Microchip Technology EVB-UPD301A SRC, Руководство пользователя

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EVB-UPD301A (SRC) Evaluation Kit User’s Guide
DS50002811B-page 14
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2018-2019 Microchip Technology Inc.
3.1.2 Power Source - Self Powered
The EVB-UPD301A only supports self-powered operation. Power is supplied through
one +24.0V regulated external power supply. The power supply is connected to the
screw terminal “HV_INPUT” (J5). The +24.0V feeds two 5A PM-PD modules that out-
put +5V, +9V,+15V, or +20V (nominal) to the Type-C VBUS and also supplies the
on-board +3.3 regulator.
3.1.3 Downstream Port Power Control
USB power to the two downstream ports is controlled via port power controllers with
auto-discharge functionality. All downstream ports support Type-C battery charging.
The two downstream Type-C ports are each capable of up to 3A of current at 20V.
3.1.4 USB Type-C Ports
The UPD301A has two USB3.2 Type-C pass-through ports. The UPD301A also fea-
tures integrated Type-C control signal (CC) detection to determine when and in what
orientation a USB Type-C attach has been made. It powers the VBUS needed for both
USB communication and PD communication.
TABLE 3-1: CONFIGURATION OPTIONS FOR PORTS 1 AND 2
J11/J12 Shunt
Position
(J11/J12 is shunted pins 11-12) PDP
1-2 200K Pull-Up Configuration 2 15W
3-4 4.7K Pull-Up Configuration 4 45W
5-6 10R Pull-Up Configuration 6 (NOT SUPPORTED) NA
7-8 200K Pull-Down Configuration 1 7.5W
9-10 4.7K Pull-Down Configuration 3 27W
11-12 10R Pull-Down Configuration 5 (DEFAULT) 60W
CAUTION
SW1 must be used to enable the 24.0V external power supply; otherwise, damage may
occur to the power circuit. It is recommended to use a high power bench supply. Failure
to heed to this warning could result in damage to the 24.0V power circuit.