IR3580_15 Datasheet, PDF (1/7 Pages) International Rectifier – Single Output Digital Multi-Phase Controller

IR3580 ^{Single Output Digital Multi-Phase Controller}
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
 +3.3V supply voltage; -40^oC to 85^oC ambient
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 and compliant with
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
IR3580
Package Type
48-pin QFN 6 mm x 6 mm
Standard Pack
Form
Quantity
Tape and Reel
3000
Orderable
Part Number
IR3580MxxyyTRP¹
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).
1 ^{www.irf.com | © 2014 International Rectifier}
September 17, 2014 | V2.3