IR3570AMGB05TRP

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The IR3570AMGB05TRP is a special purpose PWM voltage regulator module that applies to various power management applications. It offers high noise immunity, wide input voltage range, and low quiescent current.

The IR3570AMGB05TRP integrates two controllable high-speed current sinks and two constant current sinks into a single package. The two controllable current sinks and two constant current sinks drive the several power devices such as MOSFETs, IGBTs, and transistors. The two controllable current sinks can be programmed to operate in a linear or a pulse-width-modulated (PWM) mode. The linear mode supports instantaneous switching of current flow while the PWM mode can facilitate power conservation and increase the efficiency of an application.

The IR3570AMGB05TRP is designed for power management in various applications such as programmable power supply, DC-DC converter, Servo Motor control and other systems with an extended operating range. With its wide output range of 0.9V to 18V, low quiescent current of 1.5µA, fast transient response, and precise output voltage regulation, this product provides an excellent solution for various power management applications.

The working principle of the IR3570AMGB05TRP is based on pulse-width modulation (PWM). The regulator consists of a voltage regulator, an output driver, and a PWM controller. The PWM controller consists of two current sinks, two constant current sinks, adjustable duty cycle, and current mode. In a current sink, a power supply voltage is compared with the voltage of the refresh signal, a fraction of the output voltage. When the supply voltage is greater than the refresh voltage, the PWM controller turns on the power device, thus allowing current to flow. When the supply voltage is lower than the refresh voltage, the controller turns off power device, thus preventing current flow.

When operating in the constant current sink mode, the IR3570AMGB05TRP provides a constant current to the output device. This eliminates the need for a large output capacitor with a low ESR and across the board noise immunity even with highly inefficient power circuits. The output driver consists of protection circuits that protect the output from overvoltage, overcurrent and reverse polarity. The voltage regulator module has 16-bit accuracy to guarantee precise output voltage and high-speed transient response for fast load changes.

In summary, the IR3570AMGB05TRP is a special purpose voltage regulator module suitable for a wide range of power management applications. It offers high noise immunity, wide input voltage range, and low quiescent current. With its wide output range of 0.9V to 18V, fast transient response, precision voltage regulation and protection circuits, this product provides an excellent solution for various power management applications.

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