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Texas Instruments LM5149
80-V synchronous buck DC/DC controller with ultra-low IQ and integrated active EMI filter
Overview
| Topology | Buck Converter |
| Input voltage | 4-72 V |
| Output 1 | 3.3 V / 20 A |
| IC revision | A |
Description
The LM5149 is a 80-V, ultra-low IQ synchronous buck DC/DC controller for high-current, single-output applications. The controller uses a peak current-mode control architecture for easy loop compensation, fast transient response, and excellent load and line regulation. The LM5149 can be set up in interleaved dual-phase mode with accurate current sharing for high-current applications. The device can operate with VIN as low as 3.5 V, at nearly 100% duty cycle if needed.
Features
- Functional Safety-Capable– Documentation available to aid functional safetysystem design
- Two integrated EMI mitigation mechanisms– Active EMI Filter for enhanced EMIperformance at lower frequencies– Selectable dual random spread spectrum(DRSS) for enhanced EMI performance across
Typical applications
- Industrial transport
- Building automation
- Test and measurement
- Wireless infrastucture
More information
Products
| Order Code | Datasheet | Simulation | Downloads | Product series | L (µH) | IRP,40K (A) | ISAT,10% (A) | ISAT,30% (A) | RDC max. (mΩ) | fres (MHz) | Mount | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | 74437368022 | SPEC | 8 files | WE-LHMI SMT Power Inductor | 2.2 | 14.3 | 18.1 | 38.7 | 7 | 27 | SMT |
| Order Code | Datasheet | Simulation | |
|---|---|---|---|
| 74437368022 | SPEC |
| Samples |
|---|
| Order Code | Datasheet | Simulation | Downloads | Product series | L (µH) | IRP,40K (A) | ISAT,10% (A) | ISAT,30% (A) | RDC max. (mΩ) | fres (MHz) | Mount | Samples |
|---|