Title:
SWITCHING CONVERTER WITH ANALOG ON-TIME EXTENSION CONTROL
Document Type and Number:
WIPO Patent Application WO/2021/196115
Kind Code:
A1
Abstract:
A system (600) includes: 1) a battery (640) configured to provide an input voltage (VIN); 2) switching converter circuitry (650) coupled to the battery (640), wherein the switching converter circuitry includes a power switch (S1); 3) a load (RLOAD) coupled to an output of the switching converter circuitry (650); and 4) a control circuit (660) coupled to power switch (S1). The control circuit (660) includes: 1) a switch driver circuit (630) coupled to the power switch (S1); 2) a summing comparator circuit (670) configured to output a first control signal (LOOPRAW) that indicates when to turn the power switch (S1) on; and 3) an analog on-time extension circuit (610) configured to extend an on-time of the power switch (S1) by gating a second control signal (SHOT) with the first control signal (LOOPRAW), wherein the second control signal (SHOT) indicates when to turn the power switch (S1) off.
Inventors:
WANG ZEJING (CN)
LI ZHUJUN (CN)
ZHOU SONGMING (CN)
WANG YU (CN)
LI ZHUJUN (CN)
ZHOU SONGMING (CN)
WANG YU (CN)
Application Number:
PCT/CN2020/082930
Publication Date:
October 07, 2021
Filing Date:
April 02, 2020
Export Citation:
Assignee:
TEXAS INSTRUMENTS INC (US)
TEXAS INSTRUMENTS JAPAN LTD (JP)
TEXAS INSTRUMENTS JAPAN LTD (JP)
International Classes:
H02M3/158; H02M1/08
Foreign References:
| US20160268907A1 | 2016-09-15 | |||
| US20080088284A1 | 2008-04-17 | |||
| US10333403B2 | 2019-06-25 | |||
| US20140340064A1 | 2014-11-20 |
Attorney, Agent or Firm:
LEE AND LI - LEAVEN IPR AGENCY LTD. (CN)
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