The TPS6287B20VA0WRZVR is a high-current synchronous step-down DC/DC converter from Texas Instruments designed for powering the most demanding digital loads in modern electronic systems. With a continuous output current rating of 20 A, an input voltage range of 2.7 V to 6 V, and an enhanced DCS-Control architecture that combines fast transient response with fixed-frequency operation, this device addresses the power delivery challenges of FPGAs, ASICs, and high-performance processor cores. An integrated I²C-compatible interface provides digital control, monitoring, and dynamic voltage scaling capability, enabling adaptive power management strategies that optimize both performance and energy efficiency.

High Output Current with Low-Resistance Power Stage

The TPS6287B20VA0WRZVR delivers up to 20 A of continuous output current through internal power MOSFETs with on-resistances of just 2.6 mΩ (high-side) and 1.5 mΩ (low-side). These low-resistance switches minimize conduction losses even at full load, enabling high efficiency in the compact 3.05 mm × 4.05 mm WQFN package. The device is a member of a pin-to-pin compatible family spanning 10 A, 15 A, 20 A, 25 A, and 30 A output current ratings, allowing designers to scale current capability without PCB redesign.

Enhanced DCS-Control with Fast Transient Response

The TPS6287B20VA0WRZVR implements an enhanced DCS-Control scheme that combines the fast transient response of hysteretic control with the predictable frequency behavior of fixed-frequency PWM. This architecture enables the converter to respond rapidly to load current steps—critical for powering digital cores whose current demand can change by tens of amperes within nanoseconds. The device operates in either forced PWM mode for the best transient performance and lowest output ripple, or power save mode for maximum efficiency at light loads.

Differential Remote Sense

A differential remote sense feature allows the converter to regulate the voltage at the load rather than at the converter output, compensating for the voltage drop across PCB traces and interconnect resistance. This capability is essential in high-current applications where even a few milliohms of trace resistance can cause significant voltage error at the point of load. The remote sense function ensures that the voltage delivered to the FPGA or ASIC core remains within specification regardless of layout parasitics.

I²C Interface for Digital Control and Monitoring

An I²C-compatible interface supporting data rates up to 3.4 MHz provides comprehensive digital control over the converter's operation. Through this interface, the output voltage can be dynamically adjusted to adapt the load's power consumption to its performance requirements—a technique known as dynamic voltage scaling (DVS) that is widely used in processors to reduce power during periods of low computational demand. The I²C interface also enables monitoring of output voltage, output current, and junction temperature, as well as configuration of warning thresholds for thermal pre-warning and voltage monitoring.

Output Voltage Configuration

The TPS6287B20VA0WRZVR offers three selectable output voltage ranges, each with a different step size for the internal feedback divider. The 0.4-V to 0.71875-V range provides 1.25-mV steps for the finest adjustment granularity, suitable for low-voltage digital cores operating near threshold. The 0.4-V to 1.0375-V range uses 2.5-mV steps, while the 0.4-V to 1.675-V range employs 5-mV steps. The start-up output voltage can be selected through the VSET1 and VSET2 pins using external resistors, or programmed via the I²C interface after power-up.

Stacked Operation for Higher Current

The TPS6287B20VA0WRZVR supports optional stacked operation, in which multiple devices are connected in parallel to deliver higher total output current or to spread power dissipation across multiple packages. This feature enables power architects to scale current delivery beyond 20 A while maintaining the thermal and efficiency benefits of distributed power conversion. The stacked configuration shares current equally among devices, with the I²C interface coordinating their operation.

Protection and Monitoring Features

Comprehensive protection includes thermal pre-warning and thermal shutdown, output discharge for controlled power-down sequencing, and a power-good output with window comparator that indicates when the output voltage is within a defined tolerance band. Optional spread spectrum clocking reduces peak EMI emissions by spreading the switching frequency over a narrow band, simplifying compliance with electromagnetic compatibility requirements. External compensation allows the control loop to be optimized for specific output capacitor and inductor combinations.

FPGA, ASIC, and Digital Core Supply

The primary application for the TPS6287B20VA0WRZVR is supplying the core voltage to FPGAs, ASICs, and high-performance processors. These devices require supply voltages typically in the 0.4-V to 1.2-V range with tight tolerance and the ability to respond to rapid load current changes. The TPS6287B20VA0WRZVR's fast transient response, ±0.8% DC accuracy, and remote sense capability address all three requirements. The I²C interface enables dynamic voltage scaling, allowing the system to reduce core voltage during low-activity periods and save energy without sacrificing performance when full computational power is needed.

Optical Networks and High-Speed Communication

Optical transceivers, line cards, and high-speed serial interfaces employ low-voltage digital signal processing that benefits from efficient, compact power conversion. The TPS6287B20VA0WRZVR's small footprint and high efficiency at moderate loads make it suitable for these space-constrained, thermally sensitive applications. The ability to monitor output current and junction temperature through I²C provides the telemetry needed for system health monitoring and predictive maintenance.

Storage and Data Center Equipment

Solid-state drives, storage controllers, and data center accelerators require high-current, low-voltage power with excellent transient response. The TPS6287B20VA0WRZVR's 20-A capability and stacked operation option allow it to power multiple load domains or scale to higher current requirements. The digital interface supports the remote monitoring and control capabilities that modern data center equipment requires for efficient power management and thermal optimization.

The TPS6287B25EVM-024 evaluation module can be used to evaluate the TPS6287B10, TPS6287B15, TPS6287B20, and TPS6287B25 devices, providing a common platform for characterizing the pin-compatible family. The EVM includes provisions for configuring the output voltage through the VSET pins or I²C interface, selecting the switching frequency, and measuring efficiency and transient response. Texas Instruments also provides reference designs and application notes for powering specific FPGA and ASIC families, helping engineers accelerate the power supply design process.

The TPS6287B20VA0WRZVR represents the convergence of high-current power conversion, digital control, and fast transient response in a compact package. Its 20-A output capability, enhanced DCS-Control architecture, and I²C interface address the demanding power requirements of modern digital loads, while the pin-compatible family structure provides a clear path for scaling current capability across product generations. For power architects designing FPGA, ASIC, and processor core supplies, the TPS6287B20VA0WRZVR offers a complete, well-supported solution that combines analog performance with the digital flexibility needed for adaptive power management.