Title:
ANALOG LIMIT ON DIGITALLY SET PULSE WIDTHS
Document Type and Number:
WIPO Patent Application WO/2017/003682
Kind Code:
A3
Abstract:
A power switching device (e.g., MOSFET) drives relatively large surges of pulsed power through a laser emitter of a Time of Flight determining system where both the switching device and laser emitter are closely packed on a printed circuit board having further closely packed and temperature sensitive other components. A pulse duration limiting circuit is provided having an analog integrator configured to integrate over time, the produced and programmably defined pulses. A voltage triggered clamping device couples to an output of the analog integrator. The voltage triggered clamping device has a predetermined threshold voltage at and above which it switches from a relatively low transconductance mode to a substantially higher transconductance mode. The voltage triggered clamping device is coupled to a current supplying circuit branch of the system, the current supplying circuit branch being one that has an ability to supply current for switching on the power switching device.
Inventors:
WYLAND DAVID C (US)
MEHTA AGUSTYA RUCHIR (US)
MEHTA AGUSTYA RUCHIR (US)
Application Number:
PCT/US2016/037471
Publication Date:
March 09, 2017
Filing Date:
June 15, 2016
Export Citation:
Assignee:
MICROSOFT TECHNOLOGY LICENSING LLC (US)
International Classes:
H01S5/042; G01S7/484; G06F3/01; H01S5/00; H02H9/04; H03K17/08; H03K17/0812
Foreign References:
| US8427226B2 | 2013-04-23 | |||
| EP0354435A2 | 1990-02-14 | |||
| EP0467682A2 | 1992-01-22 | |||
| US20020135344A1 | 2002-09-26 | |||
| US20110279366A1 | 2011-11-17 | |||
| US20140184496A1 | 2014-07-03 |
Attorney, Agent or Firm:
MINHAS, Sandip et al. (US)
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