Part Number: TPS54201 I am using a TPS54201 LED driver. The driver worked fine at first. However, after the power (24V) had been cycled about 30 times, the circuit started to draw excessive current from the power supply (the power supply current limited…
Part Number: TPS54201 Hello, The datasheet says “To minimize this ripple, the suggested PWM signal frequency is 10 kHz or higher, such as 50 kHz.”. What is the maximum PWM signal frequency that can be used? Best regards, K.Hirano
Part Number: TPS54201 Hi,
My customer is using the TPS54201 to do the test, and they found the output is wrong as below show. No matter how the duty cycle of the input PWM changes, the output waveform is similar to the attached picture as below, causing…
Part Number: TPS54201 Dear Sirs,
My customer found their TPS54201 output will have 10KHz noise sound. The sound seem came from inductor or capacitor!
Below is schematics and waveform.
Customer use DC 3.3V for PWM input for test now.
Can you help…
Part Number: TPS54201 Hi all. I have implemented a similar H-bridge driven bidirectional current control for a TEC. I am wondering if it is necessary to provide a catch diode around the inductor or other transient protection for the TPS part in the event…
Part Number: TPS54201 Hello,
What are the advantages and disadvantages of using PWM dimming vs analog dimming?
Based on my test with the eval board ( TPS54201EVM-818 ), I found out that analog dimming is much more efficient, no audible noise since…
Part Number: TPS54201 Hi,
Application Report SLUA979A describes a circuit using the TPS54201 to drive a Peltier Module (TEC) in constant current mode as opposed to PWM mode. However, the circuit using the TPS54201 is unidirectional and can therefore…
Part Number: TPS54201 Other Parts Discussed in Thread: LM36010 Dear Team,
Do we have any led driver can meet spec as below?
1 Channel
Vin 3V (from battery)
Iout 500mA
our customer want to without external diode as below.
Many Thanks
J…
Part Number: TPS54201 Hello team,
My customer has a question about the failure mode of the LED driver TPS54201.
Is it possible to consider a failure mode in which the load (LED) continues to flow at the designed upper limit current value when this…
Part Number: TPS54201 Dear team,
Hello, i am trying to understand the concept of this chip but having trouble with calculting the efficiency of the whole schematic.
My input is 12.8~14.4V/3.3A(4*LFP cells) and target to output 3.3V/1.5A to light one…
