Original Part Number: 1-1718643-1
LHE Part Number: 212000210156
Number of Positions: 2
Contact Tab Size Series: 1.2
Size (MM): L:15 W:26.5 H:14.8
Overview:
| LHE PN: | 212000210156 |
| Certification: | TUV, IATF16949, ISO14001, ISO9001, CQC, UL, ROHS |
| MOQ: | Most product not have MOQ, Small order can be accepted. |
| Sample service: | Free Samples |
| Delivery Time: | 3-5 Days |
| Quality Control | All goods will be 100% inspected before dispatched |
| Payment: | T/T, Western Union, MoneyGram, PayPal; 30% deposits; 70% balance before delivery. |
| Shipment: | DHL/FedEx/TNT/UPS/EMS/Aramex/SF for samples, By Air or by Sea for batch goods; Airport/ Port receiving. |
The Buck-Boost method realizes the transformation of generating negative voltage. When the main switch Q is turned on, due to the reverse direction of D, the current of Vin flowing through Q can only charge the inductor L. When Q is turned off, according to Lenz’s law, the direction of the current becomes In the description path of B in Figure 4, it can be seen from Figure 4(a) that the output of Vo is a negative voltage.
The method of using Buck-Boost negative voltage output. This method requires an additional operational amplifier A2, because the reference ground of the chip is finally connected to the reference ground of the input. Since the output is a negative voltage, the feedback signal needs to be reversed and then sent to FB. This method It will increase the extra cost, so it is not ideal to use the Buck-Boost circuit to achieve negative pressure.
