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High voltage DC-DC

Discover the perfect solution for your high voltage DC-DC conversion needs with STMicroelectronics' exceptional range of converters. Designed specifically for industrial applications, these converters offer outstanding performance and ruggedness.

One of the standout features of these converters is their ability to handle input voltages of 60V or higher, ensuring reliable operation even in challenging industrial environments.

Choose from our versatile range of converters, available with or without integrated switches, providing you with the flexibility to meet your specific requirements. The integrated switch option simplifies your design process, while the non-integrated version allows for greater customization.

High Voltage DC-DC Intro 2 (LC)

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Operating at switching frequencies ranging from 100kHz to 2.2MHz, our converters deliver excellent efficiency and precise power distribution. This wide frequency range ensures optimal performance across diverse applications, enhancing overall system efficiency and minimizing power losses.

Equipped with integrated FETs, these converters can handle output currents of up to 3A, making them suitable for a wide range of applications such as industrial machinery, robotics, drones, power tools, solar inverters, UPS and many others.

To support your development process, we provide evaluation boards (ev-boards) for all our converter parts, enabling rapid prototyping and system testing. This allows you to validate the converters' performance and functionality in your specific application.

STMicroelectronics' high voltage DC-DC converters are designed to accommodate input rails from 12V to 48V, making them an ideal choice for various voltage systems. With their reliability, efficiency, and performance, they are the perfect fit for industrial applications and beyond.

 

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High Voltage DC-DC tables (LC)

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Part Vinmax Vout range Ioutmax FSW Op mode Internal switch Async/Sync Auto grade Package Ev boards
L3751 75 0,8 ÷ 60 - 100 - 1000 kHz PFM/PWM No Sync No QFN20 (3.5 x 4.5 mm) STEVAL-L3751V12
A7987 60 0,8 ÷ Vin 3 250 - 1500 kHz PWM Yes Async Yes HTSSOP16 (5x6 mm) STEVAL-ISA207V1
L7987 60 0,8 ÷ Vin 3 250 - 1500 kHz PWM Yes Async No HTSSOP16 (5x6 mm) STEVAL-ISA152V1
L7987L 60 0,8 ÷ Vin 2 250 - 1500 kHz PWM Yes Async No HTSSOP16 (5x6 mm) STEVAL-ISA198V1
L7983 60 0,8 ÷ Vin 0,3 200 - 2200 kHz PFM/PWM Yes Sync No DFN10 (3x3 mm) STEVAL-L7983xxx

 

App list Details Part(s)
Industrial robotics (now 24V but rising) Power actuators - high power MPUs - Process control L3751; L7987L; L7983
Industrial IoT 24V bus fail safe: low power MCUs - sensing L7983
Industrial automation - servo drives 24/48V DC power: HMI L3751; L7987L; L7983
Industrial automation - servo drives 24/48V DC power: power control L3751; L7987
Industrial automation - PLC 24/48V systems L3751; L7987
Telecom 48V battery systems L3751
Light e-mobility 24/36V battery pack L3751; L7987L; L7983
Light e-mobility 48V battery pack L3751
Power tools 24/36V battery pack L3751; L7987L; L7983
Drones/rovers 24/36V battery pack L3751; L7987L; L7983
Drones/rovers 48V battery pack L3751
Uninterruptible Power Source (UPS) 12/24/36 battery pack L3751; L7987L; L7983
Uninterruptible Power Source (UPS) 48V battery pack L3751
Solar inverters 48V string input L3751
Automotive 24V battery (truck - agricolture machines - forklift) A7987