I can not find any product that meets my requirements. Can you supply a customized converter for me?
In addition to the standard ranges shown in this data book, Favotek has the capability to produce custom DC/DC converters designed to your specific requirements. In general, the parts can be quickly designed to meet any input or output voltage requirements within the ranges of Favotek standards products (i.e. up to 48V at either input or output). Prototype samples can also be produced in short timescales. See our application notes for more information or contact Favotek Technical Support.
Why does the On/Off function not work?
Different converters have different on/off control voltages. Please check the datasheets carefully before connecting the on/off pin to ground or +Vin as this can damage the converter. Some on/off pins may require additional external components if driven with a TTL level signal.
Since your products are RoHS compliant, can I assume that they are Lead Free (Pb free)?
RoHS restricts the use of six hazardous materials. One of the restricted materials is Pb (Lead). Lead-free is often used (or misused) to describe RoHS compliant products. However, RoHS compliant products are not completely Pb free as impurities up to 1000ppm (0.1%) are permitted and there is an exemption allowing the use of lead in high melting point solders required for SMD converters (a suitable lead-free high melting point solder did not exist when the regulations were drafted).
A revision of the RoHS regulations is planned in 2010, when it is expected that many of the exemptions will be removed.
Are Favotek parts burn-in during production?
All Favotek parts are burn-in tested in our factory before being shipped to the customer.
What material is used in the metal case package?
Nickel plated copper.
How can I clean these parts included in my board?
As with all electronic devices, strongly reactive agents in hostile environments can attack the encapsulating material and the pins, hence cleaning is recommended with inert solutions (e.g. alcohol or water based solvents) suitable for electronic components and at the temperatures recommended by the cleanser manufacturer.
What is Isolation?
Isolation refers to the electrical separation (galvanic isolation) between the input and the output of the converter. This means that the output of an isolated converter is not linked to the input and any electrical interference, voltage differences and fault currents are blocked. This is extremely important in applications where the output circuit is connected to the ‘real’ world and the main circuit must be separated from anything that happens to the output circuit.
Is required any input or output capacitor?
For normal function, no external capacitor is needed. For EMI filtering, consult our recommendations in our Application Notes.