VOOC

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Oppo VOOC (Voltage Open Loop Multi-step Constant-Current Charging), also known as a Warp Charge or SUPERVOOC on OnePlus devices and Dart Charge on Realme devices, is a proprietary rapid-charge technology created by BBK Electronics. [1] In contrast to the USB Power Delivery and Qualcomm Quick Charge technology, which increases the voltage during fast charging, VOOC uses a higher current than standard USB charging. The VOOC Flash Charge circuit technology reportedly lowers the temperature of the charging adapter, and creates an interface from the adapter to the phone, which, OPPO claims, improves the speed and safety of the charge. [2]

Contents

VOOC 2.0 has been licensed to OnePlus as Dash Charge technology. [3] A single-cell, 30-watt (5 V/6 A) version of VOOC 4.0 has also been licensed to OnePlus as Warp Charge. [4] [5] OnePlus does not market its phones as VOOC-compatible despite the fact that VOOC 2.0 and Dash are compatible with the phones. [3]

As of July 2019, VOOC has been licensed to 14 other corporations, most of which are in the phone charging and power strip industries. Oppo claims that more than 1000 patents around VOOC have been filed worldwide. [6]

Versions

As of 2022, VOOC / SuperVOOC comes in a few variations:

Devices

Dash Charge for OnePlus 5 Dash Charge for OnePlus 5-8477.jpg
Dash Charge for OnePlus 5

All models reported include the "s" (or OnePlus "T"), "Plus", and "Pro" variants.

Oppo's mobile DAC, Oppo HA-2SE, also features VOOC charging. [18]

Technology

All versions of VOOC require a proprietary cable to work. [19] In addition to electrical requirements like the thickness (low electrical resistance) to handle the high currents without overheating, the VOOC 2.0/Dash protocol requires a fifth pin on the USB-A to USB-C cable to communicate through. [20] Without such communication, the charger runs at a limit of 5 V/1.5 A. [21] From VOOC 4.0 this limit elevated to 5V/2.0A. [22] With the even higher power of SuperVOOC 2.0, the cable itself is authenticated with a cryptographic E-marker for safety. [9]

On the Android phone end, the VOOC communication code is open source under GNU General Public License (GNU GPL) version 2 as a part of the modified Linux kernel, and has been used by custom ROMs like Lineage OS. [23] The firmware code for PIC16F microcontrollers on the "VOOC IC" is also defined in the code. [24] [25] Documentation provided by OnePlus mentions a BQ27541 battery gauge chip made by Texas Instruments, with Dash-specific protocol extensions. [26] The source code allows a list of parts used for the technology to be made: for example, the Find X uses a pic1508/stm8s chip on the adapter and a bq25882 two-cell charger chip on the phone. The BQ27541 gauge is exchanged for a BQ28Z610 gauge which can handle two-cell battery packs. [24] [ original research? ]

Marketing

OnePlus used the fact that Dash Charge charging speed did not slow down during operation of the phone as a marketing tool. [27] [28]

Other fast-charging technologies

Related Research Articles

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References

  1. ↑ "Oppo Super VOOC Fast-Charging Explained". 24 June 2018. Retrieved 6 March 2020.
  2. ↑ Martin, Taylor (2014-05-20). "Every smartphone needs rapid charging". Pocketnow. Archived from the original on 2017-04-12. Retrieved 2017-04-11.
  3. 1 2 "Dash Charge for OnePlus 3 explained". Android Central. Archived from the original on 2017-04-12. Retrieved 2017-04-11.
  4. 1 2 "All you need to know about OnePlus' 30W Warp Charge standard". Android Central. 24 May 2019. Archived from the original on 2 June 2019. Retrieved 2 June 2019.
  5. ↑ "Warp Charge Magnetic Cable". 2021-06-18.
  6. ↑ "OPPO与八家企业签署VOOC闪充专利许可协议 - oppo 欧珀手机". cnBeta (in Chinese (China)). Archived from the original on 29 July 2019. Retrieved 30 July 2019.
  7. 1 2 John, Jed (22 March 2019). "OPPO Reno comes with VOOC 3.0 which improves fast charging speed by 23.8%". Gizmochina. Archived from the original on 1 June 2019. Retrieved 2 June 2019.
  8. 1 2 Byford, Sam (10 October 2018). "Oppo has the fastest fast charging we've ever seen". The Verge. Archived from the original on 2 June 2019. Retrieved 2 June 2019.
  9. 1 2 3 Minsheng securities (31 August 2020). "快充新"赛道"，行业势不可挡" (PDF) (in Chinese). Retrieved 24 August 2022.
  10. ↑ "OPPO's new 150W SuperVOOC fast charging tech will soon debut on a OnePlus phone". xda-developers. 2022-02-28. Retrieved 2022-02-28.
  11. ↑ Twitter https://twitter.com/oppo/status/1498304483176038402 . Retrieved 2022-02-28.{{cite web}}: Missing or empty |title= (help)
  12. ↑ How fast is OPPO's 240W charging? , retrieved 2022-03-25
  13. ↑ "OPPO VOOC Flash Charge, Quick Charge - OPPO Global - OPPO Global". www.oppo.com. Archived from the original on 2017-04-12. Retrieved 2017-04-11.
  14. ↑ "Oppo A3s is official with 4,230 mAh battery and 6.2-inch notched display". xda-developers. 2018-07-13. Archived from the original on 2020-01-24. Retrieved 2018-07-14.
  15. ↑ "OPPO R11 support VOOC Flash Charge". www.oppo.com. Archived from the original on 2017-06-13. Retrieved 2017-06-10.
  16. ↑ "OnePlus 3T". oneplus.net. Archived from the original on 2017-04-12. Retrieved 2017-04-11.
  17. ↑ "Specs | OnePlus 8" . Retrieved 21 July 2020.
  18. ↑ "OPPO Digital - Ultra HD Blu-ray Disc Players". www.oppodigital.com. Retrieved 2022-08-10.
  19. ↑ "If your OPPO phone won't flash charge". OPPO Global. Archived from the original on 2019-06-02. Retrieved 2019-06-02.
  20. ↑ sbooth. "What is the OnePlus 3 DASH charging/sync cable doing internally?? Let's probe it!". OnePlus Community. Archived from the original on 2019-06-02. Retrieved 2019-06-02.
  21. ↑ "Dash Charge protocol analysis". XDA Developers. Archived from the original on 2019-06-02. Retrieved 2019-06-02.
  22. ↑ "Oppo VOOC fast charging limits without vooc chargers". deathline.net. Archived from the original on 2020-10-10. Retrieved 2020-10-10.
  23. ↑ "drivers/power/oppo in LineageOS/android_kernel_oppo_msm8974". GitHub. LineageOS. 29 May 2019.
  24. 1 2 "drivers/power/oppo in oppo-source/FindX-8.1-kernel-source". GitHub. 24 May 2019. Retrieved 2 June 2019.
  25. ↑ "oneplus_fastcg.c in OnePlusOSS/android_kernel_oneplus_msm8998 (branch 5T)". GitHub. OnePlus Open Source Software. 2 June 2019. Retrieved 2 June 2019.
  26. ↑ "oneplus_fastcg.txt in OnePlusOSS/android_kernel_oneplus_msm8998". GitHub. 29 September 2021.
  27. ↑ Dash Charge on the OnePlus 5T - Screen-On Charge Comparison , retrieved 2023-03-22
  28. ↑ OnePlus 3T – Power up your commute with Dash Charge , retrieved 2023-03-22
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