IR3590BMTRPBF

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

IR3590BMTRPBF Application Field and Working Principle

Vastly used in today\'s power circuitry, the IR 3590 controller is a monolithic constant off-time current mode SMPS controllers manufactured by International Rectifier. The device comes in an 8-pin SOICW (Wide) package and is primarily used in non-isolated DC/DC converters. In this article, we will discuss the application field and working principle of IR3590BMTRPBF, a component of the IR3590 family.

The IR3590 family of SMPS controllers consist of a high frequency type (10 kHz-2 MHz) constant off time current mode controllers, designed specifically to drive an external N-channel MOSFET (NMOS) in a synchronous rectification, buck, COT buck, forward, or any combination of the above topologies depending on the number of external P-channel and N-channel MOSFET (PMOS) and NMOS transistors available. The integrated logic-integrated circuit, named the "One-Shot", provides a constant OFF-time to the NMOS device and prevents the PWM loop entering a shoot-through condition.

Application Field

The IR3590BMTRPBF from the IR3590 family, can drive an N-channel MOSFET up to 40V and can be used in either a buck, COT buck, forward, or any combination of the above topologies depending on the number of external NMOS and PMOS transistors available. With its Zero-Bias start feature, no bias currents and synchronous rectification, IR 3590 provides high-efficiency power conversion with minimal current consumption. The device also features overcurrent protection, undervoltage lockout (UVLO), and overvoltage protection (OVP). In auto dimming applications, its dimming circuit implements fee-back from isolated gate drive voltage or from the output voltage.

The wide input voltage range of 4.5V-40V makes IR 3590 suitable for various applications such as chargers, DC/DC converters, PCMCIA cards, satellite set-top boxes and LCD TVs. Furthermore, its high-frequency operating frequency, fast current loop response time, increased system damping and improved transient response makes IR 3590 suitable for higher power applications such as, notebook adapters, and server power supplies.

Working Principle

To understand the working principle of the IR3590BMTRPBF, we must first understand the principle of operation of a buck converter. The basic idea of a buck converter is to maintain a constant output voltage by changing the duty cycle of the input voltage. This is achieved by controlling the voltage across an NMOS transistor, which is connected in series with the ground and the input voltage. When the NMOS’s voltage is low (low duty cycle), it is considered to be “off”, and the input voltage is connected to the output voltage. When the NMOS’s voltage is high (high duty cycle), it is considered to be “on”, and the output voltage is zero.

The IR3590BMTRPBF is an integrated device which includes all the necessary features to control a buck converter, the most important being the on-time control. The device consists of an internal voltage comparator, current sense resistor and main control loop. The voltage comparator senses the output voltage and compares it to a reference voltage. The current sense resistor senses the output current and passes it to the internal comparator. Depending on the voltage and current differences, the controller will adjust the on-time (duty cycle) to keep the output voltage at its desired level.

It’s important to note that the off-time of the IR3590BMTRPBF is fixed, meaning that the device is always in a continuous mode. This ensures that the output voltage remains constant and that any change in the load will be compensated to ensure a regulated output voltage.

In addition to maintaining a regulated output voltage, the IR3590BMTRPBF also provides over-current and over-voltage protection. These two features work together to prevent any damage to the output stage of the converter. When the current exceeds a certain limit or the voltage reaches a certain level, the device will shut down and prevent the output stage from being damaged.

The IR3590BMTRPBF from the IR3590 family is used as a DC-DC switching controller, widely used in today’s power circuitry. Its wide input voltage range of 4.5V-40V makes it suitable for various applications, such as chargers, DC/DC converters, PCMCIA cards, satellite set-top boxes, and LCD TVs. The device also features over-current protection and over-voltage protection, ensuring that the output stage remains safe from any potential damage. Lastly, the fixed off-time of the device ensures a constant output voltage, allowing for precise and stable regulation.

The specific data is subject to PDF, and the above content is for reference