Throughout time different methods of measurement of the electrical current sensing technologies have been developed. Current shunts A shunt appears as a simple solution however it has high power dissipation, it is non-isolated, and frequency bandwidth is limited due to relatively high self-inductance...
1. 20 years experience in transformer and inductor manufacturing;2. Scientific management system, strong technical team, and strict quality control system;3. RoHS,CE,TUV and UL certified;4. OEM & ODM;5. Competitive price,in time delivery and perfect after-serv...
Typically in ZCS converters a resonant inductor which is placed in series with the semiconductor switch, is used to resonant the current through the switch to zero at turn-off and limit di/dt for turn-on. Typically in ZVS converters a resonance capacitor which is placed in parallel with the...
1. 20 years experience in transformer and inductor manufacturing;2. Scientific management system, strong technical team, and strict quality control system;3. RoHS,CE,TUV and UL certified;4. OEM & ODM;5. Competitive price,in time delivery and perfect after-se...
Thence, in a difference detecting circuit 13, the difference in each digital quantity between the current time and before prescribed time is detected, and is next D/A converted 14, after which it is removed of a higher harmonic component in an LPF15, and is converted to AC. This AC is ...
response time of the supervisor. The data sheet suggests a time constant that is a tenth of the switching frequency yet not so long that the delay through the filter is much longer than the supervisor response time. For quiet supplies that need a fast OC response, one may choose...
For higher resolution when measuring low currents, multiple turns of the wire can be made through the aperture of the current sensing attachment. The final sensitivity will be the set sensitivity times the number of turns. Tapping the "Mode Select" button will cycle through the bandwidth and gai...
Even these earlier mentioned restrictions, due to the blanking time and the resultant duty cycle limitations, can be circumvented through the IC design. For example, one remedy is to incorporate low-side current sensing where the inductor current is measured during the off-time rather than ...
.Continuous inductor current mode. in which the total ampere-turns do not dwell at zero (although the current may pass through zero). In the continuous current mode, the ripple current is often small enough that ac winding loss and ac core loss may not be significant, but in the ...
Since we have synchronous rectifiers the minimum current through the current sense resistor on the primary will be half the ripple current on the output inductor translated to the current sense resistor. The voltage on Vfb will be less than the Vref under all normal operational conditions. Once ...