Miscellaneous active electrical nonlinear devices – circuits – and – Signal converting – shaping – or generating – Generating sawtooth or triangular output
Patent
1998-12-16
2000-11-14
Nuton, My-Trang
Miscellaneous active electrical nonlinear devices, circuits, and
Signal converting, shaping, or generating
Generating sawtooth or triangular output
327172, H03K 708
Patent
active
061475262
ABSTRACT:
A DC--DC converter having an input node receiving an input voltage V.sub.IN and generating an output voltage V.sub.OUT. A reference voltage generator provides a voltage V.sub.REF and a hysteresis voltage generator provides a voltage V.sub.HYST. A first comparator generates a signal determined from a difference between V.sub.REF and V.sub.OUT. A second comparator generates a signal determined from a difference between V.sub.OUT and V.sub.HYST. A latch is coupled to receive the outputs of the first and second comparators, and to generate an output. A driver circuit receives the latch output and generates a PWM signal used to switch the output stage. A double pulse suppression circuit masks off the latch inputs for a preselected time during the switching intervals fo the main power transistors to eliminate noise jitter.
REFERENCES:
patent: 4011507 (1977-03-01), Rossell
patent: 4017747 (1977-04-01), Sheng
patent: 5394020 (1995-02-01), Nienaber
patent: 5592128 (1997-01-01), Hwang
patent: 5684424 (1997-11-01), Felix et al.
patent: 5912593 (1999-06-01), Susak et al.
Efland Taylor R.
Hodson Lester L.
Jones Steven C.
Skelton Dale J.
Brady III Wade James
Nuton My-Trang
Telecky Jr. Frederick J.
Texas Instruments Incorporated
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