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功能相似於所比較的產品。
TPS40192
- Input Operating Voltage Range: 4.5 V to 18 V
- Up to 20-A Output Currents
- Supports Pre-Biased Outputs
- 0.5%, 591-mV Reference
- Switching Frequency
- TPS40192: 600 kHz
- TPS40193: 300 kHz
- Three Selectable Thermally Compensated Short-Circuit Protection Levels
- Hiccup Restart from Faults
- Internal 5-V Regulator
- High-Side and Low-Side MOSFET ON-resistance (RDS(on)) Current Sensing
- 10-Pin 3 mm × 3 mm SON Package
- Internal 4-ms Soft-Start Time
- Thermal Shutdown Protection at 145°C
TPS40192 and TPS40193 are cost-optimized synchronous buck controllers that operate from 4.5 V to 18 V input. These controllers implement a voltage-mode control architecture with the switching frequency fixed at either 600 kHz (TPS40192) or 300 kHz (TPS40193). The higher switching frequency facilitates the use of smaller inductor and output capacitors, thereby providing a compact power-supply solution. An adaptive anti-cross conduction scheme is used to prevent shoot through current in the power FETs.
Short circuit detection is done by sensing the voltage drop across the low-side MOSFET when it is on and comparing it with a user selected threshold of 100 mV, 200 mV or 280 mV. The threshold is set with a single external resistor connected from COMP to GND. This resistor is sensed at startup and the selected threshold is latched. Pulse-by-pulse limiting (to prevent current runaway) is provided by sensing the voltage across the high-side MOSFET when it is on and terminating the cycle when the voltage drop rises above a fixed threshold of 550 mV. When the controller senses an output short circuit, both MOSFETs are turned off and a timeout period is observed before attempting to restart. This behavior provides limited power dissipation in the event of a sustained fault.
技術文件
| 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 | TPS4019x 4.5-V to 18-V Input, Voltage-Mode, Synchronous Buck Controller With Power Good datasheet (Rev. H) | PDF | HTML | 2019/5/23 | ||
| 選擇指南 | Power Management Guide 2018 (Rev. R) | 2018/6/25 | ||||
| 選擇指南 | DC/DC Buck Controller Solutions Selection Guide | 2018/2/6 | ||||
| 應用說明 | Not All Jitter Is Created Equal (Rev. A) | 2015/7/4 | ||||
| 應用說明 | Enabling Multiple TPS4019x Devices | 2012/3/29 | ||||
| 應用說明 | 'C6472 12Vin Flexible Pwr Design Using DCDC Controllers and LDOs (8x C6472) | 2010/3/26 | ||||
| 應用說明 | TMS320C6472 5V Input Pwr Design, Integrated FET DC/DC Converters and Controllers | 2010/3/26 | ||||
| 應用說明 | Power Reference Design for the 'C6472, 12V DCDC Controllers, and LDOs | 2010/3/26 | ||||
| 應用說明 | 5Vin DM643x Power using DC/DC Controllers and LDO | 2008/10/9 |
設計與開發
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SLUC263 — Type III Compensation Calculation Tool
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| VSON (DRC) | 10 | Ultra Librarian |
訂購與品質
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