計算工具
SLVC780 — Design Tool for Output Voltage Adjustment Using a DAC
Calculator tool to adjust the power supply's output voltage with an analog input voltage
TPS62148
- Output voltage accuracy ± 1% over specified TJ range (PWM mode)
- Input voltage range: 3 V to 17 V
- Quiescent current 18-µA typical
- Output voltage from 0.8 V to 12 V
- Adjustable soft start
- Forced PWM or PWM/PFM operation
- Switching frequency of 1.25 MHz or 2.5 MHz in forced PWM
- Precise ENABLE input allows
- User-defined undervoltage lockout
- Exact sequencing
- 100% duty cycle mode
- Automatic efficiency enhancement AEE
- DCS-Control topology
- Active output discharge (TPS62148)
- HICCUP overcurrent protection (TPS62147)
- Power-good output
- Available in 2-mm × 3-mm VQFN package
The TPS62147 and TPS62148 are high efficiency and easy-to-use synchronous step-down DC/DC converters, based on the DCS-Control Topology. The wide input voltage range of 3-V to 17-V make the devices suitable for multi-cell Li-Ion as well as 12-V intermediate supply rails. The devices provide 2-A continuous output current. The devices automatically enter Power Save Mode at light loads to maintain high efficiency across the whole load range. With that, the devices are well suited for applications that require connected standby performance, like industrial PC and video surveillance. With the MODE pin set to low, the switching frequency is adapted automatically based on the output current and also on input and output voltage. This technique is called Automatic Efficiency Enhancement (AEE) and maintains high conversion efficiency over the whole operation range. TPS62147, TPS62148 provide a 1% output voltage accuracy in PWM mode and therefore enable the design of a power supply with high output voltage accuracy. The FSEL pin allows to set a switching frequency in forced PWM mode of 1.25 MHz or 2.5 MHz, respectively.
The typical quiescent current is 18 µA. In shutdown mode, the current is typically 1 µA.
The devices are available as an adjustable version, packaged in a 3-mm × 2-mm VQFN package.
您可能會感興趣的類似產品
引腳對引腳且具備與所比較裝置相同的功能
技術文件
找不到結果。請清除您的搜尋條件，然後再試一次。
檢視所有 7 | 重要文件 | 類型 | 標題 | 格式選項 | 日期 |
|---|---|---|---|---|
| * | Data sheet | TPS62147, TPS62148 High-Accuracy, 3-V to 17-V, 2-A Step-Down Converter with DCS-Control datasheet (Rev. B) | PDF | HTML | 2023年 2月 2日 |
| Application note | Step-Dwn (Buck) Convrtr Pwer Solutions for Programmable Logic Controller Systems (Rev. A) | PDF | HTML | 2021年 7月 26日 | |
| Selection guide | Buck Converter Quick Reference Guide (Rev. B) | 2021年 4月 8日 | ||
| Analog Design Journal | Methods of output-voltage adjustment for DC/DC converters | 2019年 6月 14日 | ||
| Application note | Solve Point-of-Load Power Design Challenges: Single Board Computer Applications | 2018年 8月 24日 | ||
| Analog Design Journal | Understanding 100% mode in low-power DC/DC converters | 2018年 6月 22日 | ||
| Technical article | Output accuracy varies with temperature – 1% is not always 1% | PDF | HTML | 2018年 5月 2日 |
設計與開發
如需其他條款或必要資源，請按一下下方的任何標題以檢視詳細頁面 (如有)。
開發板
TPS62148EVM-034 — 具有 fSEL 功能的 17-V 輸入、2-A 輸出、降壓轉換器評估模組
TPS62148EVM-034 的設計旨在幫助使用者輕鬆評估及測試 TPS62148 DC/DC 轉換器的運作及功能。EVM 可在高達 2A 的輸出電流下，將 3V 至 17V 的輸入電壓轉換為 3.3V 穩壓輸出電壓。TPS62148 以 1MHz 的額定切換頻率運作，並採用小型 2.0 x 3.0mm² 的 QFN 封裝。
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| VQFN-HR (RGX) | 11 | 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
- 進行中的可靠性監測
內含資訊：
- 晶圓廠位置
- 組裝地點
建議產品可能具有與此 TI 產品相關的參數、評估模組或參考設計。