IR3599_15 Datasheet, PDF (1/18 Pages) International Rectifier – 3.3V supply voltage

PWM Doubler/Quad Logic _{IR3599/IR3599A}
FEATURES
 3.3V supply voltage
 Configurable phase multiplier as either
doubler or quad from a single PWM input
 Capable of generating high output
switching frequencies from 200k-800kHz
 Tri-state PWM input and outputs for
power stage shutdown
 IR3599A is configured to accept IR’s
patented Active Tri-Level (ATL) PWM
signals while IR3599 accepts industry’s
standard tri-state PWM signals
 VCC Power-on-reset
 Dual Flat No-Lead (DFN) Package
 Lead free RoHS compliant package
APPLICATIONS
 Servers and Desktop Computers
 High Phase Count and Phase Shedding
Applications
 High Frequency and High Efficiency VRM
DESCRIPTION
IR3599/IR3599A is a phase multiplier which is designed to
double or quadruple the effective maximum phase count
from the controller, enabling a well-controlled, high phase
count voltage regulator.
Each IR3599/IR3599A is able to drive up to four independent
power stages from one PWM input. The IR3599/IR3599A
can be configured as DOUBLER logic where one PWM
signal is internally split to drive the two power stages 180°
out of phase, each at half of the PWM input frequency.
The IR3599/IR3599A can also be configured as QUAD logic
where one PWM signal is internally split at 0º, 90º, 180º,
and 270º respectively, and each at 1/4 of the PWM input
frequency.
IR3599A features the patented IR Active Tri-Level (ATL)
PWM input and output, designed to work with IR digital
multi-phase controller and IR PowIRstage. The unique
doubler/quad mode ATL tri-state timing allows the VR to
transition into tri-state faster during load releases. IR3599
features industry’s standard tri-state PWM input and output
interfaces, designed to work with general multi-phase
controllers, drivers or power stages.
IR3599/IR3599A also incorporates a power-on reset feature,
which ensures the device is active only after the supply
voltage exceeds a certain minimum operating threshold.
ORDERING INFORMATION
Base Part
Number
IR3599
IR3599A
IR3599
IR3599A
Package Type
DFN 2 mm x 2 mm
DFN 2 mm x 2 mm
DFN 2 mm x 2 mm
DFN 2 mm x 2 mm
Standard Pack
Form
Quantity
Tape and Reel
3000
Tape and Reel
3000
Tape and Reel
100
Tape and Reel
100
Orderable
Part Number
IR3599MTRPBF
IR3599AMTRPBF
IR3599MTRPBF
IR3599AMTRPBF
1 www.irf.com | © 2012 International Rectifier
July 02, 2012 | V1.8