Zhou,
For the UCC2813-0, UCC2813-2 & UCC2813-3, Dmax = 100%, for these versions OUT pin Fsw= Fosc.
For the UCC2813-1, UCC2813-4 & UCC2813-5, Dmax = 50%, implemented using an internal toggle flip-flop. So for these versions, Fsw = 0.5 * Fosc.…
Part Number: UCC2813-2-Q1 Other Parts Discussed in Thread: UC2842 Dear Sir,
could you help check Gain Margin and Phase Margin of UCC2813-20Q1?
please refer below specification and schematic(excel).
Specification is below
Input Voltage : 250Vdc~420Vd…
Part Number: UCC2813-2 Hi Experts:
My customer is using the UCC2813-2 for the power design , the turn on threshold is 12.5V, however, the maximum rating of VCC is 12V , so I have two questions:
1) The start up voltage should be above the 12.5V which will…
Other Parts Discussed in Thread: UCC2813-5 , TLV431 , UCC2813-1 , UCC2813-4 Dear all
I will develop the product using UCC2813-5. (Input : AC 50V or DC 50V +/- 30% OutPut : 5V / 12A (60W) A circuit diagram based on the circuit proposed by TI Webench has been…
Hello again!
Parts arrived, so I made a few small changes:
1. Replaced the UCC2813 part with UCC2813QDR-2Q1
2. Replaced C11, the 6.8nF snubber cap, with a film cap
3. Added a 1.0uF capacitor in parallel with the output capacitors C19 and C24
... R2+R3…
Other Parts Discussed in Thread: SG2524 , UC28025 , UCC28950 , UCC2895 Dear All,
I have two questions about IC numbers:
1) what is the meaning of prefixes, ie UCC, UC, SG, TL? ( for example SG2524 or UCC2813 )
2) what is the meaning of digits after prefixes…
I just got back in to see if there were any comments added and noticed that schematic I cut and pasted is not showing up. I'm trying again by converting the Webench output to a Word document.
WEBENCH ® Design Report
Design : 14 UCC2813DTR-…
Other Parts Discussed in Thread: UCC28911 , UCC28740 , LM5023 , UCC2813-2 , UCC2813-0 , UC3842 , UCC2800 , UCC2802 , UCC28C42 , UCC28C43 Dear all.
I think about the multi-output by flayback. (DC3.3V/450mA, DC15V/10mA, DC-15V/10mA, DC24V/30mA) Our customer made the…
Hello Edward,
Based on this rather limited set of requirements, the tentative answer is YES.
Can you please clarify if the input voltage Vin is AC or DC?
If it is DC, then yes the UCC28740 can readily support that spec since the HV input is rated…
Other Parts Discussed in Thread: UCC2813-1 Hi,
I have designed Multi-output flyback power supply by using UCC2813-1 PWM IC,
Input and output specifications are as follows
Vinput- 16V-40V
Vout-5V@5A,+15V@0.75A,-15V@0.75A
Switching frequency -200kHz
The converter…