CY43775(H)
Dual-Port USB PD3.1 Controller
Description
The CY43775/CY43775H (CY43775(H)) is a highly integrated USB Type-C® power delivery (PD) controller and targeted for dual-port or multiple-port Type-C PD adapter and charger applications. The CY43775 is compliant to USB Power Delivery Rev3.1 V1.8 Standard Power Range (SPR) with Programmable Power Supply (PPS) and Qualcomm® QC2.0/3.0/4/4+/5 protocols. With external resistor divider circuitry, the CY43775H could support PD3.1 Extended Power Range (EPR) 28V with Adjustable Voltage Supply (AVS).
The CY43775(H) is designed to support two DC/DC controllers or converters for two independent, 2C or 1C1A, chargers. Through Configuration Channels (CC) communication of each port, the CY43775(H) determines the requested Power Device Object (PDO) from attached Type-C device, and forms Constant Voltage (CV) and Constant Current (CC) loops with each DC/DC through its built-in DAC feedbacks. Furthermore, by controlling the power enable pin of each attached DC/DC, the CY43775(H) could support desired voltage output without using of output enable MOS. This mechanism optimizes overall system bill-of-material (BOM) as well as improvement of system efficiency.
For even lower system BOM cost optimization, the CY43775(H) supports common output voltage for simultaneous two-port attachment with 5V output charging mode. A single feedback loop is formed through OCDRV pin in the CY43775(H) to opto-couple to the power stage without any additional DC/DC controller / converter.
The CY43775(H) also supports I2C interface, and GPIO3/OTP is used as slave addressing for smart power sharing application of more than one CY43775(H). When the GPIO3/OTP pin is programmed as a current source, it could be used for thermal management purpose by attaching a negative-temperature-coefficient (NTC) resistor.
The CY43775(H) can offer comprehensive safety protection schemes, including over-voltage protection (OVP), under-voltage protection (UVP), over-current protection (OCP), short-circuit protection (SCP) and/or over-temperature protection (OTP). Besides, based on high-voltage process, the CY43775(H) offers VBUS short protection for CC1/CC2 pins up to 28V.
The CY43775(H) is designed to support two DC/DC controllers or converters for two independent, 2C or 1C1A, chargers. Through Configuration Channels (CC) communication of each port, the CY43775(H) determines the requested Power Device Object (PDO) from attached Type-C device, and forms Constant Voltage (CV) and Constant Current (CC) loops with each DC/DC through its built-in DAC feedbacks. Furthermore, by controlling the power enable pin of each attached DC/DC, the CY43775(H) could support desired voltage output without using of output enable MOS. This mechanism optimizes overall system bill-of-material (BOM) as well as improvement of system efficiency.
For even lower system BOM cost optimization, the CY43775(H) supports common output voltage for simultaneous two-port attachment with 5V output charging mode. A single feedback loop is formed through OCDRV pin in the CY43775(H) to opto-couple to the power stage without any additional DC/DC controller / converter.
The CY43775(H) also supports I2C interface, and GPIO3/OTP is used as slave addressing for smart power sharing application of more than one CY43775(H). When the GPIO3/OTP pin is programmed as a current source, it could be used for thermal management purpose by attaching a negative-temperature-coefficient (NTC) resistor.
The CY43775(H) can offer comprehensive safety protection schemes, including over-voltage protection (OVP), under-voltage protection (UVP), over-current protection (OCP), short-circuit protection (SCP) and/or over-temperature protection (OTP). Besides, based on high-voltage process, the CY43775(H) offers VBUS short protection for CC1/CC2 pins up to 28V.
Features
- Single chip dual-port USB PD source controller
- Compliant with USB PD Revision 3.1, V 1.8
- Support Qualcomm® QC2.0/3.0/4/4+/5 protocols
- Support SPR/PPS 3.3V to 21V with discharge function
- Support EPR/AVS up to 28V with resistor divider (CY43775H only)
- Low side current sensing resistor (5mΩ)
- Support opto-coupling feedback for AC/DC adapter (CY43775 only)
- Support 2 DAC feedback paths for the external DC/DCs
- Built-in regulator for CV and CC control
- Support e-Marker cable detection
- Support smart power sharing functions for dual-port charging with thermal power management
- Support I2C interface for multi-port applications
- OTP ROM for main firmware and MTP ROM for system configuration
- Support OCP/SCP/OTP/OVP/UVP with auto restart
- Support VBUS short protection for CC1/CC2 pins up to 28V
- Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
- Halogen and Antimony Free. “Green” Device (Note 3)
Pin Assignments
W-QFN4040-24 (Type A1)Applications
- USB type-C multiple-ports PD3.1 PPS travel chargers
- DC-powered USB type-C multiple-port PD3.1 PPS car chargers
Notes:
1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS), 2011/65/EU (RoHS 2) & 2015/863/EU (RoHS 3) compliant.
2. Contact http://www.canyon-semi.com.tw for more information of Halogen- and Antimony-free, "Green" and Lead-free.
3. Halogen- and Antimony-free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and <1000ppm antimony compounds.
USB Type-C® is a registered trademark of USB Implementers Forum.
Qualcomm® is a trademark of Qualcomm Incorporated, registered in the United States and other countries.
1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS), 2011/65/EU (RoHS 2) & 2015/863/EU (RoHS 3) compliant.
2. Contact http://www.canyon-semi.com.tw for more information of Halogen- and Antimony-free, "Green" and Lead-free.
3. Halogen- and Antimony-free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and <1000ppm antimony compounds.
USB Type-C® is a registered trademark of USB Implementers Forum.
Qualcomm® is a trademark of Qualcomm Incorporated, registered in the United States and other countries.
Typical Applications Circuit
The CY43775(H) is a dual-channel PD3.1 PD source controller, and targeted for multiple-port Type-C PD adapter and charger applications.
Figure 1 shows a typical 2 independent-channel adapter, 2C or 1C1A, implemented by an CY43775 and two independent DC/DC controllers / converters. Once the PDO is determined through CC communication between adapter and its attached device, the CY43775 can control the DC/DCs to deliver the negotiated PDO output to the power consumer side through the DAC feedback (VFB_A and VFB_B) loop. By controlling power enable pin of the associated DC/DC controller, the CY43775 can support two independent charging ports without the need of a VBUS MOS switch at each port.
The CY43775 also supports I2C interface and GPIO3/OTP pin, used as slave addressing, for smart power sharing application of more than one CY43775. The GPIO3/OTP pin can also be programmed as a current source, so that CY43775 could be used for thermal management purpose by attaching a NTC resistor on GPIO3/OTP pin.
Figure 1 shows a typical 2 independent-channel adapter, 2C or 1C1A, implemented by an CY43775 and two independent DC/DC controllers / converters. Once the PDO is determined through CC communication between adapter and its attached device, the CY43775 can control the DC/DCs to deliver the negotiated PDO output to the power consumer side through the DAC feedback (VFB_A and VFB_B) loop. By controlling power enable pin of the associated DC/DC controller, the CY43775 can support two independent charging ports without the need of a VBUS MOS switch at each port.
The CY43775 also supports I2C interface and GPIO3/OTP pin, used as slave addressing, for smart power sharing application of more than one CY43775. The GPIO3/OTP pin can also be programmed as a current source, so that CY43775 could be used for thermal management purpose by attaching a NTC resistor on GPIO3/OTP pin.
Figure 1: The CY43775 supports dual-port USB PD3.1 charger with separate FB feedback and without VBUS MOS switch at each portFor even lower system BOM cost solution, Figure 2 illustrates how an AC off line adapter is implemented by photo-coupling the OCDRV signal to the power stage without any additional DC/DC controller / converter, where the CY43775 chip can support 2C or 1A1C charging outputs with a common 5V voltage when two ports are used at the same time.
Figure 2: The CY43775 supports a low-cost dual-port USB PD3.1 PPS charger with optical-coupler feedback modeTypical Applications Circuit (Continued)
Furthermore, with the external resistor divider circuitry to reduce the input voltage to discharging points VBUS_A and VBUS_B, the CY43775H could support PD3.1 Extended Power Range (EPR) 28V with Adjustable Voltage Supply (AVS) for multi-port charger applications as shown in Figure 3 below.
Figure 3: The CY43775H supports PD3.1 EPR 28V through external resistor networkFunctional Block Diagram
Figure 4: The block diagram shows the key functions of the CY43775(H) dual-channel USB PD controller