计算工具
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 MOSFET’s 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
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查看全部 8 | 类型 | 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 | 英语版 (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 | ||||
| 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，请点击以下任一标题进入详情页面查看（如有）。
评估板
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 (...)
用户指南: PDF
评估板
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 (...)
用户指南: PDF
仿真模型
TPS40040 TINA-TI Average Reference Design (Rev. A)
SLVJ009A.TSC (566 KB) - TINA-TI Reference Design
仿真模型
TPS40040 Unencrypted PSpice Transient Model Package (Rev. A)
SLVM032A.ZIP (67 KB) - PSpice Model
仿真模型
TPS40040/1 Unencrypted PSpice Average Model Package (Rev. A)
SLVJ008A.ZIP (108 KB) - PSpice Model
| 封装 | 引脚 | CAD 符号、封装和 3D 模型 |
|---|---|---|
| VSON (DRB) | 8 | Ultra Librarian |
订购和质量
包含信息：
- RoHS
- REACH
- 器件标识
- 引脚镀层/焊球材料
- MSL 等级/回流焊峰值温度
- MTBF/时基故障估算
- 材料成分
- 鉴定摘要
- 持续可靠性监测
包含信息：
- 制造厂地点
- 封装厂地点