TPS40040
- 2.25-V to 5.5-V Input
- Output Voltage from 0.6 V to 90% of VIN
- High-Side Drive for N-Channel FET
- Supports Pre-Biased Outputs
- Adaptive Anti-Cross Conduction Gate Drive
- 1%, 0.6-V Reference
- Two Fixed Switching Frequency Versions, TPS40040 (300 kHz) and TPS40041 (600 kHz)
- Three Selectable Short Circuit Protection Levels of 105 mV, 180 mV and 310 mV
- Hiccup Restart from Faults
- Voltage Mode Control
- Active Low Enable
- Thermal Shutdown Protection at 145°C
- 8-Pin, 3-mm × 3-mm SON with Ground Connection to Thermal Pad
- APPLICATIONS
- Point of Load
- Telecommunications
- DC to DC Modules
- Set Top Boxes
PowerPAD Is a trademark of Texas Instruments.
Predictive Gate Drive Is a trademark of Texas Instruments.
The TPS40040 and TPS40041 dc-to-dc controllers are designed to operate from a 2.25-V to 5.5-V input source. To reduce the number of external components, several operating parameters are fixed internally; namely, frequency, soft start time, and short circuit protection (SCP) levels. For example, the operating frequencies of TPS40040/1 are 300 kHz/600 kHz, respectively.
One of three short circuit threshold levels may be selected by the addition of an external resistor from the COMP pin to circuit ground. During power on, and before the internal soft start commands the output voltage to rise, the TPS40040/1 enters a calibration cycle, measures the current out of the COMP pin, and selects an internal SCP threshold voltage. At the end of the 1.6-ms calibration time, the output voltage is allowed to rise for a 4-ms soft start. During operation, the selected SCP threshold voltage is compared to the upper MOSFETs voltage drop during its ON time to determine whether there is an overload condition.
The packaging of the TPS40040/1 is unique in that the PowerPAD is used as an electrical ground connection as well as a thermal connection.
技术文档
类型 | 项目标题 | 下载最新的英语版本 | 日期 | |||
---|---|---|---|---|---|---|
* | 数据表 | Low Pin Count, Low VIN (2.5V to 5.5V Synchronous Buck DC-to-DC Controller 数据表 (Rev. D) | 2007年 12月 12日 | |||
模拟设计期刊 | 控制模式快速参考指南 (Rev. B) | PDF | HTML | 下载英文版本 (Rev.B) | PDF | HTML | 2023年 9月 5日 | |
选择指南 | 电源管理指南 2018 (Rev. K) | 2018年 7月 31日 | ||||
选择指南 | 电源管理指南 2018 (Rev. R) | 2018年 6月 25日 | ||||
选择指南 | DC/DC Buck Controller Solutions Selection Guide | 2018年 2月 6日 | ||||
应用手册 | Analysis and Design of Input Filter for DC-DC Circuit | 2017年 11月 27日 | ||||
更多文献资料 | Исходные проекты ll | 2011年 5月 13日 | ||||
EVM 用户指南 | Using the TPS40040-EVM-001 | 2007年 1月 29日 | ||||
用户指南 | A 5-V Input, 1.8-V Output, 6-A Synchronous Buck Converter | 2006年 4月 10日 |
设计和开发
如需其他信息或资源,请查看下方列表,点击标题即可进入详情页面。
TPS40040EVM-001 — 5V 输入、1.8V 输出、10A 同步降压评估模块
The TPS40040EVM-001 evaluation module (EVM) is a synchronous buck converter providing a fixed1.8 V output at up to 10 A from a 5 V input bus. The EVM is designed to start up from a single supply, so no additional bias voltage is required for startup. The module uses the TPS40040 (...)
TPS40041EVM-001 — TPS40041 5V 输入、1.8V 输出、6A 评估模块
The TPS40041EVM-001 evaluation module (EVM) is a synchronous buck converter providing a fixed1.8 V output at up to 6 A from a 5 V input bus or 3 A from a 3.3 V input. The EVM is designed to start up from a single supply, so no additional bias voltage is required for (...)
TPS40040 TINA-TI Average Reference Design (Rev. A)
TPS40040 Unencrypted PSpice Transient Model Package (Rev. A)
TPS40040/1 Unencrypted PSpice Average Model Package (Rev. A)
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封装 | 引脚数 | 下载 |
---|---|---|
VSON (DRB) | 8 | 了解详情 |
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