TI Designs TIDA-00288 4-Port USB 3.0 Hub Reference Design TI Designs Design Features TI Designs provide the foundation that you need including methodology, testing and design files to quickly evaluate and customize the system. TI Designs help you accelerate your time to market. The TIDA-00288 is a fully functioning 4-Port USB3.0 hub: • Supports individual port power control • ESD protection on both upstream and downstream ports • Operates as a bus-powered device or from an external power source. • Supports operation as an USB 3.0 and USB 2.0 device Design Resources TIDA-00288 TPD6E05U06 TUSB8041RGC Tool Folder Containing Design Files TPS2003CDRC TPS2546 LMR10510XMF TPS22910AYZVR USB Power Switch USB Power Switch Voltage Regulator Load Switch ESD Diodes 4 Port USB Hub Featured Applications ASK Our E2E Experts WEBENCH® Calculator Tools • • • • Computer systems Docking stations Monitors Set-top boxes All trademarks are the property of their respective owners. TIDU614 – October 2014 Submit Documentation Feedback TIDA-00288 4-Port USB 3.0 Hub Reference Design Copyright © 2014, Texas Instruments Incorporated 1 www.ti.com An IMPORTANT NOTICE at the end of this TI reference design addresses authorized use, intellectual property matters and other important disclaimers and information. 2 TIDA-00288 4-Port USB 3.0 Hub Reference Design Copyright © 2014, Texas Instruments Incorporated TIDU614 – October 2014 Submit Documentation Feedback Circuit Description www.ti.com 1 Circuit Description This USB 3.0 hub design is a four-port USB 3.0 compliant hub. The design provides simultaneous SuperSpeed and high-speed/full-speed connections on the upstream port, and SuperSpeed, high-speed, full- speed, or low-speed connections on the downstream ports. The hub design provides power control for each downstream port and overcurrent protection. 2 Theory of Operation A block diagram of the design in Figure 1 shows a USB 3.0 hub with the Micro-B upstream port and 4 USB 3.0 TypeA downstream ports. Power for the design is shown as ESD protection elements on the upstream and downstream sides of the hub. A unique power control circuit is shown, enabling the DC power to be applied after USB power up without interruption of communication. Downstream port current limiting is provided by either a TPS2003C (dual channel, current-limited power distribution switch) on ports 1 and 2, or by one of two TPS2546 (USB charging port controller and power switch) on ports 3 and 4. Figure 1. TUSB8041 Functional Block Diagram TIDU614 – October 2014 Submit Documentation Feedback TIDA-00288 4-Port USB 3.0 Hub Reference Design Copyright © 2014, Texas Instruments Incorporated 3 Theory of Operation 2.1 www.ti.com TUSB8041 The TUSB8041 is a four port USB 3.0 compliant hub chip. It provides simultaneous SuperSpeed and high/full speed connections on both the upstream and downstream ports. When the upstream port is connected to a computer that supports only highspeed or full speed connections, the downstream ports disable their SuperSpeed support and the SuperSpeed devices connect at high speed or full speed. The hub supports either ganged or per-port power switching, over-current protection, and battery charging. The USB 3.0 hub is configured at the de-assertion of RESET. Refer to Table 1 for the default values. Table 1. TUSB8041 Power-on Reset Settings 2.2 Downstream port power management Enabled Power control Signals are active high Power port control Ports are individually controlled Hub-controlled battery charging Enabled on ports 1 and 2 System Power The main power on the board is 5 V. Figure 2 shows the block diagram for the 5 V switching circuit. The 5 V originates from either the upstream USB port, or from an external DC power cube. Power is switched between the two sources by a TPS22910A (low ON resistance load switch). The TPS22910A is rated at 2 Amps and used to switch the upstream voltage in or out of the circuit. When the power cube is plugged into the board, the load switch isolates the upstream voltage from the board 5 V. The DC power cube is rated at 5 V / 5 Amps and is connected to the board through a 2.5 mm center positive DC power jack. Figure 2. 5 V Power Switching 4 TIDA-00288 4-Port USB 3.0 Hub Reference Design Copyright © 2014, Texas Instruments Incorporated TIDU614 – October 2014 Submit Documentation Feedback Theory of Operation www.ti.com 2.3 Downstream USB Power Delivery Power delivery for ports 1 and 2 is controlled from the TPS2003C (dual channel current limited switch). Power enable for these ports comes from the USB hub. Rated current for the part is 2 Amps of total current, and is controlled by operating in a constant current mode when the output exceeds the currentlimit threshold. Downstream battery charging is enabled by the pull-up resistors on EN_PORT1 and EN_PORT2. The TUSB8041 provides the signatures on the D+/D- (USB 2.0) lines to support different charging schemes. Figure 3. Ports 1 and 2 Power Delivery Depending on the state of the upstream connection, the downstream ports will either be in CDP mode or Auto mode. When the upstream port is connected, ports 1 and 2 are in CDP mode. With the upstream port disconnected, ports 1 and 2 are in TUSB8041 Auto mode. The TUSB8041 supports three of the most common USB charging schemes found in popular hand-held media and cellular devices: • USB Battery Charging Specification BC1.2 • Chinese Telecommunications Industry Standard YD/T 1591-2009 • Divider Mode BC1.2 lists three different port types as listed below: • Standard Downstream Port (SDP) – data only • Charging Downstream Port (CDP) – charging and data • Dedicated Charging Port (DCP) – charging only BC1.2 defines a charging port as a downstream-facing USB port that provides power for charging portable equipment, thus under this definition CDP and DCP are defined as charging ports. Table 2 shows the differences between these ports. Table 2. Operating Modes Port Type Supports USB 2.0 Communication Max Allowable Current SDP (USB2.0) Yes 0.5 Amps SDP (USB3.0) Yes 0.9 Amps CDP Yes 1.5 Amps DCP No 1.5 Amps TIDU614 – October 2014 Submit Documentation Feedback TIDA-00288 4-Port USB 3.0 Hub Reference Design Copyright © 2014, Texas Instruments Incorporated 5 Theory of Operation www.ti.com Power delivery for ports 3 and 4 is controlled by TPS2546 (USB charging port controller and power switch). The TPS2546 provides the signatures on the D+/D- (USB 2.0) lines to support different charging schemes. Figure 4. Ports 3 and 4 Power Delivery Depending on the state of the upstream connection, the downstream ports are either in CDP mode or DCP Auto mode. When the upstream port is connected, ports 3 and 4 are in CDP mode. With the upstream port disconnected, ports 3 and 4 are in DCP Auto mode. The TPS2546 supports four of the most common USB charging schemes found in popular hand-held media and cellular devices: • USB Battery Charging Specification BC1.2 • Chinese Telecommunications Industry Standard YD/T 1591-2009 • Divider Mode • 1.2 V Mode BC1.2 lists three different port types as listed below: • Standard Downstream Port (SDP) • Charging Downstream Port (CDP) • Dedicated Charging Port (DCP) BC1.2 defines a charging port as a downstream-facing USB port that provides power for charging portable equipment. Under this definition, CDP and DCP are defined as charging ports. Table 3 shows the differences between these ports. Table 3. Operating Modes 6 Port Type Supports USB 2.0 Communication Max Allowable Current SDP (USB2.0) Yes 0.5 Amps SDP (USB3.0) Yes 0.9 Amps CDP Yes 1.5 Amps DCP No 1.5 Amps TIDA-00288 4-Port USB 3.0 Hub Reference Design Copyright © 2014, Texas Instruments Incorporated TIDU614 – October 2014 Submit Documentation Feedback Component Selection www.ti.com 3 Component Selection All components contained in this design are chosen to provide a low-cost solution when purchased in large quantities, while minimizing component count and maintaining performance to satisfy the design criteria. 3.1 Hub Selection The TUSB8041 was chosen as a low cost 4 port USB 3.0 hub. It supports USB 3.0 and USB 2.0 for both upstream and downstream ports. Battery charging is supported as is per-port or ganged power switching. An OTP ROM is included for custom, third-party VID/PID and device configuration. There are no special drivers required for this hub. 3.2 Downstream Power Switches There are two different current-limited power distribution switches used to control the downstream VBUS power. Ports 1 and 2 are controlled by the TPS2003C part capable of switching 2 Amps of total current. The output enable is active high. Ports 3 and 4 are controlled by separate TPS2546, single port, USB charging port controllers. The controller is set to switch 1.5 Amps of current (set by resistor R34 for port 3 and R20 on port 4). Two modes of operation are supported, CDP and DCP Auto modes. CDP mode, Charging Downstream port, is a standard USB 3.0 port that can supply 1.5 Amps of current. In DCP mode, Dedicated Charging port, there is no USB data communication, but the port can supply up to 1.5 Amps charging current. 3.3 ESD Components ESD protection for all USB ports is supplied by the TPD6E05U06 device. This part provides ESD protection for three differential pairs at data speeds of up to 6 GBps, and has low capacitance of 0.5 pF. Each USB port uses one of these parts to protect the port. The package allows for 'straight through' routing and is placed as close to the USB connector as possible. 3.4 4-Port Power The main power for the board is +5 V. This can be supplied from either the upstream USB port or from an external power cube. The DC power cube is rated at 5 V / 5 Amps, and is connected to the board through a 2.5 mm center-positive DC power jack (J6). Board_5V is switched by a TPS22910 (low ON resistance load switch – U11). The switch has an ON pin that is active low. See Figure 5 for the power sub-system block diagram. When the power cube is plugged into the board, the JACK_INSERT line turns the TPS22910 (low ON resistance load switch) to the off position, allowing the BOARD_5V to be isolated from VBUS_IN. When no power cube is plugged into the power jack, the JACK_INSERT signal turns the TPS22910 to the on position and connects VBUS_IN to the BOARD_5V. The voltages for the TUSB8041 hub are generated from two different LMR10510 step-down voltage regulators. As shown in Figure 5, U9 takes the BOARD_5V and regulates it down to 3.3 V. The circuit was designed using TI’s Webench Design Tool, and selected for the small PCB footprint and low component cost. U10 generates the 1.1 V power rail used for the TUSB8041 core voltage from the 3.3 V power rail. 3.5 External Power Cube Due to upstream power constraints, an external power adapter may be required. An upstream USB 3.0 port can supply 5 V at 900 mAmps, or 4.5 Watts of power. The TUSB8041 consumes about 1 Watt of power. If any of the four downstream USB ports require more than 3.5 Watts of power, an external power cube will be required. The 4 port hub is designed to accept a 5 V, 5 Amps, center positive, 2.5 mm AC/DC adapter. The following are two sources of approved power cubes: • SL Power #CENB1040A0503F01 • CUI Inc #ETMA050400UD TIDU614 – October 2014 Submit Documentation Feedback TIDA-00288 4-Port USB 3.0 Hub Reference Design Copyright © 2014, Texas Instruments Incorporated 7 Component Selection www.ti.com Figure 5. Power Sub-System Block Diagram 8 TIDA-00288 4-Port USB 3.0 Hub Reference Design Copyright © 2014, Texas Instruments Incorporated TIDU614 – October 2014 Submit Documentation Feedback PCB Design www.ti.com 4 PCB Design The PCB stack-up design was chosen to accommodate the 90 ohm impedance of USB 3.0 signal traces. A trace width of 4.4 mils and differential pair spacing of 5 mils is used with this layout. All USB 3.0 traces are routed on the top side of the board, and references a solid ground plane on layer 2. Layer 3 is the power layer and includes 5 V, 3.3 V and 1.1 V supplies. The bottom side, layer 4, is used for all other routes. 4.1 PCB Layout Figure 6. Top Layer – USB3.0 Routes TIDU614 – October 2014 Submit Documentation Feedback TIDA-00288 4-Port USB 3.0 Hub Reference Design Copyright © 2014, Texas Instruments Incorporated 9 PCB Design www.ti.com Figure 7. Layer 2 – Ground Plane Figure 8. Layer 3 – Power Plane 10 TIDA-00288 4-Port USB 3.0 Hub Reference Design Copyright © 2014, Texas Instruments Incorporated TIDU614 – October 2014 Submit Documentation Feedback PCB Design www.ti.com Figure 9. Bottom Side - Routing Figure 10. Top Side Silkscreen TIDU614 – October 2014 Submit Documentation Feedback TIDA-00288 4-Port USB 3.0 Hub Reference Design Copyright © 2014, Texas Instruments Incorporated 11 PCB Design www.ti.com Figure 11. Bottom Side Silkscreen 4.2 Layout Guidelines All USB 3.0 and 2.0 lines must be routed as controlled impedance, high speed differential pairs. Minimize the use of vias and 90 degree corners in the routing of the high speed lines. Assure the high speed lines reference a solid ground plane, and the plane is void of cuts and splits to prevent impedance discontinuities. 4.3 PCB Stack-up Figure 12 shows the PCB stack-up used for the TIDA-00288 reference design. Figure 12. PCB Stack-up 12 TIDA-00288 4-Port USB 3.0 Hub Reference Design Copyright © 2014, Texas Instruments Incorporated TIDU614 – October 2014 Submit Documentation Feedback Verification and Measured Performance www.ti.com 5 Verification and Measured Performance 5.1 Compliance Testing 5.1.1 USB 2.0 – Downstream Port 1 5.1.2 USB 2.0 – Downstream Port 2 TIDU614 – October 2014 Submit Documentation Feedback TIDA-00288 4-Port USB 3.0 Hub Reference Design Copyright © 2014, Texas Instruments Incorporated 13 Verification and Measured Performance www.ti.com 5.1.3 USB 2.0 – Downstream Port 3 5.1.4 USB 2.0 – Downstream Port 4 14 TIDA-00288 4-Port USB 3.0 Hub Reference Design Copyright © 2014, Texas Instruments Incorporated TIDU614 – October 2014 Submit Documentation Feedback Verification and Measured Performance www.ti.com 5.1.5 USB 3.0 – Downstream Port 1 TIDU614 – October 2014 Submit Documentation Feedback TIDA-00288 4-Port USB 3.0 Hub Reference Design Copyright © 2014, Texas Instruments Incorporated 15 Verification and Measured Performance 5.1.6 16 www.ti.com USB 3.0 – Downstream Port 2 TIDA-00288 4-Port USB 3.0 Hub Reference Design Copyright © 2014, Texas Instruments Incorporated TIDU614 – October 2014 Submit Documentation Feedback Verification and Measured Performance www.ti.com 5.1.7 USB 3.0 – Downstream Port 3 TIDU614 – October 2014 Submit Documentation Feedback TIDA-00288 4-Port USB 3.0 Hub Reference Design Copyright © 2014, Texas Instruments Incorporated 17 Verification and Measured Performance 5.1.8 18 www.ti.com USB 3.0 – Downstream Port 4 TIDA-00288 4-Port USB 3.0 Hub Reference Design Copyright © 2014, Texas Instruments Incorporated TIDU614 – October 2014 Submit Documentation Feedback Design Options www.ti.com 6 Design Options This section discusses different design options evaluated for this project that give the designer flexibility to modify the design. 6.1 ESD Protection The TPD6E05U06 part was chosen to provide ESD protection on this design, due to it’s small size, capability to provide protection of up to three differential pairs, and low capacitance. The package allows for 'flow through' routing. Another option is to use three single package parts for each USB connector (TPD2EUSB30). This allows for more flexibility in board routing. 6.2 TUSB8041 Options The TUSB8041 has an interface for an optional I2C EEPROM or SMBUS host. This can store vendor information and other start-up parameters. An I2C EEPROM, such as the AT24C04 or a SMBUS host, can be connected to the serial interface for this purpose, but is not a design requirement. In this design, a 24 Mhz fundamental frequency crystal was used to generate the clock (CTS Frequency Controls #445C25D24M00000). Optionally, a 24 Mhz oscillator can be used and connected to XI pin (pin 62). Table 4 lists the options for the TUSB8041 that are set at the rising edge of the Grst# pin (pin 50). Table 4. Power-on Reset Options 6.3 Signal Name (pin #) Default PWRCTL/BATEN 1-4 (pins 36, 35, 33 and 32) Pull-Down SMBUSz/SS_SUSPEND (pin 39) Pull-Up FULLPWRMGMT/SMBA1/SS_UP (pin 40) Pull-Down PWRCTL_POL (pin 41) Pull-Up GANGED/SMBA2/HS_UP (pin 42) Pull-Down AUTOENZ/HS_SUSPEND (pin 45) Pull-Up Condition 0 = Battery charging not supported 1 = Battery charging supported 0 = SMBbus enabled 1 = I2C enabled 0 = Downstream power switching supported 1 = Downstream power switch not supported 0 = PWRCTL polarity is active low 1 = PWRCTL polarity is active high 0 = Individual port power control supported 1 = Ganged power control supported 0 = Auto mode is enabled on all ports enabled for battery charging. 1 = Auto mode is disabled Power Delivery Options There are several options for providing power to downstream USB ports. For ports 1 and 2, the TPS2003C was used to reduce component count. Even in this family there are other options that would be viable solutions, with rated currents from 0.5 to 2 Amps. On ports 3 and 4, the TPS2546 was used to control USB charging. This part provides more capabilities than the TPS2003C, and can supply up to 3 Amps current. 6.4 Power Options The TUSB8041 requires 1.1 V for core logic, and 3.3 V for I/O logic. The current requirements are in the datasheet, and Texas Instruments has many power solutions. The Simple Switcher design was chosen for low component count and low cost. By using two of the same part, cost was kept to a minimum. Visit TI’s Webench Designer for other power options. The load switch used for isolating VBUS_IN and Board_5V is another option. The upstream port can only supply 900 mAmps, which may not be enough to power the logic on the board and 1 or 2 downstream ports. Adding an external power cube overcomes the limited current from the upstream connector. TIDU614 – October 2014 Submit Documentation Feedback TIDA-00288 4-Port USB 3.0 Hub Reference Design Copyright © 2014, Texas Instruments Incorporated 19 Schematics 7 www.ti.com Schematics 5 4 3 2 1 TUSB8041 BLOCK DIAGRAM Page 7 D 5V D VBUS_OUT_1 TPS2003C VBUS_OUT_2 Page 5 VBUS_OUT_1 Page 3 & 4 PORT 1 DOWNSTREAM PORT 1 DOWNSTREAM PORT 2 Page 2 Page 5 VBUS_OUT_2 USB3.0 UPSTREAM USB PORT TUSB8041 VBUS_IN C C PORT 2 DOWNSTREAM PORT 3 Page 7 5V VBUS_OUT_3 DOWNSTREAM PORT 4 TPS2546 Page 6 VBUS_OUT_3 PORT 3 Page 8 Page 8 5V_IN B B FET SWITCH AND REGULATORS DC JACK VBUS_IN Page 7 Page 6 VBUS_OUT_4 5V VBUS_OUT_4 TPS2546 PORT 4 Krypton Systems Krypton Systems 3060 Summit Ave Plano, Texas 75074 (972) 424‐3880 A A Drawing Title BLOCK DIAGRAM Size B Engineer MPH Page Name 5 4 3 2 Rev TUSB8041_REF Date: Thursday, October 23, 2014 B Sheet 1 of 8 1 Figure 13. Schematic 1 20 TIDA-00288 4-Port USB 3.0 Hub Reference Design Copyright © 2014, Texas Instruments Incorporated TIDU614 – October 2014 Submit Documentation Feedback Schematics www.ti.com 5 4 3 2 1 USB3.0 MICRO-B UPSTREAM CONNECTOR THESE CONNECTIONS ARE FOR FLOW THROUGH ROUTING D D 1 2 3 4 6 7 KEEP ESD CLOSE TO CONNECTOR GND5 GND10 UQFN_14_142X57_20 5 10 9 8 D3+ D3- NC1 NC2 NC3 NC4 NC6 NC7 D2+ D2- D1+ D1- [P3,7,8] 14 13 VBUS_IN 220 @ 100MHZ, 2A C1 0603 0.1uF 0402 12 11 FB1 USB 3.0 MICRO B CONNECTOR U1 TPD6E05U06 USB2 1 2 3 4 5 USB3 J1 6 7 8 9 10 VBUS DD+ USB_OTG GND 11 12 C SLD1 SLD2 TXTX+ GND1 RXRX+ DM_UP [P3] VBUS_PUP_FB DP_UP 0201RND C2 0.1uF SSTXM_PUP SSTXP_PUP C3 SSTXP_UP [P3] 0.1uF 0201RND USB3_MICRO_B CON_SMRT_10_USB3_ZX360D-B [P3] SSTXM_UP [P3] C INTENTIONALLY SWAPPED POLARITY KEEP CAPS CLOSE TO CONNECTOR INTENTIONALLY SWAPPED POLARITY SSRXP_UP [P3] SSRXM_UP [P3] 1 MICRO B RECEPTACLE 5 6 1 USB 2 0 ROUTE THESE LINES ON THE TOP SIDE ONLY USB 3 B B Krypton Systems Krypton Systems 3060 Summit Ave Plano, Texas 75074 (972) 424‐3880 A A Drawing Title USB 3.0 MICRO‐B CONNECTOR Size B Engineer MPH Page Name 5 4 3 2 Rev TUSB8041_REF Date: Thursday, October 23, 2014 B Sheet 2 of 8 1 Figure 14. Schematic 2 TIDU614 – October 2014 Submit Documentation Feedback TIDA-00288 4-Port USB 3.0 Hub Reference Design Copyright © 2014, Texas Instruments Incorporated 21 Schematics www.ti.com 5 4 3 2 1 TUSB 4 PORT USB3.0 HUB XTAL_2_SM_197X126 Y1 BOARD_3P3V 24MHz D C4 18pF 0402 C5 18pF 0402 R3 C6 1uF 0402 UPSTREAM PORT [P2,7,8] HIGH=I2C ENABLED LOW=PWR MANAGEMENT ENABLED U2-1 62 61 50 55 56 58 59 53 54 64 48 R5 DNI 0402 I2C_ENABLE PWRMGMT_EN# PWRCTL_POL GANGED AUTO_EN DEFINATION PWRMGMT_EN# PWRCTL_POL DNI,1M 0402 R4 DNI 0402 VBUS_IN I2C_ENABLE R33 DNI 0402 XI XO GRST# SSTXP_UP [P2] SSTXP_UP SSTXM_UP [P2] SSTXM_UP SSRXP_UP [P2] SSRXP_UP SSRXM_UP [P2] SSRXM_UP DP_UP [P2] DP_UP DM_UP [P2] DM_UP USB_R1 USB_VBUS_UP BOARD_3P3V C SIGNAL D R1 DNI 0402 I2C_SCL I2C_SDA 38 37 39 40 41 42 45 49 XI XO GRST# USB_SSTXP_UP USB_SSTXM_UP USB_SSRXP_UP USB_SSRXM_UP USB_DP_UP USB_DM_UP USB_R1 USB_VBUS SCL/SMBCLK SDA/SMBDAT SMBUSz/SS_SUPD FPMGT/SMBA1/SS_UP PWRCTL_POL GANGED/SMBA2/HS_UP AUTOEN/HS_SUSPD TEST HIGH=ACTIVE HIGH POLARITY GANGED LOW=INDIVIDUAL PORT CONTROL AUTO_EN LOW=AUTO MODE ENABLED R6 90.9K 0402 R7 9.1K 0402 R8 10K 0402 R9 10k 0402 R10 10k 0402 USB_SSTXP_DN1 USB_SSTXM_DN1 USB_SSRXP_DN1 USB_SSRXM_DN1 USB_DP_DN1 USB_DM_DN1 PWRCTL1/BATEN1 OVERCURZ1 USB_SSTXP_DN2 USB_SSTXM_DN2 USB_SSRXP_DN2 USB_SSRXM_DN2 USB_DP_DN2 USB_DM_DN2 PWRCTL2/BATEN2 OVERCURZ2 USB_SSTXP_DN3 USB_SSTXM_DN3 USB_SSRXP_DN3 USB_SSRXM_DN3 USB_DP_DN3 USB_DM_DN3 PWRCTL3/BATEN3 OVERCURZ3 USB_SSTXP_DN4 USB_SSTXM_DN4 USB_SSRXP_DN4 USB_SSRXM_DN4 USB_DP_DN4 USB_DM_DN4 PWRCTL4/BATEN4 OVERCURZ4 R11 10k 0402 TUSB8041 B 3 4 6 7 1 2 36 46 SSTXP_DN1 SSTXM_DN1 SSRXP_DN1 SSRXM_DN1 DP_DN1 DM_DN1 EN_PORT1 FLT_PORT1# SSTXP_DN1 [P5] SSTXM_DN1 [P5] SSRXP_DN1 [P5] SSRXM_DN1 [P5] DP_DN1 [P5] DM_DN1 [P5] EN_PORT1 [P7] FLT_PORT1# [P7] 11 12 14 15 9 10 35 47 SSTXP_DN2 SSTXM_DN2 SSRXP_DN2 SSRXM_DN2 DP_DN2 DM_DN2 EN_PORT2 FLT_PORT2# SSTXP_DN2 [P5] SSTXM_DN2 [P5] SSRXP_DN2 [P5] SSRXM_DN2 [P5] DP_DN2 [P5] DM_DN2 [P5] EN_PORT2 [P7] FLT_PORT2# [P7] 19 20 22 23 17 18 33 44 SSTXP_DN3 SSTXM_DN3 SSRXP_DN3 SSRXM_DN3 DP_DN3 DM_DN3 EN_PORT3 FLT_PORT3# SSTXP_DN3 [P6] SSTXM_DN3 [P6] SSRXP_DN3 [P6] SSRXM_DN3 [P6] DP_DN3 [P7] DM_DN3 [P7] EN_PORT3 FLT_PORT3# [P7] 26 27 29 30 24 25 32 43 SSTXP_DN4 SSTXM_DN4 SSRXP_DN4 SSRXM_DN4 DP_DN4 DM_DN4 EN_PORT4 FLT_PORT4# SSTXP_DN4 [P6] SSTXM_DN4 [P6] SSRXP_DN4 [P6] SSRXM_DN4 [P6] DP_DN4 [P7] DM_DN4 [P7] EN_PORT4 FLT_PORT4# [P7] C DOWNSTREAM PORTS QFN_64_354SQ_20 B Krypton Systems Krypton Systems 3060 Summit Ave Plano, Texas 75074 (972) 424‐3880 A A Drawing Title TUSB8041 ‐ PAGE 1 Size B Engineer MPH Page Name 5 4 3 2 Rev TUSB8041_REF Date: Thursday, October 23, 2014 B Sheet 3 of 8 1 Figure 15. Schematic 3 22 TIDA-00288 4-Port USB 3.0 Hub Reference Design Copyright © 2014, Texas Instruments Incorporated TIDU614 – October 2014 Submit Documentation Feedback Schematics www.ti.com 5 4 3 2 1 TUSB 4 PORT HUB POWER D D BOARD_1P1V BOARD_3P3V BOARD_1P1V U2-2 5 8 13 21 28 31 51 57 60 VDD1 VDD2 VDD3 VDD4 VDD5 VDD6 VDD7 VDD8 NC 63 52 34 16 VDD33_4 VDD33_3 VDD33_2 VDD33_1 C7 .01uF 0402 C8 .01uF 0402 C9 0.1uF 0402 C10 0.1uF 0402 C11 0.1uF 0402 C12 .01uF 0402 C13 .01uF 0402 C14 10uF 0402 65 PAD BOARD_3P3V TUSB8041 QFN_64_354SQ_20 C C15 .01uF 0402 C16 .01uF 0402 C17 0.1uF 0402 C18 0.1uF 0402 C C19 10uF 0402 B B Krypton Systems Krypton Systems 3060 Summit Ave Plano, Texas 75074 (972) 424‐3880 A A Drawing Title TUSB POWER FOR HUB Size B Engineer MPH Page Name 5 4 3 2 Rev TUSB8041_REF Date: Thursday, October 23, 2014 B Sheet 4 of 8 1 Figure 16. Schematic 4 TIDU614 – October 2014 Submit Documentation Feedback TIDA-00288 4-Port USB 3.0 Hub Reference Design Copyright © 2014, Texas Instruments Incorporated 23 Schematics www.ti.com 5 4 3 2 1 DOWNSTREAM USB PORTS 1&2 1 2 3 4 6 7 THESE CONNECTIONS ARE FOR FLOW THROUGH ROUTING D3+ D3- KEEP ESD CLOSE TO CONNECTOR 9 8 DM_DN1 [P3] DP_DN1 [P3] J2 VBUS DM DP GND SSRXN SSRXP GND SSTXN SSTXP SHIELD0 SHIELD1 1 2 3 4 5 6 7 8 9 10 11 D UQFN_14_142X57_20 5 10 D2+ D2- D1+ D114 13 PORT 1 SINGLE USB 3.0 CONNECTOR 220 @ 100MHZ,2A 0603 12 11 VBUS_OUT_PORT_1 [P7] C20 0.1uF 0402 GND5 GND10 NC1 NC2 NC3 NC4 NC6 NC7 U3 TPD6E05U06 FB2 D VBUS_P1_FB R45 62K 0402 SSRXM_DN1 SSRXP_DN1 R46 62K 0402 HUB_SSTXM_P1 SSRXM_DN1 [P3] HUB_SSTXP_P1 SSRXP_DN1 [P3] USB3_TYPEA_CONNECTOR USB3_TYPEA C C KEEP CAPS CLOSE TO CONNECTOR 0201RND C21 0.1uF C22 SSTXM_DN1 [P3] 0.1uF SSTXP_DN1 [P3] 1 2 3 4 6 7 0201RND U4 TPD6E05U06 D3+ D39 8 D2+ D2- KEEP ESD CLOSE TO CONNECTOR DM_DN2 [P3] DP_DN2 [P3] J3 1 2 3 4 5 6 7 8 9 10 11 VBUS DM DP GND SSRXN SSRXP GND SSTXN SSTXP SHIELD0 SHIELD1 B UQFN_14_142X57_20 5 10 14 13 220 @ 100MHZ,2A C23 0603 0.1uF 0402 PORT 2 SINGLE USB 3.0 CONNECTOR 12 11 VBUS_OUT_PORT_2 [P7] D1+ D1- FB3 GND5 GND10 NC1 NC2 NC3 NC4 NC6 NC7 B VBUS_P2_FB R47 62K 0402 SSRXM_DN2 SSRXP_DN2 R48 62K 0402 HUB_SSTXM_P2 SSRXM_DN2 [P3] HUB_SSTXP_P2 SSRXP_DN2 [P3] Krypton Systems Krypton Systems 3060 Summit Ave Plano, Texas 75074 (972) 424‐3880 USB3_TYPEA_CONNECTOR USB3_TYPEA A KEEP CAPS CLOSE TO CONNECTOR 0201RND C24 0.1uF C25 Drawing Title SSTXM_DN2 [P3] 0.1uF USB DOWNSTREAM PORTS 1 & 2 SSTXP_DN2 [P3] Size 0201RND B Engineer MPH Page Name 4 3 2 Rev TUSB8041_REF Date: Thursday, October 23, 2014 5 A B Sheet 5 of 8 1 Figure 17. Schematic 5 24 TIDA-00288 4-Port USB 3.0 Hub Reference Design Copyright © 2014, Texas Instruments Incorporated TIDU614 – October 2014 Submit Documentation Feedback Schematics www.ti.com 5 4 3 2 1 DOWNSTREAM USB PORTS 3&4 1 2 3 4 6 7 THESE CONNECTIONS ARE FOR FLOW THROUGH ROUTING U5 TPD6E05U06 UQFN_14_142X57_20 D KEEP ESD CLOSE TO CONNECTOR 9 8 5 10 D3+ D3- D2+ D212 11 220 @ 100MHZ,2A C26 0603 0.1uF 0402 14 13 PORT 3 SINGLE USB 3.0 CONNECTOR D1+ D1- VBUS_OUT_PORT_3 [P7] GND5 GND10 NC1 NC2 NC3 NC4 NC6 NC7 FB4 D J4 VBUS DM DP GND SSRXN SSRXP GND SSTXN SSTXP SHIELD0 SHIELD1 1 2 3 4 5 6 7 8 9 10 11 DM_OUT3 [P7] VBUS_P3_FB DP_OUT3 [P7] SSRXM_DN3 SSRXP_DN3 HUB_SSTXM_P3 SSRXM_DN3 [P3] HUB_SSTXP_P3 SSRXP_DN3 [P3] USB3_TYPEA_CONNECTOR USB3_TYPEA KEEP CAPS CLOSE TO CONNECTOR C C27 0201RND 0.1uF C28 C SSTXM_DN3 [P3] 0.1uF SSTXP_DN3 [P3] 1 2 3 4 6 7 0201RND B D3+ D3- D2+ D2- D1+ D1- UQFN_14_142X57_20 KEEP ESD CLOSE TO CONNECTOR 5 10 9 8 220 @ 100MHZ,2A 0603 14 13 PORT 4 SINGLE USB 3.0 CONNECTOR C29 0.1uF 0402 12 11 VBUS_OUT_PORT_4 [P7] GND5 GND10 NC1 NC2 NC3 NC4 NC6 NC7 U6 TPD6E05U06 FB5 B J5 1 2 3 4 5 6 7 8 9 10 11 VBUS DM DP GND SSRXN SSRXP GND SSTXN SSTXP SHIELD0 SHIELD1 DM_OUT4 [P7] VBUS_P4_FB DP_OUT4 [P7] SSRXM_DN4 SSRXP_DN4 HUB_SSTXM_P4 SSRXM_DN4 [P3] HUB_SSTXP_P4 SSRXP_DN4 [P3] USB3_TYPEA_CONNECTOR USB3_TYPEA Krypton Systems Krypton Systems 3060 Summit Ave Plano, Texas 75074 (972) 424‐3880 KEEP CAPS CLOSE TO CONNECTOR 0201RND C30 0.1uF SSTXM_DN4 [P3] A C31 0.1uF SSTXP_DN4 [P3] A 0201RND Drawing Title USB DOWNSTREAM PORTS 3 & 4 Size B Engineer MPH Page Name 5 4 3 2 Rev TUSB8041_REF Date: Thursday, October 23, 2014 B Sheet 6 of 8 1 Figure 18. Schematic 6 TIDU614 – October 2014 Submit Documentation Feedback TIDA-00288 4-Port USB 3.0 Hub Reference Design Copyright © 2014, Texas Instruments Incorporated 25 Schematics www.ti.com 5 4 3 2 1 USB POWER DELIVERY BOARD_3P3V BOARD_5V BOARD_5V C32 0.1uF 0402 D C33 4.7uF 0402 C34 0.1uF 0402 U7 2 3 [P3] [P3] 4 5 EN_PORT1 EN_PORT2 EN_PORT1 EN_PORT2 ACTIVE HIGH ENABLE: 8041 HAS INTERNAL PULL-DOWNS THESE RESISTORS ENABLE BATTERY CHARGING ON PORTS 1 AND 2 1 BOARD_3P3V R14 4.7K 0402 R12 10K 0402 PORTS 1 & 2 R15 4.7K 0402 IN1 IN2 OUT1 OUT2 EN1 EN2 FLT1# FLT2# NC PAD GND R29 DNI 0402 R13 10K 0402 D 9 8 10 6 7 11 R30 DNI 0402 VBUS_OUT_PORT_1 VBUS_OUT_PORT_2 FLT_PORT1# FLT_PORT2# FLT_PORT1# [P3] FLT_PORT2# [P3] C35 22uF 0603 VBUS_OUT_PORT_1 [P5] VBUS_OUT_PORT_2 [P5] C36 22uF 0603 TPS2003C DRC_S_PDSO_N10 FIXED CURRENT LIMIT OUTPUT OF 2A BOARD_5V BOARD_3P3V BOARD_5V BOARD_5V BOARD_5V U12 1 [P2,3,7,8] C39 0.1uF 0402 R36 10K 0402 R19 10K 0402 VBUS_IN [P6] [P6] 10 11 DP_OUT3 DM_OUT3 5 4 2546_EN_PORT3 R42 10K 0402 6 7 8 PORT3_CTL2_CTL3 R37 10K 0402 R16 10K 0402 C C38 4.7uF 0402 BOARD_5V PORT 3 VIN VOUT FAULT# DP_IN DM_IN DP_OUT DM_OUT EN ILIM_SEL CLT1 CLT2 CLT3 ILIM_HI ILIM_LO STATUS# GND PAD 12 13 VBUS_OUT_PORT_3 FLT_PORT3# 3 2 C R31 DNI 0402 FLT_PORT3# [P3] DP_DN3 [P3] DM_DN3 [P3] 16 15 9 14 17 VBUS_OUT_PORT_3 [P6] C40 10uF 0402 PORT3_STATUS# PORTS 3 AND 4 PORT3_CTL1_ILIM_SEL R38 DNI 0402 TPS2546 QFN_16_124X124_20 R43 47K 0402 BOARD_5V R34 33.6K 0402 ILIM_HIGH = 1.5A BOARD_3P3V B C53 0.1uF BOARD_5V 0402 R35 10K 0402 PORT 4 BOARD_5V BOARD_5V R39 10K 0402 R32 DNI 0402 U13 R18 10K 0402 1 [P6] [P6] 10 11 DP_OUT4 DM_OUT4 5 4 2546_EN_PORT4 [P2,3,7,8] BOARD_5V R17 10K 0402 VBUS_IN R44 10K 0402 PORT4_CTL2_CTL3 6 7 8 VIN VOUT FAULT# DP_IN DM_IN DP_OUT DM_OUT EN ILIM_SEL CLT1 CLT2 CLT3 ILIM_HI ILIM_LO STATUS# GND PAD TPS2546 PORT4_CTL1_ILIM_SEL 12 13 DCP_AUTO MODE (1.5A) B FLT_PORT4# [P3] DP_DN4 [P3] DM_DN4 [P3] 16 15 9 14 17 C41 10uF 0402 PORT4_STATUS# Krypton Systems R40 DNI 0402 QFN_16_124X124_20 R20 33.6K 0402 Krypton Systems 3060 Summit Ave Plano, Texas 75074 (972) 424‐3880 ILIM_HIGH = 1.5A R41 47K 0402 A CDP MODE (1.5A) UP-STREAM DISCONNECTED (CTL2/CTL3=1,CTL1/ILIM_SEL=0) VBUS_OUT_PORT_4 [P6] VBUS_OUT_PORT_4 FLT_PORT4# 3 2 UP-STREAM CONNECTED (CTL1/CTL2/CTL3/ILIM_SEL=1) A Drawing Title VBUS FOR USB PORTS Size B Engineer MPH Page Name 5 4 3 2 Rev TUSB8041_REF Date: Thursday, October 23, 2014 B Sheet 7 of 8 1 Figure 19. Schematic 7 26 TIDA-00288 4-Port USB 3.0 Hub Reference Design Copyright © 2014, Texas Instruments Incorporated TIDU614 – October 2014 Submit Documentation Feedback Schematics www.ti.com 5 4 BOARD_5V BOARD_5V R21 10K 0402 L1 U9 5 C43 22uF 0603 C44 0.1uF 0402 4 VIN 1 SW FB 3.3V @450mA R22 45.3K 0402 EN 2 GND BOARD_1P1V C L2 U10 5 C48 22uF 0603 D C46 2.2uF 0402 R23 10K 0402 BOARD_3P3V R24 10K 0402 C47 2.2uF 0402 C45 22uF 0603 D1 MBR0520LT1G SOD123F SOT_23_5 C 1 6.8uH@700mA 1210 3 LMR10510X BOARD_3P3V 2 BOARD_3P3V D C42 2.2uF 0402 3 C49 0.1uF 0402 4 VIN 1 SW 1.1V @ 800mA [email protected] IND_1008 3 FB R25 8.25K 0402 EN 2 GND C50 22uF 0603 D2 B130-13-F SMA LMR10510X C51 2.2uF 0402 R26 10K 0402 SOT_23_5 BOARD_5V LED BOARD_5V B MID-MOUNT POWER CONNECTOR [P2,3,7] BOARD_5V VBUS_IN BOARD_5V R27 290 0402 C52 10uF 0402 BOARD_5V R28 10K 0402 J6 VBUS_IN A2 B2 1 3 B U11 VIN VOUT ON GND A1 D4 LED Green 0603 B1 TPS22910 JACK_INSERT Vf=2.1V@20mA BGA_4_36SQ_20 2 GND IS THE ON STATE 5 4 DC_POWER_JACK JACK_PJ-068 JACK_INSERT A CUI INC #PJ-068B-SMT 2.5MM (5A RATED) Krypton Systems CONDITION GND NO POWER CUBE BOARD_5V = VBUS_IN 5V POWER CUBE BOARD_5V COMES FROM POWER CUBE VBUS IS DISCONNECTED FROM BOARD_5V Krypton Systems 3060 Summit Ave Plano, Texas 75074 (972) 424‐3880 A Drawing Title FOR REV B BOARD POWER Size POWER CUBE (SL POWER) CENB1040A0503F01 - 2.5MM CENTER POSITIVE B Engineer MPH Page Name 5 4 3 2 Rev TUSB8041_REF Date: Thursday, October 23, 2014 B Sheet 8 of 8 1 Figure 20. Schematic 8 TIDU614 – October 2014 Submit Documentation Feedback TIDA-00288 4-Port USB 3.0 Hub Reference Design Copyright © 2014, Texas Instruments Incorporated 27 Bill of Materials 8 www.ti.com Bill of Materials Table 5. BOM 28 Item Qty Reference Value Part Description Manufacturer Manufacturer Part Number PCB Footprint 1 10 C2, C3, C21, C22, C24, C25, C27, C28, C30, C31 0.1 µF Capacitors 0.1 µF; 0201; X5R; 20%; 6.3 V TDK C0603X5R0J104M030 BC 0201 2 16 C1, C9, C10, C11, C17, C18, C20, C23, C26, C29, C32, C34, C53, C39, C44, C49 0.1 µF Capacitors 0.1 µF; 0402; X7R; 10%; 16 V TDK C1105X7R1C104K 0402 3 1 C6 1.0 µF Capacitors 1.0 µF; 0402; X5R; 10%; 10 V Taiyo Yuden LMK105BJ105KV-F 0402 4 6 C7, C8, C12, C13, C15, C16 10000 pF Capacitors 10000 pF; 0402; X7R; 10%; 50 V Murata GRM155R71H103KA8 8D 0402 5 5 C14, C19, C40, C41, C52 10 µF Capacitors 10 µF; 0402; X5R; 20%; 6.3 V Samsung CL05A106MQ5NUNC 0402 6 2 C4, C5 18 pF Capacitors 18 pF; 0402; C0G (NPO); 5%; 50 V Murata GRM1555C1H180JZ0 1D 0402 7 4 C42, C46, C47, C51 2.2 µF Capacitors 2.2 µF; 0402; X5R; 20%; 6.3 V TDK C1005X5ROJ225M 0402 8 2 C33, C38 4.7 µF Capacitors 4.7 µF; 0402; X5R; 10%; 6.3 V TDK C1005X5ROJ475K 0402 9 6 C43, C45, C48, C50, C35, C36 22 µF Capacitors 22 µF; 0603; X5R; 20%; 6.3 V TDK C1608X5ROJ226M 0402 10 21 R8, R9, R10, R11, R12, R13, R21, R23, R24, R26, R28, R16, R17, R18, R19, R35, R36, R37, R39, R42, R44 10.0k Resistors 10.0k; 0402; 1/10W; 1% Panasonic ERJ-2RKF1002 0402 11 4 R45, R46, R47, R48 61.9k Resistors 61.9k; 0402; 1/16W; 1% Panasonic ERJ-2RKF6192X 0402 12 1 R27 301 Resistors 301; 0402; 1/10W; 1% Panasonic ERJ-2RKF3010X 0402 13 2 R20, R34 33.2k Resistors 33.2k; 0402; 1/16W; 0.5% Panasonic RR0510P-3322-D 0402 14 2 R14, R15 4.70k Resistors 4.70k; 0402; 1/16W; 1% Vishay Dale CRCW04024K70FKE D 0402 15 1 R22 45.3k Resistors 45.3k; 0402; 1/16W; 1% Panasonic ERJ-2RKF4532X 0402 16 2 R41, R43 47.0k Resistors 47.0k; 0402; 1/10W; 1% Panasonic ERJ-2RKF4702X 0402 17 1 R25 8.25k Resistors 8.25k; 0402; 0.063W; 1%; 50 V Venkel CR0402-16W-8251FT 0402 18 1 R7 9.09k Resistors 9.09k; 0402; 1/16W; 1%; 75 V Venkel CR0402-16W-9091FT 0402 19 1 R6 90.9k Resistors 90.9k; 0402; 1/16W; 1% Yageo RC0402FR-0790K9L 0402 20 5 FB1, FB2, FB3, FB4, FB5 220 Filters 220; 0603; 2A; %; Murata BLM18EG221SN1D 0603 21 5 U1, U3, U4, U5, U6 TPD6E05U06RVZ R Circuit Protection TPD6E05U06RVZR; 14UFDFN; %; 14 V Texas Instruments TPD6E05U06RVZR 14-UFDFN 22 1 L2 2.2 µH Inductors_Coils_Chokes 2.2 µH; 1008; 1.3 A; 20% Murata LQM2HPN2R2MGOL 1008 23 1 L1 6.8 µH Inductors_Coils_Chokes 6.8 µH; 1210; 700 mA; 20% TDK NLCV32T-6R8M-PFR 1210 24 1 D4 LED - Green Clear Optoelectronics LED Green Clear ; 0805; 35 mcd; 20%; 2 V Lite-On LTST-C170KGKT 0805 25 1 D1 MBR0520LT1G Discrete Semiconductor Products MBR0520LT1G; SOD-123; 500 mA; %; 20 V ON Semiconductor MBR0520LT1G SOD-123 26 1 D2 Single Discrete Semiconductor Products Single; SMA; 1A; %; 30 V Diodes Inc. B130-13-F SMA 27 1 U7 TPS2003CDRC Integrated Circuits TPS2003CDRC; 10-SON; ; % Texas Instruments TPS2003CDRC 10-SON 28 2 U12, U13 TPS2546RTET Integrated Circuits TPS2546RTET; 16WQFN; ; % Texas Instruments TPS2546RTET 16-WQFN 29 1 U11 TPS22910AYZV Integrated Circuits TPS22910AYZV; 4-XFBGA, DSBGA; ; % Texas Instruments TPS22910AYZV 4-XFBGA, DSBGA 30 1 U2 TUSB8041 Integrated Circuits TUSB8041; 64-QFN; ; % Texas Instruments TUSB8041 64-QFN TIDA-00288 4-Port USB 3.0 Hub Reference Design Copyright © 2014, Texas Instruments Incorporated TIDU614 – October 2014 Submit Documentation Feedback Bill of Materials www.ti.com Table 5. BOM (continued) Item Qty Reference Value Part Description Manufacturer Manufacturer Part Number PCB Footprint 31 2 U9, U10 LMR10510XMF/N OPB Integrated Circuits LMR10510XMF/NOPB; SOT-23-5; ; % Texas Instruments LMR10510XMF/NOPB SOT-23-5 32 1 Y1 24 MHz Crystals & Oscillators 24 MHz; 5.00 mm x 3.20 mm; 18 pF; 20%; CTS-Frequency Controls 445C25D24M00000 5.00 mm x 3.20 mm 33 1 J6 Power jack R/A Connectors Power jack R/A; ; ; %; Cui Inc PJ-068B-SMT 34 4 J2, J3, J4, J5 USB 3.0 - A Type Connectors USB 3.0 - A Type; 16.5 x 13.8 x 7.0; 85°C; %; 30 V FCI 10017835-002LF 16.5 x 13.8 x 7.0 35 1 J1 USB - microUSB Type Connectors USB microUSB Type; SMT; % Hirose ZX360D-B-10P SMT 36 11 R1, R4, R5, R29, R30, R31, R32, R33, R38, R40 DNI DNI N/A N/A 0402 37 1 R3 DNI DNI N/A N/A 0402 TIDU614 – October 2014 Submit Documentation Feedback TIDA-00288 4-Port USB 3.0 Hub Reference Design Copyright © 2014, Texas Instruments Incorporated 29 IMPORTANT NOTICE FOR TI REFERENCE DESIGNS Texas Instruments Incorporated ("TI") reference designs are solely intended to assist designers (“Buyers”) who are developing systems that incorporate TI semiconductor products (also referred to herein as “components”). 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