CY43785
Dual-Port USB PD3.1 Controller Supporting Displayport Alternate Mode
Description
The CY43785/CY43785H (CY43785) is a highly integrated USB Type-C® power delivery (PD) controller and targeted for dual-port Type-C PD monitors, projectors and hubs. It is compliant to USB Power Delivery PD3.1 V1.8 with Standard Power Range (SPR) / Programmable Power Supply (PPS) up to 21V and Qualcomm® QC2.0/3.0/4/4+/5 protocols. With external resistor divider circuitry, the CY43785H could support PD3.1 Extended Power Range (EPR) 28V with Adjustable Voltage Supply (AVS).
When the CY43785 used in Type-C PC monitors and TV display devices, the Type-C port #A can support Dual-Role Power (DRP) charging as well as Upstream Facing Port (UFP) for data/video transfer, including Type-C to Type-C mode and DisplayPort™-Over-Type-C Alternate (Alt) mode. The CY43785 manages various parameter setting for signal conditioning and routing chips through I2C interface. The Type-C port #B could be configured to support additional power source charging or power sink input.
By controlling Enable Pin of the associated DC/DC controller with GATE_A/B pin, and connecting VFB_A/B pin to its DC/DC feedback pin, the CY43785 supports two independent USB Type-C PD3.1 PPS charging without PD output MOS at each port.
The CY43785 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). Besides, based on high-voltage process, the CY43785 supports VBUS short protection for CC1/CC2 up to 28V.
The CY43785 supports W-QFN5050-28 package.
When the CY43785 used in Type-C PC monitors and TV display devices, the Type-C port #A can support Dual-Role Power (DRP) charging as well as Upstream Facing Port (UFP) for data/video transfer, including Type-C to Type-C mode and DisplayPort™-Over-Type-C Alternate (Alt) mode. The CY43785 manages various parameter setting for signal conditioning and routing chips through I2C interface. The Type-C port #B could be configured to support additional power source charging or power sink input.
By controlling Enable Pin of the associated DC/DC controller with GATE_A/B pin, and connecting VFB_A/B pin to its DC/DC feedback pin, the CY43785 supports two independent USB Type-C PD3.1 PPS charging without PD output MOS at each port.
The CY43785 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). Besides, based on high-voltage process, the CY43785 supports VBUS short protection for CC1/CC2 up to 28V.
The CY43785 supports W-QFN5050-28 package.
Features
- Compliant with USB PD Rev 3.1 V1.8 EPR mode
- Support SPR / PPS up to 21V with 20mV/step and 50mA/step
- Support EPR / AVS up to 28V with resistor divider (CY43785H only)
- Support UFP for data/video transfer and Type-C Alternative Mode for DisplayPort™ (DP)
- Support I2C interface for parameter setting of signal conditioning and routing chips
- Support USB PD3.1 DRP power control
- Support Qualcomm® QC2.0/3.0/4/4+/5 protocols
- Support 2 DAC feedback paths for the external DC/DCs
- Support E-Marker cable detection
- OTP ROM for main firmware and MTP ROM for system configuration
- Support OVP/UVP/OCP/SCP/OTP 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-QFN5050-28 (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. 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 CY43785 is a dual independent port USB Type-C® PD3.1 controller, targeting for applications of PD monitors, projectors and hubs.
When the CY43785 used in Type-C PC monitors and TV display devices, the Type-C port #A can support DRP charging as well as UFP for data/video transfer, including Type-C to Type-C mode and DisplayPort™-Over-Type-C Alternate (Alt) mode. The CY43785 manages various parameter setting for signal conditioning and routing chips (i.e. re-driver, re-timer, and cross-bar switches, etc) through I2C interface. Meanwhile, the Type-C port #B could be configured to support additional power source charging or power sink consumer.
When used as a PD source controller, the CY43785 can connect VFB_A / VFB_B pins to its corresponding DC/DC feedback pins to form power charging loop. At the same time, the CY43785 can control the VBUS output on/off by connecting the Enable Pins of the associated DC/DC controllers with GATE_A / GATE_B pins. As a result, the CY43785 can save the PD VBUS output MOS switch at each port.
When the CY43785 used in Type-C PC monitors and TV display devices, the Type-C port #A can support DRP charging as well as UFP for data/video transfer, including Type-C to Type-C mode and DisplayPort™-Over-Type-C Alternate (Alt) mode. The CY43785 manages various parameter setting for signal conditioning and routing chips (i.e. re-driver, re-timer, and cross-bar switches, etc) through I2C interface. Meanwhile, the Type-C port #B could be configured to support additional power source charging or power sink consumer.
When used as a PD source controller, the CY43785 can connect VFB_A / VFB_B pins to its corresponding DC/DC feedback pins to form power charging loop. At the same time, the CY43785 can control the VBUS output on/off by connecting the Enable Pins of the associated DC/DC controllers with GATE_A / GATE_B pins. As a result, the CY43785 can save the PD VBUS output MOS switch at each port.
Figure 1 – The dual independent port USB PD3.1 controller supports DRP for charging as well as UFP for data/video transfer.
A Type-C Hub Application Example
Based on CY43785 dual independent port architecture, a two-port USB Type-C multi-purpose Hub is illustrated in Figure 2, where Type-C port #A is used as DRP power source as well as data/video UFP with DisplayPort Alternate mode supported. At the same time, Type-C port #B can play as a PD power source or PD sink role to request power.
Based on CY43785 dual independent port architecture, a two-port USB Type-C multi-purpose Hub is illustrated in Figure 2, where Type-C port #A is used as DRP power source as well as data/video UFP with DisplayPort Alternate mode supported. At the same time, Type-C port #B can play as a PD power source or PD sink role to request power.
Typical Applications Circuit (Continued)
Figure 2 – A dual-port USB Type-C Hub application based on CY43785 is illustrated as above. Functional Block Diagram
Figure 3 – The highly integrated CY43785 internal block diagram