RS18G30
Triple-Channel (N+M+O<= 16 Phase) Step-Down Multiphase Controller with SVID/SVI3/AVSBus and PMBus™ Interface
Features
Native TLVR & High-Performance Control
- The RS18G30 is a native Trans-Inductor Voltage Regulator (TLVR) support
- No external passive components required
- Up to 4 MHz switching frequency
- Constant On-Time (COT) control
- Internal compensation
- Fast transient response with programmable slew rates
- Integrated 1 kΩ current sense resistor
Universal Triple-Channel Architecture
- Triple-channel controller supporting up to 16 total phases (16+0+0 to 8+4+4)
- Supports Intel SVID, AMD SVI3, and AVSBus
- Three independently configurable output rails
- Flexible phase-order assignment
- Automatic phase add/drop
- Thermal balance management
Input, Output & Regulation
- 4.5 V to 16 V input voltage
- 0.2 V to 2.7 V programmable output voltage
- Differential remote voltage sensing
- ±0.5% output voltage accuracy
Precision Telemetry
- ±1.5% input voltage accuracy
- ±1.5% output voltage accuracy
- ±1.5% output current accuracy
- ±2°C temperature accuracy
Advanced Digital Control
- Intel SVID compliant
- AMD SVI3 2.0/3.0 compliant
- AVSBus™ 1.4/2.0 compliant
- PMBus v1.4.1 compliant
- Built-in Multiple-Time Programmability (MTP)
- Up to 31 field reprogramming cycles
- Programmable DC load-line compensation
- Programmable overshoot and undershoot reduction
- Black-box fault logging
Comprehensive Protection
- Programmable latch-off or auto-retry fault response
- 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
Optimized for Reed Power Solutions
- Designed for Reed Semiconductor Smart Power Stages
- Compatible with Reed Semiconductor Power Modules
- High-density digital VRM and multi-rail power solutions
- Reduces output capacitance and external passive components
- Optimized for AI, server, networking, FPGA, and ASIC power architectures
Package & Compliance
- 7 mm × 7 mm, 60-pin QFN package
- RoHS compliant
Description
Universal Triple-Channel Digital Multiphase Controller
The RS18G30 is a triple-channel digital multiphase buck controller supporting up to 16 total phases (16+0+0 to 8+4+4) for Intel® and AMD processor platforms, AI accelerators, FPGA and ASIC power supplies, networking equipment, telecommunications infrastructure, graphics processors, and high-density power modules. Supporting Intel® SVID, AMD SVI3, AVSBus™, and PMBus™, the RS18G30 provides a single controller platform for a broad range of high-performance digital power applications.
Designed to pair seamlessly with Reed Semiconductor Smart Power Stages and Power Modules, the RS18G30 combines native Trans-Inductor Voltage Regulator (TLVR) technology with advanced digital control to deliver exceptional transient response, precise voltage regulation, and outstanding power density. Programmable load-line compensation, automatic phase management, high-accuracy telemetry, and Multiple-Time Programmability (MTP) simplify development while maximizing system performance.
Universal Platform Compatibility
Support for Intel®, AMD, and AVSBus Platforms
The RS18G30 supports Intel® SVID, AMD SVI3, and AVSBus™ interfaces, enabling a common digital power architecture across multiple processor ecosystems. A single controller platform simplifies product development, reduces design effort, and shortens qualification time for manufacturers supporting multiple computing platforms.
PMBus Digital Management
A fully compliant PMBus v1.4.1 interface enables complete configuration, telemetry, diagnostics, and system monitoring throughout development, production, and field operation.
Flexible Triple-Channel Architecture
Up to 16 Total Phases
The RS18G30 supports flexible three-channel configurations ranging from 16+0+0 to 8+4+4, allowing designers to optimize power delivery for processors, memory rails, AI accelerators, FPGA fabric, and auxiliary power supplies.
Independent Multi-Rail Power
Three independently configurable outputs allow the RS18G30 to reduce PCB area and component count while simplifying complex multi-rail power architectures.
Intelligent Phase Management
Automatic phase add/drop improves light-load efficiency while maintaining excellent transient performance under heavy system loading.
Native TLVR Architecture
Native Trans-Inductor Voltage Regulator Support
Integrated TLVR capability eliminates the need for additional external passive components while significantly improving transient response and reducing output capacitance requirements.
High-Speed Voltage Regulation
Constant On-Time (COT) control operating at switching frequencies up to 4 MHz delivers rapid response to changing processor loads while minimizing voltage overshoot and undershoot.
Integrated Current Sensing
A built-in 1 kΩ current sense resistor simplifies current measurement and contributes to a more compact, efficient voltage regulator design.
Precision Digital Control & Telemetry
High-Accuracy Telemetry
Integrated telemetry continuously monitors critical operating parameters, including:
- ±1.5% input voltage accuracy
- ±1.5% output voltage accuracy
- ±1.5% output current accuracy
- ±2°C temperature accuracy
This real-time monitoring enables intelligent power optimization, predictive maintenance, and simplified fault analysis.
Multiple-Time Programmability
Built-in Multiple-Time Programmability (MTP) supports up to 31 rewrites, allowing production calibration, firmware updates, and field optimization throughout the product lifecycle.
Advanced Voltage Regulation
Programmable Load-Line Compensation
Programmable DC load-line compensation optimizes processor voltage regulation while minimizing external output capacitance and improving transient response.
Optimized Dynamic Performance
Programmable overshoot and undershoot reduction, together with programmable slew rates, provide stable voltage regulation during rapidly changing processor and accelerator workloads.
Thermal Balance Management
Intelligent current balancing distributes load current evenly across active phases to improve efficiency, reduce hot spots, and maximize long-term reliability.
Comprehensive Protection Features
The RS18G30 integrates a complete suite of programmable protection features to maximize system reliability in mission-critical computing applications.
Integrated Protection Functions
- Programmable latch-off or auto-retry fault response
- 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
Integrated black-box fault logging captures fault information to simplify validation, manufacturing, and field diagnostics.
Optimized for Reed Semiconductor Power Solutions
Smart Power Stages
The RS18G30 is optimized for Reed Semiconductor Smart Power Stages, enabling high-efficiency, high-current voltage regulator designs with exceptional power density.
Integrated Power Modules
The RS18G30 is compatible with Reed Semiconductor Smart Power Stages and Smart Power Blocks simplifies development while enabling scalable digital power solutions for high-performance computing applications.
Reduced System Complexity
Native TLVR support, integrated current sensing, universal processor interface compatibility, and intelligent phase management reduce external component count, lower BOM cost, and simplify the design of advanced digital power systems.
Related Reed Semiconductor Products
Smart Power Stages
- RS86610 (2.5 to 16VIN, 60A . ≤2MHz 4 x 5mm TLGA-25)
- RS86810 (2.5 to 16VIN, 90A, ≤2MHz 5 x 6mm TLGA-41)
- RS85A01 (2.5 to 7.5VIN, 100A, ≤3MHz 5 x 6 TLGA-41)
Smart Power Blocks
- RSM5G02 (2.5 to 7.5VIN, 2-Phase, 140A module 10 x 9 x 8mm LGA-72)
- RSM6G03 (2.5 to 16VIN, 2-Phase, 140A module 10 x 9 x 4mm LGA-72)
- RSM5G05 ( 2.5 to 7,5VIN, 2-Phase 140A module 10 x 9 x 5 mm LGA-72)
