Part Number: TPS40211EVM-352 Is there a known issue with this development PCB? When using PWM, a audible ringing is coming from the circuit.
The output is not stable with a LED load, Cannot run more then LED forward voltage of 25V. Output collapses…
Part Number: TPS40211EVM-352 Other Parts Discussed in Thread: TPS40211 , TPS40210EVM , LM25085 We are testing a TPS40211 evaluation board and have the current set at .55A by changing the resistor to .47 ohm. This works from 25C to 100C, constant current…
Part Number: TPS40211EVM-352 Hi Support,
Customer is using TI TPS40211EVM Eval Board to modify to their specification.
1) Output Constant Current at 300mA and DC55V max,
2) Dimming capability with Direct PWM DC24V input without additional PWM signal…
Hi Danilo,
Sorry for the long delay. So customer build his own design based on webench and the datasheet. In general, it is always good to see the full power stage within the schematic, as it helps for checking the compensation, output capacitance and…
Other Parts Discussed in Thread: TPS40211 , TPS40211EVM-352 Hello Team,
We have a customer with TPS40211 IC issue, he wants to test the evaluation module TPS40211EVM-352 for input voltages of 8-30V and 200mA-1400mA output current.
Please help me…
Ford,
Regarding the issue with Equation 59:
1) Do you believe the symbolic equation (equation 59) is incorrect or do you believe there is an error in the numeric solution (Equation 60)?
Regarding Example 2 for TPS40211 LED drive:
This example…
There is a higher voltage / higher current constant current source system also available. The TPS40211EVM-352
http://focus.ti.com/docs/toolsw/folders/print/tps40211evm-352.html
The TPS40211 controller is implimented as a boost converter with external…
Hi Emil,
Regarding the TPS40211EVM-352 for LED driver, the inductor is sized to make sure that the converter always runs in CCM to simplify the compensation design. The worst case is when the input current is at the minimum level under high line, low…
