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 .
|Published (Last):||26 February 2005|
|PDF File Size:||17.10 Mb|
|ePub File Size:||19.91 Mb|
|Price:||Free* [*Free Regsitration Required]|
DLR (SEMICOA) PDF技术资料下载 DLR 供应信息 IC Datasheet 数据表 (12/20 页)
The feedback voltage pin is the non-inverting input to the PWM comparator. UVLO upper threshold 12V that the internal start-up switch opens and de.
The integrated PWM controller features. Minimizing the dl00165r of the trace connecting this pin to the transformer will decrease leak- age inductance. 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 under true overload dl0156r.
The voltage across the resistor is then compared with a. 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. Here, pulse by pulse. This pin connects directly to the rectified AC line voltage source.
Internal Soft Start Time. Pin to adjust the current limit of the Sense FET. In order to prevent this situation, an over voltage protection OVP circuit is employed. If this pin is tied to Vcc or left floating, the typical current limit will be 1. Drain to Source Peak Current Limit.
When the gate turn-on. The typical soft start time is. Turn On Delay Time. Once the Vcc reaches. The Drain pin is designed to connect directly to the primary lead of the trans. In case of malfunc. It has a 0. Turn Off Delay Time.
The pulse width to the power switching device is progres- sively increased dagasheet establish the correct working conditions for transformers, inductors, and capacitors. It is not until Vcc reaches the UVLO upper threshold 12V that the internal start-up switch opens and de- vice power is supplied via the auxiliary transformer winding.
DL0165R Ver la hoja de datos (PDF) – Fairchild Semiconductor
Adapt- Open Adapt- Open. The voltage across the resistor is then compared with a preset AOCP level. This device is a basic platform well suited for cost effective designs of flyback converters.
Then, 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. Once the Vcc reaches 12V, the internal switch is disabled. Vcc instead of directly monitoring the output voltage. This device is an integrated high voltage power switching regulator which combine an avalanche rugged Sense FET with a current mode PWM control block. At start up the internal switch supplies internal bias and charges an external storage capacitor placed between the Vcc pin and ground.
Positive supply voltage input. Startup Voltage Vstr Breakdown. This device is a basic. Pin Configuration Top View 3. When compared to a discrete.
In addition to start-up, soft- start is also activated at each restart attempt during auto- restart and when restarting after latch mode is activated. 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.
In order to avoid undes- ired activation of OVP during normal operation, Vcc should be properly designed to be below 19V. In order to prevent this situation, an over. The integrated PWM controller features include: Over load protection 4. Delay current 5uA charges the Cfb. In order to avoid undes. Current Limit Delay 3. 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.
T D OFF independent of. In case of malfunc- tion in the secondary side feedback circuit, or feedback loop open caused by a defect of solder, the current through the opto-coupler dl0165 becomes almost zero. Maximum practical continuous power in an open frame. In addition to start-up, soft.