TPS56C231RNNR

Voltage Regulators - DC DC Switching Regulators Overview

The TPS56C231RNNR is a synchronous buck converter from Texas Instruments featuring D-CAP3 control mode. It supports an input voltage range of 4.5V to 17V without external bias, or 3.8V to 17V with external bias. The device delivers up to 12A continuous output current and 15A peak current. Integrated MOSFETs have on-resistances of 7.8mΩ (high-side) and 3.2mΩ (low-side). The reference voltage is 0.6V ±1%. Switching frequencies are selectable at 400kHz, 800kHz, or 1200kHz. Operating junction temperature ranges from -40°C to +125°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Adaptive on-time D-CAP3 control architecture eliminates the need for external compensation networks.
• Integrated high-side and low-side power MOSFETs provide high efficiency in a compact footprint.
• Configurable operating modes allow selection between Eco-mode for light-load efficiency and FCCM for tight output ripple.
• Supports ceramic output capacitors directly due to inherent stability characteristics.

Voltage Regulators - DC DC Switching Regulators Applications

• Space-constrained data center server applications
• Point-of-load regulation for digital signal processors
• Industrial equipment requiring wide input voltage tolerance

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix RNNR against the manufacturer's official datasheet to confirm package type and tape-and-reel specifications. Ensure compatibility with required switching frequency settings and thermal management requirements for the target application environment before finalizing procurement orders.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when space constraints require a small HotRod QFN package alongside high current density. Consider the D-CAP3 topology if external compensation components must be minimized. Evaluate the 400kHz to 1200kHz frequency options against inductor size and efficiency targets. Verify that the load transient requirements align with the adaptive on-time response capabilities.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the TPS56C2xx series of synchronous buck converters designed for high-density power delivery. The series utilizes Texas Instruments' proprietary D-CAP3 control technology to simplify design while maintaining fast transient response. It targets applications demanding high performance in minimal board area.

Voltage Regulators - DC DC Switching Regulators FAQ

Does the TPS56C231RNNR require external compensation?

No, the D-CAP3 control mode provides inherent stability, eliminating the need for external compensation networks.

What output capacitor types are supported?

The device supports ceramic output capacitors directly without additional phase lead compensation.