Which switch CBTL08GP053 or CBTL04GP043 is the right solutions for my system?
- If you are designing a host system with full alternate mode solution (4 lane DP or 2 Lane DP + USB3), sing 1 piece of CBTL08GP053 can cover all switching scenarios. Or you may use 3 pieces of CBTL04GP043, or 2 pieces of CBTL04GP043 with 1 piece of CBTL02032A together, to achieve the same result.
- If you are designing a host system with 2 Lane DP + USB3 only, sing 1 piece of CBTL08GP053 can cover all switching scenarios. Or you may use 2 pieces of CBTL04GP043 to achieve the same result.
- If you are designing a dongle with full alternate mode support, 1 piece of CBTL02043A and 1 piece of NX3L2G66 (for SBU/AUX) are needed.
- If you are designing a dongle with display only, 1 piece of NX3L2G66 is required for SBU/AUX signaling.
How is the USB Type-C switch CBTL08GP053 or CBTL04GP043 controlled?
CBTL08GP053 or CBTL04GP043 Switch settings can be configured by the system application processor or the PD policy controller. Typical interfaces are I2C or GPIO control.
When is a USB Type-C high speed switch CBTL08GP053 or CBTL04GP043 needed?
High speed switches CBTL08GP053 or CBTL04GP043 are needed to support the flipping feature of USB Type-C connector. These switches are available in small packages. They support multiple differential high speed lanes in both Tx and Rx direction and in both pass-thru or crossbar configurations. Additional low-speed sideband signaling is also supported as required by USB Type-C Alternate Modes.
Why should I use the redriver PTN36241BBS or PTN36242LBS or PTN36221AHX ?
As USB3.0 data rate goes up, signal quality deteriorates significantly over long PCB trace or cables. In order to recover from signal loss, NXP redrivers PTN36241BBS or PTN36242LBS or PTN36221AHX offers programmable TX de-emphasis and RX equalization to compensate high frequency channel loss and to reduce intersymbol interference which is major contributor of poor signal quality.
Which USB3.0 redriver PTN36241BBS or PTN36242LBS or PTN36221AHX, do I select for USB Type-C solution?
All redrivers in PTN36xxx family can be used for USB Type-C application. Each device is customized to offer the greatest flexibility and benefit.A) Single chip solution PTN36043, which integrates both redriver and USB3.0 data switch. This solution occupies the least PCB area, with fully adjustable channel conditions to adapt to various trace/cable lengths.
B)Two chip solution, PTN36241G + CBTL02043A. PTN36241G is a USB 3.0 redriver. CBTL02043A is high speed switch.
C)Simplified two chip solution, PTN36221A + CBTL02043. PTN36221A will be placed usually on the TX channel of the controller (for example, on the application processor’s TX). This is assuming the controller has very good equalizer to recover signals coming in from USB Type-C connector. PTN36221A also consumes half of the power comparing to a dual channel redriver.
Does NXP offer a simple plug and play solution for USB Type-C implementation?
PTN5100ABS, PTN5100BS, PTN5100DABS, PTN5100DBS, NXP PD policy controller, and NXP PD firmware is available as a complete USB Type-C solution that can be deployed into many platforms. Please contact NXP for reference designs and implementations.
Why is USB PD PHY needed?
USB Power Delivery specification defines protocol to communicate capabilities between a Host and Device. The PTN5100ABS, PTN5100BS, PTN5100DABS, PTN5100DBS is an interface device sitting between a USB Type-C connector and system application processor or PD policy controller; it handles the USB PD physical layer and protocol. In addition, PTN5100ABS/BS/DABS/BS integrates various power management features, dead battery initiation capability and control IOs to support many USB Type-C application scenarios.
How do I select a load switch for my new design including USB Type-C related applications?
If you are concerned with saving power or power sequencing, look for a slew rate controlled load switch with low and flat on-resistance for the intended range of operation.
If you need voltage protection or current protection, choose a load switches based on current rating and surge rating of the device and whether the device should open or regulate during a surge event. You’ll also want to consider package, quiescent current and features like over temperature protection, reverse current protection, and ESD protection.
Can the internal structure of the load switch prevent the backflow of current from the load to the power source in USB Type-C design?
Load switches integrating RCP (reverse current protection) will block the backflow of current from the output to the input. If output voltage exceeds input by a predetermined value, the power FET will open and disconnect the input to output connection. This also eliminates the need for external diodes.
Why would I use a surge protecting device over a discrete MOSFET in USB Type-C design?
A discrete MOSFET will not provide safety functions or allow programmability. A surge protecting device provides multilevel protection. It prevents excessive current draw from a load or short circuits. It can clamp or regulate voltage during a surge or heavy line transients. When such an event occurs the device will disconnect input from output thus preventing damage to the load.
What is the benefit of using an integrated load switch over an LDO for distributing power in USB Type-C design?
The advantages are threefold. First, the load switch reduces power dissipation by presenting a much lower voltage drop across the channel. Secondly, load switches provide in-rush current protection by limiting the slew rate under heavy loading. Finally, it brings a higher level of integration and thus saves PCB space.
Where I can find PTN3460 User manual UM10492?
You can find PTN3460 user manual UM10492 here: