計算工具
產品規格表
TPS54340
- 4.5 V to 42 V (45 V Abs Max) Input Range
- 3.5 A Continuous Current, 4.5 A Minimum Peak Inductor Current Limit
- Current Mode Control DC-DC Converter
- 92-mΩ High-Side MOSFET
- High Efficiency at Light Loads with Pulse Skipping Eco-mode™
- Low Dropout at Light Loads with Integrated BOOT Recharge FET
- 146 µA Operating Quiescent Current
- 1 µA Shutdown Current
- 100 kHz to 2.5 MHz Fixed Switching Frequency
- Synchronizes to External Clock
- Adjustable UVLO Voltage and Hysteresis
- Internal Soft-Start
- Accurate Cycle-by-Cycle Current Limit
- Thermal, Overvoltage, and Frequency Foldback Protection
- 0.8 V 1% Internal Voltage Reference
- 8-Terminal HSOP with PowerPAD™ Package
- –40°C to 150°C TJ Operating Range
- Create a Custom Design with WEBENCH Tools
The TPS54340 is a 42 V, 3.5 A, step down regulator with an integrated high side MOSFET. The device survives load dump pulses up to 45 V per ISO 7637. Current mode control provides simple external compensation and flexible component selection. A low ripple pulse skip mode reduces the no load supply current to 146 µA. Shutdown supply current is reduced to 1 µA when the enable pin is pulled low.
Undervoltage lockout is internally set at 4.3 V but can be increased using the enable pin. The output voltage start up ramp is internally controlled to provide a controlled start up and eliminate overshoot.
A wide switching frequency range allows either efficiency or external component size to be optimized. Frequency foldback and thermal shutdown protects internal and external components during an overload condition.
The TPS54340 is available in an 8-terminal thermally enhanced HSOP PowerPAD™ package.
技術文件
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檢視所有 10 | 類型 | 標題 | 日期 | ||
|---|---|---|---|---|
| * | Data sheet | TPS54340 42 V Input, 3.5 A, Step Down DC-DC Converter with Eco-mode™ datasheet (Rev. D) | PDF | HTML | 2017年 3月 20日 |
| Application note | NRND & Differences TPS54340/360/540/560 and TPS54340B/360B/540B/560B | 2019年 4月 5日 | ||
| Selection guide | Power Management Guide 2018 (Rev. R) | 2018年 6月 25日 | ||
| Application note | Creating a Universal Car Charger for USB Devices From the TPS54240 and TPS2511 (Rev. E) | 2013年 9月 16日 | ||
| Test report | Test Report for the iPad Automotive Charger | 2013年 6月 11日 | ||
| EVM User's guide | Using the TPS54340 Step-Down Converter Evaluation Module (Rev. A) | 2013年 2月 12日 | ||
| Application note | Create a Split-Rail Power Supply with a Wide Input Voltage Buck Regulator (Rev. A) | 2012年 10月 26日 | ||
| Application note | Create an Inverting Power Supply from a Step-Down Regulator (Rev. B) | 2012年 10月 26日 | ||
| Application note | Level Shifting Control for an Inverting Buck-boost | 2012年 10月 10日 | ||
| Application note | Creating GSM Power Supply from TPS54260 | 2010年 4月 30日 |
設計與開發
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開發板
TPS54340EVM-182 — TPS54340 降壓轉換器評估模組
The Texas Instruments TPS54340EVM-182 evaluation module (EVM) helps designers evaluate the performance of the TPS54340 Step-Down DC/DC Converter. The EVM operates from a 8V to 60V input (12V nominal) and provides a 5.0V output at 3.5A. The EVM demonstrates the small, printed-circuit-board (PCB) (...)
使用指南: PDF
計算工具
SWIFTINV-CALC — SWIFT™ Converter Inverting Buck/Boost Calculator
The SWIFTINV-CALC Excel sheet is a complementary worksheet to the SLVA317 application note. The worksheet is used to calculate the external components needed to create a negative output voltage from a positive input voltage. The tool features several families of wide input voltage, current-mode (...)
支援產品和硬體
產品
AC/DC & DC/DC converters (integrated FET)
參考設計
TIDA-01414 — TPA3244 Dolby Atmos 條型音箱參考設計
The TPA3244 Dolby Atmos® Soundbar Reference Design combines Ultra-HD audio and high dynamic range to create room filling audio experience from a small form factor system. The design leverages TI's high-performance TPA3244 amplifier, PCM5252 high-performance DAC with processing, and an (...)
參考設計
PMP10282 — 5V@2.1A USB 充電器汽車參考設計
This USB 3.0 charger provides 5V @ 2.1A over an automotive input range of 8V - 40V. It uses the integrated FET TPS54340 PWM Buck controller and implements cable voltage droop compensation. A TPS2546 charging port controller provides data line switching plus an integrated FET with dual current (...)
參考設計
PMP4488 — USB-C DFP 5V3A 充電器參考設計
The PMP4488 is low cost 5V3A charger reference design providing Type C DFP feature and is compliant with BC1.2 device. The design includes a non-synchronous step-down regulator TPS54340 and highly integrated USB type-C controller TPS25810. The PMP4488 demonstrates high efficiency, good (...)
參考設計
PMP8851 — 車用 USB 電池充電參考設計
This USB battery charging reference design is optimized for size in order to fit within an automobile power accessory port. The design features a USB dedicated charging port controller with integrated current limiting power switch and a 42V DC/DC converter. High integration and small package sizing (...)
參考設計
TIDA-IPAD-AUTOMOTIVE-CHARGER-REFERENCE-DESIGN — iPad® 汽車充電器參考設計
The reference design provides customers an extremely small form factor but still compliant to the iPad® charge current requirement of up to 2.1A at 5V. The switching buck, TPS54340, features switching frequency that is up to 2MHz which is above the audio band requirements. Customers can (...)
| 封裝 | 引腳 | 下載 |
|---|---|---|
| HSOIC (DDA) | 8 | 檢視選項 |
訂購與品質
內含資訊：
- RoHS
- REACH
- 產品標記
- 鉛塗層/球物料
- MSL 等級/回焊峰值
- MTBF/FIT 估算值
- 材料內容
- 資格摘要
- 進行中可靠性監測
內含資訊：
- 晶圓廠位置
- 組裝地點