Texas Instruments TPS513885 Synchronous Buck Converter
Texas Instruments TPS513885 Synchronous Buck Converter is a monolithic, 12A, synchronous buck converter with integrated MOSFETs that enable high efficiency. This device offers ease of use with minimum external component count for space-conscious power systems. The TPS513885 employs a D-CAP3 control mode that provides fast transient response and excellent load and line regulation with internal compensation. The ULQ extended battery life feature is extremely beneficial for long battery life in low-power operation. The large-duty operation dramatically improves the load transient performance when the input voltage is low.
The EN pin can be used to set Eco-mode or Out-of-Audio (OOA) mode for light-load operation. The Eco-mode maintains high efficiency during light load operation. The OOA mode keeps the switching frequency above the audible frequency with a minimum reduction in efficiency. The EN pin can be toggled dynamically, even when the converter is in operation. The Texas Instruments TPS513885 integrates a power-good indicator and provides an output discharge function. The TPS513885 provides complete protection, including OVP, UVP, OCP, OTP, and UVLO. The device is available in a 13-pin, 3.0mm × 4.0mm HotRod package, and the junction temperature is specified from –20°C to 125°C.
Features
- 5.5V to 24V input voltage range
- 5.15V output voltage
- Integrated 9.2mΩ and 4.5mΩ FETs
- Supports 12A continuous output current
- 90uA low quiescent current
- ± 1.0% output voltage accuracy (25°C)
- D-CAP3™ control mode architecture control for fast transient response
- Support POSCAP and all MLCC output capacitor
- Selectable Eco-mode and Out-of-Audio™ mode with dynamic change
- ULQ™ extended battery life during system standby
- Built-in output discharge function
- Integrated power-good indicator
- 560kHz and 920kHz selectable switching frequency
- Fixed 0.9ms soft-start time
- Large duty cycle operation
- Cycle-by-cycle overcurrent and negative overcurrent protection
- Latched output OV and UV protections
- Non-latched UVLO and OT protections
- –20°C to 125°C operating junction temperature
- 13-pin 3.0mm × 4.0mm HotRod™ VQFN package
Applications
- Notebook and PC computers
- Ultrabook, handheld tablet computers
- Industrial PC, single-board computers
- Non-military drone
- Distributed power systems
Simplified Schematic
Related Development Tool
Texas Instruments TPS513885EVM Evaluation Module
Offers a fully assembled and tested circuit for the TPS513885 step-down converter.