Part Number: PI3740-00-LGIZ

Manufacturer: Vicor Corporation

Description: DC-DC CONVERTER 10-50V

Shipped from: Shenzhen/HK Warehouse

Stock Available: Check with us


The PI3740-00-LGIZ is a modern, high-efficiency, and flexible DC-DC ZVS Buck-Boost Regulator. It was made to meet the power supply needs of current electronic systems, which are very demanding. With its small System-in-Package (SiP) integration, the PI3740-00-LGIZ is a great choice for high-density and best-in-class power economy applications. This article discusses the PI3740-00-LGIZ’s best features, how it operates, and its best uses.

Understanding the PI3740-00-LGIZ

The PI3740-00-LGIZ merges a controller, power switch, and support components into a single, highly integrated SiP. This makes the design simpler and the size smaller. Its high-performance Zero-Voltage Switching (ZVS) design improves performance at the point of load, allowing it to be as efficient as 96%. This means that there will be less power loss and better power transfer for a wide range of uses.

Efficiency and Power Output

One thing that makes the PI3740-00-LGIZ stand out is that it is very efficient, with power conversion rates of up to 96%. This high efficiency is important for energy-sensitive applications, where power loss must be kept to a minimum to improve total system performance and extend the life of the battery. The PI3740-00-LGIZ can also handle steady output power from 50W to an impressive 140W, which means it can be used with a wide range of electronic devices.

Advanced Parallel Capability

The PI3740-00-LGIZ can work in parallel and share power over a single wire. This one-of-a-kind feature lets the load current be split between multiple regulators, giving redundancy and making the system more reliable in important applications. The system is more reliable because it can work in parallel, so it can keep running even when things get tough.

High-Frequency Operation and Dynamic Response

The PI3740-00-LGIZ works at high switching frequencies because it has a ZVS design. This quality leads to a number of benefits, such as a smaller size for external filtering parts, a higher power density, and a faster dynamic reaction to changes in the line and load. The regulator handles changes in input voltage and load changes well, making the power source stable and reliable.

Versatile Protection Features

The PI3740-00-LGIZ DC-DC ZVS Buck-Boost Regulator has a number of safety measures that protect both the regulator and the devices it is connected to. These important safety measures are very important for making sure the system is safe and reliable in all kinds of situations. Let’s look at each security trait and what it means:

  • Lockout for too much or too little power (OVLO or UVLO): Overvoltage Lockout (OVLO) and Undervoltage Lockout (UVLO) keep an eye on the input voltage level and stop the system from working when the voltage is too high or too low.
  • OVLO: When the input voltage goes over a predetermined threshold, the OVLO feature shuts down the regulator to avoid overvoltage conditions. The PI3740-00-LGIZ DC-DC ZVS Buck-Boost Regulator prevents damage to both the regulator and the attached devices caused by excessive voltage, such as during a power surge or voltage spike.
  • UVLO: The UVLO feature, on the other hand, makes sure that the regulator stays off if the input voltage goes below a certain minimum threshold. This keeps the system from running when the output voltage can’t be maintained. This keeps the system safe and stable even when the input voltage is low.
  • Output Overvoltage Protection (OVP): The Output Overvoltage Protection (OVP) function constantly checks the output voltage and takes action if it goes above a safe level.
  • OVP Activation: If the output voltage goes above the set threshold, the OVP function kicks in and shuts down the regulator, protecting the connected load from too much voltage.
  • Load Protection: The OVP feature protects sensitive connected devices, like microcontrollers, sensors, and other electronic components, from damage that could be caused by too much voltage by stopping overvoltage conditions at the output.
  • Overtemperature Protection (OTP): The Overtemperature Protection (OTP) feature keeps an eye on the regulator’s temperature to make sure it works safely within the limits set by the manufacturer.
  • Temperature Monitoring: The OTP function checks the temperature of important parts of the regulator, like the power switches and controller, all the time.
  • Thermal Shutdown: If the temperature goes above the safe working limits because of too much load or not enough cooling, the OTP feature shuts it down to stop it from getting hotter and doing more damage.
  • Improved Reliability: The OTP feature makes the regulator and connected devices last longer and work better by avoiding thermal stress and component failure caused by too much heat.

With these protection features, the PI3740-00-LGIZ DC-DC ZVS Buck-Boost Regulator makes sure that the power supply system is strong and stable. The OVLO/UVLO, OVP, and OTP mechanisms all work together to protect the regulator and the devices it is attached to from overvoltage, Undervoltage, high temperatures, and electrical faults. This not only protects the expensive electronic parts, but also helps keep the system from breaking down, making the power source solution safer, more stable, and last longer. Designers and engineers can use the PI3740-00-LGIZ regulator with confidence on important projects because it has all the necessary safety features to work in a wide range of conditions.

Temperature Ranges and Light-Load Efficiency

The PI3740-00-LGIZ comes in two different temperature ranges: from -40 to 115°C for the LGIZ version and from -55 to 115°C for the LGMZ version. This makes it possible for it to work with a wide range of apps in different environments. Also, the PI3740-00-LGIZ has a great light-load economy, which means it uses less energy even when not much power is being used.


The PI3740-00-LGIZ DC-DC ZVS Buck-Boost Regulator is a flexible and efficient way to convert power that works well in many different situations. Here is a list of some of the most important application areas where the PI3740-00-LGIZ shines, along with a short explanation of how its features help each area:

● Industrial Automation

The PI3740-00-LGIZ is good for industrial automation systems that may have voltage changes because of its wide input voltage range and high-efficiency function. Its fast dynamic reaction keeps the power supply stable even when the load changes. This makes it reliable for control processes that are very important.

● Telecommunications Infrastructure

In telecommunications equipment, the high power density and parallel-capable design of the PI3740-00-LGIZ allow for efficient power conversion with a smaller size. It is very efficient, so it uses less energy and costs less to run networking equipment.

● Automotive Electronics

The rugged design and protection features of the PI3740-00-LGIZ make it a good choice for automotive use. Its ability to handle a wide range of input voltages keeps it stable in cars with different electrical systems. It makes electric and hybrid cars use power more efficiently, which saves money on gas.

LED Systems for Lighting The high switching frequency and steady current mode of the PI3740-00-LGIZ make it ideal for driving LED lighting systems. It uses less power and produces less heat because it is so efficient. This makes the LEDs last longer and keeps the light steady.

● Renewable Energy Systems

In systems that use renewable energy sources like solar and wind power, the PI3740-00-LGIZ’s wide input voltage range makes it easy to convert power from sources that have different voltages. Its high efficiency improves energy harvesting and makes sure that renewable resources are used in the best way possible.

● Consumer Electronics

The high-efficiency function of the PI3740-00-LGIZ is helpful in portable electronics because it makes the battery last longer and reduces how often it needs to be charged. It can be used for a wide range of consumer electronics because of its small size and flexible input/output voltage range.

● Renewable Energy Storage

Due to its adaptability and effectiveness, the PI3740-00-LGIZ is a good fit for battery banks and other renewable energy storage systems. Its high power output and security features guarantee dependable energy management and conversion.

In summary, the PI3740-00-LGIZ DC-DC ZVS Buck-Boost Regulator has outstanding performance and dependability in a variety of applications. Due to its distinctive qualities, such as high efficiency, a wide input/output voltage range, and flexible protective mechanisms, it is the best option for powering a variety of electronic devices, from consumer electronics to industrial automation to renewable energy applications.


The PI3740-00-LGIZ is a state-of-the-art DC-DC ZVS Buck-Boost Regulator with high efficiency, a wide input and output range, and good performance and reliability. It is a top choice for many users that need high-density and energy-efficient power solutions because it combines advanced ZVS technology, flexible protection features, and efficient power conversion. With the PI3740-00-LGIZ, designers, and engineers can make sure that their cutting-edge electronic systems work well and last a long time.

Contact ICRFQ, a top Chinese distributor of electronic components, to find out more and buy the PI3740-00-LGIZ at an affordable price. Use cutting-edge technology in your projects today.

4.8/5 - (397 votes)
Kevin Chen