TI launches highest-density DC/DC buck converter
Published2016.12.08 11:08Provides Remote Voltage Sensing and Telemetry Functions
TI announced the launch of its industry-leading highest-density 18V input, 35A synchronous DC/DC buck converter product.
The new TPS546C23 power converter features fully differential remote voltage sensing and PMBus support, enabling telemetry capabilities. Additionally, this converter provides significantly superior density compared to competing products by integrating high-side and low-side MOSFETs in a compact footprint package.
Two converters can be stacked in parallel, enabling up to 70A drive for processors in space-constrained and power-intensive applications such as wired/wireless communications, enterprise and cloud computing, and data storage systems.
The highly integrated TPS546C23 power converter delivers 44% superior density (amperes per square millimeter) compared to competing products. Additionally, reference voltage accuracy of 0.5% across temperature and fully differential remote voltage sensing capabilities meet the voltage accuracy requirements of deep sub-micron (DSM) processors.
With current distribution capability, two converters can be stacked, and the device's single-pad, stacked die, QFN (quad flat no-lead) package achieves high efficiency and excellent thermal performance.
TI also offers the TPS546C20A PMBus converter with pin-strapping support that allows adjustment of output voltage and soft start time. Additionally, various converter products supporting PMBus interface are available.
This product integrates low Rdson power MOSFETs to provide continuous output current of 35A, and by integrating an on-chip PMBus interface and nonvolatile memory, power supply design can be simplified and customized.
Additionally, PMBus enables telemetry of output current, output voltage, and internal die temperature, allowing active power management. The voltage control mode with clock frequency synchronization and input feedforward functions improves EMI/noise and responds quickly to input voltage variations. Frequency synchronization to an external clock eliminates beat noise and reduces EMI.
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