10.2.1.3 Application Curve
DC Current (A)
PP_EXT Power Loss (mW)
3 3.2 3.4 3.6 3.8 4 4.2 4.4 4.6 4.8 5
0
100
200
300
400
500
600
700
800
900
1000
D012
Figure 10-2. PP_EXT Power Loss (R
NFETS
+ R
SENSE
= 30 mΩ)
10.2.2 Dual-Port Notebook Application Supporting USB PD Charging and DisplayPort
The TPS65982 features support for DisplayPort over Type-C alternate mode and manages sinking and sourcing
of power in Power Delivery. The block diagram, shown in Figure 10-3, shows a two port system that is capable
of charging from either Type C port over PD, DisplayPort Alternate Mode, and delivering Battery Power to a
bus-powered device. With the DisplayPort support, the TPS65982 controls an external SuperSpeed multiplexer,
HD3SS460, to route the appropriate super-speed signals to the Type-C connector. The HD3SS460 is controlled
through GPIOs configured by the TPS65982 application code and the HD3SS460 is designed to meet the timing
requirements defined by the DisplayPort over Type-C specification. A system controller is also necessary to
handle some of the dynamic aspects of Power Delivery such as reducing power capabilities when system battery
power is low. Audio accessory device is supported by the design as well. Although USB_RP_P and USB_RP_N
are not shown in the block diagram, they must be connected to the system-side IC that will receive and send
USB2.0 high-speed data through the integrated multiplexer of the TPS65982.
TPS65982
SLVSD02E – MARCH 2015 – REVISED AUGUST 2021
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Product Folder Links: TPS65982
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