5.5V to 36V Input, 2A, 500kHz Step-Down Converter
Product details
Parameters
Package | Pins | Size
Features
- Wide Input Voltage Range: 5.5 V to 36 V
- Up to 2-A Continuous (3-A Peak) Output Current
- High Efficiency up to 95% Enabled by
110-mΩ Integrated MOSFET Switch - Wide Output Voltage Range: Adjustable Down to 1.22 V
with 1.5% Initial Accuracy - Internal Compensation Minimizes External Parts Count
- Fixed 500-kHz Switching Frequency for Small Filter Size
- Improved Line Regulation and Transient Response by
Input Voltage Feed Forward - System Protected by Over Current Limiting, Over Voltage
Protection and Thermal
Shutdown - –40°C to 125°C Operating Junction
Temperature Range - Available in Small 8-Pin SOIC Package
Description
The TPS5420 is a high-output-current PWM converter that integrates a low resistance high side N-channel MOSFET. Included on the substrate with the listed features is a high performance voltage error amplifier that provides tight voltage regulation accuracy under transient conditions; an undervoltage-lockout circuit to prevent start-up until the input voltage reaches 5.5 V; an internally set slow-start circuit to limit inrush currents; and a voltage feed-forward circuit to improve the transient response. Using the ENA pin, shutdown supply current is reduced to 18 µA typically. Other features include an active-high enable, overcurrent limiting, overvoltage protection and thermal shutdown. To reduce design complexity and external component count, the TPS5420 feedback loop is internally compensated.
The TPS5420 device is available in an easy to use 8-pin SOIC package. TI provides evaluation modules and the Designer software tool to aid in quickly achieving high-performance power supply designs to meet aggressive equipment development cycles.
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Technical documentation
= Top documentation for this product selected by TI
| Type | Title | Date | |
|---|---|---|---|
| * | Datasheet | 2-A Wide Input Range Step-Down Converter datasheet (Rev. E) | Sep. 05, 2013 |
| Technical articles | Minimize the impact of the MLCC shortage on your power application | Mar. 29, 2019 | |
| Selection guide | Power Management Guide 2018 (Rev. R) | Jun. 25, 2018 | |
| Application note | Power-supply design for high-speed ADCs (Rev. A) | May 18, 2015 | |
| Application note | Output Ripple Voltage for Buck Switching Regulator (Rev. A) | Oct. 13, 2014 | |
| More literature | Журнал по применению аналоговых компонентов 1 кв. 2010 | Sep. 23, 2010 | |
| Application note | Using the TPS5430 As An Inverting Buck Boost Converter (Rev. A) | Aug. 15, 2007 | |
| Application note | Using TPS5410/20/30/31/50 w/Aluminum/Ceramic Output Capacitors (Rev. C) | Mar. 21, 2007 | |
| User guide | TPS5420EVM-175 User's Guide | Apr. 05, 2006 |
Design & development
For additional terms or required resources, click any title below to view the detail page where available.Hardware development
TPS5420EVM-175
Description
The TPS5420EVM-175 evaluation module allows the designer to evaluate the TPS5420 SWIFT DC/DC converter optimized for small size. The input voltage range of this module is 10 V to 36 V and the output voltage is pre-set to 5 V. The output voltage can be easily adjusted by changing a (...)
Features
- Internally compensated for lower parts count
- 500 kHz switching frequency allows smaller filter components
- Low Rds(on) integrated MOSFET for greater than 90% efficiency
- 2% regulation accuracy
- Supported by SWIFT Designer software tool for quick and easy design
Design tools & simulation
SLVMAC0.ZIP (140 KB) - PSpice Model
SLVMAM0.ZIP (52 KB) - TINA-TI Spice Model
SLVMAM1.TSC (643 KB) - TINA-TI Reference Design
SLVMAM2.TSC (626 KB) - TINA-TI Reference Design
SLVMCU9.ZIP (6 KB) - PSpice Model
PSPICE-FOR-TI — PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
Features
- Leverages Cadence PSpice Technology
- Preinstalled library with a suite of digital models to enable worst-case timing analysis
- Dynamic updates ensure you have access to most current device models
- Optimized for simulation speed without loss of accuracy
- Supports simultaneous analysis of multiple products
- (...)
Reference designs
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Design files
-
download Parallel Redundancy Protocol Ethernet for Substation Automation BOM.pdf (135KB) -
download Parallel Redundancy Protocol Ethernet for Substation Automation Assembly Drawing.pdf (1192KB) -
download Parallel Redundancy Protocol Ethernet for Substation Automation Layer Plots.pdf (1366KB) -
download Parallel Redundancy Protocol Ethernet for Substation Automation CAD Files.zip (3014KB)
TIDEP0008 — Targeted for PROFINET slave communications, this development platform allows designers to implement PROFINET communications standards in a broad range of industrial automation equipment. It enables low foot print designs in applications such as industrial automation, factory automation or industrial (...)
TIDEP0002 — Targeted for PROFIBUS slave communications, this development platform allows designers to implement PROFIBUS communications standards in a broad range of industrial automation equipment. It enables low foot print designs in applications such as industrial automation, factory automation or industrial (...)
PMP4648 — This PMP4648 is a multi-output power supply in a Power over Ethernet application. A 12V adapter input is connected in OR-ing to the 12V output.
Design files
-
download PMP4648 BOM.pdf (34KB)
CAD/CAE symbols
| Package | Pins | Download |
|---|---|---|
| SOIC (D) | 8 | View options |
Ordering & quality
Information included:
- RoHS
- REACH
- Device marking
- Lead finish/Ball material
- MSL rating/Peak reflow
- MTBF/FIT estimates
- Material content
- Qualification summary
- Ongoing reliability monitoring
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