LTC3822EGN-1#TRPBF

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

LTC3822EGN-1#TRPBF, belonging to PMIC - Voltage Regulators - DC DC Switching Controllers category, is a high-performance synchronous dual-phase buck controller designed to provide exact current regulation with 2.5% over-current protection. It features 15ns independent deadtimes and excellent phase current balance without requiring any compensation. Other features of this controller include adjustable frequency operation, spread spectrum, hardware synchronization, and phase-shedding.

The primary applications of this controller include high-performance, non-isolated, single-output converters in notebook PCs, servers, networking, battery powered devices, and telecom infrastructure. As compared to similar controllers, this product offers higher reliability, lower power consumption and easier implementation. LTC3822EGN-1#TRPBF can work with inputs ranging from 4.5V to 36V and has an adjustable switching frequency of upto 1MHz.

To understand the working principle of a LTC3822EGN-1#TRPBF, we can look at its structure and function. Its operate mode is enabled by synchronous rectification, current balancing, and spread spectrum. The main component of the circuit is the P-type metal-oxide-semiconductor (PMOS) and N-type metal-oxide-semiconductor (NMOS), both of which are connected to the regulating element–the LTC3822EGN-1#TRPBF. The ON/OFF switch regulates the amount of current passing through the elements producing a regulated output voltage. Both the PMOS and NMOS devices are switched in unison, enabling optimized efficiency and effective current balance. The presence of the spread spectrum oscillator reduces EMI from the switching converter.

The LTC3822EGN-1#TRPBF is based on a two-phase, two-switch buck regulator architecture wherein each phase provides one-half of the total output current. The two-phase hybrid regulator ensures current matching, neglectable switching noise and reduced inductor size of the battery charging application in addition to improved load transient response and ripple. This works because each phase operation is independently regulated and can result in increased efficiency by sequencing the output current. By adding a third “phase” and four switches, it can be used in a three-phase buck converter architecture.

The synchronous buck regulator uses the LTC3822EGN-1#TRPBF to control the amount of current that flows through the switches during the ON and OFF cycles. To ensure efficient operation, each switch turns ON for a specific amount of time before it will begin to turn OFF. When the switch turns ON, it creates a current pulse, which serves to charge the output capacitor and offers additional output voltage regulation. As more current is required, each switch will turn ON for a longer period of time until the total output current is delivered to the output.

When the output voltage is lower than the VFB voltage, the LTC3822EGN-1#TRPBF will turn on more current, and then it will turn off less current until the desired output voltage is reached. If the output voltage is higher than the VFB voltage, the opposite happens; the LTC3822EGN-1#TRPBF will turn off more current and will turn on less current until the desired output voltage is reached. The load on the output voltage is what dictates how much current is drawn and whether the current is turned on or off.

The LTC3822EGN-1#TRPBF also provides fault protection. It can detect a OVERTEM range of -20°C to 125°C, UVLO range of 2.5V to 4.15V, plus short-circuit and open-load protection. In addition, the external electronic components of the converter are monitored and protected through a high-bandwidth current-sensing loop for over-current protection.

The LTC3822EGN-1#TRPBF is an advanced high-performance synchronous dual-phase buck controller designed to provide exact current regulation with 2.5% over-current protection and excellent phase current balance. Its powerful feature set, robust design, and inherent protection capabilities make it ideal for use in advanced charging systems in high-performance, non-isolated, single-output converters in notebook PCs, servers, networking, battery-powered devices, and telecom infrastructure.

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