DC-to-DC converter with inductor current sensing and related met

Details DC-to-DC converter with inductor current sensing and related met DC-to-DC converter with inductor current sensing and related met

1998-12-24

1999-11-09

Berhane, Adolf Deneke

Electricity: power supply or regulation systems

Output level responsive

Using a three or more terminal semiconductive device as the...

323222, G05F 140

Patent

active

059821604

ABSTRACT:
A DC-to-DC power converter includes at least one power switch, a pulse width modulation circuit for generating control pulses for the at least one power switch, an output inductor connected to the at least one power switch, and a current sensor connected in parallel with the inductor for sensing current passing through the inductor. The current sensor preferably includes a resistor and a capacitor connected together in series. The current sensor is connected to a peak current control loop circuit cooperating with the pulse width modulation circuit for controlling the at least one power switch responsive to the current sensor. The resistor and capacitor preferably have respective values so that the current sensor is a substantially instantaneous current sensor. The output inductor has an inductance and a direct current (DC) resistance defining a first time constant. In one embodiment, the resistor and capacitor of the current sensor define a second time constant within a predetermined range of each other. In another embodiment, the resistor and capacitor of the current sensor define a second time constant substantially equal to the first time constant.

REFERENCES:
patent: 4524412 (1985-06-01), Eng
patent: 4553084 (1985-11-01), Wrathall
patent: 4672303 (1987-06-01), Newton
patent: 5101335 (1992-03-01), Ludden et al.
patent: 5111133 (1992-05-01), Poulo et al.
patent: 5132894 (1992-07-01), Rozman et al.
patent: 5189601 (1993-02-01), Sellers
patent: 5418709 (1995-05-01), Lukemire
patent: 5548206 (1996-08-01), Soo
patent: 5625275 (1997-04-01), Tanikawa et al.
patent: 5627460 (1997-05-01), Bazinet et al.
patent: 5646513 (1997-07-01), Riggio, Jr.
patent: 5690849 (1997-11-01), DeVilbiss et al.
patent: 5717322 (1998-02-01), Hawkes et al.
patent: 5723974 (1998-03-01), Gray
patent: 5747977 (1998-05-01), Hwang
patent: 5793193 (1998-08-01), Hodgins
patent: 5805433 (1998-09-01), Wood
Harris Product Sheet, HIP6011, "Buck Pulse-Width Modulator (PWM) Controller and Output Voltage Monitor", File No. 4409, Sep. 1997, pp. 1 to 10.
Harris Product Sheet, HIP5061, "7A, High Efficiency Current Mode Controlled PWM Regulator", File No. 3390.2, Apr. 1994, pp. 7-53 to 7-72.
Tech Brief No. TB356, "Selecting Among HIP6004/5, HIP6004A/5A, HIP6004B15B, and HIP6014/15 for the Controller Best Suited to Your Application", Jul. 1998, pp. 1 to 2.
Maxim Product Sheet, MAX1624/MAX1625, "High-Speed Step-Down Controllers With Synchronous Rectification for CPU Power", Jun. 1997, pp. 1 to 24.
LinFinity Application Note AN-7, "A Simple Current-Sense Technique Eliminating a Sense Resistor", Jul. 1998, pp. 1 to 6.
Harris Product Sheet, HIP5020, "Integrated-Power Buck Converter Controller With Synchronous Rectification", File No. 4243 Jan. 1997, pp. 1 to 16.

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