Low Noise µModule Regulators for RF and Imaging Applications
The Switch-mode power supplies as voltage supplies are extensively used in analog or digital devices. Various applications have different requirements for their power supplies, some of the subsystems in communications, imaging, test, and measurement applications are highly noise-sensitive and they need to be compliant with EMI (electromagnetic interference) standards. In these kinds of applications, a DC-DC converter with extremely low noise or harmonics content that meets a specific EMI standard for those applications is required.
In this video, we will demonstrate Analog Devices µModule power products with the silent switcher technology provide efficient, reliable, and small-size solutions for these (noise-sensitive) applications.
The main drawback of Switch-mode power supplies is that they have higher noise/harmonic contents and cause electromagnetic interference. This is due to high dv/dt on the switch node, and high di/dt in the hot loop. The high di/dt combined with the parasitic RLC of the hot loop will lead to an oscillation and hence EMI interference.
The main drawback of Switch-mode power supplies is that they have higher noise/harmonic contents and cause electromagnetic interference. This is due to high dv/dt on the switch node, and high di/dt in the hot loop. The high di/dt combined with the parasitic RLC of the hot loop will lead to an oscillation and hence EMI interference.
µModule regulators with Silent switcher technology that deals with the causes leading to EMI
- Hot loop’s ESR and ESL are substantially reduced by replacing the bond wire of the IC with a copper pillar flip chip technology.
- Two smaller hot loops are used instead of a single large hot loop. These two small hot loops with contradicting magnetic fields, confine the field in a specific area and prevent electromagnetic interference to the nearby electronics. The total ESL of these two loops is smaller than the ESL for an equivalent large hot loop.
The LTM4658 is a low Vin (up to 5.5V) with 1A step-down silent switcher µModule® regulator with 4x4mm.
Low Noise µModule Regulators for RF and Imaging Applications
In this video, we will demonstrate Analog Devices µModule power products with the silent switcher technology provide efficient, reliable, and small-size solutions for these (noise-sensitive) applications.
The main drawback of Switch-mode power supplies is that they have higher noise/harmonic contents and cause electromagnetic interference. This is due to high dv/dt on the switch node, and high di/dt in the hot loop. The high di/dt combined with the parasitic RLC of the hot loop will lead to an oscillation and hence EMI interference.
The main drawback of Switch-mode power supplies is that they have higher noise/harmonic contents and cause electromagnetic interference. This is due to high dv/dt on the switch node, and high di/dt in the hot loop. The high di/dt combined with the parasitic RLC of the hot loop will lead to an oscillation and hence EMI interference.
µModule regulators with Silent switcher technology that deals with the causes leading to EMI
- Hot loop’s ESR and ESL are substantially reduced by replacing the bond wire of the IC with a copper pillar flip chip technology.
- Two smaller hot loops are used instead of a single large hot loop. These two small hot loops with contradicting magnetic fields, confine the field in a specific area and prevent electromagnetic interference to the nearby electronics. The total ESL of these two loops is smaller than the ESL for an equivalent large hot loop.
The LTM4658 is a low Vin (up to 5.5V) with 1A step-down silent switcher µModule® regulator with 4x4mm.
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