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CY4533
EZ-PD™ Barrel Connector Replacement
(BCR) Evaluation Kit Guide
Document Number. 002-25263 Rev. *B
Cypress Semiconductor
198 Champion Court
San Jose, CA 95134
www.cypress.com
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CY4533 EZ-PD™ BCR Evaluation Kit Guide, Document Number: 002-25263 Rev. *B 2
Copyrights
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and its subsidiaries (“Cypress”). This document, including any software or firmware included or referenced in this document
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reproduce the Software solely for use with Cypress hardware products, only internally within your organization, and (b) to
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Cypress, the Cypress logo, Spansion, the Spansion logo, and combinations thereof, WICED, PSoC, CapSense, EZ-USB, FRAM, and Traveo are trademarks or registered trademarks of Cypress in the United States and other countries. For a more
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respective owners.
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CY4533 EZ-PD™ BCR Evaluation Kit Guide, Document Number: 002-25263 Rev. *B 3
Contents
Safety Information .................................................................................................................................................................. 4
1. Introduction .................................................................................................................................................................... 5
1.1 Kit Contents ........................................................................................................................................................... 5
1.1.1 Hardware Not Included with the Kit........................................................................................................... 5
1.2 Getting Started ...................................................................................................................................................... 5
1.3 Acronyms .............................................................................................................................................................. 6
2. Hardware ........................................................................................................................................................................ 7
2.1 Board Details ......................................................................................................................................................... 7
2.2 BCR System Overview .......................................................................................................................................... 8
2.3 Block Diagram and Functional Description ............................................................................................................ 9
2.3.1 EZ-PD BCR Controller Features ............................................................................................................. 10
2.3.2 DC Power Transfer System .................................................................................................................... 10
2.3.3 VBUS Voltage and Current Selectors ..................................................................................................... 11
2.3.4 FAULT LED and Safe 5V Load Switch ................................................................................................... 12
2.3.5 8-Pin I/O Header ..................................................................................................................................... 13
2.4 Changing VBUS Voltage and Current Requested from Power Adapter .............................................................. 13
3. Kit Operation ................................................................................................................................................................ 15
3.1 External Hardware Required for Demo ................................................................................................................ 15
3.2 Running the Demos ............................................................................................................................................. 15
3.2.1 Demo #1: Convert an Electronic Device to Power it from USB Type-C .................................................. 15
3.2.2 Demo #2: Test with a Multimeter and EZ-PD Protocol Analyzer ............................................................ 17
3.3 Behavior under Mismatching Capabilities ............................................................................................................ 18
A. Terminology ................................................................................................................................................................. 19
Revision History ................................................................................................................................................................... 20
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CY4533 EZ-PD™ BCR Evaluation Kit Guide, Document Number: 002-25263 Rev. *B 4
Safety Information
The CY4533 EZ-PD™ Barrel Connector Replacement (BCR) Evaluation Kit (EVK) is intended for use as an evaluation
platform for hardware or software in a laboratory environment. The board is an open-system design, which does not include
a shielded enclosure. Due to this reason, the board may cause interference to other electrical or electronic devices in close
proximity. In such cases, take adequate preventive measures. Also, do not use this board near any medical equipment or RF
devices.
Attaching additional wiring to this product or modifying the product operation from the factory default may affect its
performance and cause interference with other apparatus in the immediate vicinity. If such interference is detected, suitable
mitigating measures must be taken.
The CY4533 EZ-PD BCR EVK board contains ESD-sensitive devices. Electrostatic charges readily
accumulate on the human body and any equipment, which can cause a discharge without detection.
Permanent damage may occur to devices subjected to high-energy discharges. Proper ESD
precautions are recommended to avoid performance degradation or loss of functionality. Store
unused CY4533 EZ-PD BCR EVK boards in the protective shipping package.
End-of-Life/Product Recycling
The end-of-life cycle for this kit is five years from the date of manufacture mentioned on the back of
the box. Contact the nearest recycler to discard the kit.
General Safety Instructions
ESD Protection
ESD can damage boards and associated components. Cypress recommends that the user perform procedures only at an
ESD workstation. If an ESD workstation is not available, use appropriate ESD protection by wearing an antistatic wrist strap
attached to the chassis ground (any unpainted metal surface) on the board when handling parts.
Handling Boards
The board provided with CY4533 EZ-PD BCR EVK is sensitive to ESD. Hold the board only by the edges. After removing the
board from the box/casing, place it on a grounded, static-free surface. Use a conductive foam pad, if available. Do not slide
the board over any surface.
Do’s and Don’ts
Maximum current that can be consumed by an external load connected to the EVK board cannot
exceed 5A.
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CY4533 EZ-PD™ BCR Evaluation Kit Guide, Document Number: 002-25263 Rev. *B 5
1. Introduction
The CY4533 EZ-PD™ Barrel Connector Replacement (BCR) Evaluation Kit (EVK) is based on the BCR product in Cypress’
USB Type-C and Power Delivery controllers. This EVK is intended to be an evaluation vehicle for applications that would
want to consume power over a USB Type-C Connector.
A device, such as a speaker, shaver, power tools, modem etc. that use a barrel connector for power will benefit from using a
universal power interface such as USB Type-C. To make the transition easier, the CY4533 EVK provides a USB Type-C
receptacle to consume power from a charger and then supply it over a terminal block. A barrel connector can be attached to
this block using wires to convert a barrel input to USB Type-C.
1.1 Kit Contents
The CY4533 EZ-PD BCR EVK consists of the following:
CY4533 EZ-PD BCR EVK Board
Quick Start Guide
1.1.1 Hardware Not Included with the Kit
The CY4533 EZ-PD BCR EVK does not come with all the hardware required to perform the demonstrations mentioned in Kit
Operation. The following items are not included:
A USB Type-C Power Adapter that can supply power over the Type-C port
A two-wire cable with a barrel plug to supply power to an existing device
A device that accepts power from a barrel input
USB-C cable required (if not already provided with the USB-C Power Adapter) for connecting the USB Type-C power
adapter to the Type-C receptacle on the EVK
Multimeter and other measurement equipment
A 3 mm flat head screw driver (for turning the SW1 rotary switch knob)
A wire stripper
CY4500 EZ-PD Protocol Analyzer
1.2 Getting Started
For instructions on how to run a quick demonstration and observe the kit functionality, see the Kit Operation section.
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CY4533 EZ-PD™ BCR Evaluation Kit Guide, Document Number: 002-25263 Rev. *B 6
1.3 Acronyms
Table 1-1. Acronyms Used in this Document
Acronym
Definition
AFC
Adaptive Fast Charging
BCR
Barrel Connector Replacement
CC
Configuration Channel
CCG
Cable Controller Generation
DFP
Downstream Facing Port
DNP
Do Not Populate
EC
Embedded Controller
EMCA
Electronically Marked Cable Assembly
ESD
Electrostatic Discharge
EVK
Evaluation Kit
FET
Field-Effect Transistor
GPIO
General-Purpose Input/ Output
IC
Integrated Circuit
I2C
Inter-Integrated Circuit
LED
Light-Emitting Diode
NA
Not Applicable
OVP
Over Voltage Protection
PA
Power Adapter
PD
Power Delivery
PDO
Power Data Object
PFET
P-channel Field Effect Transistor
PSoC®
Programmable System-on-Chip
QC®
Qualcomm Quick Charge
SoC
System-on-Chip
USB
Universal Serial Bus
USB-PD
Universal Serial Bus Power Delivery
UVP
Under Voltage Protection
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CY4533 EZ-PD™ BCR Evaluation Kit Guide, Document Number: 002-25263 Rev. *B 7
2. Hardware
2.1 Board Details
Figure 2-1. CY4533 EVK Top and Bottom Details
+
–
VBUS Selector
Switch (SW1)
FAULT LED
BCR Controller
(CYPD3177-24LQXQ)
3.3V output
From BCR
GPIO Header
Terminal Block
(DC_OUT)
Safe 5V Output
5A PFET
(Load Switch)
Type-C Connector
VBUS Power LED
VBUS Voltage
Selectors
VBUS Current
Selectors
TOP BOTTOM
Table 2-1 lists the components of the CY4533 BCR EVK. A detailed Bill-of-Materials list is available in the design files on
the kit webpage.
Table 2-1. A Brief List of Components in the CY4533 EVK
REFDES
Component
Description
U1
EZ-PD BCR Controller
Barrel Connector Replacement Controller i.e. CYPD3177-24LQXQ device
(referred to as “BCR” through this document). This manages the USB Type-C port
and controls the load switch (PFET).
J2
Type-C Connector
A power-only USB Type-C connector.
SW1
Rotary Switch
A single-pole 5-throw switch. Set this switch to different positions to change the
maximum voltage negotiated on VBUS. See VBUS Voltage and Current Selectors
for details.
Q1
PFET as a Load Switch
A back-to-back PMOSFET used as a load switch isolating the system power from
VBUS. See DC Power Transfer System for details.
R3, R5
VBUS_MAX Resistor Selector
Resistor dividers that set the maximum and minimum voltage that BCR will
negotiate with the USB Type-C charger. See VBUS Voltage and Current Selectors
for details.
R11, R14
VBUS_MIN Resistor Selector
R10, R12
ISNK_COARSE Resistor Selector
Resistor dividers that set the coarse and fine settings for minimum current that
BCR device will negotiate with the USB Type-C charger. See VBUS Voltage and
Current Selectors for details.
R13, R4
ISNK_FINE Resistor Selector
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CY4533 EZ-PD™ BCR Evaluation Kit Guide, Document Number: 002-25263 Rev. *B 8
REFDES
Component
Description
J1
8-pin GPIO, I2C and FLIP Header
I/Os from BCR exposed to an external controller. See 8-Pin I/O Header for details.
D1, D2
Fault and Power LEDs
LEDs indicating system state. See FAULT LED and Safe 5V Load Switch for
details.
J3
“DC_OUT” Terminal Block
Terminal block to measure output voltage of CY4533 BCR EVK or to connect any
external electronic load.
2.2 BCR System Overview
All powered electronic devices need a power source to operate normally or to charge their battery. Such devices often have
a barrel receptacle connector and a corresponding DC barrel power adapter to supply power.
Figure 2-2 is an example of one such combination.
Figure 2-2. Typical Electronic Device and its DC Barrel Power Adapter
DEVICE
BARREL
ADAPTER
AC SOCKET
Such electronic devices usually require a specific voltage and current output from the power adapter. To satisfy this, the DC
barrel adapter’s plug is often custom-made for a device.
USB was the first connector to introduce a standard method of supplying 7.5W power at 5V to electronic devices. A device
with a USB Micro-B connector can use a standard USB charger that can also be used with other devices with Micro-B ports.
USB Type-C extends this approach for devices that consume up to 100W of power.
The EZ-PD BCR controller makes the transition from DC barrel to USB Type-C easier by offering a plug-and-play approach
to power input design.
Figure 2-3. Newer Electronic Devices Powered by USB Type-C Power Adapters
DEVICE
USB-C CABLE
USB-C
CHARGER
AC SOCKET
The CY4533 EVK therefore has a USB Type-C connector on one end to negotiate power with Type-C power adapters. It has
a terminal block J3 to which any cable with a DC barrel plug can be connected. The EVK is therefore a converter between
USB Type-C and a DC Barrel plug.
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CY4533 EZ-PD™ BCR Evaluation Kit Guide, Document Number: 002-25263 Rev. *B 9
Figure 2-4. Using the CY4533 EVK to Convert USB Type-C Power Adapter to Legacy Barrel Adapter
DEVICE
USB-C CABLE
USB-C
CHARGER
CY4533
AC SOCKET
2.3 Block Diagram and Functional Description
Figure 2-5 shows the block diagram of the CY4533 BCR EVK.
Figure 2-5. CY4533 Block Diagram
BCR
V3P3
VBUS
HPI (I2C)
CC1/CC2
D+/D-
DC_OUT
5V_OUT
FLIP
VBUS
MIN
VBUS
MIN
ISNK
COARSE
ISNK
FINE
CC1/CC2
D+/D-
VDDD
FAULT
SAFE_OUT_EN
VBUS_FET_EN
HPI
USB Type
-C
CY4533 BCR EVK
V3P3 V3P3 V3P3 V3P3
VBUS
The EZ-PD BCR controller is a new device in the USB Type-C family of devices from Cypress for power sink applications.
This device combines a certified USB Type-C r1.2 and Power Delivery r3.0 subsystem, high-voltage analog for protection and
monitoring, and a load switch controller in an easy-to-use package.
The CY4533 EVK features an onboard BCR controller which communicates with a USB Type-C power adapter to negotiate
for the proper voltage and current, as specified by onboard resistors. The DP, DM lines from the BCR controller are connected
to the Type-C connector for future usage.
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CY4533 EZ-PD™ BCR Evaluation Kit Guide, Document Number: 002-25263 Rev. *B 10
The CY4533 EVK has a green LED to indicate the availability of VBUS and a red LED to indicate a fault with the connection.
A few I/O pins from BCR are taken out on an 8-pin header for use with an external SoC or controller.
2.3.1 EZ-PD BCR Controller Features
Fixed-function USB Type-C and Power Delivery controller supporting USB-PD Rev 3 and Type-C Rev 1.2
Integrated precision Rd and dead-battery Rd termination resistors
Integrated regulator to power from VBUS
Supports a high-voltage P-MOSFET gate driver with slew-rate control
Supports on-chip OVP and UVP to protect system from faults
System level ESD protection on CC, VBUS, DP and DM pins. ±8kV Contact Discharge and ±15kV Air Gap Discharge
based on IED61000-4-2 Level 4C
Available in a 24-pin QFN Package
For more information, refer to the BCR datasheet.
2.3.2 DC Power Transfer System
Figure 2-6. VBUS Net and P-FET Load Switch
Power supplied by the USB Type-C power adapter is sent to an external device or load through a set of back-to-back Power
PMOSFETs. The PMOSFETs are used for the following functions:
Reduce inrush current due to large capacitive loads. The BCR device turns the FETs on slowly to ensure that the inrush
current is limited and controls the rise time of the DC output voltage. The RC circuit of R21 and C8 also help in slowing
the FET turn-on time, and its values can be modified to change the turn-on behavior for application specific needs.
When the VBUS input on the USB Type-C connector is out of range, the BCR device turns the FETs off to protect the
rest of the system.
If the attached USB Type-C power adapter cannot supply the voltages required by the system (as indicated by the resistor
divider selectors), the BCR device turns the FETs off.
The output of the FETs is connected to a two-terminal block J3. The system to be evaluated can be powered using this block.
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2.3.3 VBUS Voltage and Current Selectors
Figure 2-7. Four Resistor Dividers that Select VBUS Voltage and Current
The range of voltages and currents that the BCR device will negotiate with the USB Type-C power adapter is determined by
a set of resistor dividers.
The dividers on the VBUS_MIN and VBUS_MAX pins of the BCR (R3 and R5 for VBUS_MAX, R11 and R14 for VBUS_MIN)
determine the minimum and maximum voltages that BCR will negotiate. By default, VBUS_MIN is set to 0V, and the 5-position
switch is used to determine the VBUS_MAX value. However, for customers using the BCR device for their end application,
the VBUS_MAX voltage can be finalized using the resistor divider network values as shown in Table 2-2 instead of using the
5-position switch SW1. If you want to use the resistor divider network on the kit for VBUS_MAX, then the switch SW1 must
be at position 5.
For example, if the divider on VBUS_MIN is set to 9V (i.e. R11 = 5kΩ pull-up, R14 = 1kΩ pull-down) and VBUS_MAX is set
to 12V (R3 = 5kΩ pull-up, R5 = 2.4kΩ pull-down), the BCR device will request any voltage between 9V and 12V from the
power adapter, always preferring the highest voltage. See Table 2-2 as an example for the pull-up and pull-down resistor
values.
Table 2-2. Resistor Divider Values for Achieving Desired VBUS_MIN and VBUS_MAX Voltages
Voltage on VBUS_MAX or
VBUS_MIN Pin of BCR
Device (V)
Correlated VBUS
Voltage(V)
Pull-Up Resistor Value
for R3 or R11 (kΩ)
Pull-Down Resistor Value
for R5 or R14 (kΩ)
3.3 * (0/6)
5
None (DNP)
0
3.3 * (1/6)
9 5 1
3.3 * (2/6)
12 5 2.4
3.3 * (3/6)
15 5 5
3.3 * (4/6)
19 5 10
3.3 * (6/6)
20
0
None (DNP)
If the power adapter cannot supply 9V or 12V, or power in between, BCR will turn the load switch OFF and will assert FAULT.
Similarly, the dividers on ISNK_COARSE and ISNK_FINE determine the Operating Current communicated to
the Type-C power adapter (in the Request Data Object; see Section 6.4.2 of the USB-PD Specification Rev 3.0
Version 1.2). The Operating Current value (ISNK) is the sum of currents indicated by ISNK_COARSE and
ISNK_FINE. By default, the maximum current is set to 900mA. See Table 2-3 and Table 2-4 as examples for the
pull-up and pull-down resistor values for the resistor dividers on ISNK_COARSE and ISNK_FINE respectively.
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For scenarios where the operating current value ISNK is greater than 5A (i.e. ISNK_COARSE + ISNK_FINE >
5A), the BCR device will limit the Operating Current (ISNK) value to 5A.
Table 2-3. Resistor Divider Values for Achieving Desired ISNK_COARSE Current Values
Voltage on ISNK_COARSE
(V)
Pull-Up Resistor on
ISNK_COARSE (R10)
(kΩ)
Pull-Down Resistor on
ISNK_COARSE (R12)
(kΩ)
ISNK_COARSE
(A)
3.3 * (0/6)
None (DNP)
0
0
3.3 * (1/6)
5 1 1
3.3 * (2/6)
5
2.4
2
3.3 * (3/6)
5 5 3
3.3 * (4/6)
5
10
4
3.3 * (6/6)
0
None (DNP)
5
Table 2-4. Resistor Divider Values for Achieving Desired ISNK_FINE Current Values
Voltage on ISNK_FINE (V)
Pull-Up Resistor on
ISNK_FINE (R13) (kΩ)
Pull-Down Resistor on
ISNK_FINE (R4) (kΩ)
ISNK_FINE (mA)
3.3 * (0/6)
None 0 0
3.3 * (1/6)
5 1 250
3.3 * (2/6)
5
2.4
500
3.3 * (3/6)
5 5 750
3.3 * (6/6)
0
None (DNP)
900
See Changing VBUS Voltage and Current Requested from Power Adapter for more details on how the BCR uses these
pins to select VBUS voltages and how you can change them.
2.3.4 FAULT LED and Safe 5V Load Switch
Figure 2-8. Red FAULT LED and Safe 5 V Load Switch
The FAULT LED is turned ON in the following conditions:
The Type-C power adapter cannot provide the voltages or current required by the system.
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Voltage on VBUS is 20% below the VBUS_MIN setting or 20% above the VBUS_MAX setting.
When the Type-C power adapter cannot provide the voltage or current set in the selector pins, the BCR part negotiates for
5V at 900mA and turns ON the Safe 5V Load Switch (Q2 on the EVK).
A system can use this voltage to either run in reduced feature mode or notify you that an incompatible power adapter is
attached.
2.3.5 8-Pin I/O Header
Figure 2-9. 8-pin GPIO Header
The CY4533 EVK has an 8-pin header (J1) that exposes a few pins, the internal 3.3V rail generated by the BCR device, and
ground pins for debug use.
The HPI pins (HPI_SCL and HPI_SDA) are connected to an I2C slave on the BCR at address 0x08 (7-bit). Host Processor
Interface (HPI) is a proprietary protocol on top of I2C that exposes control and status registers of the BCR device. See the
BCR datasheet for details about this interface.
The FLIP pin can be used to detect the orientation of the Type-C cable connection (right-side-up or upside-down). The FLIP
pin is a simple push-pull output from the BCR that indicates if the Type-C power adapter was attached right-side-up (FLIP =
0V) or upside-down (FLIP = 3.3V). The polarity of this signal can be used to control a Multiplexer for flipping the USB signals
in an application that is a Power Sink and Data Host/Device.
2.4 Changing VBUS Voltage and Current Requested from Power Adapter
The BCR controller executes a capability matching algorithm to select the best voltage and current from the attached USB
Type-C power adapter.
Internally, the BCR maintains a Sink Capabilities list based on the VBUS voltage and current selector pins. See Table 2-5
for the capabilities.
Table 2-5.Sink Capabilities Stored Inside the BCR Controller
Field in the PDO
Sink Capability/PDO #1
Sink Capability/PDO #2
Type of PDO (Power Delivery Object)
Fixed Supply
Variable Supply
Min Voltage
5V
VBUS_MIN Value
Max Voltage
5V
VBUS_MAX Value
Current
900mA
ISNK_COARSE + ISNK_FINE
If the VBUS_MIN value is higher than 5V, then the “Higher Capability” bit is set in the first Sink Power Delivery Object
(PDO). This tells the Type-C power adapter that voltages higher than 5V are needed by the system.
The capability matching algorithm works as follows:
1. Loop through the power adapter’s source PDOs from highest voltage first to find the first PDO that satisfies the following
conditions:
a. Source_PDO_Voltage ≥ VBUS_MIN
b. Source_PDO_Voltage ≤ VBUS_MAX
c. Source_PDO_Maximum _Current ≥ ISNK_COARSE + ISNK_FINE
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2. If all three conditions are satisfied, then BCR sends a request for this PDO with Operating Current set to ISNK_COARSE
+ ISNK_FINE.
3. If any condition is not satisfied, the BCR device requests 5V (PDO #1) with 900mA Operating Current. The BCR device
also sets the Capability Mismatch flag in the request message.
a. Once this mismatch of capabilities is detected, FAULT goes HIGH (3.3V strong drive) and the “Safe 5V” load
switch (Q2) turns ON.
To modify the VBUS_MAX value, use the rotary switch. To modify the VBUS_MIN, ISNK_COARSE, and ISNK_FINE
values, mount the correct resistor on the bottom of the board.
See the layout design files on the CY4533 EZ-PDTM BCR Evaluation Kit webpage.
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CY4533 EZ-PD™ BCR Evaluation Kit Guide, Document Number: 002-25263 Rev. *B 15
3. Kit Operation
This chapter describes how to configure the CY4533 EZ-PD BCR EVK to demonstrate the functionality as a USB Type-C
Power Sink attached to an external device or load.
3.1 External Hardware Required for Demo
A USB Type-C Power Adapter or Power Bank
Example Power Adapters: Apple 30W Power Adapter, Google 18W Type-C Charger, HP 45W Laptop AC Power
Adapter
Example Power Banks: Anker PowerCore 13000 C, RAVPower 20100 Portable Charger
A cable to connect the power adapter or power bank ((if not already provided with the USB-C Power Adapter) to the
Type-C receptacle on the EVK
An electronic device that is powered by a DC barrel connector (for Demo #1: Convert an Electronic Device to Power it
from USB Type-C)
A DC barrel power adapter for the electronic device (for Demo #1: Convert an Electronic Device to Power it from USB
Type-C)
A 3mm flat head screw driver
A wire stripper
A multimeter to measure voltages (for Demo #2: Test with a Multimeter and EZ-PD Protocol Analyzer)
3.2 Running the Demos
3.2.1 Demo #1: Convert an Electronic Device to Power it from USB Type-C
To set up the demo, do the following:
1. Cut the DC barrel power’s cable and strip the two wires (power and ground) on the end of the cable with the barrel
plug.
2. Connect the power wire to the positive terminal and connect the ground wire to the negative terminal of the terminal
block J3 on the CY4533 EVK (voltage on terminal block J3 is referred to as “DC_OUT” in Table 3-1). See Figure 2-1
to determine the polarity of the terminal block or look at the markings on the back of the board.
Your CY4533 EVK is now a USB Type-C to DC Barrel converter. Now set the rotary switch (SW1) to the position
corresponding to the voltage you want from the Type-C power adapter. See Table 3-1 for details.
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Kit Operation
CY4533 EZ-PD™ BCR Evaluation Kit Guide, Document Number: 002-25263 Rev. *B 16
Table 3-1. VBUS_MAX Values corresponding to SW1 Rotary Switch Positions
SW1 Switch Position
Max VBUS Requested (V)
DC_OUT Voltage (V)
Minimum Current Requested (mA)
1 5 5
900
2 9 9
900
3
12
12
[1]
900
4
15
15
[2]
900
5
20
20
[2]
900
Note 1: Newer USB Type-C power adapters may not provide 12V. In that case, you will see 9V instead at SW1 position 3.
Note 2: Use 45W or higher wattage USB Type-C power adapters to get higher voltages (15V, 20V).
To run the demo, connect the barrel plug to the device. Then, connect a USB Type-C cable to the power adapter (or Power
Bank) and to the CY4533 EVK.
The device will now be powered by the USB Type-C power adapter (or Power Bank). Figure 3-1 and Figure 3-2
illustrate the setup.
Figure 3-1. CY4533 EVK Connected with Barrel Plug Cable
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Kit Operation
CY4533 EZ-PD™ BCR Evaluation Kit Guide, Document Number: 002-25263 Rev. *B 17
Figure 3-2. Complete Setup: Amazon Echo, CY4533 EVK with Barrel Plug Cable, and Apple 30W USB-C Power Adapter
3.2.2 Demo #2: Test with a Multimeter and EZ-PD Protocol Analyzer
In this demo, a multimeter is connected to the CY4533 EVK to test the various voltages offered by the USB Type-C power
adapter (or Power Bank). You can also connect an electronic load in parallel with the multimeter to test current capabilities
of the power adapter (or power bank) and the CY4533 EVK.
In addition, you will use the CY4500 EZ-PD Protocol Analyzer to analyze the USB Power Delivery packets exchanged
between BCR and the power adapter.
Figure 3-3. CY4533 EVK, Multimeter, and a Type-C Power Adapter (Apple 30 W USB-C Adapter)
V A
5.10V
V GND
A
BCR
CY4533 EVK
1
234
5
Type-C
USB-C CABLE
TYPE-C POWER
ADAPTER
CY4500
EZ-PD Analyzer
Connect to a PC
DC_OUT
To set up the demo, do the following:
1. Connect a multimeter to the DC_OUT terminal block J3. If desired, you may also have a load connected in parallel
with the multimeter. See Board Details to determine the polarity of the terminal block or look at the markings on the
back of the board.
2. Connect the CY4533 EVK to the EZ-PD Protocol Analyzer’s plug. Connect the analyzer to your PC using the supplied
USB Micro-B cable.
3. Ensure that the analyzer software and the necessary drivers are installed. See CY4500 EZ-PD Protocol Analyzer's
website for details.
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Kit Operation
CY4533 EZ-PD™ BCR Evaluation Kit Guide, Document Number: 002-25263 Rev. *B 18
4. Open the analyzer software and start a capture.
5. Connect a USB Type-C power adapter to the Type-C receptacle of the analyzer. You will see USB Power Delivery
packets on the analyzer software.
Each USB Type-C power adapter will advertise a list of voltage and current combinations (called PDOs). The BCR
controller will select the best PDO based on a set of rules described in Changing VBUS Voltage and Current Requested
from Power Adapter.
In short, the VBUS_MAX rotary switch governs the highest voltage that the BCR device will try to request. If that voltage is
unavailable, it looks for the next highest voltage, and so on.
To test this, perform the following steps on the demo setup:
1. Set the VBUS_MAX Rotary Switch (SW1) to position 1. Verify that the multimeter displays a voltage between 4.5V
and 5.5V.
2. Set the VBUS_MAX rotary switch (SW1) to position 2. Verify that the multimeter displays a voltage between 8.55V
and 9.45V. If the power adapter does not support this voltage, you will see ~5V.
3. Similarly loop through all voltages and verify that the multimeter reads VBUS_MAX ± 5%, if the power adapter
supports that voltage.
3.3 Behavior under Mismatching Capabilities
If the attached USB Type-C power adapter can supply a VBUS voltage within VBUS_MIN and VBUS_MAX limits, the CY4533
EVK will turn the load switch ON to pass the voltage onto the terminal block J3.
On the other hand, if the attached power adapter does not have a matching voltage/current combination, the BCR device
will indicate a capability mismatch to the power adapter and will turn the load switch OFF. See VBUS Voltage and Current
Selectors for details.
Under mismatch conditions, the red FAULT LED D1 turns ON and the VBUS voltage is routed to the VSAFE5V test point
(TP12). See FAULT LED and Safe 5V Load Switch for details.
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CY4533 EZ-PD™ BCR Evaluation Kit Guide, Document Number: 002-25263 Rev. *B 19
A. Terminology
Terminology
This guide assumes that you are familiar with the fundamentals of the Type-C connectivity and the USB Power Delivery
protocol. A brief description of Type-C terms is provided here for reference.
Alternate Modes: A feature of a USB Type-C system whereby one or both SuperSpeed lanes may be repurposed for use
with a different serial protocol, such as a DisplayPort, eSATA, or Thunderbolt.
Client: A USB peripheral such as a hub, docking station, or monitor.
Configuration channel (CC): A USB Type-C bus wire used to transmit protocol signals. This is a half-duplex 300 kHz
signal.
Consumer: A Type-C port that sinks power from VBUS.
DisplayPort: A digital display interface standard developed by the Video Electronics Standards Association. It is used
primarily to connect a video source to a display such as a computer monitor.
Downstream facing port (DFP): A USB Type-C port on a host or a hub to which devices are connected.
Dp, Dn: USB Type-C bus wires used to transmit and receive USB 2.0 data.
Dual-role port (DRP): A USB Type-C port that can operate as either a DFP or a UFP.
Electronically Marked Cable Assembly (EMCA): A USB cable that includes an IC that reports cable characteristics (such
as current rating) to the Type-C ports.
GNDRX2pRX2nV
BUS
DnCC SBU1DpV
BUS
TX1nTX1pGND
GNDTX2pTX2nV
BUS
SBU2 V
CONN
V
BUS
RX1nRX1p
GND
B1B2B3B4B5B8B9B10B11B12
A12A11A10A9A8A7A6A5A4A3A2A1
2.4mm
2.5mm
GNDRX2pRX2nV
BUS
Dn1CC1 SBU1Dp1V
BUS
TX1nTX1pGND
GNDTX2pTX2nV
BUS
SBU2 CC2V
BUS
RX1nRX1p
GND
B1B2B3B4B5B8B9B10B11B12
A12A11A10A9A8A7A6A5A4A3A2A1
Dp2Dn2
B6B7
USB3.0 Type-C Plug
USB3.0 Type-C Receptacle
Host: A USB Host system such as a PC, notebook, and laptop.
Provider: A Type-C port that sources power over VBUS.
Sideband use (SBU): A USB Type-C bus wire used for non-USB control signals, such as DisplayPort control signals.
Type-C Transceiver: A transmitter/receiver that communicates over the CC.
TX1p, TX1n, RX1p, RX1n, TX2p, TX2n, RX2p, and RX2n: USB Type-C bus wires used to transmit and receive
SuperSpeed USB and PCIe or DisplayPort data.
Upstream facing port (UFP): A USB Type-C port on a device or a hub that connects to a host or the DFP of a hub.
USB Power Delivery (USB PD, PD): A new USB standard that increases maximum power delivery over USB from 7.5 W
to 100 W.
USB Type-C (Type-C): A new standard with a slimmer USB connector and a reversible cable, capable of sourcing up to
100 W of power and supporting Alternate Modes.
VBUS: A USB Type-C bus wire used for power; initially 5 V, but can be increased up to 20 V on USB PD systems.
VCONN: A USB Type-C bus wire used to power the IC in the EMCA.
Page 20
Revision History
Document Title: CY4533 EZ-PD™ Barrel Connector Replacement (BCR) Evaluation Kit Guide
Document Number: 002-25263
Revision
Issue Date
Origin of
Change
Description of Change
**
11/30/2018
KUMR/VG
T
New EVK kit guide.
*A
02/08/2019
VGT
Updated Figure 2-1, Figure 2-6, Figure 2-9, and Table 2-1.
Updated DC Power Transfer System section.
Updated Copyright information.
*B
03/22/2019
VGT
Edited document for miscellaneous textual edits.
Document Revision History
CY4533 EZ-PD™ BCR Evaluation Kit Guide, Document Number: 002-25263 Rev. *B 20
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