I built a 79 W led driver to operate at 39.5V at 2Amps with 10 percent peak to peak ripple current. I am having a problem with the fact that the LED is having about .7 seconds off and .2 seconds on. What should I specifically look for?
Other Parts Discussed in Thread: TPS92075 In the buck-boost option as shown in the User guide SLVU813 evaluation board (inductor based), since there is no open load protection, I have designed in a simple zener/resistor to bias a pnp transistor, and with…
Hi
Im having a little trouble with the output voltage as per the PMP6009 reference design. I would like the output voltage to be user-set, from anything between 35V to 80V. Shouldn't a change to the COFF frequency be enough for a variable voltage output…
Other Parts Discussed in Thread: TPS92075 LED Driver sheet's "On-time Clamp Circuitry" of "TPS92075 Design Calculator" differs from the circuit diagram of a data sheet. May I judge that the circuit diagram of a data sheet is right? Moreover, may I apply…
Hi Tim, actually i'm working with TPS92075 in order to create a custum electronic board for LED tube.
The power that i need for leds is 23W, i've two string, of 40 leds in series, connected togheter in parallel. In each string the current is 90mA so…
Other Parts Discussed in Thread: TPS92075 The TPS92075 datasheet COFF max rating is shown as 6V. During normal operation, the COFF is charged to 1.2V and pulled down. The application circuit in the datasheet and the EVAL(SLVU813) board shows a direct…
Other Parts Discussed in Thread: TPS92075 Hi Sirs,.
I have no ideas about TPS92075 OVP description in datasheet "If the LED string is opened the auxiliary VCC rises and reaches the VCC(OVP) trip point. This action disables and grounds the gate pin,…
The eval board (slvu813) shows the T-filter after the bridge rectifier. In order to meet C62.41 class A 2.5kv 100khz transients I would need to include an MOV (fuse-MOV) before the bridge rectifier. Would this be sufficient to meet C62.41 transients?…
Part Number: UCC29910A Other Parts Discussed in Thread: TPS92075 Tool/software: When Vin is set to 100V in the design calculator and VBULK is set to 50V, CBULKH becomes negative. Is it possible to set a lower value for VBULK?
Kanji-san
PMP3672 configures TPS92210 in an inverting buck topology. TPS92210 is designed for an isolated flyback, so even though it's non-isolated this design still requires an optocoupler to operate.
We recommend that they use one of our controllers…
