低输入 2.25V-5.5V 300kHz 频率同步降压控制器,仅用作源控制器
The TPS4000x are controllers for low-voltage, non-isolated synchronous buck regulators. These controllers drive an N-channel MOSFET for the primary buck switch, and an N-channel MOSFET for the synchronous rectifier switch, thereby achieving very high-efficiency power conversion. In addition, the device controls the delays from main switch off to rectifier turn-on and from rectifier turn-off to main switch turn-on in such a way as to minimize diode losses both conduction and recovery in the synchronous rectifier with s proprietary Predictive Gate Drive technology. The reduction in these losses is significant and increases efficiency. For a given converter power level, smaller FETs can be used, or heat sinking can be reduced or even eliminated.
The current-limit threshold is adjustable with a single resistor connected to the device. The TPS4000x controllers implement a closed-loop soft start function. Startup ramp time is set by a single external capacitor connected to the SS/SD pin. The SS/SD pin is also used for shutdown.
PowerPAD and Predictive Gate Drive are trademarks of Texas Instruments Incorporated.
型号 | 品牌 | 下载 |
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TPS40000 | TI 德州仪器 | 下载 |
TPS40131EVM | TI 德州仪器 | 下载 |
TPS40077EVM-001 | TI 德州仪器 | 下载 |
TPS40140EVM-003 | TI 德州仪器 | 下载 |
TPS40140EVM-002 | TI 德州仪器 | 下载 |
TPS40180EVM | TI 德州仪器 | 下载 |
TPS40170RGYT | TI 德州仪器 | 下载 |
TPS40140RHHT | TI 德州仪器 | 下载 |
TPS40197RGYT | TI 德州仪器 | 下载 |
TPS40041DRBR | TI 德州仪器 | 下载 |
TPS40055PWPR | TI 德州仪器 | 下载 |