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
設計與開發
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TPS54040EVM-456 — TPS54040 42V 輸入、5V 輸出、0.5A 評估模組
TPS54040A Unencrypted PSpice Average Model Package (Rev. A)
TIDA-00172 — 採用 EnDat 2.2 的位置編碼器介面參考設計
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
此設計採用 16 位元雙取樣 ADC,並提供直接投入相容的 14 或 12 位元版本,可最佳化性能與成本。TIDA-00176 也提供使用 SPI 和 QEP 介面輕鬆連接外部處理器的功能,並允許使用選用的嵌入式 ADC。為快速評估,提供 Piccolo F28069M MCU LaunchPad 的範例韌體,可透過 MCU 的 USB 虛擬 COM 埠輸出 Sin/Cos 編碼器的測量角度,解析度高達 28 位元。
TIDA-00175 — 5V BiSS 位置編碼器介面參考設計
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-00180 — 具有可編程輸出電壓和位置編碼器介面保護的電源
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
- 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