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kura
1 month ago
Power management
Power management forum
UCC24636: SR timing delay
TI Thinks Resolved
Part Number:
UCC24636
Our customer found folloing SR timing delay waveform. (delay time: about 550ns) <Condition> IN:DC240V-DC340V OUT:13.5V/4A Also they didn't found low Vin and light load condition. CH1...
kura
2 months ago
Power management
Power management forum
UCC24636: DRV ON time
TI Thinks Resolved
Part Number:
UCC24636
Our customer consider to use
UCC24636
with Low-Side SR Configuration. Please see attched waveform. 2541.waveform.xlsx 1.Is this waveform normal .? 2.Can they extend DRV ON time ? Please let us know how to extend DRV ON time...
kura
5 months ago
Power management
Power management forum
UCC24636: RVPC,RVSC
TI Thinks Resolved
Part Number:
UCC24636
Our customer consider to use
UCC24636
with High-side SR configuration with Bias winding. Please check attached fole and advise about RVPC,RVSC.
UCC24636
.xlsx
Lei wang
over 2 years ago
Power management
Power management forum
UCC24636: UCC24636
TI Thinks Resolved
Part Number:
UCC24636
Hi Sir: I use the
ucc24636
as auxiliary power controller, Vout =12V.. And I use the excel
UCC24636
-Calc to set the external resistance. I have a resistor Q1 in parallel and Q1 is 1200V MOSFET. it Out of work,The Vout i can get...
Benjamin Lough
over 2 years ago
Power management
Power management forum
RE: UCC24636: possible to use for output voltage Vout = 31V ?
Hi Martin, You could a resistor + zener to clamp the maximum voltage on the VDD pin. You will also want to make sure the VPC and VSC pins do not exceed their max voltage rating as well (abs max rating of 4.5V for both pins) Another option is to...
Chirag Panchal2
8 months ago
Power management
Power management forum
RE: Selection of isolated flyback controller IC
Hi Eric, Thank you for your detailed explanation. Does UCC28740 provide short circuit protection like UCC28742 as I have not found anything in its datasheet? In addition, I have recently come across the above design and wondered what is the benefit...
Ulrich Goerke
9 months ago
Power management
Power management forum
RE: UCC24636: DCDC CONVERTER, FLYBACK, 80-160V IN, 120V OUT, 1A, WEBENCH
Hello Jim, Thank you for your interest in the
UCC24636
SR controller (and UCC28740 flyback controller). You are correct; the
UCC24636
cannot be directly powered from a 120V source. Nor can the 100-V MOSFET, and also not the shunt regulator. I...
Hong Huang
over 1 year ago
Power management
Power management forum
RE: UCC28740: Device not starting, Gives one pulse per second
Can you also update the schematics and send the updated to me? The one you sent to me does not show the secondary diode to
UCC24636
.
Jaden Ning
over 1 year ago
Power management
Power management forum
RE: Inquire TI device to replace LTC3825
Hi Edward, We have lots of PSR controllers to replace LTC3825, Such as UCC28704 and UCC28730, if customer want a ultra low standby power UCC28730 is recommended . otherwise , UCC28704 is proposed. both of them don't have SR signal on primary side...
Yoshwa
over 4 years ago
Power management
Power management forum
UCC24636 : How does it operate when entered into CCM mode?
TI Thinks Resolved
Our customer is designing a
UCC24636
application. He asked how dose UCC26363 work when entered into the CCM mode condition caused by an abnormal operation such as an over load. Of cause it has been designed in DCM mode condition. What kinds of behaviors...
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