Switching voltage regulator circuit

Details Switching voltage regulator circuit Switching voltage regulator circuit

1987-08-03

1989-04-18

Salce, Patrick R.

Electricity: power supply or regulation systems

Output level responsive

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

323299, 363 21, G05F 1563

Patent

active

048230707

ABSTRACT:
An integrated circuit for use in implementing a switching voltage regulator, the integrated circuit including a power switching transistor, driver circuitry and control circuitry, which is operable in a normal feedback mode or an isolated flyback mode. The integrated circuit includes shutdown circuitry for placing the regulator in a micro-power sleep mode, and can be packaged in a five-pin conventional power transistor package. The terminals of the integrated circuit regulator perform multiple functions. A compensation terminal is used for frequency compensation, current limiting, soft-start operation and shutdown. A feedback terminal is used as a feedback input when the integrated circuit is in feedback mode, and as a logic pin to program the regulator for isolated flyback operation. The feedback terminal is also used to trim the flyback reference voltage.

REFERENCES:
patent: 4146832 (1979-03-01), McConnell
patent: 4209826 (1980-06-01), Priegnitz
patent: 4253137 (1981-02-01), Rao
patent: 4425612 (1984-01-01), Bahler et al.
patent: 4641229 (1987-02-01), Easter
patent: 4652808 (1987-03-01), Mostyn et al.
Data sheet, "Switching Dc-to-DC Microconverters--LSH 6300 Series", date unknown.
Data sheet, Unitrod UC 1846 Current Mode PWM Controller integrated circuit, 12/83.
Documents relating to the Linear Technology Corporation LT-1070 integrated circuit.

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