UPD360 datasheet(188/221 Pages) MICROCHIP

부품명	UPD360

상세설명	Highly Integrated Small Form Factor USB Type-C??Power Delivery 2.0 Port Controller

PDF	221 Pages

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제조업체	MICROCHIP [Microchip Technology]

홈페이지	http://www.microchip.com

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188 / 221 page

UPD360

DS00002084C-page 188

 2016-2017 Microchip Technology Inc.

In the final step, 50us after FET D is opened, FET A is shorted. The input to the core regulator now becomes 3V3_ALW.

13.1.5

3V3_ALW POWERED UP FOLLOWED BY VBUS COMING UP

In this case, 3V3_ALW is already powered up and VBUS starts to come up. 3V3_ALW will remain the power source for

the core and no changes will be made to the FET switches.

13.1.6

POWERED UP WITH VBUS AND 3V3_ALW, VBUS GOING AWAY

In this case, 3V3_ALW and VBUS are both present. The core is always powered from 3V3_ALW. If VBUS goes away,

nothing changes in the voltage to the core. An interrupt will be generated to the processor to let it know that VBUS status

changed.

FIGURE 13-11:

POWER SWITCH: VBUS FOLLOWED BY 3V3_ALW STEP FIVE

3V3_ALW

3V3_VBUS

VSW

3V3_VBUS_PWRGD=1

3V3_ALWAYS_PWRGD=1

SWITCH

CONTROL

VTR_PWRGD

VBUS_PWRGD

VCORE _PWRGD

3V3_ALW

LDOs

VCORE _PWRGD

1.8V Analog

1.8V Core

VMUX_PWRGD

UPD360 데이터시트(PDF) 188 Page - Microchip Technology