4.5V to 17V Input, 3A Synchronous Step-Down SWIFT™ Converter
Product details
Parameters
Package | Pins | Size
Features
- Integrated 57-mΩ / 50-mΩ MOSFETs
- Split Power Rail: 1.6 to 17 V on PVIN
- 200-kHz to 1.2-MHz Switching Frequency
- Synchronizes to External Clock
- 0.8-V Voltage Reference With ±1% Accuracy
- Low 2-µA Shutdown Quiescent Current
- Hiccup Overcurrent Protection
- Monotonic Start-Up into Prebiased Outputs
- –40°C to 150°C Operating Junction Temperature Range
- Pin-to-Pin Compatible With the TPS54620
- Adjustable Slow Start/Power Sequencing
- Power Good Output for Undervoltage and Overvoltage Monitoring
- Adjustable Input Undervoltage Lockout (UVLO)
- Supported by SwitcherPro™ Software Tool
- For SWIFT™ Documentation and SwitcherPro, Visit www.ti.com/swift
- Create a Custom Design Using the TPS54320 With the WEBENCH® Power Designer
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Description
The TPS54320 is a full-featured 17-V, 3-A synchronous step-down converter which is optimized for small designs through high efficiency and integrated high-side and low-side MOSFETs. Further space savings are achieved through current mode control, which reduces component count, and by selecting a high switching frequency, reducing footprint of the inductor.
The output voltage start-up ramp is controlled by the SS/TR pin which allows operation as either a stand-alone power supply or in tracking situations. Power sequencing is also possible by correctly configuring the enable and the open drain power good pins.
Cycle by cycle current limiting on the high-side FET protects the device in overload situations and is enhanced by a low-side sourcing current limit which prevents current runaway. Hiccup protection is triggered if the overcurrent condition has persisted for longer than the preset time. Thermal shutdown disables the part when die temperature exceeds thermal shutdown temperature. The TPS54320 is available in a 14-pin, 3.5-mm × 3.5-mm VQFN, thermally enhanced package.
Same functionality and pinout but is not an equivalent to the compared device:
Same functionality but is not pin-for-pin or parametrically equivalent to the compared device:
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 TPS54320EVM-513 is a fully assembled and tested circuit for evaluating the TPS54320 synchronous step-down SWIFT™ converter. The EVM converts a 8-V to 17-V input voltage to a regulated 3.3-V output voltage that delivers up to 3 A. The switching frequency is externally set at a nominal (...)
Features
- 8-V to 17-V input voltage range
- 94.9% efficiency (VIN = 8 V, IO = 0.9 A)
- 0.8V +/-1% voltage reference over temperature
- 2uA shutdown quiescent current
- 200-kHz to 1.2-MHz switching frequency
- Approximate circuit area of 227 sq. mm
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
- (...)
Reference designs
Design files
-
download PMP5547 BOM.pdf (22KB)
CAD/CAE symbols
Package | Pins | Download |
---|---|---|
VQFN (RHL) | 14 | 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.
Support & training
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