Saturday, June 15, 2024

ROHM Establishes QuiCur to Improve Load Transient Characteristics of LDOs And Switching Regulators

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ROHM recently unveils QuiCur, a technology developed to improve the Response Performance of Power Supply ICs used as DC/DC converter ICs and LDOs. The response performance involves voltage stability and response speed of subsequent stages. This technology is said to simplify the power supply circuit design by providing stable operation even with fewer external components which will reduce the mounting area thereby reducing the size of the product.

Power Supply ICs are used in closed loops to achieve a stable power supply. These ICs include a feedback circuit that monitors the output voltage and compares it with an internal reference voltage. A faster response makes it possible to reverse changes in the output voltage caused by fluctuations in input voltage and/or load current in a shorter time. But a very small response time can cause the circuit operation to become unstable and the output voltage to oscillate. The company claims that incorporating the QuiCur Technology in power supply ICs makes it possible to achieve the ideal performance without causing instability in feedback circuits.

Advantages of employing QuiCur Technology

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  • Reduces the number of capacitors along with board mounting area.
  • Easily achieves stable operation even when specifications change.

Combining QuiCur with Nano Cap for a stable control

Nano Cap technology by ROHM claims to minimize the parasitic factors due to wiring and amplifiers, furthermore, it provides stable control of the linear regulator output by improving response in analog circuits. QuiCur technology is said to reduce the output capacitance to the order of μF and combining it with Nano Cap technology will further reduce the capacitance ensuring stable operation with just a 100nF capacitor at the MCU side.

The company plans to ship QuiCur equipped DC/DC converter ICs in April and LDOs in July of this year.


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