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High-Risk Device, or to affect its safety or effectiveness. Cypress is not liable, in whole or in part, and you shall and hereby do release Cypress from any claim, damage, or other liability arising from any use of a Cypress product as a Critical Component in a High-Risk Device.
Contents Safety Information .................................. 4 Introduction ..................................5 Kit Contents ................................5 1.1.1 Hardware Not Included with the Kit......................5 Getting Started ..............................5 Acronyms ................................6 Hardware ..................................7 Board Details ................................. 7 BCR System Overview ............................8 Block Diagram and Functional Description ......................9 2.3.1 EZ-PD BCR Controller Features ......................
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.
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.
Hardware REFDES Component Description 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 details.
V3P3 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.
Hardware 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 ...
Hardware 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.
Hardware 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 Pull-Up Resistor on Pull-Down Resistor on ISNK_COARSE...
Hardware 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.
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Hardware If all three conditions are satisfied, then BCR sends a request for this PDO with Operating Current set to ISNK_COARSE + ISNK_FINE. 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.
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,...
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Kit Operation 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) 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).
Kit Operation 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).
Kit Operation Open the analyzer software and start a capture. 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...
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.
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