Rohm USB PD Series Manual de usuario

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No. 64UG054E Rev.001

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User’s Guide

USB PD Controller Series

Stand-Alone PD Controller for Sink

BD93F10MWV EVK

BD93F10MWV-EVK-001 (Stand-Alone)

Introduction

This User's Guide describes the series of required procedures to operate and evaluate the EVK of the PD controller BD93F10MWV

for Sink. The documentation also contains the circuit components, operating procedures, and the Application Data.

Overview

BD93F10MWV-EVK-001 implements Stand-Alone PD Controller IC of BD93F10MWV in Sink mode. This EVK performs the Type-

C connection and make PD contracts with an attached Source device according to the configuration of the DIP switches on the

board. The EVK assumes Stand-Alone operation in the Dead Battery mode, so this EVK does not need an external power source

and works as a VBUS powered product. The board will supply power and voltage via VSNK terminal based on the negotiation

contracted with the source. Therefore, any existing board that is powered by an AC adapter or a regulated power supply up to

80W/20V can work and be evaluated with the EVK as a Type-C/PD power source.

EVK Operation Condition

Parameter

Min

Typ

Max

Units

Conditions

VBUS Power Supply

3.67

5.0

VSRC5V Power Supply

3.1

5.0

5.5

VSNK Output Voltage

4.75

5.0

Guaranteed by USB Standard and

connected Source.

VSNK Output Current Range

3.0/5.0

Depending on the Type-C cable. The

actual load current is depending on the

sink device operation that connects to

VSNK terminal.

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User’s Guide

BD93F10MWV-EVK-001 (Stand-Alone)

EVK Overview

Figure 1. BD93F10MWV-EVK-001(Top View)

Descriptions of EVK Functions

Figure 2. Descriptions of BD93F10MWV-EVK-001 Functions

This EVK has the functions that are defined in Table 1. Other than the functions listed, this EVK User Guide does not support it.

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User’s Guide

BD93F10MWV-EVK-001 (Stand-Alone)

Table 1. Descriptions of available functions

No.

Function

Silk Indication

Description

Default Setting

Type-C

Receptacle

CN_USB

Certified USB Type-C Receptacle TID: 5,200,000,020

Input System

Power/Ground

VSNK,

GND

The output for a system to an external device.

Enable OTP

JP_OTP

Enable/Disable configuration for (OTP) Over Temperature

Protection with PTC thermistor.

EN short: Enabled / EN Open: Disabled

Enabled

Select Auto Sink

Request

SW_VMAX,

SW_VMIN,

SW_PMIN

Automatically selects the range of Power and Voltage to

be contracted by USB PD.

VMAX = Set8,

VMIN = Set1,

PMIN = Set1,

(5V to 20V, 0.5W)

LED of VBRDY

LD_VBR

Indicates when the series of process including the Type-C

connection and USB PD contract is completed.

Note that the indication doesn’t mean that VBUS is

supplying VSNK. The LED also turns on when the 5V PD

contract is established due to the less power capability of

the source side.

LED of ORIENT

LD_ORI

Indicates the orientation (Normal or Flip) of the connected

Type-C.

ON: Connected by CC2

OFF: Connected by CC1 or disconnected.

LED of POWER

LD_POWER

Indicates the condition of the LSI.

ON: The power is supplied to the LSI.

OFF: No power supply.

Monitor USB PD

Communication

CC1, CC2,

Monitor terminals for Type-C voltage level and USB PD

Communication.

Monitor VBUS

condition

VBUS

Monitor terminal for VBUS voltage.

Monitor

Functions

VBRDY, ORIENT,

Monitor terminal for LSI features.

SRC Power of

VSRC5V

5V power supply from external power source.

Connect VSRC5V to a 5V supply that is normally derived

from the system battery.

USB 1.x / 2.0

communication

JP_USBD1,

JP_USBD2

Communication terminal for USB 1.x / 2.0 D+(P)/D-(N)

JP_USBD1: CC1 side

JP_USBD2: CC2 side

We cannot respond to inquiries other than the functions above.

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User’s Guide

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EVK schematic

Figure 3. BD93F10MWV-EVK-001 Schematic

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User’s Guide

BD93F10MWV-EVK-001 (Stand-Alone)

Operating Sequence

(The preparation for power up)

1. Confirm if both JP_VIOSEL and JP_STP are shorted by a jumper pin. The EVK cannot work correctly if there are no jumper

pins on these terminals. It is highly recommended to be checked. (These jumpers are present by default.)

2. Short EN and ADCIN on JP_TOP if the Over Temperature Protection with the external PTC thermistor is in use. If not in use,

short ADCIN and SGND.

3. Set SW_VMAX, SW_VMIN and SW_PMIN according to required PD contract. Please refer to Figure 9 for further information.

4. When connecting the existing system board for evaluation, connect the EVK into the existing system board before power

up as shown in Figure 6.

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User’s Guide

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(Check operation)

1. Prepare any source device, e.g., Type-C/PD adapter, then connect to the Type-C receptacle on the EVK via a cable. Please

insert a USB Type-C / PD protocol analyzer between the Source device and EVK if it is required to monitor the transaction

on CC signals as shown in Figure 8.

2. When LD_VBRDY lights up, it shows that the connection with a Source device is completed. LD_ORI shows the orientation

of the inserted plug.

3. Confirm the contracted voltage from VSNK using a digital multimeter shown in Figure 4.

If there is no monitored VSNK voltage, below are the possible reasons:

⚫Type-C devices cannot be identified by the port as Sink or Source device. It is possible that the connected device is a

Sink device.

⚫The connected Source device cannot meet the required power or voltage configured by PMIN or VMIN.

⚫There may be a latched-off state that is caused by the overvoltage on the Source or the EVK side due to the inrush

current by the load connected on VSNK. The EVK has no countermeasures for inrush current so it is required for a

system to prevent it.

Please check both Figure 15. and Figure 16. to confirm the correct behavior of the Type-C/PD connection.

(Connection examples and details)

Digital

Multimeter

BD93F10MWV-EVK-001

Type-C Cable

Type-C Wall

Charger

Figure 4. An evaluation for only EVK with Type-C cable

Digital

Multimeter

BD93F10MWV-EVK-001

Type-A to C

Cable

Type-A Wall

Charger Type-A to C cable constrains

the current capability to USB

default. Therefore, a PD

contract cannot accomplish,

and the device connects by

Type-C.

Type-A to C Cable has

built-in Rp (56kΩ) in its

plug side.

Figure 5. An example of the connection with Type-A to C Cable

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User’s Guide

BD93F10MWV-EVK-001 (Stand-Alone)

BD93F10MWV-EVK-001

Type-C Cable

Type-C Port

Laptop PC

Existing system board

Up to 20V@5A

Current

Probe

USB-B

port

USB communication is

available with both

JP_USB1 and JP_USB2

if an existing system

board has USB Type-B.

The observed current depends on the existing system board connected to

a VSNK terminal on the EVK. The contracted current is the maximum

current capability of a source and it doesn't means the consuming current

by a sink (It is equal to both the EVK and a load).

A 5A cable is required if

an existing system board

consumes over 3A.

Figure 6. An example of the connection of the EVK supplying power to an existing system board

JP_USBD2

JP_USBD1

P N P N

VS NK

VB RD Y

PCB0207 Rev. A

G ND SoC

USB

Peripheral

GND

VBUS

GPIOs

D-

D+

GPIOn

An example of the

existing system board

Primary Power Rail

USB-B

Port

VBRDY can use for the start

timing of USB communication.

Short the terminals P each other and the terminal N each

other to support flipped case on the Type-C connection.

5V POL

Connects the VBUS on the

USB-B port from a 5V POL

Figure 7. An example of USB connection on an existing system board

BD93F10MWV-EVK-001

Type-C Cable

Type-C Wall

Charger

Anonymous

USB

Pow er Deli very

Analyzer

USB PD Protocol

Analyzer

Figure 8. An example of the connection with a protocol analyzer for PD communication

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BD93F10MWV-EVK-001 (Stand-Alone)

(Change configuration of the PD contracts)

Note: The configurations of SW_VMAX, SW_VMIN, and SW_PMIN are stored upon power-up. Dynamically changing the DIP

switches will not change the configuration during operation. Please do the following procedures to set the new configuration,

settings will be reflected after a power cycle of the EVK.

1. Turn off VSRC5V if powered up.

2. Unplug the Type-C cable from the Type-C receptacle and disconnect it from the Source device.

3. Change SW_VMAX, SW_VMIN, and SW_PMIN according to the requirement.

4. Power VSRC5V if necessary. The new configuration is stored at power up

5. Reconnect the Source device to the Type-C receptacle of the EVK via Type-C cable.

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User’s Guide

BD93F10MWV-EVK-001 (Stand-Alone)

Configuring the USB PD contract range

This EVK can set the range of USB PD contract automatically according to SW_VMAX, SW_VMIN, SW_PMIN DIP switch settings.

The EVK can make a contract with a PD source that has a range within the “USB PD Contractable Range” shown in Figure 9.

The EVK requires a power cycle to update the range assigned by SW_VMAX, SW_VMIN, and SW_PMIN. A power cycle occurs

by both disconnecting from a Source device and losing power from VSRC5V. If there is no VSRC5V, only disconnecting from a

Source device is required

A USB PD contract is determined by USB PD communication on either CC1 or CC2 between a Source and Sink device after the

Type-C connection. Please refer to Figure 16. regarding USB PD communication waveform.

Note: Each DIP switch must only have one pin at ON. Multiple positions are not allowed, as it does not guarantee the

expected operation.

Table 2. The table for the range of PD contract by SW_VMAX / SW_VMIN / SW_PMIN

Set

SW_VMAX[V]

SW_VMIN[V]

SW_PMIN[W]

0.5

7.5

15*

20*

*Required voltage depending on the power specified for the Source device specified in the PDP Rating in the USB PD standard. Others are

optional.

Table 3. The detailed information for three DIP switches

Figure 9 shows the specific range by SW_VMAX, SW_VMIN, and SW_PMIN that allows USB PD Contract.

Terminal

SW_VMAX

SW_VMIN

SW_PMIN

Description

·The upper limit voltage for the

USB PD contract. The device

does not make a contract that

exceeds this value.

·The value should not be less

than SW_VMIN. It will operate

as [email protected] if SW_VMAX is

less than SW_VMIN.

·The lower limit voltage for the

USB PD contract. The device

does not make a contact that

falls under this value.

·Set SW_VMAX equal to

SW_VMIN if a specific fixed

voltage is required.

·The value should not be more

than SW_VMAX. It will operate

as 5V@0.1A if SW_VMIN is

more than SW_VMAX.

·The lower limit power for the

USB PD contract and it shall

meet the minimum power that

can operate the sink device.

The product cannot make a

contract with the Source device

if the power capability is not

enough.

·The maximum current for the

sink on the contracted current is

up to the maximum current

capability of a source.

·If a setting where SW_PMIN /

min(SW_VMAX or SW_VMIN),

exceeds 5A, then it will operate

as [email protected].

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User’s Guide

BD93F10MWV-EVK-001 (Stand-Alone)

SW_VMIN SW_VMAX

SW_PMIN

The contractable

range by USB PD

(Connected Power)

Turns on the Nch-MOS

FETs (Q20, Q21) on the

VBUS Power line.

The configurable

range of USB PD

contract by VMIN,

VMAX, and PMIN

Voltage[V]

Current[A]

Figure 9. USB PD Contractable Range

Figure 10 shows the contracted power data objects (PDO) with a 45W source supporting 5V, 9V, and 15V when DIP switches are

set to SW_VMAX = 15V (Set to 4), SW_VMIN = 9V (Set to 3), and SW_PMIN = 15W (Set to 3).

󳕊

󳕊󳆩Contracted PDO

A contractable

range by a

Source

SW_VMIN

=2 SW_VMAX

SW_PMIN

The actual

contractable

range by USB PD

Voltage[V]

Current[A]

Figure 10. The contractable range with a source under the example

According to the ★ sign, the contracted PDO is specified to the maximum power within the USB PD contractable range. USB

PD standard mandates the specific voltages according to the power of the contracted Source. 5V, 9V, 15V, and 20V are mandatory

and other voltages are optional.

For example, if the EVK SW_VMAX is set to 12V and connected to the Source device specified in Figure 9, where the Source

device does not have 12V as an option, then the contract with the EVK will be a PDO of 9V@3A.

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