Part Number: LM3429-Q1 Other Parts Discussed in Thread: LM3429 , TPS92691 , TPS92690 , TPS92692 Usually how we design a π EMI filter and how to choose the size, value of the inductor and capacitors? Do we design the EMI filter before finishing the schematic…
Well spotted! I can only claim incpompetence. Here's channel 1 for comparison. Channel 2 is the one with the issue. I will measure the currents and get back to you.
I don't think it's a manufacturing fault, as they all seem to do it (we've built…
Clinton-san
Thank you for reply.
For example, LM3424 have internal FET drive circuit and PWM oscillator on DDRV pin.
(datasheet page 11)
But LM3429 have not these circuit (and DDRV pin), simply external FET control ON/OFF only.
If LM3429 have any…
Part Number: LM3429 Other Parts Discussed in Thread: LM3421 Dear Sir or Madam,
I am designing a buck-boost LED driver using the LM3429. PWM is used. Design is similar to the evaluation board. However, we would like to enter a low power state when LED…
Part Number: LM3429 Hi,
I was wondering if there are any design tools/equations one can use for calculation of values when using LM3429 in a SEPIC mode? The datasheet contains a SEPIC schematic at the end with values, but doesn't provide any explanation…
Part Number: LM3429 Issue: Changing Output Power Range.. Design Path: Circuit design was build following the design guide lines establishing using the WeBench circuit simulator. Circuit drives multi strings of 5 CREE series LED's, at a design spec. of…
Part Number: LM3429LM3429 is used for both standing light and flashing light functions:
By controlling 3-pin analog signal and 7-pin PWM signal to achieve two conditions,
1: chang liang;We lower the PWO, that is to say, make the 7-pin voltage greater…
Other Parts Discussed in Thread: LM3429-Q1 , LM3429 Our customer consider to use LM3429-Q1.
Their questions are following.
1.Does tPULSE means PWM high pulth min time?
2.Please let us know detection time of VCCUVLO and UVLO.
Part Number: LM3429-Q1 Hello,
I'm configuring my already built board using the LM3429-Q1 in the buck-boost topology with parallel LED strings. Baring any failed strings or thermal issues (I've solved those issues) here's my specs (My FET & Diode have…
Part Number: LM3429 Other Parts Discussed in Thread: OPT9221 , HI Subhash Chandra Sadhu
Test environment
- OPT8241-CDK-EVM kit is used and IR LED circuit is in use Refer to attached circuit
- OPT8241-CDK-EVM Using the firmware for the built-in laser and…