12/6/2023 0 Comments What is 2.7 slot heatsink mean![]() ![]() Freshly charged, that two-cell battery will be at approximately 8.4V, which means I’m setting myself up to dump 16.8W (P = I*V where I = 2A and V = 16.8V) into my FET. ![]() I’m not going to get into the circuit design required to use that as a constant current load here- if you’re really interested you can flip over to the digital load tutorial for more details.Īt any rate, for this application, I’ve set my goal as being able to discharge a two-cell LiPo battery at up to 2A constantly. The core of the load is an RFP30N06LE N-channel MOSFET. Most datasheets will tell you what you need to know to come up with a rough estimate (accurate to within perhaps 50%) of how much heat sinking you really need for your application.Īs an example, I’m going to use a circuit that I’ve developed for another tutorial I’m working on- a digital constant current load for discharging batteries so I can characterize their power capacity. But fear not! It’s not as bad as all that. If you’re like me, at first glance, this problem seems intractable and you really start wishing you’d taken that thermodynamics course in college. But how much heat sinking is needed? When do you need a modest folded metal heat sink versus a whopping milled-out-of-aluminum heat sink versus a mondo great fins-and-fan heat sink? In a previous tutorial, we discussed the need for a heat sink in situations where a device is expected to dissipate a large amount of heat. ![]()
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