計算工具
TPS54040A
- 3.5 V to 42 V Input Voltage Range
- 200-mΩ High-Side MOSFET
- High Efficiency at Light Loads with a Pulse
Skipping Eco-mode™ - Tighter Enable Threshold than TPS54040
for More Accurate UVLO Voltage - Adjustable UVLO Voltage and Hysteresis
- 116 µA Operating Quiescent Current
- 1.3 µA Shutdown Current
- 100 kHz to 2.5 MHz Switching Frequency
- Synchronizes to External Clock
- Adjustable Slow Start/Sequencing
- UV and OV Power Good Output
- 0.8-V Internal Voltage Reference
- Available in MSOP-10 and VSON-10 Packages
- Supported by WEBENCH® and SwitcherPro™
Software Tool
The TPS54040A device is a 42 V, 0.5 A, step down regulator with an integrated high side MOSFET. Current mode control provides simple external compensation and flexible component selection. A low ripple pulse skip mode reduces the no load, regulated input supply current to 116 µA. Using the enable pin, shutdown supply current is nominally 1.3 µA when the enable pin is low.
Under voltage lockout is internally set at 2.5 V, but can be increased using the enable pin. The output voltage startup ramp is controlled by the slow start pin that can also be configured for sequencing or tracking. An open drain power good signal indicates when the output is within 94% to 107% of its nominal voltage.
A wide switching frequency range allows efficiency and external component size to be optimized. Frequency fold back and thermal shutdown protects the part during an overload condition.
技術文件
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檢視所有 8 | 類型 | 標題 | 日期 | ||
|---|---|---|---|---|
| * | Data sheet | TPS54040A 0.5-A, 42-V Step-Down DC-DC Converter With Eco-Mode™ datasheet (Rev. B) | PDF | HTML | 2016年 1月 15日 |
| White paper | Understanding Functional Safety FIT Base Failure Rate Estimates per IEC 62380 and SN 29500 (Rev. A) | PDF | HTML | 2024年 4月 30日 | |
| Selection guide | Power Management Guide 2018 (Rev. R) | 2018年 6月 25日 | ||
| Technical article | Designing an EMC-compliant interface to motor position encoders – Part 5 | PDF | HTML | 2015年 11月 10日 | |
| Application note | Design Considerations for DC-DC Converters in Fast-Input Slew Rate Applications | 2015年 3月 5日 | ||
| Application note | Methods to Improve Low Dropout Operation with the TPS54240 and TPS54260 (Rev. A) | 2013年 11月 6日 | ||
| Application note | Differences between the TPS54x40, TPS54x60 and the TPS54x40A, TPS54x60A | 2013年 4月 17日 | ||
| Application note | Level Shifting Control for an Inverting Buck-boost | 2012年 10月 10日 |
設計與開發
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開發板
TPS54040EVM-456 — TPS54040 42V 輸入、5V 輸出、0.5A 評估模組
The TPS54040EVM-456 evaluation module is designed to demonstrate the small printed-circuit-board areas that can be achieved when designing with the TPS54040 regulator. The TPS54040 dc/dc converter is designed to provide up to a 0.5-A output from an input voltage source of 3.5 V to 42 V. Rated (...)
使用指南: PDF
模擬型號
TPS54040A Unencrypted PSpice Average Model Package (Rev. A)
SLVM914A.ZIP (96 KB) - PSpice Model
參考設計
TIDA-00172 — 採用 EnDat 2.2 的位置編碼器介面參考設計
This reference design implements a hardware interface based on the HEIDENHAIN EnDat 2.2 standard for position or rotary encoders. The building blocks include the power supply for the encoder with innovative smart eFuse technology and robust half-duplex RS-485 transceivers including line termination (...)
參考設計
TIDA-00176 — 具高解析度位置內插法的正弦/餘弦編碼器介面參考設計
The TIDA-00176 reference design is an EMC compliant industrial interface to Sin/Cos position encoders. Applications include industrial drives, which require accurate speed and position control.
The design utilizes a 16-bit dual sample ADC with drop-in compatible 14- or 12-bit versions available, (...)
The design utilizes a 16-bit dual sample ADC with drop-in compatible 14- or 12-bit versions available, (...)
參考設計
TIDA-00175 — 5V BiSS 位置編碼器介面參考設計
This reference design implements a hardware interface based on the BiSS standard for position or rotary encoders. It supports both BiSS point-to-point and BiSS bus configurations. The building blocks include the power supply for a 5-V BiSS encoder with innovative smart eFuse technology and robust (...)
參考設計
TIDA-01574 — 適用於必須外接電源的自動調溫器的功率級參考設計
TIDA-01574 is a reference design for high-efficiency power stealing for smart thermostats and other building automation equipment. In general, power stealing enables to extend battery life of Wi-Fi enabled smart thermostats by drawing power from 24-V AC when the HVAC load is off. This (...)
參考設計
TIDA-00180 — 具有可編程輸出電壓和位置編碼器介面保護的電源
This reference design implements a universal power supply with programmable output voltage and innovative smart eFuse technology for use in a multi-standard position encoder interface module on an industrial drive. The eFuse provides inrush-current and over-current protection as well as user (...)
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| HVSSOP (DGQ) | 10 | Ultra Librarian |
| VSON (DRC) | 10 | Ultra Librarian |
訂購與品質
內含資訊：
- 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
內含資訊：
- 晶圓廠位置
- 組裝地點