Title:
METHODS AND APPARATUS FOR NEGATIVE OUTPUT VOLTAGE ACTIVE CLAMPING USING FLOATING BANDGAP REFERENCE AND TEMPERATURE COMPENSATION
Document Type and Number:
WIPO Patent Application WO/2018/119581
Kind Code:
A1
Abstract:
Methods, apparatus, systems and articles of manufacture for negative output voltage active clamping using a floating bandgap reference and temperature compensation are disclosed. An example load switch (1200) includes a floating bandgap reference circuit (1230) to generate a bandgap reference voltage (1231). A resistor divider (1250) is to generate a resistor divider voltage. A temperature compensator (1240) to apply a temperature compensation current (1241) to the resistor divider to create a temperature compensated resistor divider voltage. A power transistor (1265) is to be enabled when the temperature compensated resistor divider voltage is less than the bandgap reference voltage (1231). The example load switch (1200) can work under negative output voltage clamping and get better accuracy drain to source clamped voltage of power transistor (1265) for inductive load condition.
Inventors:
XU WEI (CN)
MA QINGJIE (CN)
WANG YANG (CN)
HE YAN (CN)
MA JUN (CN)
CUI ZHENGHAO (CN)
XU JINGWEI (US)
MA QINGJIE (CN)
WANG YANG (CN)
HE YAN (CN)
MA JUN (CN)
CUI ZHENGHAO (CN)
XU JINGWEI (US)
Application Number:
PCT/CN2016/112125
Publication Date:
July 05, 2018
Filing Date:
December 26, 2016
Export Citation:
Assignee:
TEXAS INSTRUMENTS INC (US)
TEXAS INSTRUMENTS JAPAN LTD (JP)
TEXAS INSTRUMENTS JAPAN LTD (JP)
International Classes:
G05F1/567
Foreign References:
| CN101330252A | 2008-12-24 | |||
| CN104010424A | 2014-08-27 | |||
| CN104375554A | 2015-02-25 | |||
| CN102290995A | 2011-12-21 | |||
| CN101453270A | 2009-06-10 | |||
| US20060007616A1 | 2006-01-12 |
Attorney, Agent or Firm:
JEEKAI & PARTNERS (CN)
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