公开(公告)号：US10326375B1

公开(公告)日：2019-06-18

申请号：US15835234

申请日：2017-12-07

Applicant: Silicon Laboratories Inc.

Inventor： Krishna Pentakota ,  Mohammad Al-Shyoukh ,  Stefan N. Mastovich

IPC: H04L7/00 ,  H02M3/335 ,  G01R19/18 ,  H01L21/48 ,  H01L23/498 ,  H01L23/66 ,  H03F3/213 ,  H03F3/195 ,  H02M7/537 ,  H01L23/64 ,  H01F19/08

Abstract: An isolated power transfer device has a primary side and a secondary side isolated from the primary side by an isolation barrier. A secondary-side circuit includes a rectifier circuit coupled to a secondary-side conductive coil. The secondary-side circuit includes a first resistor coupled to a first power supply node and a terminal node. The secondary-side circuit includes a second resistor coupled to the terminal node and a second power supply node. The secondary-side circuit includes a first circuit to generate a feedback signal in response to a reference voltage and a signal on the terminal node. The feedback signal has a hysteretic band defined by the first resistor and the second resistor. The secondary-side circuit is configured as an AC/DC power converter that provides, on the first power supply node, an output DC signal having a voltage level based on a ratio of the first resistor to the second resistor.

公开(公告)号：US20190181764A1

公开(公告)日：2019-06-13

申请号：US15835234

申请日：2017-12-07

Applicant: Silicon Laboratories Inc.

Inventor： Krishna Pentakota ,  Mohammad Al-Shyoukh ,  Stefan N. Mastovich

IPC: H02M3/335 ,  G01R19/18 ,  H01L21/48 ,  H01L23/498 ,  H01L23/64 ,  H01L23/66 ,  H03F3/213 ,  H03F3/195 ,  H02M7/537

Abstract: An isolated power transfer device has a primary side and a secondary side isolated from the primary side by an isolation barrier. A secondary-side circuit includes a rectifier circuit coupled to a secondary-side conductive coil. The secondary-side circuit includes a first resistor coupled to a first power supply node and a terminal node. The secondary-side circuit includes a second resistor coupled to the terminal node and a second power supply node. The secondary-side circuit includes a first circuit to generate a feedback signal in response to a reference voltage and a signal on the terminal node. The feedback signal has a hysteretic band defined by the first resistor and the second resistor. The secondary-side circuit is configured as an AC/DC power converter that provides, on the first power supply node, an output DC signal having a voltage level based on a ratio of the first resistor to the second resistor.

公开(公告)号：US20190178937A1

公开(公告)日：2019-06-13

申请号：US15836363

申请日：2017-12-08

Applicant: Silicon Laboratories Inc.

Inventor： Huanhui Zhan ,  Krishna Pentakota ,  Stefan N. Mastovich

IPC: G01R31/317 ,  G01R31/316

Abstract: An integrated circuit includes a supply terminal to receive a supply voltage and a test terminal that operates in an input mode and an output mode. A test interface of the integrated circuit operates in a normal mode requiring a serial write to the test terminal to access test locations in the integrated circuit. The test interface also operates in an automatic mode in which addresses for test locations are auto incremented by toggling the supply voltage from a high voltage level to a low voltage level and back to the high voltage level. In an input mode, with the supply voltage at the low voltage level, the test pin receives configuration and address information. In output mode, with the supply voltage at the high voltage level, the test pin supplies test information corresponding to the address information received.

公开(公告)号：US20180348295A1

公开(公告)日：2018-12-06

申请号：US15609996

申请日：2017-05-31

Applicant: Silicon Laboratories Inc.

Inventor： Ernest T. Stroud ,  Stefan N. Mastovich ,  Huanhui Zhan ,  Tamás Marozsák ,  András V. Horváth

IPC: G01R31/28

Abstract: An isolation system includes a transmit die and a receive die coupled by an isolation channel. The transmit die receives diagnostic data at an input terminal and transmits the diagnostic data over an isolation channel to a receive die. The receive die supplies a signal from an internal node in the receive die identified by the diagnostic data to an output terminal of the receive die. Other diagnostic data received by the transmit die causes the transmit die to supply a signal from an internal node in the transmit die to a terminal of the transmit die.

公开(公告)号：US20180269877A1

公开(公告)日：2018-09-20

申请号：US15459226

申请日：2017-03-15

Applicant: Silicon Laboratories Inc.

Inventor： Ernest T. Stroud ,  Stefan N. Mastovich

IPC: H03K19/0185 ,  H03K5/08 ,  H01L27/02 ,  H03K5/24 ,  H02M3/07 ,  H03K3/011

CPC classification number: H03K19/018507 ,  H01L27/0251 ,  H01L27/0266 ,  H02M3/07 ,  H03K3/011 ,  H03K5/08 ,  H03K5/24

Abstract: An integrated circuit includes an input terminal configured to receive an input signal, a reference voltage node configured to provide a control voltage, and a pass transistor comprising a first terminal coupled to a first node, a control terminal coupled to the reference voltage node, and a second terminal coupled to the input terminal. The control voltage has a control voltage level sufficient to allow a signal to pass from the second terminal to the first terminal. The pass transistor is configured to linearly transfer the input signal to the first node in response to a voltage level of the input signal being below a first voltage level and configured to transfer a voltage-limited version of the input signal to the first node in response to the voltage level being above the first voltage level. At most, a negligible DC current flows through the input terminal into the second terminal.