Infineon IR3599MTRPBF

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 0°, 90°, 180°, and 270° 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 is a phase multiplier which is designed for high phase count applications to reduce the number of interface signals between controller and drivers. When it is configured in doubler mode, only two PWM output signals are controlled by the single PWM input. The doubler logic alternates the two PWM outputs at half of the PWM input frequency so that it can generate two out of phase PWM signals. The rest two PWM output are in tri-state. When it is configured in quad mode, all four PWM output are controlled by the single PWM input. The quad logic will alternate the four PWM outputs at 0°, 90°, 180°, and 270° 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. 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 incorporates a power-on reset feature, which ensures the device is active only after the supply voltage is high enough to generate 1.8V. IR3599/IR3599A is powered from 3.3V DC supply. An internal LDO generates a 1.8V rail to power the PWM output in IR3599A. During initial startup, the 1.8V rail follows the rising 3.3V supply voltage, proportional to an internal resistor tree. All PWM outputs are disabled and in a high impedance state before the VCC supply voltage exceeds the POR rising threshold. During normal operation the IR3599/IR3599A continue to remain active until the VCC supply voltage falls below the POR falling threshold. The IR3599A is driven by a patented active tri-level (ATL) PWM control signal provided by the IR digital PWM controllers and also delivers the ATL PWM signals to the following power stages. During normal operation, PWM input signal swings between 0V and 1.8V and the generated PWM output signals also swings between 0 and 1.8V. When PWM input signal crosses a voltage level higher than the Tri-level high threshold, it will enter tri-state operation.

• 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
• Each IR3599/IR3599A is able to drive up to four independent power stages from one PWM input
• VCC Power - on - reset Dual Flat No - Lead (DFN) Package
• 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. 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 incorporates a power - on reset feature, which ensures the device is active only after the supply voltage exceeds a certain minimum operating threshold

• Servers and Desktop Computers
• High Phase Count and Phase Shedding Applications
• High Frequency and High Efficiency VRM