PWM Doubler/Quad Logic IR3599/IR3599A FEATURES DESCRIPTION IR3599/IR3599A is a phase multiplier which is designed to 3.3V supply voltage double or quadruple the effective maximum phase count Configurable phase multiplier as either from the controller, enabling a well-controlled, high phase doubler or quad from a single PWM input count voltage regulator. Capable of generating high output Each IR3599/IR3599A is able to drive up to four independent switching frequencies from 200k-800kHz power stages from one PWM input. The IR3599/IR3599A Tri-state PWM input and outputs for can be configured as DOUBLER logic where one PWM power stage shutdown signal is internally split to drive the two power stages 180 out of phase, each at half of the PWM input frequency. IR3599A is configured to accept IRs The IR3599/IR3599A can also be configured as QUAD logic patented Active Tri-Level (ATL) PWM where one PWM signal is internally split at 0, 90, 180, signals while IR3599 accepts industrys and 270 respectively, and each at 1/4 of the PWM input standard tri-state PWM signals frequency. VCC Power-on-reset IR3599A features the patented IR Active Tri-Level (ATL) Dual Flat No-Lead (DFN) Package PWM input and output, designed to work with IR digital multi-phase controller and IR PowIRstage. The unique Lead free RoHS compliant package doubler/quad mode ATL tri-state timing allows the VR to transition into tri-state faster during load releases. IR3599 features industrys standard tri-state PWM input and output APPLICATIONS interfaces, designed to work with general multi-phase controllers, drivers or power stages. Servers and Desktop Computers High Phase Count and Phase Shedding IR3599/IR3599A also incorporates a power-on reset feature, Applications which ensures the device is active only after the supply voltage exceeds a certain minimum operating threshold. High Frequency and High Efficiency VRM ORDERING INFORMATION Standard Pack Base Part Orderable Package Type Number Part Number Form Quantity IR3599 DFN 2 mm x 2 mm Tape and Reel 3000 IR3599MTRPBF IR3599A DFN 2 mm x 2 mm Tape and Reel 3000 IR3599AMTRPBF IR3599 DFN 2 mm x 2 mm Tape and Reel 100 IR3599MTRPBF IR3599A DFN 2 mm x 2 mm Tape and Reel 100 IR3599AMTRPBF 1 www.irf.com 2012 International Rectifier July 02, 2012 V1.8 PWM Doubler/Quad Logic IR3599/IR3599A ORDERING INFORMATION IR3599A IR3599 PBF Lead Free PBF Lead Free TR Tape and Reel TR Tape and Reel M DFN Package M DFN Package 1 PWM IN 8 PWM1 Top View 2 V1p8 7 PWM2 GND Pad = Pin 9 3 6 PWM3 VCC 2x2 DFN 4 FUNCTION 5 PWM4 Figure 1: IR3599/IR3599A Package Top View 2 www.irf.com 2012 International Rectifier July 02, 2012 V1.8