設計工具
PMUX-SWITCHOVER-CALC — Calculate fast switchover parameters for power mux devices
Calculate fast switchover parameters for power mux devices
TPS2121
- Wide operating range: 2.8 V to 22 V
- Absolute maximum input voltage of 24 V
- Low RON resistance:
- TPS2120: 62 mΩ (typical)
- TPS2121: 56 mΩ (typical)
- Adjustable overvoltage supervisor (OVx):
- Accuracy < ±5%
- Adjustable priority supervisor (PR1):
- Accuracy < ±5%
- TPS2121 Supports external voltage reference (CP2) with an accuracy of <1%
- Output current limit (ILM):
- TPS2120: 1 A – 3 A
- TPS2121: 1 A – 4.5 A
- Channel status indication (ST)
- Adjustable input settling time (SS)
- Adjustable output soft start time (SS)
- TPS2121 Fast output switchover (tSW): 5 µs (typical)
- Low Iq from enabled input: 200 µA (typical)
- Low Iq from disabled input: 10 µA (Typical)
- Manual input source selection (OVx)
- Over temperature protection (OTP)
The TPS212x devices are Dual-Input, Single-Output (DISO) Power Multiplexer (MUX) that are well suited for a variety of systems having multiple power sources. The devices will Automatically Detect, Select, and Seamlessly Transition between available inputs.
Priority can be automatically given to the highest input voltage or manually assigned to a lower voltage input to support both ORing and Source Selection operations. A priority voltage supervisor is used to select an input source.
An Ideal Diode operation is used to seamlessly transition between input sources. During switchover, the voltage drop is controlled to block reverse current before it happens and provide uninterrupted power to the load with minimal hold-up capacitance.
Current limiting is used during startup and switchover to protect against overcurrent events, and also protects the device during normal operation. The output current limit can be adjusted with a single external resistor.
The TPS212x devices are available in WCSP and small VQFN-HR package options characterized for operation for a temperature range of –40°C to 125°C.
技術文件
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檢視所有 5 | 類型 | 標題 | 日期 | ||
|---|---|---|---|---|
| * | Data sheet | TPS212x 2.8-V to 22-V Priority Power MUX with Seamless Switchover datasheet (Rev. F) | 2020年 8月 28日 | |
| Application note | Design Example to Implement Automatic Switchover for Backup Power Using TPS2121 | PDF | HTML | 2023年 2月 24日 | |
| Application note | Basics of Power MUX (Rev. A) | PDF | HTML | 2020年 10月 20日 | |
| E-book | 11 Ways to Protect Your Power Path | 2019年 7月 3日 | ||
| EVM User's guide | TPS212x Evaluation Module User's Guide (Rev. A) | 2019年 1月 15日 |
設計與開發
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開發板
TPS2121EVM-023 — 適合優先功率多工器應用的 TPS2121 評估模組
The TPS212x EVM is an evaluation module for TI's TPS212x family of two-input, one-output power multiplexers. This device automatically detects, selects, and seamlessly transitions between two power supplies, each operating from 2.7 V to 22 V. The TPS2121 device, the VSON hot-rod package, can (...)
使用指南: PDF
模擬型號
TPS2121 Unencrypted PSpice Transient Model Package (Rev. A)
SLVMCO8A.ZIP (133 KB) - PSpice Model
模擬工具
PSPICE-FOR-TI — PSpice® for TI 設計與模擬工具
PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
參考設計
TIDA-010046 — 配備 IEEE802.3at Type-1 (≤ 12.95 W) PoE-PD 且符合 EMC 規範的 10/100-Mbps 乙太網路 PHY 參考設計
此參考設計使用低功耗乙太網路實體層 (PHY) DP83825 最佳化爲 10 至 100 Mbps，支援超過 CAT5e 電纜的 150 公尺長範圍，超出了 100 公尺 (328 英尺) 的標準乙太網路距離限制。此設計包含乙太網路纜線供電，並使用 IEEE802.3at Type-1 (13 W) PoE-PD TPS23755 裝置進行數據通訊，而此裝置具有整合式一次側穩壓返馳 DC/DC 控制器。此參考設計預先符合輻射放射、ESD 及 EFT 的測試規範。
參考設計
PMP40937 — 4s 電池充電器參考設計
This reference design is for 4-cell battery charging applications such as vacuum robot or robotic lawn mower, etc. It employs the buck battery charger BQ25672 with a wide input and output range for 1-4 cell battery charging. External ship FET is introduced to minimize the battery leakage current (...)
Test report: PDF
參考設計
TIDA-010070 — 適用於低電壓伺服驅動的受保護 DC 匯流排輸入電源和控制電源供應參考設計
This reference design uses an ORing controller, the LM5050-1 to provide protection against reverse polarity and reverse current. In conjunction, the LM5069 hot swap controller is used for overcurrent, over voltage, under voltage protection, and inrush current limitation. The design also features (...)
參考設計
TIDA-010008 — 適合於電網應用之瞬態保護的平箝制 TVS 架構參考設計
This reference design features multiple approaches for protecting AC or DC analog input, DC analog output, AC or DC binary input, digital output with a high side or low side driver, LCD bias supply, USB interfaces (power and data) and onboard power supplies with 24, 12 or 5V input used in (...)
參考設計
TIDA-010034 — IEEE802.3at Type-1 PoE 和 12V 適配器輸入到 IP 網路攝影機的負載點參考設計
Power over Ethernet (PoE) enables power to be delivered over the same ethernet cable as data with no danger of cross-talk, interference, or corruption of the data streams. This reference design showcases end-to-end power tree for an IP network camera powered using PoE or 12-V adapter based on the (...)
參考設計
TIDA-01638 — 適用於備用電源的無縫切換參考設計
The TIDA-01638 referencedesign showcases Power MUXing with redundant power. If one power source fails, the system needs to switchover to a backup power source and provide an uninterrupted source of power to downstream loads. Therefore, power redundancy ensures that if one power supply were to fail, (...)
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| VQFN-HR (RUX) | 12 | 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
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。