Part Number: UC3856 Other Parts Discussed in Thread: LM5036 , LM5039 Tool/software: Hi，
I use UC3856 as the H-bridge controller, with A out (pin 11) and B out (pin 14) of UC3856 as the 1, 4, and 2,3 drivers of the H-bridge, respectively. Pin 6 and…
Part Number: UC3856 Other Parts Discussed in Thread: UC3846 We are using UC3856 current mode control IC in ac to dc converter.
a) This IC is not able to drive the MOSFET, it can able source 120mA only, whereas datasheet indicates peak 1.5amp. With external…
Part Number: UC3856 Other Parts Discussed in Thread: UC3846
Hello, first of all I'm sorry that I don't speak enough English.
I am driving 2 mosfets with UC3856. I designed a buck converter with 2 mosfets connected to each other.
I get 20kHz output…
Hi Pawel,
Since there has been no activity on this post for two weeks I am closing the post.
Please open a new post if you have more questions.
Regards
Peter
Other Parts Discussed in Thread: UC3856 HI,
I am working on a push pull converter wich should operate from a 48V dc bus.
I intend to use UC3856 currentmode pwm or similar.
There is an absolute need for external syncronisation, which can be…
Part Number: UC2856-Q1 Other Parts Discussed in Thread: UC3856 , UC2856 I would like to be able to disable the PWM comparator without discharging the soft start capacitor. I would like to implement this by pulling the COMP pin low in the same manner as…
Hello Yaita-san,
When we measure startup current, we supply VIN and VC less than UVLO, connect resistor/capacitor to timing pins, connect other inputs to GND, and float other outputs. In this condition, we measure VIN current. This is how I measured…
Hi ee tech,
1. Dead time information in Table 1 ( pg 15) td = 75.8ns is not accurate. Datasheet should be revised to update some inaccuracies.
2. As the part is 30+ years old, thus more information can be found in various application notes done by…
