TPS65982ABZBHR datasheet(86/121 Pages) TI1

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TPS65982

SLVSD02D – MARCH 2015 – REVISED JUNE 2019

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Table 13. Dual-Port Notebook Application Design Parameters

DESIGN PARAMETERS

EXAMPLE VALUE

DIRECTION OF CURRENT

PP_5V0 Input Voltage and Current

Capabilities

5 V, 3 A

Sourcing to VBUS

PP_CABLE Input Voltage and Current

Capabilities

5 V, 500 mA

Sourcing to VCONN

PP_HV Input Voltage and Current

Capabilities

10-13 V, 3 A

Sourcing to VBUS (directly from Battery)

EXT FET Path Voltage and Current

Capabilities

20 V, 3 A

Sourcing to VBUS or Sinking from VBUS

VIN_3V3 Voltage and Current Requirements

2.85-3.45 V, 50 mA

Internal TPS65982 Circuitry

10.2.2.1.1

Source Power Delivery Profiles for Type-C Ports

Table 14 lists the summary of the source PD profiles that are supported for this specific design. PDO 1 and 2 will

always be present in the system and will be able to be negotiated without any other system interaction. When DC

barrel Jack voltage is sensed PDO 3 will become available for power delivery negotiation. The external sense

resistor, RSENSE, is configured to only measure the current being sourced by the system. When operating as a

sink of power the input current cannot be measured in this configuration.

Table 14. Source USB PD Profiles

PDO

POD TYPE

VOLTAGE

CURRENT OR POWER

EXTERNALLY

DEPENDENT

PDO1

Fixed Supply

5 V

3 A

PDO2

Battery Power

10 V - 13 V

30 W

PDO3

Fixed Supply

20 V

3 A

Yes

10.2.2.1.2

Sink Power Delivery Profile for Type-C Ports

The two Type-C ports used in this design support Power Delivery and enable charging over a Type-C

connection. Table 15 shows the sink profile supported by both of the ports. The reverse current blocking of the

device allows both of the Type-C ports to negotiate a power contract, but it is good system practice for the

System Controller to change the sink profile when a power contract is established. When the DC barrel jack is

connected the TPS65982 is renegotiate the a PD contract to no longer charge of Type C and have the DC Barrel

Jack take precedence when connected.

Table 15. Sink USB PD Profile

RDO

RDO TYPE

VOLTAGE

EXTERNALLY

DEPENDENT

Fixed Supply

20 V

3 A

Yes

10.2.2.2 Detailed Design Procedure

The same passive components used in the Fully-Featured USB Type-C and PD Charger Application are also

applicable in this design to support all of the features of the TPS65982. Additional design information is provided

below to explain the connections between the TPS65982 and the system controller and the TPS65982 and the

HD3SS460 SuperSpeed multiplexer.

10.2.2.2.1

TPS65982 and System Controller Interaction

The TPS65982 features two I2C slave ports that can be used simultaneously, where the system controller has

the ability to write to either of the I2C slave ports. Each I2C port has an I2C interrupt that will inform the system

controller that a change has happened in the system. This allows the system controller to dynamically budget

power and reconfigures a port’s capabilities dependent on current state of the system. For example, if a battery

power contract is established and the system is running low on battery power the system controller could notify

the TPS65982 to re-negotiate a power contract. The system controller is also used for updating the TPS65982

firmware over I2C, where the Operating System loads the Firmware update to the system controller and then the

system controller updates the firmware stored in the SPI Flash memory via I2C writes to the TPS65982.

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