LM5158-Q1
- AEC-Q100 qualified for automotive applications
- Temperature grade 1: –40°C to +125°C TA
- Functional Safety-Capable
- Suited for wide operating range for car battery applications
- 3.2-V to 60-V input operating range (65-V abs max)
- 83-V maximum output (85-V abs max)
- Minimum boost supply voltage of 1.5 V when BIAS ≥ 3.2 V
- Input transient protection up to 65 V
- Minimized battery drain
- Low shutdown current (IQ ≤ 2.6 µA)
- Low operating current (IQ ≤ 670 µA)
- Small solution size and low cost
- Maximum switching frequency up to 2.2 MHz
- 16-pin QFN package (3 mm × 3 mm) with wettable flanks
- Integrated error amplifier allows primary-side regulation without optocoupler (flyback)
- Minimized undershoot during cranking
- Accurate current limit (see the Device Comparison Table)
- EMI mitigation
- Selectable dual random spread spectrum
- Lead-less package
- Higher efficiency with low-power dissipation
- 133-mΩ RDSON switch
- Fast switching, small switching loss
- Avoid AM band interference and crosstalk
- Optional clock synchronization
- Dynamically programmable wide switching frequency from 100 kHz to 2.2 MHz
- Integrated protection features
- Constant current limiting over input voltage
- Selectable hiccup mode overload protection
- Programmable line UVLO
- OVP protection
- Thermal shutdown
- Accurate ±1% accuracy feedback reference
- Adjustable soft start
- PGOOD indicator
- Create a custom design using the LM5158x -Q1 with the WEBENCH Power Designer
The LM5158x -Q1 device is a wide input range, non-synchronous boost converter with an integrated 85-V, 3.26-A (LM5158 -Q1) or 85-V, 1.63-A (LM51581 -Q1) power switch.
The device can be used in boost, SEPIC, and flyback topologies. It can start up from a single-cell battery with a minimum of 3.2 V. It can operate with the input supply voltage as low as 1.5 V if the BIAS pin is greater than 3.2 V.
The BIAS pin operates up to 60 V (65-V absolute maximum) for automotive load dump. The switching frequency is dynamically programmable from 100 kHz to 2.2 MHz with an external resistor. Switching at 2.2 MHz minimizes AM band interference and allows for a small solution size and fast transient response. The device provides a selectable Dual Random Spread Spectrum to help reduce the EMI over a wide frequency range.
The device features an accurate peak current limit over the input voltage, which avoids overdesigning the power inductor. Low operating current and pulse-skipping operation improve efficiency at light loads.
The device has built-in protection features such as overvoltage protection, line UVLO, thermal shutdown, and selectable hiccup mode overload protection. Additional features include low shutdown IQ, programmable soft start, precision reference, a power-good indicator, and external clock synchronization.
技術文件
類型 | 標題 | 日期 | ||
---|---|---|---|---|
* | Data sheet | LM5158x-Q1 2.2-MHz Wide VIN 85-V Output Boost/SEPIC/Flyback Converter with Dual Random Spread Spectrum datasheet (Rev. A) | PDF | HTML | 2021年 10月 20日 |
White paper | Isolated Bias Power Supply Architecture for HEV and EV Traction Inverters | PDF | HTML | 2023年 10月 11日 | |
Application note | How to Implement the Soft Start in a Flyback | PDF | HTML | 2023年 7月 10日 | |
Application note | How to Design an Isolated Flyback Converter Using LM5157x/LM5158x (Rev. A) | PDF | HTML | 2023年 3月 16日 | |
Application note | Basic Calculation of a Coupled Inductor SEPIC Power Stage | PDF | HTML | 2023年 3月 13日 | |
Application note | How to Design a Boost Converter Using LM5157x, LM5158x | PDF | HTML | 2021年 11月 11日 | |
Functional safety information | LM5158x-Q1 Functional Safety FIT Rate, FMD and Pin FMA | PDF | HTML | 2021年 9月 20日 | |
Technical article | Lowering audible noise in automotive applications with TI’s DRSS technology | PDF | HTML | 2021年 3月 18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)。
LM5157EVM-SEPIC — 適用於 SEPIC 的 LM5157 評估模組
LM5157EVM-SEPIC 評估模組展示了 LM5157 作為寬輸入非同步 SEPIC 轉換器的功能和性能。標準配置的設計可在 4 V 至 32 V 輸入,在 2.1 MHz 下切換時,在最高 1 A 時提供 12 V 的穩壓輸出。
LM5158EVM-BST — LM5158-Q1 升壓轉換器評估模組
LM5158EVM-FLY — LM5158-Q1 返馳式轉換器評估模組
SNVR511 — LM5157 and LM5158 Quickstart Calculator for Boost Regulator Design
支援產品和硬體
產品
AC/DC 和 DC/DC 轉換器 (整合式 FET)
SNVR512 — LM5157 and LM5158 Quickstart Calculator for SEPIC Regulator Design
支援產品和硬體
產品
AC/DC 和 DC/DC 轉換器 (整合式 FET)
TIDA-020060 — 適用於 100/1000Base-T1 乙太網路應用的汽車數據線供電參考設計
封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
---|---|---|
WQFN (RTE) | 16 | 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