AN4544 datasheet(8/35 Pages) STMICROELECTRONICS

8 / 35 page

Datasheet explanation

AN4544

8/35

DocID026535 Rev 1

Datasheet explanation

2.1

Datasheet status

The status of the product development can be:

•

Target data

•

Preliminary data

•

Final data

Target data describes the design goal of a future product to be developed. Values from

target datasheet are useful just for the initial calculations and approximations. The

information and values of a target datasheet cannot be guaranteed for the final product. The

dimensioning of an inverter should be only based on a preliminary or final datasheet.

During the development phase, parts are labeled with the suffix "ES" and they are supplied

with a special document. This kind of samples can be used for preliminary and functional

tests during the early stages of a product development phase. Samples marked as ES are

not liable to product change notification (PCN).

Preliminary data is based on components whose manufacture is close to production. The

difference between a preliminary and a final datasheet is that certain values are still missing,

for example the maximum values. These missing values in the preliminary datasheet are

marked TBD to be defined. Reliability and lifetime are partly, but not finally approved.

Final data is based on final components. Making is based on productive tooling for mass

production. Reliability and lifetime are approved and released. The final datasheet is

completed with values which were missing in the preliminary datasheet. In case of major

changes for products in production, a PCN has to be issued.

2.2

IGBT nomenclature meaning

Figure 4. Nomenclature scheme

AN4544 Datasheet(PDF) 8 Page - STMicroelectronics