High-side power switches cover USB power delivery and fast role swap
The highly integrated high-side switches provide extensive port protection with auto-recovery, including over-voltage, over-current, short-circuit, and over-temperature. In addition they feature controlled rise-time and under-voltage lock-out, as well as a discharge function for external storage capacitors.
Based on an N-channel MOSFET and Diodes Incorporated’s patented copper-pillar packaging technology to achieve an exceptionally low on-resistance, the power switches feature a wide input voltage range of 3.0V to 5.0V and an adjustable limited load current of up to 4.0A (AP22615 only). With a low RDS(ON) of just 40mΩ and high ESD protection (2kV human body model, 200V machine model), the AP22815/615 are integrated load switches well-suited for a range of applications, including notebooks, netbooks, tablets, set-top boxes, USB chargers, and other consumer electronics. As well as having integrated load-current limiting, which is adjustable in the AP22615, the high-side power switches are fully compliant with the USB power delivery and fast-role swap specifications. This ensures that the internal power transistor will detect and react to the presence or absence of a power rail within 150µs, thereby supporting the hot-swapping of USB power sinks and sources without resulting in any disruption to the consumer experience.
Both devices feature an enable (which can be specified to be active-high or active-low) and a dedicated flag output that signals a fault condition. To accommodate devices with high load capacitance, a 7ms deglitch period is built in to the devices, to avoid false triggers. The AP22815 with fixed current limiting is available in the TSOT25 package while the AP22615 with adjustable current limiting comes in the TSOT26 package.
Diodes – www.diodes.com