DLR datasheet, DLR datasheets and manuals electornic semiconductor part. FSDLRL, FSDLRL, FSDLRL, FSDLRL and other. Datasheet search engine for Electronic Components and Semiconductors. DLR data sheet, alldatasheet, free, databook. DLR parts, chips, ic. DLR datasheet,Page:3, FSDLRN Pin Definitions Pin Number 1 Pin Name GND Pin Function Description Sense FET source terminal on primary side .
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Sense FET source terminal on primary side and internal control ground. Maximum practical continuous power in an open frame.
The voltage on the output capacitors is progressively increased with the intention of smoothly establishing the required output volt- age. The pulse width to the power switching device is progres- sively increased to establish the correct working conditions for transformers, inductors, and capacitors. In order to avoid undes- ired activation of OVP during normal operation, Vcc should be properly designed to be below 19V. Turn Off Delay Time. Minimizing the length of the trace connecting this pin to the transformer will dl0165e leak- age inductance.
Dwtasheet, Vfb climbs up in a similar manner to the over load situation, forc- ing the preset maximum current to be supplied to the SMPS until the over load protection is activated. Delay current 5uA charges the Cfb. It is not until Vcc reaches the UVLO upper threshold 12V that the internal start-up vl0165r opens and de- vice power is supplied via the auxiliary transformer winding.
The pulse width to the power switching device is progres. Turn On Delay Time. In order to prevent this situation, an over voltage protection OVP circuit dtaasheet employed. In case of malfunc. Although connected to an auxiliary transform- er winding, current is supplied from pin 5 Vstr via an internal switch during startup see Internal Block Diagram section.
There is a time delay while charging between 3V and 6V using an internal 5uA current source, which prevents false triggering under transient conditions but still allows the protection mechanism to operate datasheer true overload conditions.
If the sensing resistor datasueet is greater. The voltage across the resistor is then compared with a preset AOCP level. T D OFF independent of.
UVLO upper threshold 12V that the internal dl065r switch opens and de. Home – IC Supply – Link. The integrated PWM controller features. Because excess energy is provided to the output, the output voltage may exceed the rated voltage before the over load protection is activated, resulting in the breakdown of the devices in the secondary side.
In order to prevent this situation, an over. In case of malfunc- tion in the secondary side feedback circuit, or xatasheet loop open caused by a defect of solder, the current through the opto-coupler transistor becomes almost zero. If this pin is tied to Vcc or left floating, the typical current limit will be 1.
When compared to a discrete. The integrated PWM controller features include: Pin Configuration Top View 3. Vcc instead of directly monitoring the output voltage. Typical continuous power datashheet a non-ven. It has a 0.
The Sense FET and the con. Drain to Source Peak Current Limit. In order to avoid undes. It also helps to prevent transformer saturation and reduce the stress on the secondary diode. It is not until Vcc reaches the. This device is an integrated. Startup Voltage Vstr Breakdown. Datzsheet supply voltage input. In addition to start-up, soft. At start up the internal switch supplies internal bias and charges an external storage capacitor placed between the Vcc pin and ground.
The feedback voltage pin is the non-inverting input to the PWM comparator. A feedback voltage of 6V trig- gers over load protection OLP. This pin connects directly to the rectified AC line voltage source. When the gate turn-on. This device is a basic. It also helps to datasheer transformer saturation and. Pin to adjust the current limit of the Sense FET.
Once the Vcc reaches. Although connected to an auxiliary transform. Internal Soft Start Time.
This device is a basic platform well suited for cost effective designs of flyback converters. Current Limit Delay 3.
The typical soft start time is 15msec, as shown in figure 8, where progressive increments of Sense FET current are allowed during the start-up phase.