With the current boom in wireless chargers, the wireless charging market has entered the blowout. The conventional wireless charging coil drive requires two MOS drivers and four MOS devices to do the work, which occupies a large area. ETA7522 Integrated Dual Half-Bridge Driver and Four MOS Drivers.
钰 Thai ETA7522 uses high precision reference and current sampling circuit, and also has overheat protection and short circuit protection.
Symmetrical design, two identical H-bridge drivers plus two MOS, each with individually controllable enable, bootstrap and driver, and independent overcurrent protection short-circuit protection.
The input voltage range is 4.2-16V, and the maximum withstand voltage is 30V, which effectively prevents the device from failure due to overvoltage stress. The output current is > 3A, which meets the daily product requirements.
钰 Thai ETA7522 Product Introduction
The above is the application diagram of the wireless ETA7522 wireless charging application. It only needs to input the driving signal. The signal level is seamlessly connected with the digital circuit, eliminating the matching of the driver and the MOS, truly achieving a top six.
At the same time thanks to the good match of its driver and built-in MOS, Hao Tai ETA7522 does not require software dead zone adjustment. A chip to solve the problem of complete wireless charging drive.
Seeing here, everyone will be curious. How much money would it cost to have such a good material? Can my product be affordable?
钰 Thai ETA7522 only 1 yuan, you can replace the two MOS drive and four MOS and corresponding external components.
钰 Thai ETA7522 uses DFN3*3 package, which is equivalent to the size of only one MOS tube, greatly reducing the board area and saving space. It is convenient to do multi-coil program.
The figure above shows the wireless charging without ETA7522. The driver and MOS transistor are already small in size of DFN3*3. Compared with the traditional SO8 package IC, the wireless charger has already saved the area. However, with the ETA7522, only one equivalent size is needed. The chip can complete all functions of the six-chip and peripheral components in the figure above.
钰泰ETA7522 is suitable for wireless charging transmitters, single inductor synchronous buck-boost and motor drive.
