| Part Numbert | Mfg | Packt | D/C | Descriptiont | Qty | Company/Contact |
SKKT15-16 Datasheet
SKKT15-16 Price
SKKT15-16 on stock To drive the upper DMOS a voltage higher than the power supply Vp is needed. The step-up inte- grated in the L6237 keeps the CBOOST storage capacitor at the correct voltage. The switching of the internal step-up circuit can create some noise that could disturb the current control loop. In order to minimize the interference between the step-up circuit and the linear control loop of the output current is suggested to choose an LBOOST of 220cCH with an equivalent series resistor minimum of 2 1 . Anotherway to decoupling the noise effects of the step-up from the linear control loop is taking care in the PC BOARD design about the GROUND path. The charging current of the inductor, for the inter- nal step-up converter, flowing through the pin LBOOST (43) is coming out from the device at GND pin 42. A good solution is to keep separate in the PC BOARD the GND track connection of this pin (42) from the other GND pins (6,7,8,40,41). Pin 37 0f the device is the input of the internal sense amplrfier (see Fig. 4). The voltage at this pin provides the feedback sig- nal which is intemally used to regulate the mo- torurrent. In order to have no differences in regulated cur- The SPX2954 may be pin-strapped for SV using its internal voltage divider by tying Pin l (out- put) to Pin 2 (sense) and Pin 7 (feedback) to Pin 6 (5V Tap). Also,it may be programmed for any output voltage between its l.235V reference and its 30V maximum rating using an external pair ofresistors. Refer to the below equation for the programming of the output voltage: |
