LM5160A Wide Input 65V, 2A Synchronous Buck / Fly-Buck™ Converter
Product details
Parameters
Package | Pins | Size
Features
- Wide 4.5-V to 65-V Input Voltage Range
- Integrated High-Side and Low-Side Switches
- No External Schottky Diode Required
- 2-A Maximum Load Current
- Adaptive Constant On-Time Control
- No External Loop Compensation
- Fast Transient Response
- Selectable Forced PWM or DCM Operation
- FPWM Supports Multi-Output Fly-Buck™
- Nearly Constant Switching Frequency
- Resistor Adjustable up to 1 MHz
- Programmable Soft-Start Time
- Prebiased Start-Up
- ±1% Feedback Voltage Reference
- LM5160A Allows External VCC Bias
- Inherent Protection Features for Robust Design
- Peak Current Limiting Protection
- Adjustable Input UVLO and Hysteresis
- VCC and Gate Drive UVLO Protection
- Thermal Shutdown Protection With Hysteresis
- Create a Custom Design Using the LM5160A With the WEBENCH® Power Designer
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Description
The LM5160/A is a 65-V, 2-A synchronous step-down converter with integrated high-side and low-side MOSFETs. The adaptive constant on-time control scheme requires no loop compensation and supports high step-down ratios with fast transient response. An internal feedback amplifier maintains ±1% output voltage regulation over the entire operating temperature range. The on-time varies inversely with input voltage resulting in nearly constant switching frequency.
Peak and valley current limit circuits protect against overload conditions. The undervoltage lockout (EN/UVLO) circuit provides independently adjustable input undervoltage threshold and hysteresis. The LM5160/A is programmed through the FPWM pin to operate in continuous conduction mode (CCM) from no load to full load or to automatically switch to discontinuous conduction mode (DCM) at light load for higher efficiency. Forced CCM operation supports multiple-output and isolated Fly-Buck applications using a coupled inductor.
The LM5160A shares the same features and pin configuration as the LM5160. An external bias supply can be connected to the VCC pin of the LM5160A in Buck and Fly-Buck applications. This additional capability lowers IC power dissipation and improves efficiency at high input voltages.
Technical documentation
Design & development
For additional terms or required resources, click any title below to view the detail page where available.Hardware development
Description
The LM5160DNTBKEVM evaluation board provides a fully functional buck regulator, employing the constant on-time (COT) operating principle. This evaluation board provides a 5V output over an input range of 10V to 60V. The circuit delivers load currents to 1.5A. The application schematic is setup up to (...)
Features
- 10V to 60V input voltage range
- 5V target output voltage
- Delivers up to 1.5A output load current
- FET place holder for EN/UVLO shutdown feature
- PWM mode pin feature to choose between CCM and DCM
Description
The LM5160DNTFBK evaluation module is designed to operate from a 24V nominal bus with an input voltage range of 18V to 32V. It is capable of supplying 12V/400 mA to the load at the isolated output. The nominal switching frequency is 300kHz. The high side and low side MOSFETs are integrated in the (...)
Features
- 18V to 32V input voltage range
- 8V target primary output voltage and 12V secondary isolated output
- Can deliver up to 400mA output secondary load with primary unloaded
- FPWM pin connected directly to Vcc
Design tools & simulation
Features
- Features isolated topologies like Fly-Buck™, Fly-Buck-Boost, DCM and CCM Flyback
- Capability to design up to 6 isolated outputs
- Recommends ICs for desired application design
- Incorporates loop compensation in designs
- Compares efficiency, external component count and transformer currents for every topology (...)
Features
- Determine output filter inductance and input and output filter capacitances
- Select components for soft-start, EN/UVLO resistors
- Optimize and choose the ripple injection circuit required for your application
- Determine the minimum input voltage available for a fixed output and switching frequency
Features
- Determine the maximum power handling capability of the part specific to the application
- Determine the appropriate transformer turns ratio, input and output filter capacitances
- Select components for soft-start, EN/UVLO resistors
Reference designs
Design files
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download TIDA-010055 BOM Files.zip (310KB) -
download TIDA-010055 Assembly Files.zip (827KB) -
download TIDA-010055 Layer Plots.zip (2674KB) -
download TIDA-010055 CAD Files.zip (9038KB) -
download TIDA-010055 Gerber.zip (1157KB)
Design files
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download TIDA-00440 BOM.pdf (68KB) -
download TIDA-00440 Assembly Files.zip (248KB) -
download TIDA-00440 PCB.zip (288KB) -
download TIDA-00440 CAD Files.zip (6588KB) -
download TIDA-00440 Gerber.zip (897KB)
Design files
Design files
-
download PMP10531 BOM.pdf (83KB) -
download PMP10531 PCB.pdf (833KB) -
download PMP10531 Gerber.zip (224KB)
Design files
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download PMP10532 BOM.pdf (340KB) -
download PMP10532 PCB.pdf (537KB) -
download PMP10532 Gerber.zip (189KB)
Design files
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download TIDA-00486 BOM.pdf (222KB) -
download TIDA-00486 Assembly Drawing.pdf (389KB) -
download TIDA-00486 Fabrication Drawing.pdf (444KB) -
download TIDA-00486 PCB.pdf (2185KB) -
download TIDA-00486 CAD Files.zip (1067KB) -
download TIDA-00486 Gerber.zip (1389KB)
Design files
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download TIDA-00485 BOM.pdf (222KB) -
download TIDA-00485 Assembly Drawing.pdf (439KB) -
download TIDA-00485 Fabrication Drawing.pdf (445KB) -
download TIDA-00485 PCB.pdf (2184KB) -
download TIDA-00485 CAD Files.zip (1042KB) -
download TIDA-00485 Gerber.zip (1386KB)
Design files
-
download TIDA-00199 BOM.pdf (61KB) -
download TIDA-00199 Assembly Drawing.pdf (148KB) -
download TIDA-00199 PCB.pdf (733KB) -
download TIDA-00199 CAD Files.zip (1352KB) -
download TIDA-00199 Gerber.zip (348KB)
Design files
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download PMP9415 BOM.pdf (172KB) -
download PMP9415 Gerber.zip (38KB)
Design files
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download PMP10572 BOM.pdf (101KB) -
download PMP10572 Gerber.zip (50KB)
CAD/CAE symbols
Package | Pins | Download |
---|---|---|
WSON (DNT) | 12 | View options |
Ordering & quality
- RoHS
- REACH
- Device marking
- Lead finish/Ball material
- MSL rating/Peak reflow
- MTBF/FIT estimates
- Material content
- Qualification summary
- Ongoing reliability monitoring
Recommended products may have parameters, evaluation modules or reference designs related to this TI product.
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