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Texas Instruments LM5149-Q1 | Demoboard LM5149-Q1EVM-2100
3.5-V to 80-V Synchronous Buck DC/DC Controller
Overview
| Topology | Buck Converter |
| Input voltage | 3.5-80 V |
| Output 1 | 5 V / 8 A |
| IC revision | A |
Description
The LM5149-Q1EVM-2100 evaluation module (EVM) is a synchronous buck DC/DC regulator that employssynchronous rectification to achieve high conversion efficiency in a small footprint. It operates over a wide input voltage range of V to 80 V, providing a regulated output of 5 V. The output voltage has better than 1% setpoint accuracy and are adjustable by modifying the feedback resistor values, permitting the user to customize the output voltage from 2.5 V to 12 V as needed.
Features
- Wide input voltage (wide VIN) range of 3.5 V to 80 V
- Spread spectrum modulation and active EMI filtering for lower EMI
- Wide duty cycle range with low tON(min) and tOFF(min)
- Ultra-low shutdown and no-load standby quiescent currents
- Multiphase capability
- Peak current-mode control loop architecture
- Integrated, high-current MOSFET gate drivers
- Cycle-by-cycle overcurrent protection with programmable hiccup
- Functional-safety capable
Typical applications
- High-current automotive electronic systems, Automotive HEV/EV powertrain systems
More information
Products
Order Code | Datasheet | Simulation | Downloads | Status | Product series | L(µH) | IRP,40K(A) | ISAT,30%(A) | RDC typ.(mΩ) | fres(MHz) | VOP(V) | Mount | ISAT,10%(A) | RDC max.(mΩ) | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | WE-LHMI SMT Power Inductor, 0.56 µH, 17.6 A | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-LHMI SMT Power Inductor | Inductance0.56 µH | Performance Rated Current17.6 A | Saturation Current @ 30%36.4 A | DC Resistance3.6 mΩ | Self Resonant Frequency85 MHz | Operating Voltage120 V | MountSMT | Saturation Current @ 10%19.9 A | DC Resistance4.2 mΩ | ||||
 | WE-MAPI SMT Power Inductor, 0.68 µH, 13.15 A | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-MAPI SMT Power Inductor | Inductance0.68 µH | Performance Rated Current13.15 A | Saturation Current @ 30%12.7 A | DC Resistance7.5 mΩ | Self Resonant Frequency75 MHz | Operating Voltage80 V | MountSMT | Saturation Current @ 10%5.8 A | DC Resistance9 mΩ |