Single Output Digital Multi-Phase Controller

IR3580

September 17, 2014 | V2.3

1

FEATURES

 Ultra Low Quiescent Power 8-phase single output

PWM Controller

 Intel® VR12 and VR12.5, & Memory VR modes

 Overclocking & Gaming Modes

 PVI GPU VR mode

 Switching frequency from 194KHz to 2MHz per

phase in 56 steps

 IR Efficiency Shaping Features including Variable

Gate Drive, 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

 IR Adaptive Transient Algorithm (ATA) minimizes

output bulk capacitors and system cost

 Auto-Phase Detection with PID Coefficient auto-

scaling

 Fault Protection: OVP, UVP, OCP, OTP, CAT FLT

 I2C/SMBus/PMBus system interface for reporting

of Temperature, Voltage, Current & Power

telemetry for both loops

 Multiple Time Programming (MTP) with integrated

charge pump for easy non-volatile programming

 Compatible with 3.3V tri-state drivers and IR ATL

mode drivers

operation

 Pb-Free, RoHS, 6x6mm 48-pin, 0.4mm pitch QFN

APPLICATIONS

 Intel® VR12 and VR12.5 based systems

 Overclocked & Gaming platforms

DESCRIPTION

The IR3580 is a single-loop digital multi-phase buck

controller that controls up to 8 phases. The IR3580

is fully compliant with Intel

VR12.5 Rev 1.3 PWM specifications.

The IR3580 includes IR’s Efficiency Shaping

Technology to deliver exceptional efficiency at

minimum cost across the entire load range. IR

Variable Gate Drive optimizes the MOSFET gate

drive voltage based on real-time load current. IR’s

Dynamic Phase Control adds/drops phases based

upon load current. The IR3580 can be configured to

enter 1 or 2-phase operation and active diode

emulation mode automatically or by command.

IR’s unique Adaptive Transient Algorithm (ATA),

based on proprietary non-linear digital PWM

algorithms, minimizes output bulk capacitors.

IR3580 has 127 possible address values for both the

PMBus and I2C bus interfaces. The device

configuration can be easily defined using the IR

Digital Power Design Center (DPDC) GUI, and is

stored in the on-chip Non-Volatile Memory (NVM).

This reduces external components and minimizes

the package size.

The IR3580 provides extensive OVP, UVP, OCP,

OTP and CAT FLT fault protection and includes

thermistor based temperature sensing or per phase

temperature reporting when using the IR

powIRstage. The controller is designed to work with

either Rdson current sense PowIRstages or with

DCR current sense.

The IR3580 also includes numerous VR design

simplifying and differentiating features, like register

diagnostics, which enable fast time-to-market.

ORDERING INFORMATION

Base Part

Number

Package Type

Standard Pack

Orderable

Part Number

Form

Quantity

IR3580

48-pin QFN 6 mm x 6 mm

Tape and Reel

3000

IR3580MxxyyTRP

1

IR3580

48-pin QFN 6 mm x 6 mm

Tape and Reel

3000

IR3580MTRPBF

IR3580

48-pin QFN 6 mm x 6 mm

Tray

4900

IR3580MTYPBF

Notes:

1.

Customer Specific Configuration File, where xx = Customer ID and yy = Configuration File (Codes assigned by IR Marketing).