Summary of 36V, 600MA DC-DC CONVERTERS WITH INTEGRATED INDUCTORS
Torex Semiconductor introduced the XCL230/XCL231 series, compact 36V, 600mA step-down DC-DC converters with integrated inductors. These devices feature a 3.0–36V input range and 1.2MHz switching frequency using synchronous rectification for high efficiency. The XCL230 uses fixed PWM control to suppress ripple, while the XCL231 switches between PWM and PFM modes for optimal performance across load ranges. Both utilize a small DFN3030-10B package and a "cool post type" design for superior thermal and electrical conductivity via internal copper posts.
Parts used in the XCL230/XCL231 Project:
- XCL230 Series converter
- XCL231 Series converter
- Integrated inductor
- Synchronous rectification circuit
- DFN3030-10B package
- External resistance components
- Cool post type package
- Copper posts
Torex Semiconductor Ltd. has launched the XCL230/XCL231 as a new series of low supply current, 36V, 600mA step-down dc-dc converters with integrated inductors. Integrating the coil makes for easier circuit board layout and minimizes malfunction and noise from the component and wiring layout.
The input voltage range is 3.0- to 36-V, the switching frequency is 1.2MHz, and a synchronous rectification circuit is used to achieve a stable power supply at high efficiency. The DFN3030-10B (3.0×3.0, h=1.6mm) package is used for a small package size.
The XCL230 Series fixes the operation frequency using pwm control to suppress output ripple voltage. The XCL231 Series automatically switches between pwm and pfm control to reduce loss by lowering the operation frequency during low loads to achieve high efficiency across the entire range from low to high loads. A 0.75V standard voltage supply is built in, and the output voltage can be set to 1.0V to 5.0V using an external resistance.
The “cool post type” package used in XCL230/XCL231 series allows the upper coil to be connect to the PCB with low resistance in both electricity and heat by penetrating the Cu post inside. Low resistance and high heat dissipation can be realized.
Read more: 36V, 600MA DC-DC CONVERTERS WITH INTEGRATED INDUCTORS
- What is the input voltage range?
The input voltage range is 3.0 to 36 volts. - How does the XCL231 improve efficiency at low loads?
It automatically switches between PWM and PFM control to lower the operation frequency during low loads. - Does the device use an external inductor?
No, it features integrated inductors to simplify circuit board layout. - What is the switching frequency?
The switching frequency is 1.2 MHz. - Can the output voltage be adjusted?
Yes, the output voltage can be set from 1.0V to 5.0V using an external resistance. - What type of control does the XCL230 use?
The XCL230 fixes the operation frequency using PWM control to suppress output ripple voltage. - Why is the cool post type package beneficial?
It allows the upper coil to connect to the PCB with low resistance for both electricity and heat via penetrating copper posts.
