計算工具
LM5118QUICK-CALC — LM5118/LM25118 Quick Start Component Calculator
Quick Start Component Calculator for LM5118/LM25118 devices
LM5118
- Ultra-Wide Input Voltage Range From 3 V to 75 V
- Emulated Peak Current Mode Control
- Smooth Transition Between Step-Down and Step-Up Modes
- Switching Frequency Programmable to 500 KHz
- Oscillator Synchronization Capability
- Internal High Voltage Bias Regulator
- Integrated High and Low-Side Gate Drivers
- Programmable Soft-Start Time
- Ultra-Low Shutdown Current
- Enable Input Wide Bandwidth Error Amplifier
- 1.5% Feedback Reference Accuracy
- Thermal Shutdown
- Package: 20-Pin HTSSOP (Exposed Pad)
- Create a Custom Design Using the LM5118 With the WEBENCH® Power Designer
The LM5118 wide voltage range Buck-Boost switching regulator controller features all of the functions necessary to implement a high-performance, cost-efficient Buck-Boost regulator using a minimum of external components. The Buck-Boost topology maintains output voltage regulation when the input voltage is either less than or greater than the output voltage, making it especially suitable for automotive applications. The LM5118 operates as a buck regulator while the input voltage is sufficiently greater than the regulated output voltage and gradually transitions to the buck-boost mode as the input voltage approaches the output. This dual-mode approach maintains regulation over a wide range of input voltages with optimal conversion efficiency in the buck mode and a glitch-free output during mode transitions. This easy-to-use controller includes drivers for the high-side buck MOSFET and the low-side boost MOSFET. The regulators control method is based upon current mode control using an emulated current ramp. Emulated current mode control reduces noise sensitivity of the pulse-width modulation circuit, allowing reliable control of the very small duty cycles necessary in high input voltage applications. Additional protection features include current limit, thermal shutdown and an enable input. The device is available in a power-enhanced, 20-pin HTSSOP package featuring an exposed die attach pad to aid thermal dissipation.
技術文件
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檢視所有 8 | 類型 | 標題 | 日期 | ||
|---|---|---|---|---|
| * | Data sheet | LM5118 Wide Voltage Range Buck-Boost Controller datasheet (Rev. J) | PDF | HTML | 2017年 6月 30日 |
| White paper | Valuing wide VIN, low EMI synchronous buck circuits for cost-driven, demanding a (Rev. A) | 2019年 4月 10日 | ||
| Technical article | Learn how to keep your car battery steady and running longer | PDF | HTML | 2017年 3月 28日 | |
| Analog Design Journal | Reduce buck-converter EMI and voltage stress by minimizing inductive parasitics | 2016年 7月 21日 | ||
| Application note | Maintaining Output Voltage Regulation During Automotive Cold-Crank with LM5118 | 2015年 7月 27日 | ||
| EVM User's guide | AN-1819 LM5118 Evaluation Board (Rev. B) | 2014年 1月 17日 | ||
| White paper | Wide VIN power management ICs simplify white paper (Rev. A) | 2013年 9月 19日 | ||
| User guide | AN-2178 LM5118 Four Switch Conversion (Rev. E) | 2013年 5月 6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
LM5118EVAL — 適用於 LM5118 寬輸入電壓降壓-升壓控制器的評估板
The LM5118 evaluation board is designed to provide the design engineer with a fully functional, Emulated Current Mode Control, buck-boost power converter to evaluate the LM5118 controller IC. The evaluation board provides a 12V output with 3A of output current capability. The evaluation board's (...)
使用指南: PDF
開發板
PMLKBUCKBOOSTEVM — 使用 LM5118 的 TI-PMLK 降壓/升壓實驗電路板
The BuckBoost Experiments Board is one board as part of the Texas Instruments Power Management Lab Kit (TI-PMLK) Series. The BuckBoost Experiments Board uses the LM5118 IC. The BuckBoost Experiments Board has an accompanying book that steps individuals through several experiments to (...)
使用指南: PDF
開發板
PMLKBUCKBOOSTEVMB — 使用 LM5118 的 TI-PMLK 降壓/升壓實驗電路板，含 TI-PMLK 降壓/升壓實驗手冊
The BuckBoost Experiments Board is one board as part of the Texas Instruments Power Management Lab Kit (TI-PMLK) Series. The BuckBoost Experiments Board uses the LM5118 IC. The box that is shipped will contain the TI-PMLKBUCKBOOSTEVM Hardware along with a bound version of the BuckBoost (...)
使用指南: PDF
參考設計
TIDA-01040 — 適合高電流應用的電池測試器參考設計
Li-Ion battery formation and electrical testing require accurate voltage and current control, usually to better than ±0.05% over the specified temperature range. This reference design proposes a solution for high-current (up to 50 A) battery tester applications supporting input (bus) (...)
參考設計
TIDA-01041 — 適合多相高精密度 0.5 至 100A 電池化成作業的電池測試器參考設計
This reference design provides a multi-phase solution for a wide range of current battery test applications. Leveraging the dual phase buck/boost controller LM5170's daisy chain configuration gives the design the ability to achieve 100A charging/discharging rates. Utilizing high accuracy constant (...)
參考設計
TIDA-01042 — 適合 50-A、100-A 及 200-A 應用的模組化電池測試器參考設計
This reference design provides a modular battery test solution allowing users to have the flexibility to test batteries at different current levels with one design. This design leverages the TIDA-01041 reference design by providing two 100-A battery testers that can work independently or be (...)
參考設計
TIDA-010086 — Digital control cost-optimized 10-A battery formation and test reference design
This reference design provides a cost-effective solution for battery formation and test applications. This design uses the C2000™ real-time control MCU for high-resolution pulse-width modulation (PWM) generation, and constant-current (CC) and constant-voltage (CV)
control loops. It efficiently (...)
control loops. It efficiently (...)
參考設計
PMP15035 — 1000-W、雙向 12-V 至 12-V 轉換器參考設計
This reference design is a dual-channel, bidirectional converter suitable for 12-V to 12-V, dual-battery system, automotive applications. This reference design has a wide input range (3 V to 40 V) and could give full load (1kW) in the input voltage from 9V to 18V by using two LM5170-Q1 (...)
參考設計
PMP10681 — 針對汽車冷啟動最佳化之 3-42 Vin、3 A 下為 5 V 的降壓升壓參考設計
This is a modified LM5118 2 switch buck-boost single inductor evaluation module (EVM) optimized to operate through automitive transients such as cold-crank. It is designed to provide 15W (5V, 3A) of output power with an input voltage range of 3V to 42V.
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| HTSSOP (PWP) | 20 | 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