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Texas Instruments LM5160 | Demoboard TIDA-00689
LM5160A, LM5160 Wide Input 65-V, 2-A Synchronous Buck / Fly-Buck™ Converter
Overview
| Topology | Buck Converter |
| Input voltage | 10-60 V |
| Output 1 | 5 V / 1.5 A |
| IC revision | C |
Description
The LM516x device is a 65-V, 2-A synchronous stepdownconverter with integrated high-side and low-sideMOSFETs. The constant ON-time control schemerequires no loop compensation and supports highstep-down ratios with fast transient response. Aninternal feedback amplifier maintains ±1% outputvoltage regulation over the entire operatingtemperature range. The ON-time varies inversely withinput voltage resulting in nearly constant switchingfrequency. Peak and valley current limit circuitsprotect against overload conditions. The undervoltagelockout (EN/UVLO) circuit provides independentlyadjustable input undervoltage threshold andhysteresis. The LM5160 is programmed through theFPWM pin to operate in continuous conduction mode(CCM) from no load to full load or to automaticallyswitch to discontinuous conduction mode (DCM) atlight load for higher efficiency. Forced CCM operationsupports multiple output and isolated Fly-Buckapplications using a coupled inductor.
Features
Wide 4.5-V to 65-V Input Voltage Range
- Integrated High-Side and Low-Side Switches– No Schottky Diode Required
- 2-A Maximum Load Current
- Constant ON-Time Control– No External Loop Compensation– Fast Transient Response
- Selectable Forced CCM or DCM Operation
- CCM Option Supports Multi-Output Fly-Buck™
- Nearly Constant Switching Frequency
- Frequency Adjustable Up to 1 MHz
- Programmable Soft-Start Time
- Prebiased Start-Up
- Peak Current Limiting Protection
- Adjustable Input UVLO and Hysteresis
- ±1% Feedback Voltage Reference
- LM5160A Allows External VCC Bias
- Thermal Shutdown Protection
Typical applications
- IGBT Gate Drive Bias Supply
- Low-Power Isolated DC-DC (Fly-Buck)
- Telecom Primary and Secondary Side Bias
- E-Meter Power Line Communication
- Industrial Programmable Logic Controller
More information
Products
| Order Code | Datasheet | Simulation | Downloads | Product series | C | Tol. C | VR (V (DC)) | Size | Operating Temperature | DF (%) | RISO | Ceramic Type | L (mm) | W (mm) | H (mm) | Fl (mm) | Packaging | L (µH) | IR (A) | ISAT (A) | RDC (mΩ) | fres (MHz) | L1 (µH) | L2 (µH) | n | IR (A) | IR 2 (A) | ISAT (A) | ISAT1 (A) | ISAT2 (A) | RDC1 typ (mΩ) | RDC2 typ (mΩ) | RDC1 max (mΩ) | RDC2 max (mΩ) | fres 1 (MHz) | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | 885012206034 | SPEC | 8 files | WCAP-CSGP MLCCs 16 V(DC) | 1 nF | ±10% | 16 | 0603 | -55 °C up to +125 °C | 3.5 | 10 GΩ | X7R Class II | 1.6 | 0.8 | 0.8 | 0.4 | 7" Tape & Reel | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | ||
| 885012206087 | SPEC | 8 files | WCAP-CSGP MLCCs 50 V(DC) | 4.7 nF | ±10% | 50 | 0603 | -55 °C up to +125 °C | 2.5 | 10 GΩ | X7R Class II | 1.6 | 0.8 | 0.8 | 0.4 | 7" Tape & Reel | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | ||
| 885012206040 | SPEC | 8 files | WCAP-CSGP MLCCs 16 V(DC) | 10 nF | ±10% | 16 | 0603 | -55 °C up to +125 °C | 3.5 | 10 GΩ | X7R Class II | 1.6 | 0.8 | 0.8 | 0.4 | 7" Tape & Reel | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | ||
| 885012206095 | SPEC | 8 files | WCAP-CSGP MLCCs 50 V(DC) | 100 nF | ±10% | 50 | 0603 | -55 °C up to +125 °C | 3 | 5 GΩ | X7R Class II | 1.6 | 0.8 | 0.8 | 0.4 | 7" Tape & Reel | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | ||
| 885012206048 | SPEC | 8 files | WCAP-CSGP MLCCs 16 V(DC) | 220 nF | ±10% | 16 | 0603 | -55 °C up to +125 °C | 5 | 2.3 GΩ | X7R Class II | 1.6 | 0.8 | 0.8 | 0.4 | 7" Tape & Reel | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | ||
| 885012207026 | SPEC | 8 files | WCAP-CSGP MLCCs 10 V(DC) | 10 µF | ±10% | 10 | 0805 | -55 °C up to +125 °C | 10 | 0.01 GΩ | X7R Class II | 2 | 1.25 | 1.25 | 0.5 | 7" Tape & Reel | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | ||
 | 74404024100 | SPEC | 8 files | WE-LQS SMT Power Inductor | – | – | – | 2512 | -40 °C up to +125 °C | – | – | – | 2.5 | 2 | 1.2 | – | – | 10 | 0.65 | 0.8 | 430 | – | – | – | – | – | – | 0.85 | – | – | – | – | – | – | – | ||
 | 74489430220 | SPEC | 7 files | WE-TDC SMT Shielded Coupled Inductor | – | – | 80 | 8018 | -40 °C up to +125 °C | – | – | – | 8 | 8 | 1.8 | – | – | 22 | 0.7 | 1.1 | – | 17 | 22 | 22 | 1:1 | 0.7 | 0.7 | 1.1 | 1.1 | 1.1 | 435 | 435 | 480 | 480 | 17 |
| Order Code | Datasheet | Simulation | |
|---|---|---|---|
| 885012206034 | SPEC | |
| 885012206087 | SPEC | |
| 885012206040 | SPEC | |
| 885012206095 | SPEC | |
| 885012206048 | SPEC | |
| 885012207026 | SPEC | |
| 74404024100 | SPEC | |
| 74489430220 | SPEC |
| Samples |
|---|
| Order Code | Datasheet | Simulation | Downloads | Product series | C | Tol. C | VR (V (DC)) | Size | Operating Temperature | DF (%) | RISO | Ceramic Type | L (mm) | W (mm) | H (mm) | Fl (mm) | Packaging | L (µH) | IR (A) | ISAT (A) | RDC (mΩ) | fres (MHz) | L1 (µH) | L2 (µH) | n | IR (A) | IR 2 (A) | ISAT (A) | ISAT1 (A) | ISAT2 (A) | RDC1 typ (mΩ) | RDC2 typ (mΩ) | RDC1 max (mΩ) | RDC2 max (mΩ) | fres 1 (MHz) | Samples |
|---|