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Texas Instruments LM5141-Q1 | Demoboard PMP15041
25W Automotive Start-Stop Reference Design Operating at 2.2 MHz
Overview
| Topology | Buck Converter |
| IC revision | E3 |
Description
Automotive 12V batteries typically operate in the range of 9V-16V. However this voltage can vary widely due to transient conditions such as cold crank and load dump. This reference design creates a well-regulated 25W (5V,5A) output, regardless of large input voltage transients, utilizing the LM5150-Q1 and LM5141-Q1. The LM5150-Q1 is implemented as a pre-boost, only switching when the input voltage is below 6.8V, and utilizes the inductor as a differential EMI filter when not switching. The LM5141-Q1 operates as a buck controller regulating the 5V output. Both devices switch at 2.2 MHz.
Features
- 2.8V minimum input voltage
- 25W output peak power (5V, 5A)
- 2.2MHz switching frequency
Typical applications
- Scanner
More information
Products
Order Code | Datasheet | Simulation | Downloads | Status | Product series | C | Tol. C | VR(V (DC)) | Size | Operating Temperature | Q(%) | DF(%) | RISO | Ceramic Type | L(mm) | W(mm) | H(mm) | Fl(mm) | Packaging | Endurance(h) | IRIPPLE(mA) | RESR(mΩ) | ILeak(µA) | Ø D(mm) | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| WCAP-CSGP MLCCs 50 V(DC), 100 pF, ±5% | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-CSGP MLCCs 50 V(DC) | Capacitance100 pF | Capacitance±5% | Rated Voltage50 V (DC) | Size0603 | Operating Temperature -55 °C up to +125 °C | Q-Factor1000 % | – | Insulation Resistance10 GΩ | Ceramic TypeNP0 Class I | Length1.6 mm | Width0.8 mm | Height0.8 mm | Pad Dimension0.4 mm | Packaging7" Tape & Reel | – | – | – | – | – | |||||
 | WCAP-PSLP Aluminum Polymer Capacitors, 82 µF, ±20% | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-PSLP Aluminum Polymer Capacitors | Capacitance82 µF | Capacitance±20% | Rated Voltage16 V (DC) | Size6.3 x 5.8 | Operating Temperature -55 °C up to +105 °C | – | Dissipation Factor8 % | – | – | Length5.8 mm | Width6.6 mm | – | – | Packaging15" Tape & Reel | Endurance 2000 | Ripple Current2200 mA | ESR35 mΩ | Leakage Current400 µA | Diameter6.3 mm |