DP-AMP Sixty One Water Cooling

DP-AMP Sixty One Water Cooling !

Water cooling has been used in the PC sector for many years. So why not equip the new Sixty One with an extremely quiet water cooling system?
It sounds very simple and others have already done it.
As always, perfectionism plays a part, others solder copper pipes onto the copper plate or simply mill a water channel into the copper plate. That may be enough for others, but not for me!

The heat is generated exclusively under the LDMOS, so it must be dissipated quickly from there. To do this, the water does not have to run anywhere but under the LDMOS. If you now want to increase the contact surface between copper and water, you have to think about how you can do this.

At this point, a greeting to all companies, self-appointed experts and copiers!

To increase the surface area, I have milled bars under the LDMOS in the copper, which significantly increases the contact surface. One problem, however, is the water flow, which has to be uniform on all bars. This is very important so that there are no temperature gradients that place an unfavorable load on the LDMOS. Even if it looks nice and simple in the pictures, a simulation is absolutely necessary to achieve this goal. The smallest changes have a major influence.

As the simulation shows, the flow is absolutely harmonious.
The video shows the switch-on moment of the pump.

A sophisticated cooling plate keeps the LDMOS cool and the attenuator in the input also benefits from the water cooling.