The IS6204A is a dual-output digital multi-phase buck controller specifically designed for CPU voltage regulation, fully compliant with the PMBus 1.3.1 standard. This controller employs a proprietary patented Turbo Constant On-Time (TCOTTM) control algorithm, enabling rapid transient response. 

The IS6204A is equipped with proprietary efficiency adjustment technology to ensure outstanding efficiency across the entire load range. The dynamic phase control function can automatically or by command add or remove phases based on the load current. The IS6204A can be configured to operate with one or two outputs, supporting 127 address values, and is suitable for PMBus and I2C bus interfaces. Device configuration can be easily defined through the Innovision GUI and stored in on-chip non-volatile memory (NVM) to reduce external components and minimize package size. 

The IS6204A offers extensive fault protection including OVP, UVP, OCP, OTP and CAT_FLT, and provides temperature sensing based on a thermistor or maximum temperature reporting when used with the power stage. This controller is highly flexible and can be used with DCR current sensing, precision current sense resistors and power stages.

Product parameters

Protocol: PMBus/SVI2

Switching frequency: 200 KHZ ~2MHz

Phase application: 3+1

●Dual output, 4 phase (3+1) PWM Controller 

●Switching frequency from 200KHz to 2MHz per phase in 56 steps 

●Proprietary Efficiency Shaping Technology including Dynamic Phase Control and Automatic Power State Switching 

●Programmable 1-phase or 2-phase operation for Light Loads and Active Diode Emulation for Very Light Loads

●Improved Transient Performance on both loops minimizes output bulk capacitors and system cost 

●Fault Detection and Protection: OVP, UVP, OCP, OTP, and CAT_FLT 

●I2C/SMBus/PMBus system interface for reporting of temperature, voltage, current, and power telemetry for both outputs 

●Non-Volatile Memory (NVM) for easy and virtually unlimited non-volatile programming 

●Compatible with 3.3V tri-state drivers

●+3.3V supply voltage;  -40°C to 85°C ambient operation;  -40°C to 125°C junction operation