TPS65253
- Wide Input Supply Voltage Range:
4.5 V – 16 V - Output Range: 0.8 V to ~VIN–1 V
- Fully Integrated Dual Buck, 3.5-A/2.5-A Continuous Current
(4-A/3-A Maximum Current) - High Efficiency
- 300-kHz – 1.2-MHz Switching Frequency Set by External Resistor
- External Eenable/Sequencing Pins
- Adjustable Cycle-by-Cycle Current Limit Set by External Resistor
- Soft-Start Pins
- Current-Mode Control With Simple Compensation Circuit
- Power Good and Reset Generator
- Low Power Mode Set By External Signal
- Supervisory Circuit
- QFN Package, 28-Pin 5 mm × 5 mm RHD
- APPLICATIONS
- DTV
- DSL Modems
- Cable Modems
- Set Top Boxes
- Car DVD Players
- Home Gateway and Access Point Networks
- Wireless Routers
The TPS65253 features two synchronous wide input range high efficiency buck converters. The converters are designed to simplify product application while giving designers the options to optimize their usage according to the target application.
The converters can operate in 5-, 9- and 12-V systems and have integrated power transistors. The output voltage can be set externally using a resistor divider to any value between 0.8 V and the input supply minus 1 V. Each converter features an enable pin that allows a delayed start-up for sequencing purposes, soft-start pin that allows adjustable soft-start time by choosing the soft-start capacitor, and a current limit (RLIMx) pin that enables designer to adjust current limit by selecting an external resistor and optimize the choice of inductor. The CMP pin allows optimizing transient versus dc accuracy response with a simple RC compensation.
The switching frequency of the converters is set by an external resistor connected to ROSC pin. The switching regulators are designed to operate from 300 kHz to 1.2 MHz. The converters operate with 180° phase between then to minimize the input filter requirements.
TPS65253 also features a low power mode enabled by an external signal, which allows for a reduction on the input power supplied to the system when the host processor is in stand-by (low activity) mode.
TPS65253 features a supervisor circuit that monitors both converters and provides a PGOOD signal (End of Reset) with a 32-ms timer.
TPS65253 is packaged in a small, thermally efficient 28-pin QFN package.
技術文件
| 類型 | 標題 | 日期 | ||
|---|---|---|---|---|
| * | Data sheet | 4.5 V - 16 V IN, HIGH CURRENT, SYNCH. STEP DOWN DUAL BUCK CONVERTER w/ Int FETS datasheet | 2011年 6月 15日 | |
| EVM User's guide | TPS65253 Buck Converter Evaluation Module User's Guide (Rev. B) | PDF | HTML | 2021年 5月 26日 | |
| Selection guide | Power Management Guide 2018 (Rev. R) | 2018年 6月 25日 | ||
| Application note | TPS65250/1/2/3 LAYOUT GUIDE | 2013年 1月 15日 | ||
| Application note | TPS65250/1/2/3 Output Filter Selection Guidelines | 2013年 1月 15日 |
設計與開發
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TPS65253EVM — 具有 2 個降壓轉換器和整合式 FET 且適用於 TPS65253 4.5V 至 16V 輸入的評估模組
The TPS65253EVM is a high current, synchronous step down two buck switcher evaluation module. This evaluation module is designed to provide access to the features of the TPS65253. Some modifications can be made to this module to test performance at different input and output voltages, current and (...)
TPS65253 Unencrypted PSpice Average Model Package (Rev. A)
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| VQFN (RHD) | 28 | Ultra Librarian |
訂購與品質
- 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
- 認證摘要
- 進行中持續性的可靠性監測
- 晶圓廠位置
- 組裝地點