By Vineet Pancholi and Dennis Dinawanao

Metallic Oxide Silicon Subject Impact Transistors (MOSFETs), Insulated Gate Bipolar Transistors (IGBTs), Bipolar Junction Transistors (BJTs), diodes, and utility particular multi-transistor packaged modules are a few of the extra standard discrete merchandise. Switches management the movement of present inside a circuit. MOSFETs are a constructing block of most electronics gear. There was a pointy enhance in battery powered gadgets. Computer systems, smartphones, wearable devices, hand-held gadgets, and migration of the car’s inside combustion engine to a battery powered motor pushed engine have resulted within the enhance of discrete energy merchandise.

Fig. 1: Si, SiC, and GaN.

Conventional constructing materials used for energy gadgets was Si (silicon). SiC (silicon carbide) and GaN (gallium nitride) have penetrated as constructing supplies for energy discrete merchandise resulting from greater band hole, energy, switching frequencies, and smaller sizes and decrease switching and conduction losses. Si to SiC/GaN based mostly fabrication applied sciences have advanced over the previous decade and a half. IDMs have 1000’s of variants of those merchandise. All gadget datasheet specs, static and transient attributes have to be examined in manufacturing earlier than transport to the top buyer. There are greater than a dozen check gear producers. The test equipment consists of ATE (Computerized Take a look at Gear), gadget prober, handler, and the check {hardware}. Typical ATEs embrace supply and measure devices that cater to a spread of voltages and currents to check the whole manufacturing check listing.

Amkor energy packages

Tabulated under, are a few of Amkor’s standard energy discrete packages. Extra knowledge and particulars about these packages can be found on Amkor’s website.

Manufacturing check

Take a look at movement

The standard IC manufacturing check movement is proven under in determine 2.

Fig. 2: Typical IC manufacturing check movement.

For energy discrete merchandise, wafer probe, burn-in and system degree check insertion check steps have much less reputation for mature fabrication applied sciences. Since a few of the SiC and GaN based mostly applied sciences could also be newer, clients have a tendency to incorporate manufacturing qualification and burn in checks. System degree testing will not be required, as a result of the manufacturing check listing consists of parametric check of all related attributes of the drain & switch traits.

(A) 

(B) 

Fig. 3: Instance drain (A) and switch (B) traits from NTMFS4C06N (onsemi) MOSFET.

Take a look at listing, manufacturing check rigor & ATE

Typical DC check parameters included within the buyer’s check listing embrace: IGSS – gate to supply leakage present, IDSS – drain to supply leakage present, VGS(th) – gate to supply threshold voltage, RDS(on) – drain to supply resistance at ON state, GM – trans conductance achieve, BVDSS – breakdown drain to supply voltage.

Typical AC check parameters included within the buyer’s check listing embrace: Cg – gate capacitance, Rg (ESR) – gate resistance, resistive switching (Tdon/off, Trise/fall), unclamped inductive switching (UIS w/VDs & IDs measure), Qg – gate cost inductive switching, diode reverse restoration (Trr) inductive switching.

Energy merchandise for automotive applications require steady operation in stringent environments, like large temperature and voltage ranges of operation. Amkor manufacturing check factories have a long time of expertise testing energy components and are readily geared up to deal with the long run manufacturing check necessities. For greater voltage and present and quicker switching speeds present in SiC and GaN based mostly merchandise, Amkor is working intently with automated check gear (ATE) distributors to develop and deploy new check platforms with newer devices that cater to the broader vary of operation.

Dennis Dinawanao is a supervisor for check at Amkor Know-how Philippines.

Vineet Pancholi

  (all posts)

Vineet Pancholi is a senior director of check expertise at Amkor.



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