Part Number: TPS61169 Dear Sir/Madam,
We are using TPS61169 IC in our design, Vin=5V and Vout required in 21V load required 40mA current. Below is the circuit kindly review the circuit and if any improvements please let us know.
TPS61169-circuit.pdf
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Part Number: TPS61169 Hi Sir,
My customer asked some questions about the TPS61169, does it support the PWM dimming frequency at 250Hz?
If it can support the 250hz dimming, what is the range of PWM dimming signal duty cycle?
Follow the datasheet mention…
Part Number: TPS61169 We are trying to drive some higher current UV LEDs. Based on the data sheet, with a sense resistor of 0.58 ohms we should be getting 352mA
However when measured it is more like 150 mA max.
It appears that there is too much noise…
Part Number: TPS61169 The TPS61169 datasheet includes recommended inductors, which makes me think that there might be reasons for similar inductors to not be suitable? Specifically, the recommended inductors are not easily available to me so I'm wondering…
Hi Zoe,
This looks like a DCM operation, so the duty cycle will not be stable. With larger load will lead the IC in CCM mode and will get a stable duty cycle.
BR
Patrick
Hi Patrick,
Is it even difficult to see the difference between TPS61042 and TPS61169 for the same LED?
Customers EE is HVAC controller.
Best regards, Yuto
Part Number: TPS61169 Hi,
I would like to know If i power the vin of tps61169 with 3.3V, and the CTRL pin with a pwm signal voltage of 1.8V, it works or not works.
I read the datasheet and in page 10 is written: "The enable rising edge threshold voltage…
Part Number: TPS61169 Hello,
I asked about the unstable switching of TPS61169 in the thread below. I changed the output capacitor from 4.7uF to 1uF and measured it. The result is shown below. It's worse than before the change. I haven't changed the inductor…
Part Number: TPS61169 I have designed the board using the TPS61169DCKR with the Rset value to 816mohm , the expected output current (ILED) will be 250 mA. However, the measured ILED is far lower than the expected value, i am getting 120mA only. I have…