2.95V to 6V Input, 2A Synchronous Step-Down SWIFT™ Converter
Product details
Parameters
Package | Pins | Size
Features
- Two, 30-mΩ (typical) MOSFETs for high-efficiency at 2-A loads
- Switching frequency: 200 kHz to 2 MHz
- Voltage reference over temperature: 0.8 V ±1%
- Synchronizes to external clock
- Adjustable soft start/sequencing
- UV and OV power-good output
- Low operating and shutdown quiescent current
- Safe start-up into prebiased output
- Cycle-by-cycle current limit, thermal and frequency foldback protection
- Operating junction temperature range: –40°C to 150°C
- Thermally-enhanced 3-mm × 3-mm 16-pin WQFN package
- Create a custom design using the TPS54218 with the WEBENCH® Power Designer
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Description
TheTPS54218 device is a full-featured, 6-V, 2-A, synchronous, step-down current-mode converter with two integrated MOSFETs.
The TPS54218 device enables small designs by integrating the MOSFETs, implementing current mode control to reduce external component count, reducing inductor size by enabling up to 2-MHz switching frequency, and minimizing the device footprint with a small, 3-mm × 3-mm, thermally-enhanced QFN package.
The TPS54218 device provides accurate regulation for a variety of loads with an accurate ±1% voltage reference (VREF) over temperature.
Efficiency is maximized through the integrated 30-mΩ MOSFETs and a 350-µA typical supply current. Using the EN pin, shutdown supply current is reduced to 2 µA by entering a shutdown mode.
Undervoltage lockout is internally set at 2.6 V, but can be increased by programming the threshold with a resistor network on the enable pin. The output voltage startup ramp is controlled by the soft-start pin. An open-drain power-good signal indicates the output is within 93% to 107% of its nominal voltage. Frequency foldback and thermal shutdown protects the device during an overcurrent condition.
For more SWIFT™ documentation, see the TI website at www.ti.com/swift.
Technical documentation
Design & development
For additional terms or required resources, click any title below to view the detail page where available.Hardware development
Description
Design tools & simulation
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
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Reference designs
Design files
-
download TIDA-010057 BOM.pdf (157KB) -
download TIDA-010057 Assembly Drawing.pdf (285KB) -
download TIDA-010057 PCB.pdf (3590KB) -
download TIDA-010057 Gerber.zip (3652KB) -
download TIDA-010057 CAD Files (Rev. A).zip (6926KB)
Design files
-
download PMP9166 BOM.pdf (78KB) -
download PMP9166 PCB.pdf (140KB) -
download PMP9166 Gerber.zip (158KB)
CAD/CAE symbols
Package | Pins | Download |
---|---|---|
WQFN (RTE) | 16 | View options |
Ordering & quality
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- MTBF/FIT estimates
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- Qualification summary
- Ongoing reliability monitoring
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Support & training
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