Power Supply Solutions for Industrial Applications

12V / 24V  Solutions

Mid-Voltage Power Supply Solutions for MCU and FPGA

There are an almost infinite variety of different Industrial applications, which increasingly require sophisticated electronic solutions for managing process control, manufacturing automation, and energy management to name but a few. 

Many of these systems draw power from a 12V or 24V supply and the designer must often step-down the Voltage using a DC/DC Converter to efficiency power the system electronics at lower Voltage levels.  This is normally a two-stage process with a primary step-down DC/DC doing the initial work and then several secondary POL DC/DC converters are used to distribute the power where needed.

Torex offers various different solutions for industrial applications and below we illustrate a typical power architecture and demostrate how our products can be used.

Application Example

Using Point of Load Micro DC/DC Converters to power MCU or FPGA from 12V or 24V.

Key requirements: 

  • Small solution size, with low EMI performance and excellent power dissipation
  • Ability to cope with input voltage fluctuations
  • Start-up / shutdown sequence
  • Small and high efficiency Step-up for display panel

Recommended Solution:

 

Circuit Block

Torex Series

Key Features
(1) Step-down DC/DC XC9270/71 30V, 300KHz or 500KHz, 2A
(2) Step-down DC/DC XCL201/02 DC/DC with Integrated Inductor, PWM/PFM, 1.2MHz, 400mA, Low EMI
XCL205/06 DC/DC with Integrated Inductor, PWM/PFM, 3MHz, 600mA
XCL211/12 DC/DC with Integrated Inductor, PWM/PFM, 2.4MHz, 2A
(3) RESET IC XC6118 Separate sense pin, Low, Iq, Release delay with external Cd
XC6134 Separate sense pin, adj. hysteresis, Release / Detection delay with external Cd
(4) Step-up DC/DC XC9119 ~19.5V, PWM, 1MHz, 100mA 5V→12V

 

(1) Primary Step-down DC/DC Converter

  • Sufficient input voltage range and output current for various industrial equipment, and easy-to-use frequency (XC9270/71).
     
    • With the VIN terminal absolute maximum rating of 36V and a maximum surge voltage of 46V (during 400ms), the XC9270/71 can operate in demanding industrial applications that require protection against transient surge voltages


(2) Secondary Step-down DC/DC Converter for powering the MCU / FPGA / Sensor

  • Stable operation, small size and low EMI are realized by placing Micro DC/DC Converts with integrated Inductors (XCL201/02, XCL205/06, XCL211/12) close to the Point of Load on the PCB.


(3) Voltage detector for monitoring the 12V/24V input 

  • 12V/24V input monitoring using a Voltage detector with separated sense pin.
     
  • RESETB signal monitoring at 12V/24V input voltage drop is output to the MCU / FPGA, and after the shutdown process, the DC/DC can be stopped according to the sequence using the RC delay. It can be easily configured using the CMOS output type of the voltage detector (XC6118).
     
  • Any detect / release voltage can be set by using the external adjustable hysteresis function.  In addition, it supports not only release delay but also detection delay. (XC6134).

 

 

(4) Step-up DC/DC for various input or output devices such as OLED / LED

  • Small size Step-up DC/DC for OLED / LED etc. (XC9119)

 

...Powerfully Small!
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