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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 | Status | 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| WCAP-CSGP MLCCs 16 V(DC), 1 nF, ±10% | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-CSGP MLCCs 16 V(DC) | Capacitance1 nF | Capacitance±10% | Rated Voltage16 V (DC) | Size0603 | Operating Temperature -55 °C up to +125 °C | Dissipation Factor3.5 % | Insulation Resistance10 GΩ | Ceramic TypeX7R Class II | Length1.6 mm | Width0.8 mm | Height0.8 mm | Pad Dimension0.4 mm | Packaging7" Tape & Reel | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | |||||
| WCAP-CSGP MLCCs 50 V(DC), 4.7 nF, ±10% | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-CSGP MLCCs 50 V(DC) | Capacitance4.7 nF | Capacitance±10% | Rated Voltage50 V (DC) | Size0603 | Operating Temperature -55 °C up to +125 °C | Dissipation Factor2.5 % | Insulation Resistance10 GΩ | Ceramic TypeX7R Class II | Length1.6 mm | Width0.8 mm | Height0.8 mm | Pad Dimension0.4 mm | Packaging7" Tape & Reel | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | |||||
| WCAP-CSGP MLCCs 16 V(DC), 10 nF, ±10% | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-CSGP MLCCs 16 V(DC) | Capacitance10 nF | Capacitance±10% | Rated Voltage16 V (DC) | Size0603 | Operating Temperature -55 °C up to +125 °C | Dissipation Factor3.5 % | Insulation Resistance10 GΩ | Ceramic TypeX7R Class II | Length1.6 mm | Width0.8 mm | Height0.8 mm | Pad Dimension0.4 mm | Packaging7" Tape & Reel | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | |||||
| WCAP-CSGP MLCCs 50 V(DC), 100 nF, ±10% | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-CSGP MLCCs 50 V(DC) | Capacitance100 nF | Capacitance±10% | Rated Voltage50 V (DC) | Size0603 | Operating Temperature -55 °C up to +125 °C | Dissipation Factor3 % | Insulation Resistance5 GΩ | Ceramic TypeX7R Class II | Length1.6 mm | Width0.8 mm | Height0.8 mm | Pad Dimension0.4 mm | Packaging7" Tape & Reel | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | |||||
| WCAP-CSGP MLCCs 16 V(DC), 220 nF, ±10% | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-CSGP MLCCs 16 V(DC) | Capacitance220 nF | Capacitance±10% | Rated Voltage16 V (DC) | Size0603 | Operating Temperature -55 °C up to +125 °C | Dissipation Factor5 % | Insulation Resistance2.3 GΩ | Ceramic TypeX7R Class II | Length1.6 mm | Width0.8 mm | Height0.8 mm | Pad Dimension0.4 mm | Packaging7" Tape & Reel | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | |||||
| WCAP-CSGP MLCCs 10 V(DC), 10 µF, ±10% | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-CSGP MLCCs 10 V(DC) | Capacitance10 µF | Capacitance±10% | Rated Voltage10 V (DC) | Size0805 | Operating Temperature -55 °C up to +125 °C | Dissipation Factor10 % | Insulation Resistance0.01 GΩ | Ceramic TypeX7R Class II | Length2 mm | Width1.25 mm | Height1.25 mm | Pad Dimension0.5 mm | Packaging7" Tape & Reel | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | |||||
 | WE-LQS SMT Power Inductor, –, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-LQS SMT Power Inductor | – | – | – | Size2512 | Operating Temperature -40 °C up to +125 °C | – | – | – | Length2.5 mm | Width2 mm | Height1.2 mm | – | – | Inductance10 µH | Rated Current0.65 A | Saturation Current0.8 A | DC Resistance430 mΩ | Self Resonant Frequency30 MHz | – | – | – | – | – | Saturation Current0.85 A | – | – | – | – | – | – | – | ||||
 | WE-TDC SMT Shielded Coupled Inductor, –, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-TDC SMT Shielded Coupled Inductor | – | – | Rated Voltage80 V (DC) | Size8018 | Operating Temperature -40 °C up to +125 °C | – | – | – | Length8 mm | Width8 mm | Height1.8 mm | – | – | Inductance22 µH | Rated Current0.7 A | Saturation Current1.1 A | – | Self Resonant Frequency17 MHz | Inductance 122 µH | Inductance 222 µH | Turns Ratio1:1 | Rated Current0.7 A | Rated Current 20.7 A | Saturation Current1.1 A | Saturation Current 11.1 A | Saturation Current 21.1 A | DC Resistance 1435 mΩ | DC Resistance 2435 mΩ | DC Resistance 1480 mΩ | DC Resistance 2480 mΩ | Self Resonant Frequency [1]17 MHz |