Rohm BD93E11GWL-EVK-001 User manual

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© 2021 ROHM Co., Ltd.
No. 64UG056E Rev.001
2021.10
User’s Guide
USB PD Controller Series
Stand-Alone PD Controller for Sink
BD93E11GWL EVK
BD93E11GWL-EVK-001 (Stand-Alone)
Introduction
The User’s Guide describes the series of required procedures to operate and evaluate the EVK of the PD controller BD93E11GWL
for Sink. The document also contains the circuit components, the operating procedures, and the Application Data.
Overview
BD93E11GWL-EVK-001 implements Stand-Alone PD Controller IC of BD93E11GWL in Sink mode. This EVK performs the Type-
C connection and make PD contracts with the 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
22
V
VSRC5V Power Supply
3.1
5.0
5.5
V
VSNK Output Voltage
4.75
5.0
22
V
Guaranteed by USB Standard and
connected Source.
VSNK Output Current Range
3.0/5.0
A
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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© 2021 ROHM Co., Ltd.
No. 64UG056E Rev.001
2021.10
User’s Guide
BD93E11GWL-EVK-001 (Stand-Alone)
EVK Overview
Figure 1. BD93E11GWL-EVK-001(Top View)
Descriptions of EVK function
Figure 2. The descriptions of the part of BD93E11GWL-EVK-001
This EVK has the functions that are defined in Table 1. Other than the functions listed, this EVK User Guide does not support it.
1
2
4
6
7
8
9
10
11
13
14

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© 2021 ROHM Co., Ltd.
No. 64UG056E Rev.001
2021.10
User’s Guide
BD93E11GWL-EVK-001 (Stand-Alone)
Table 1. The descriptions of the available functions
No.
Function
Silk Indication
Description
Default Setting
1
Type-C
Receptacle
CN_USB
Certified USB Type-C Receptacle TID: 5,200,000,020
-
2
Input System
Power/Ground
VSNK,
GND
The output for a system / an existing external board.
-
4
Enable OTP
JP_OTP
Enable/Disable configuration for (OTP) Over Temperature
Protection with the PTC thermistor.
EN short: Enabled / EN Open: Disabled
Enabled
6
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)
7
LED of Sink
Ready
LD_SNKR
Indicates when a 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.
-
8
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.
-
9
LED of POWER
LD_POWER
Indicates the condition of the LSI.
ON: The power is supplied to the LSI.
OFF: No power supply.
-
10
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.
-
11
Monitor
Functions
SNKRDY,
ORIENT,
Monitor terminal for LSI features.
-
13
SRC Power of 5V
VSRC5V
5V power supply from external power source.
Connect VSRC5V to a 5V supply that is normally derived
from the system battery.
-
14
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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© 2021 ROHM Co., Ltd.
No. 64UG056E Rev.001
2021.10
User’s Guide
BD93E11GWL-EVK-001 (Stand-Alone)
EVK schematic
Figure 3. BD93E11GWL-EVK-001 Schematic

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© 2021 ROHM Co., Ltd.
No. 64UG056E Rev.001
2021.10
User’s Guide
BD93E11GWL-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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© 2021 ROHM Co., Ltd.
No. 64UG056E Rev.001
2021.10
User’s Guide
BD93E11GWL-EVK-001 (Stand-Alone)
(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 as 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 16 and Figure 17 to conform the correct behavior of the Type-C/PD connection.
(Connection examples and details)
Digital
Multimeter
Type-C Cable
Type-C Wall
Charger
BD93E11GWL-EVK-001
Figure 4. An evaluation for only EVK with Type-C cable
BD93E11GWL-EVK-001
Digital
Multimeter
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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© 2021 ROHM Co., Ltd.
No. 64UG056E Rev.001
2021.10
User’s Guide
BD93E11GWL-EVK-001 (Stand-Alone)
BD93E11GWL-EVK-001
Type-C Cable
Type-C Port
Laptop PC
Existing system board
Up to 20V@5A
Current
Probe
USB-B
port
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.
USB communication is
available with both
JP_USB1 and JP_USB2
if an existing system
board has USB Type-B.
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
PCB0214 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
Short the terminals P each other and the terminal N each
other to support flipped case on the Type-C connection.
VBRDY can use for the start
timing of USB communication.
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
Type-C Cable
Type-C Wall
Charger
Anonymous
USB
Pow er Deli very
Analyzer
USB PD Protocol
Analyzer
BD93E11GWL-EVK-001
Figure 8. An example of the connection with a protocol analyzer for PD communication

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© 2021 ROHM Co., Ltd.
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2021.10
User’s Guide
BD93E11GWL-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 up 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 the Type-C cable.

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© 2021 ROHM Co., Ltd.
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User’s Guide
BD93E11GWL-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 a Sink device after
the Type-C connection. Please refer to Figure 17 regarding USB PD communication waveform.
Note: Each DIP switch must only have one position 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]
1
5*
5*
0.5
2
9*
9*
7.5
3
12
12
15
4
15*
15*
27
5
16
16
36
6
18
18
45
7
19
19
60
8
20*
20*
80
* 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 [email protected] 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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© 2021 ROHM Co., Ltd.
No. 64UG056E Rev.001
2021.10
User’s Guide
BD93E11GWL-EVK-001 (Stand-Alone)
9
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).
9
󳕊
󳕊󳆩Contracted PDO
A contractable
range by a
Source
SW_VMIN
=2 SW_VMAX
=4
SW_PMIN
=3
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 voltage are optional.
For example, if the EVK that SW_VMAX is set to 12V and connected to the Source device specified in Figure 10 where the Source
device does not have 12V as an option, then the contract with the EVK will be PDO of 9V@3A.