integrated low-side switching FET that eliminates the need for an external diode which reduces component count.

Efficiency is maximized through the integrated 128-mΩ and 84-mΩ MOSFETs, low IQ and pulse skipping at light loads. Using the enable pin, the shutdown supply current is reduced to 2 μA. This step-down (buck) converter provides accurate regulation for a variety of loads with a well-regulated voltage reference that is 1.5% over temperature.

Cycle-by-cycle current limiting on the high-side MOSFET protects the TPS5433xA family of devices in overload situations and is enhanced by a low-side sourcing current limit which prevents current runaway. A low-side sinking current-limit turns off the low-side MOSFET to prevent excessive reverse current. Hiccup protection is triggered if the overcurrent condition continues for longer than the preset time. Thermal shutdown disables the device when the die temperature exceeds the threshold and enables the device again after the built-in thermal hiccup time.

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類型 標題 日期
* Data sheet TPS5433xA 4.5-V to 28-V Input, 3-A Output, Synchronous Step-Down DC-DC Converter datasheet (Rev. D) PDF | HTML 2016年 2月 10日
Analog Design Journal Control-Mode Quick Reference Guide (Rev. B) PDF | HTML 2023年 8月 29日
User guide TPS54336A Step-Down Converter Evaluation Module User's Guide (Rev. A) PDF | HTML 2021年 10月 7日

設計與開發

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開發板

TPS54336AEVM-010 — TPS54336A 同步降壓轉換器評估模組

The TPS54336AEVM-010 is a fully assembled and tested circuit for evaluating the TPS54366A synchronous step-down SWIFT™ converter. The EVM converts a 8-V to 28-V input voltage to a regulated 5-V output voltage that delivers up to 3 A. The TPS54336A enables small designs by integrating the (...)

使用指南: PDF | HTML
TI.com 無法提供
模擬型號

TPS54336A TINA-TI Average Reference Design

SLVM979.TSC (235 KB) - TINA-TI Reference Design
模擬型號

TPS54336A TINA-TI Average Spice Model

SLVM980.ZIP (7 KB) - TINA-TI Spice Model
模擬型號

TPS54336A Unencrypted PSpice Average Model Package (Rev. A)

SLVM898A.ZIP (29 KB) - PSpice Model
模擬型號

TPS54336A Unencrypted PSpice Transient Model Package (Rev. A)

SLVMAM8A.ZIP (97 KB) - PSpice Model
參考設計

TIDA-01365 — 雙向 RS-485 扇出集線器參考設計

The Bidirectional RS-485 Fan-Out Hub Reference Design (TIDA-01365) documents and tests an RS-485 fan-out hub design where 1:N and N:1 RS-485 signals are aggregated in and out of any bus topology. This design also features automatic direction control, for reduced pin count on microcontrollers, and (...)
Design guide: PDF
電路圖: PDF
封裝 針腳 CAD 符號、佔位空間與 3D 模型
HSOIC (DDA) 8 Ultra Librarian
VSON (DRC) 10 Ultra Librarian

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