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FGB30N6S2D Datasheet(PDF) 8 Page - Fairchild Semiconductor |
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FGB30N6S2D Datasheet(HTML) 8 Page - Fairchild Semiconductor |
8 / 12 page ©2001 Fairchild Semiconductor Corporation FGH30N6S2D / FGP30N6S2D / FGB30NS2D Rev. A Handling Precautions for IGBTs Insulated Gate Bipolar Transistors are susceptible to gate-insulation damage by the electrostatic discharge of energy through the devices. When handling these devices, care should be exercised to assure that the static charge built in the handler’s body capacitance is not discharged through the device. With proper handling and application procedures, however, IGBTs are currently being extensively used in production by numerous equipment manufacturers in military, industrial and consumer applications, with virtually no damage problems due to electrostatic discharge. IGBTs can be handled safely if the following basic precautions are taken: 1. Prior to assembly into a circuit, all leads should be kept shorted together either by the use of metal shorting springs or by the insertion into conduc- tive material such as “ECCOSORBD™ LD26” or equivalent. 2. When devices are removed by hand from their carriers, the hand being used should be grounded by any suitable means - for example, with a metallic wristband. 3. Tips of soldering irons should be grounded. 4. Devices should never be inserted into or removed from circuits with power on. 5. Gate Voltage Rating - Never exceed the gate- voltage rating of VGEM. Exceeding the rated VGE can result in permanent damage to the oxide layer in the gate region. 6. Gate Termination - The gates of these devices are essentially capacitors. Circuits that leave the gate open-circuited or floating should be avoided. These conditions can result in turn-on of the device due to voltage buildup on the input capacitor due to leakage currents or pickup. 7. Gate Protection - These devices do not have an internal monolithic Zener diode from gate to emitter. If gate protection is required an external Zener is recommended. Operating Frequency Information Operating frequency information for a typical device (Figure 3) is presented as a guide for estimating device performance for a specific application. Other typical frequency vs collector current (ICE) plots are possible using the information shown for a typical unit in Figures 5, 6, 7, 8, 9 and 11. The operating frequency plot (Figure 3) of a typical device shows fMAX1 or fMAX2; whichever is smaller at each point. The information is based on measurements of a typical device and is bounded by the maximum rated junction temperature. fMAX1 is defined by fMAX1 = 0.05/(td(OFF)I+ td(ON)I). Deadtime (the denominator) has been arbitrarily held to 10% of the on-state time for a 50% duty factor. Other definitions are possible. td(OFF)I and td(ON)I are defined in Figure 27. Device turn-off delay can establish an additional frequency limiting condition for an application other than TJM. td(OFF)I is important when controlling output ripple under a lightly loaded condition. fMAX2 is defined by fMAX2 = (PD - PC)/(EOFF + EON2). The allowable dissipation (PD) is defined by PD =(TJM -TC)/RθJC. The sum of device switching and conduction losses must not exceed PD. A 50% duty factor was used (Figure 3) and the conduction losses (PC) are approximated by PC =(VCE xICE)/ 2. EON2 and EOFF are defined in the switching waveforms shown in Figure 27. EON2 is the integral of the instantaneous power loss (ICE x VCE) during turn-on and EOFF is the integral of the instantaneous power loss (ICE xVCE) during turn-off. All tail losses are included in the calculation for EOFF; i.e., the collector current equals zero (ICE = 0) ECCOSORBD is a Trademark of Emerson and Cumming, Inc. |
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