The IR3596 is a flexible single-loop digital polyphase step-down controller that can be configured as a 1, 2 or 3 phase system when combined with an IR Dual 6x8mm IR3548 or IR355x power level. Power consumption is minimized while maintaining full digital capability and flexibility. Digital nonlinear transient control allows low frequency operations to achieve maximum efficiency while providing minimal all-ceramic output capacitance solutions.
The IR3596 includes the IR's efficiency shaping technology to automatically deliver superior efficiency at the lowest cost across the entire load range and can be configured to enter single-phase operation and active diode simulation modes automatically or by command. The IR3596 can also turn off the connected driver /PowIRstage to minimize static current consumption in the system, thereby maximizing the battery life of the next generation VR12.5/VR12.6 laptop/ultrabook.
IR's unique Adaptive Transient Algorithm (ATA), based on a proprietary non-linear digital PWM algorithm, minimizes output for bulk capacitors and improves transient response and form factor. Device configuration and failure parameters are easily defined using the IR Digital Power Design Center (DPDC) GUI and stored in on-chip MTP. MTP storage saves pins and supports small sized packages. Failure protection includes output OV, UV and OC protection, thermistor or NTC Ot-based protection sensing, with VRHOT signal output and overcurrent warning flags.
Pin diagram
Order information
Features
● Ultra Low Power single loop PWM Controller with 3 PWMs configurable as 1, 2, 3 phase systems
● Compliant with Intel VR12.5 Rev 1.3/VR12.6 Rev1.0 specifications
● Intel VR12.5/VR12.6 SVID or I2C controlled regulation
● Optimized for 3 phase DDR memory solution when paired with IR3548 and IR355x PowIRstage
● ~50mW @ Maximum Performance
● Compatible with Active Tri Level (ATL) Industry Standard Tri-state Drivers
● Dynamic Phase Control and Automatic Power State Switching with Active Diode Emulation for Very Light Loads
● I2C system interface for telemetry of Temperature, Voltage, Input and Output Current & Power
● Fault Protection: the Output OVP UVP, OC Warn, OCP, OT Warn, OTP
● IR Adaptive Transient Algorithm (ATA) minimizes output bulk capacitors and system cost
● 8 Time Programming (MTP) with integrated charge pump for easy custom configuration
● 200kHz to 2MHz switching frequency per phase
● +3.3V supply voltage; -40°C to 85°C ambient operation
● Pb-Free, RoHS, 4x4mm, 28-pin, 0.4mm pitch QFN
