Part Number:TPS40170
I am looking for information on modifying or developing a high precision, low noise, variable, switched mode constant current source. We have made several using TPS40170 or LM5176 but have never achieved excellent performance. Most of the designs provide 4-8% ripple. We will consider other controllers.
Specifically, our requirements are:
Vin range: 28V +/- 5%
Io: 0-15A linearly controllable by voltage
Io ripple: <0.5% of Io
Vo compliance: 10 - 22V
Efficiency: > 98%
Regards
Ken