From government cloud to enterprise clusters, from scientific research computing to industrial design, domestic CPU motherboards are steadily enabling the deployment of full-scenario computing power. This heterogeneous computing system, with a 12V power bus as its backbone, needs to deliver over 300W of energy precisely to each computing unit within nanosecond-level response times to ensure stable processor performance release.

The transient response and conversion efficiency of the power solution directly determine the stability of computing power output. Faced with the processor's instantaneous current fluctuations during nanosecond-level load switching and its internal precise power supply requirements for multiple voltages, how can we distribute the total power consumption of several hundred watts with low loss and fast response to each computing core? In response to the compact layout design and complex power consumption curves of domestic motherboards, IVS has deeply adapted to mainstream domestic platforms, tailor-making a full suite of power solutions. From multi-phase controllers to high-current DrMOS, to the full series of POLs, precise and efficient current supply ensures autonomous computing power stays consistently online.

IS6207A+IS6821A Power Supply

12-Phase V-CORE Solution with PMBus/SVI3 Dynamic Voltage Adjustment

The IS6207A is a dual-output digital 12-phase step-down controller specifically designed for xPU voltage regulation, compatible with PMBus/SVI3 3.0 protocol. It employs a patented Turbo Constant On-Time control algorithm, enabling dynamic phase control and intelligent power state switching for fast transient response. It also supports telemetry of current/voltage information and fault logging, facilitating system operation, maintenance, and troubleshooting.

The IS6821A is an intelligent power stage integrating power MOSFETs and gate drivers. It supports a wide input voltage range of 3V-16V, with a single phase capable of 90A current output. Paired with a controller supporting phase-loss protection, it can precisely locate a faulty phase through the PS's IMON fault reporting function, enabling independent shutdown of the faulty phase while other phases continue operating. This device combines high efficiency with a small footprint, making it an ideal choice for multi-phase power supply applications that balance performance and space optimization.

Key Features:

IS6207A

• Automatic phase adding/shedding, N+M≤12 (N≤12, M≤6)
• Compatible with PMBus, optional high-speed bus: SVI3 or PVID
• Supports storing 6 configurations, enhancing system design flexibility and compatibility
• Optimizes transient performance of two loops, effectively reducing output capacitor count and system cost
• Supports overclocking, features floating detection for VOSEN, VORTN, and PWM
• Multi-configuration switching via Pin-strap, per-phase switching frequency from 200kHz to 3MHz

IS6821A

• IMON accuracy deviation ≤ ±2% after high-temperature aging test
• IMON fault reporting function, supports phase-loss protection
• Operating frequency range covers 100kHz to 2MHz
• Single chip can withstand a positive current of 240A for 1ms load and a negative current of 130A without damage
• Precise current/temperature sampling, monitoring, and fault alert functions
• Built-in positive/negative current limiting function, can provide fault reports

Core Advantages:

• Dual-output digital 12-phase step-down power module
• 12 phases can meet output current demands up to nearly 1000A
• High efficiency and energy saving, significantly reducing power supply losses, balancing performance and power consumption
• Fast transient response, effectively suppressing voltage fluctuations, high power supply stability
• Flexible adaptation, high scalability, can meet different system upgrade and adaptation needs

IS6210A+IS6816B Power Supply

8-Phase V-CORE Solution with PMBus/SVI3 Dynamic Voltage Adjustment

The IS6210A is a dual-loop 8-phase Buck controller designed for powering high-end computing and data processing units, compatible with PMBus/SVI3 3.0 protocol. This controller features Dynamic Phase Control based on real-time load current, intelligently adjusting working phases according to load changes. It supports complete current/voltage telemetry and fault logging functions.

The IS6816B is an intelligent power stage integrating power MOSFETs and gate drivers. It can achieve a continuous output current of 90A per phase within an input voltage range of 2.5V-16V, and reach up to 95% operating efficiency at lower output voltages. It employs an optimized MOSFET design, achieving excellent current sensing accuracy through internal MOSFET sensing, effectively reducing switching and conduction losses.

Key Features:

IS6210A

• Supports TLVR applications, adapting to high-end computing device voltage regulation needs
• Features fault-tolerant operation with fault phase isolation
• Automatic phase adding/shedding, N+M≤8 (N≤8, M≤6)
• Fast response algorithm adjustment, further enhanced transient performance
• Wide frequency domain adaptive regulation from 200kHz to 3MHz, supports overclocking
• Supports floating detection for VOSEN, VORTN, and PWM

IS6816B

• Can receive tri-state Pulse Width Modulation (PWM) signals
• BST automatic refresh charging can be achieved in tri-state
• Single chip can withstand a positive current of 250A for 1ms load and a negative current of 110A without damage
• Precise current/temperature sampling, monitoring, and fault alert functions
• High current carrying capacity, excellent thermal performance, and high efficiency

Core Advantages:

• Dual-output digital 8-phase step-down power module, compact architecture
• 8 phases can meet output current demands up to nearly 720A
• Intelligent power stage efficiency scheduling and thermal balancing across the full load range, effectively optimizing light-load efficiency
• Optional temperature sensing via thermistor or highest temperature reporting function

SVI3 6+2 application

IS6609A, 30A Fully Integrated High-Frequency Synchronous Buck Converter

VDD/VDDQ High-Current Power Solution

The IS6609A is a high-efficiency, high-power-density, fully integrated synchronous buck converter with an internal LDO. It can output up to 30A current from a single input power source, simplifying power supply design. Using simple loop compensation and optimized packaging and thermal design, it meets demanding point-of-load power supply requirements for space and performance.

Key Features

• Input Voltage: 5.5V-17V, Output Voltage: 0.8V-5.5V
• Minimum startup input voltage V_IN of 2.5V (using external VCC)
• Selectable switching frequency range from 600kHz to 1.2MHz
• Diode Emulation Mode at light load, efficient operation across full load range
• Low PWM propagation delay (<20ns)
• Four selectable soft-start slopes
• Well-regulated output

Core Advantages

• High energy conversion efficiency, easy to use and design
• Fault trigger can shut down and resume operation in hiccup mode
• Achieves high efficiency and fast transient response across the full load range

IS6108 Series, Highly Integrated 50A/60A Output Parallelizable E-Fuse

Multiple Protection Device Designed for Hot Swap

The IS6108 series (IS6108A/IS6108B/IS6108C) is a programmable hot-swap protection chip designed for high-current application scenarios such as servers, data storage, and communication products. This series effectively protects the input from output short circuits and transients. During startup, inrush current can be precisely limited by setting the output voltage slew rate.

The IS6108 series integrates MOSFETs and sense resistors, highly integrating power protection, monitoring, and control functions into a single-chip solution. It supports independent operation or control via a hot-swap controller and features multi-phase parallel operation to meet higher current application demands.

Key Features

IS6108A/C

• Input Voltage: 4.5V-18V, Maximum Input Withstand Voltage: 25V
• Integrated 0.6mΩ power FET, up to 60A DC current
• 5V LDO output, fast response (200ns) for short-circuit protection
• Precise Current Sense and Temperature Sense outputs
• Supports multi-phase parallel architecture to meet high-current application needs
• Input-to-output short detection, built-in fuse health diagnostics
• Independent current sense output: for programming overcurrent value
• Fault and current limit signal output, output current measurement, and output voltage power-down control
• Built-in MOSFET driver, supports soft-start and insertion delay
• Integrated chip-level comprehensive protection and fault detection functions
• Fault Response: IS6108A supports Latched, IS6108C supports Auto Retry

IS6108B

• Input Voltage: 4V-16V
• Integrated 0.8mΩ power FET, up to 50A DC current
• Supports multi-phase parallel operation and active current sharing
• Supports startup with larger load current
• 3.3V LDO output
• IMON current monitoring accuracy ±2%
• Configurable overcurrent limit and short-circuit current limit
• Can set latch or retry (0.25s, 0.5s, 1s) via MODE
• Can set different SCP currents (40~120A) via SCREF
• Built-in MOSFET driver, supports soft-start and insertion delay
• Identifies chip fault protection type via FLT_TYPE voltage
• Integrated fault signal output and chip-level comprehensive protection detection functions

Compatibility Testing

The power management chips shown in the diagram below have passed comprehensive client-side compatibility testing and can meet the power supply requirements of different domestic CPU platforms. They cover a complete power supply solution ranging from core voltage (V-Core/CPU), system-on-chip (SOC), memory interface (VDDIO_DDR/VDDM) to various auxiliary power sources (VDD/VDDP_PHY, etc.).

This series of products has undergone strict verification testing at multiple clients and is shipped in volume, widely used in various types of domestic computing equipment. The following are application block diagrams for CPUs of different specifications/models in servers/workstations: