By
09.14.2022
0
//php echo do_shortcode(‘[responsivevoice_button voice=”US English Male” buttontext=”Listen to Post”]’) ?>
Final 12 months, the USB Implementers Discussion board, Inc. (USB-IF) introduced USB Energy Supply Specification Revision 3.1 (USB PD3.1 specification), which supported greater energy vary, as much as 48 Volts, 5 Amps and 240 Watts. Because of this a complete improve will likely be carried out on energy adapters, USB Sort-C cables and digital units. For the USB Sort-C cables, the necessities for security efficiency will likely be greater.
Security of USB Sort-C Cables
The USB PD3.1 specification nonetheless adopts the USB Sort-C port, which has a pin pitch of 0.5 mm, which is rather more compact than the two.5 mm in a USB Sort-A port. On this case, USB Sort-C ports are extra weak by contaminants corresponding to mud and liquid. When contaminants enter the USB Sort-C port, it might kind a micro-short circuit between VBUS pin and GND pin on the USB Sort-C port. This will trigger the interface to overheat and trigger a hearth.
Determine 1. The burned USB Sort-C ports
As well as, frequent plugging and unplugging could trigger mechanical failure of the USB Sort-C port. These failures can destroy the pc’s interface and trigger severe harm to digital units, presumably even injuring the consumer by way of electrical shock or inflicting a hearth.
To be able to remedy the above points, an over-temperature safety resolution for the interface is required.
Determine 2. The USB Sort-C cable spontaneously combusts
Over Temperature Safety for the USB Sort-C Cables with USB eMarker HUSB332C
The brand new technology USB eMarker HUSB332C from Hynetek Semiconductor Co., Ltd. (www.hynetek.com) is suitable with USB PD3.1 specification, and helps as much as 240 Watts charging energy, whereas integrating Over Temperature Safety (OTP) with Hynetek patented OTP perform to make sure superior efficiency and efficient safety for the USB Sort-C cables. The HUSB332C comes with temperature detection with pre-set safety temperature restrict values. When the USB Sort-C port overheats, the HUSB332C will detect the temperature contained in the USB Sort-C port and as soon as the temperature exceeds the OTP restrict worth, it’ll ship a reset sign to the USB PD energy provide to chop off the VBUS energy to guard the circuit. When the temperature drops beneath the OTP restrict, the facility supply recovers.
Determine 3. Waveform diagram of HUSB332C throughout over-temperature take a look at
Determine 4. Reference circuit of “One Cable with Two eMarkers”
The reference circuit of “One Cable with Two eMarker” utilizing the HUSB332C can meet the cable’s over-temperature safety necessities. [Note: ” One Cable with Two eMarkers ” means there is one eMarker at each end of the USB Type-C cable.]
Resolution Evaluation of ” One Cable with Two eMarkers”
Determine 5. Examples of “One Cable with Two eMarker”
With the introduction of USB PD3.1 specification, USB4 Gen3 specification, Thunderbolt 4 specification and different specs, as proven above, the ” One Cable with Two eMarkers ” cables which helps for high-power present switch, ultra-high-speed knowledge switch, video sign switch, are steadily seen available in the market. Amongst them, the unique meeting cable in Samsung’s new Galaxy S22 sequence 45W journey charger adopts the “One Cable with Two eMarkers” design. There may be one HUSB332A (the USB eMarker from Hynetek) at each ends of the cable.
The HUSB332A’s excessive efficiency and reliability has been confirmed by many well-known firms and the USB Sort-C cable market. On the improve of the HUSB332A, the HUSB332B can help USB PD3.1 specification. As well as, the HUSB332C enhances the over temperature safety (OTP) perform.
Comparability of 4 OTP Options for the USB Sort-C Cables
Evaluating the 4 over-temperature safety options for the USB cables available in the market, we are able to simply discover that the over-temperature safety resolution through the use of USB eMarker has the plain benefits of small measurement and excessive value efficiency. The USB eMarker chip is required by the USB-IF to satisfy the charging necessities of three Amps and above. So when USB eMarker integrates the OTP perform, the cable will be protected with out the necessity for extra OTP circuit. This drastically reduces the variety of peripheral units, whereas additionally lowering value.
Key Product Options of the USB eMarker HUSB332C
- USB Sort-C 2.1 and USB PD 3.1 Compliant
- Help SOP’ Communication
- Built-in Transceiver (BMC PHY)
- Help Each Structured VDM Model 1.0 and a pair of.0
- Excessive Integration
- Built-in Over- Temperature Safety
- Totally different Bundle Choices:
- 2 mm x 2 mm DFN-6L
- 095 mm x 1.305 mm WLCSP-6B (underneath improvement)
- Help 4 Occasions Programming
- Appropriate with CC Wire Programming Instruments
- Help 2.7 V ~ 5.75 V operation on VCONN1 and VCONN2 Pins
- 35 V Excessive Voltage Tolerance on CC, VCONN1 and VCONN2 Pins
- Help Thunderbolt 3 and Thunderbolt 4 Knowledge Communication
- Encryption Instructions Supported for Vendor Identification
- Built-in Over-temperature Safety
- 6 mA Extremely-Low Energy Consumption
In case you are in search of an Over-Temperature Safety Resolution for USB Cables, please go to https://en.hynetek.com or contact gross sales@hynetek.com for particulars.
0 Comments