High-Performance 16-Phase Digital Multiphase Controller

The RS17G22 is a dual-rail digital multiphase buck controller supporting up to 16 total phases (16+0 to 8+8) for AI accelerators, high-performance servers, networking equipment, telecom infrastructure, and high-current FPGA power rails. Native Trans-Inductor Voltage Regulator (TLVR) support, PMBus™, AVSBus, and NVIDIA PWMVID compatibility enable exceptional transient response, high efficiency, and comprehensive telemetry for today’s most demanding processor power architectures.

Designed to operate seamlessly with Reed Semiconductor Smart Power Stages, Smart Power Blocks, and Integrated Power Modules, the RS17G22 enables complete high-density voltage regulator solutions with reduced PCB area, lower BOM cost, simplified layout, and improved thermal performance.

Native TLVR Architecture

TLVR Without Additional Passive Components

The RS17G22 includes native support for Trans-Inductor Voltage Regulator (TLVR) architectures without requiring external passive components. TLVR significantly improves load transient performance while reducing the amount of bulk output capacitance needed around modern CPUs, GPUs, and AI accelerators.

Faster Dynamic Response

Combined with Constant-On-Time (COT) control, programmable slew rates, and advanced digital compensation, the controller delivers fast voltage regulation during large load current transients while minimizing output voltage overshoot and undershoot.

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Flexible Multiphase Architecture

Up to 16 Total Phases

The RS17G22 supports flexible dual-railphase configurations from 16+0 through 8+8, allowing designers to optimize the power architecture for single-rail or dual-rail processor applications.

Automatic Phase Management

Programmable automatic phase add/drop improves light-load efficiency while maintaining excellent transient performance across the full operating range.

Flexible Phase Assignment

Flexible phase ordering simplifies PCB routing and enables optimized layouts for complex high-current power stages.

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Optimized for Reed Semiconductor Power Solutions

Smart Power Stages

The RS17G22 is fully compatible with Reed Semiconductor Smart Power Stages, providing a complete digital voltage regulator solution optimized for AI and server processors. When combined with Reed Smart Power Stages, designers benefit from higher efficiency, excellent thermal performance, and industry-leading power density.

Smart Power Blocks

Pairing the RS17G22 with Reed Smart Power Blocks creates compact, highly integrated multiphase power solutions with reduced design complexity, optimized switching performance, and simplified PCB layout.

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Precision Digital Control and Telemetry

PMBus and AVSBus Interface

The integrated PMBus™ v1.4.1 and AVSBus interfaces provide complete digital configuration, monitoring, and system management without requiring additional supervisory devices.

Accurate Telemetry

High-accuracy telemetry simplifies system diagnostics by providing:

• ±1.5% input voltage accuracy
• ±1.5% output voltage accuracy
• ±1.5% output current accuracy
• ±2°C temperature accuracy

Multiple-Time Programmability

Built-in Multiple-Time Programmability (MTP) supports up to 32 rewrites, allowing production calibration, firmware optimization, and future feature updates without replacing the device.

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Advanced Voltage Regulation

Programmable Load-Line Control

Programmable DC load-line compensation allows designers to optimize processor voltage regulation while minimizing output capacitance requirements.

Optimized Transient Performance

Programmable overshoot and undershoot reduction thresholds improve transient response for rapidly changing processor loads common in AI, cloud computing, and networking applications.

Internal Compensation

Integrated compensation reduces external component count while simplifying loop stability optimization across a wide operating range.

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Comprehensive Protection Features

The RS17G22 integrates a complete suite of programmable protection features to improve system reliability.

Protection Functions

• Input undervoltage lockout (UVLO)
• Output undervoltage protection (UVP)
• Output overvoltage protection (OVP)
• Overcurrent protection (OCP)
• Overtemperature protection (OTP)
• Cycle-by-cycle per-phase current limiting
• Programmable latch-off or auto-retry fault response

Integrated fault logging further simplifies system debugging and post-fault analysis.

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High Efficiency and Reduced System Cost

The RS17G22 helps reduce overall system cost by combining advanced digital control with intelligent power management features.

Benefits include:

• Reduced output capacitance through TLVR support
• Fewer external passive components
• Smaller PCB footprint
• Improved light-load efficiency
• Reduced thermal stress
• Optimized BOM cost

These advantages make the controller well suited for next-generation AI servers, cloud computing platforms, networking switches, telecom infrastructure, and accelerator cards.