US 2014/0368177 A1Published application

Voltage adjustment system

AssigneeHon Hai Precision Industry Co., Ltd.

InventorsHSIANG-PIN TSENG, MIN-WEI LEE

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Abstract

A voltage adjustment system includes an adjust module, a control module, and a load module. The adjust module includes a voltage converting unit which includes a buck converter and an inductor. The control module includes a first resistor, a second resistor, and a variable resistance unit. The load module is electrically connected to the buck converter via the inductor. A connecting point between the inductor and the load module is grounded via the first resistor and the second resistor in series. A connecting point between the first resistor and the second resistor is grounded via the variable resistance unit. The variable resistance unit includes a thermal resistor located adjacent to the inductor. A resistance of the thermal resistor changes when a temperature of the inductor changes. An equivalent resistance of the variable resistance unit changes to adjust a voltage received by the load module.

Claims16

Dependent claims

A voltage adjustment system, comprising:

an adjust module comprising a voltage converting unit which comprises a buck converter and an inductor;
the buck converter comprising a current feedback terminal and a voltage feedback terminal;
a control module comprising a first resistor, a second resistor and a variable resistance unit;
and
a load module electrically connected to the current feedback terminal via the inductor;
wherein a connecting point between the inductor and the load module is grounded via the first resistor and the second resistor in series;
the voltage feedback terminal is electrically connected to a connecting point between the first resistor and the second resistor;
the connecting point between the first resistor and the second resistor is grounded via the variable resistance unit;
the variable resistance unit comprises a thermal resistor being located adjacent to the inductor;
a resistance of the thermal resistor changes when a temperature of the inductor changes;
and an equivalent resistance of the variable resistance unit changes to adjust a voltage received by the load module.

8 more elements

A voltage adjustment system, comprising:

an adjust module comprising a voltage converting unit which comprises a buck converter and an inductor;
a control module comprising a first resistor, a second resistor and a variable resistance unit;
and
a load module electrically connected to the buck converter via the inductor;
wherein a connecting point between the inductor and the load module is grounded via the first resistor and the second resistor in series;
a connecting point between the first resistor and the second resistor is grounded via the variable resistance unit;
the variable resistance unit comprises a thermal resistor being located adjacent to the inductor;
a resistance of the thermal resistor changes when a temperature of the inductor changes;
and an equivalent resistance of the variable resistance unit changes to adjust a voltage received by the load module.

6 more elements

Dependencies are inferred from the claim text.

Facts

Application: 14/183,516Filed 18 Feb 2014
Priority: TW 10212099013 Jun 2013
Published: 18 Dec 2014
Term ends: Not estimatedThe source records don’t support an estimate.

Classification11 codes

H02M 3/158
With automatic control of output voltage or current, e.g. switching regulators: including plural semiconductor devices as final control devices…
H02M 3/156
Using semiconductor devices only: with automatic control of output voltage or current, e.g. switching regulators
G05F 1/463
As a function of the requirements of the load, e.g. delay, temperature, specific voltage/current characteristic: sources providing an output which…
G05F 1/567
Sensing a condition of the system or its load in addition to means responsive to deviations in the output of the system, e.g. current, voltage,…:…