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CVA2415 Datasheet(PDF) 3 Page - Calogic, LLC |
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CVA2415 Datasheet(HTML) 3 Page - Calogic, LLC |
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3 / 4 page 
APPLICATION INFORMATION The CVA2415 is a high voltage triple CRT driver suitable for VGA, Super VGA, IBM® 8514 1024 x 768 non-interlaced display applications. The CVA2415 features 80V operation and low power dissipation. The part is housed in the industry standard 11 lead TO-220 molded power package. The heat sink is floating and may be grounded for ease of manufacturing and RFI shielding. Thermal Considerations The transfer characteristics of the amplifier are shown in Figure 2. Since this is a class A input stage, power supply current increases as the input signal increases and consequently power dissipation also increases. Average dissipation per stage is 1.8W, increasing to 3.2W at minimum output voltage. The CVA2415 cannot be used without heat sinking. Figure 2 shows the power dissipated in each channel over the operating voltage range of the device, Typical "average" power dissipation with the device output voltage at one half the supply voltage is 1.8W per channel for a total dissipation of 5.4W package dissipation. Under white screen conditions, i.e.: 15V output, dissipation increases to 3W per channel or 9W total. The CVA2415 case temperature must be maintained below +100 oC. If the maximum expected ambient temperature is +50 oC, then a heat sink is needed with thermal resistance equal to or less than: Rth = (100 − 50oC) 9W = 5.5oC/W The Thermalloy #6400 is one example of a heatsink that meets this requirement. The output of CVA2415 is not short circuit proof. Any resistance to V + or Ground should be > 600Ω. CVA2415 CORPORATION FALL TIME 10ns/DIV 20V 80V BANDWIDTH 100 MHz 110 0dB RISE TIME 10ns/DIV 20V 80V FIGURE 3. FIGURE 2. CVA2415 DC Characteristics CALOGIC CORPORATION, 237 Whitney Place, Fremont, California 94539, Telephone: 510-656-2900, FAX: 510-651-1076 INPUT VOLTAGE 0 60 90 35 7 14 6 2 50 80 40 70 30 20 10 VOLTAGE POWER |
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