Part Number: I am using uc3843a in my flyback converter.
for now, I'm giving supply to ic with potential divider from the supply of 50 volts which is also input to the flyback.
the converter is working but voltage to Vcc is dropping down to around…
Part Number: UC3843A Dear TI
UC3843A is used as flyback, the output voltage is non-isolation, input :11~120VDC
At light load ,increaing input voltage, the output PWM frequency is decreased, less than Oscillator frequency .
for example, the input voltage…
Part Number: UC3843A Other Parts Discussed in Thread: UCC38C43 , UC3843 Hi Team,
May I know TI have can compare BCD AP3843 device?
Loos TI UC3843A spec show start current only 50uA!!
Part Number: UC3845A Other Parts Discussed in Thread: UC3845 , UC3843 , UC3842 , , UC3843A Non-isolated HV DC/DC (24VDC to 600VDC) with voltage closed loop control does not hold load. Output voltage starts dropping with increased load even though DC is about…
Part Number: UC3843A Other Parts Discussed in Thread: UC1843 I want to configure my UC1843 to run as voltage mode. Figure 23 of the data sheet gives an example but I do not know how to calculate the resistors.
www.ti.com/.../uc1843.pdf
Part Number: UC3843A Hi. I am making a boost DC/DC converter from 12VDC to 27.8VDC@100mA with adjustable output voltage from 24v@30mA to 30@160mA.
Power source - battery. Depending on the level of charge, it produces a different voltage. When fully charged…
Other Parts Discussed in Thread: UC3843A Hello,
I'm using the UC3843A PWM-controller for buck DC/DC.
How do i have to design the loop compensation circuit of the error amp?
The output filter components: L= 100uH ; C = 680uF (ESR=0.2).
=> pole at…
Hi Team,
Is there any guarantee range for this maximum duty vs Rt figure?
For example, is Rt is set as 3.1kohm, the maximum duty should be 85% from the figure of datasheet page7.
And what is the range? 80~90%?
Or is there any formula with relationship…
Part Number: UC2845A Other Parts Discussed in Thread: UC2843A , UC1844A , UC3844A , UC1845A , UC3845A , UC3842A , UC2842A , UC1842A , UC2844A , UC3843A , UC1843A Hi, Team.
Could you tell me how much temperature how much temperature can UC2845A Junction be withstanded…