CY43781H
USB PD 3.1 EPR AVS Protocol Controller Supporting Displayport-Over-Type-C Alternate Mode
Description
The CY43781H is a highly integrated USB Type-C® power delivery (PD) controller targeted for monitors or TV power boards with USB Type-C ports. It supports USB PD3.1 V1.8 Standard Power Range (SPR) / Programmable Power Supply (PPS) up to 21V and Extended Power Range (EPR) / Adjustable Voltage Supply (AVS) up to 28V. In addition, the CY43781H implements cable-loss compensation and e-Marker detection functions.
When used in target applications for Type-C PC monitors and TV display devices, the CY43781H plays a central role of PD source charging as well as Upstream Facing Port (UFP) data/video transfer, including Type-C to Type-C Mode and DisplayPort™-Over-Type-C Alternate (Alt) Mode. The CY43781H manages various parameters setting through I2C interface for attached I2C slave signal controllers such as signal repeater and signal cross-bar switch to support required DisplayPort™-to-Type-C Pin Assignment.
Meanwhile, when the CY43781H co-works with a DC/DC controller, the PD VBUS can be turned on/off by enabling/disabling the corresponding DC/DC controller, and without the need of VBUS MOS switch accordingly.
The CY43781H offers 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). In addition, it supports VBUS short protection for CC1/CC2 pins up to 31V.
A one-time programmable ROM (OTPROM) is used for main firmware, and a multi-time programmable ROM (MTPROM) is provided for user configuration data. The CY43781H is packaged in W-QFN4040-24.
When used in target applications for Type-C PC monitors and TV display devices, the CY43781H plays a central role of PD source charging as well as Upstream Facing Port (UFP) data/video transfer, including Type-C to Type-C Mode and DisplayPort™-Over-Type-C Alternate (Alt) Mode. The CY43781H manages various parameters setting through I2C interface for attached I2C slave signal controllers such as signal repeater and signal cross-bar switch to support required DisplayPort™-to-Type-C Pin Assignment.
Meanwhile, when the CY43781H co-works with a DC/DC controller, the PD VBUS can be turned on/off by enabling/disabling the corresponding DC/DC controller, and without the need of VBUS MOS switch accordingly.
The CY43781H offers 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). In addition, it supports VBUS short protection for CC1/CC2 pins up to 31V.
A one-time programmable ROM (OTPROM) is used for main firmware, and a multi-time programmable ROM (MTPROM) is provided for user configuration data. The CY43781H is packaged in W-QFN4040-24.
Features
- USB-IF PD3.1 V1.8 SPR/EPR certified with TID: 9275
- Support SPR up to 100W and PPS up to 3.3V ~ 21V
- Support EPR up to 140W and AVS up to 15V ~ 28V
- Support Type-C Alternative Mode for DisplayPort™ (DP)
- Manage parameter setting for signal conditioning and routing (cross-bar switches) through I2C Interface for attached I2C slave devices
- Built-In CV and CC Control
- Support e-Marker cable detection
- Support cable loss compensation
- Embedded driver for output enable N-MOS switch
- Support USB PD output without the need of VBUS MOS switch
- Support feedback loop through Opto-couple or I2C bus
- OTP ROM for main firmware and MTP ROM for system configuration
- Support OCP/SCP/OTP/OVP/UVP with auto restart
- VBUS short protection for CC1/CC2 pins up to 31V
- 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
- Monitors with Type-C ports
- TV power boards with Type-C ports
- USB Type-C power and video Hubs
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. Please 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® and USB-C® are registered trademarks of USB Implementers Forum.
1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS), 2011/65/EU (RoHS 2) & 2015/863/EU (RoHS 3) compliant.
2. Please 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® and USB-C® are registered trademarks of USB Implementers Forum.
Typical Applications Circuit
The CY43781H is a highly integrated USB Type-C® power delivery (PD) controller targeted for monitors or TV power boards with USB Type-C ports. A typical application of the CY43781H used in a Type-C-Link-to-DP-Monitor (CLM) is illustrated in Figure 1, where it shows a typical Type-C PD monitor usage setup includes a Type-C PD monitor (either Type-C and/or DisplayPort™ connector), a Type-C PD host (e.g. Notebook PC, Mobile phone) and USB peripheral devices (e.g. SSD). The CLM module, with key controllers and interconnects, implements the required PD3.1 power charging and UFP video/data operations, including DisplayPort™-Over-Type-C Alternate mode.
When the Type-C attachment is completed between an active CLM module and the NB host, the power profile negotiation starts through sequence of Channel Configuration (CC) commands between the PD3.1 EPR/AVS protocol controller CY43781H and the Type-C host. Upon successful attachment process, the power profile selection is concluded, and the CY43781H enables the attached I2C buck-boost controller to output the matched power to the Type-C host for charging.
At the same time, the CY43781H plays as a data Upstream Facing Port (UFP), and enter the Alternative mode supporting by decoding out the VDM (vendor defined message) commands on CC line delivered from Type-C host side. The decoded information is then sent out through I2C interface to the high speed switches (i.e. PI3USB31531) and signaling chip (i.e. PI3DPX1207C), so that the data stream can be delivered from host side to the Display Port at the right routing path and with correct signaling accordingly.
To support development-debugging purposes, the CLM module adopts I2C IO Expander chip (PI4IOE5V9554) to monitor critical signals. Furthermore, the CY43781H minimize the standby power consumption (<40mWatt) of the overall CLM module.
Note –
When the Type-C attachment is completed between an active CLM module and the NB host, the power profile negotiation starts through sequence of Channel Configuration (CC) commands between the PD3.1 EPR/AVS protocol controller CY43781H and the Type-C host. Upon successful attachment process, the power profile selection is concluded, and the CY43781H enables the attached I2C buck-boost controller to output the matched power to the Type-C host for charging.
At the same time, the CY43781H plays as a data Upstream Facing Port (UFP), and enter the Alternative mode supporting by decoding out the VDM (vendor defined message) commands on CC line delivered from Type-C host side. The decoded information is then sent out through I2C interface to the high speed switches (i.e. PI3USB31531) and signaling chip (i.e. PI3DPX1207C), so that the data stream can be delivered from host side to the Display Port at the right routing path and with correct signaling accordingly.
To support development-debugging purposes, the CLM module adopts I2C IO Expander chip (PI4IOE5V9554) to monitor critical signals. Furthermore, the CY43781H minimize the standby power consumption (<40mWatt) of the overall CLM module.
Note –
Figure 1 – The CY43781H supports DP Alternative Mode for data link during the power sourcingFunctional Block Diagram
Figure 2 – The CY43781H functional block diagram