CURRENT ISSUE
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Feature Article
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Issue #206 September
2007
Smart Power
An Intelligent Power Supply for Embedded Systems
by Alexander Popov & Jordan Popov
Start | Hardware | Software | Calibration | Voltage Presets | Slowly Rising Voltage | Slowly Falling Voltage | Short Time Test | Periodcal Linear Voltage | Periodical Voltage Drops | Future Development | Sources & PDF
| PC = VPLUS × IMAX, W | 2 | 5 | 10 | 15 | |
| qMAX = 45°C qMAX = 113°F |
S, cm2 | 35 | 100 | 220 | 400 |
| S, inch2 | 5.4 | 16 | 34 | 62 | |
| qMAX = 60 °C qMAX = 140°F |
S, cm2 | 50 | 125 | 300 | 600 |
| S, inch2 | 7.8 | 20 | 47 | 93 | |
| Table 1—The area of the heatsink required for transistor Q1 depends on the maximum current drawn, maximum ambient temperature expected, and VPLUS. The casing of the device can also be used as a heatsink if it’s made of metal. | |||||
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