| 摘要 |
A pulse modulated converter comprising an input stage (1) for generating a first control signal (2) based on an input signal (3) and a first feedback signal (4), and a comparator (5) for generating a pulse width modulated signal (6) based on said first control signal and a reference signal (7), means for providing a hysteresis when generating the pulse width modulated signal (6), a power stage (8) for generating an amplified pulse width modulated signal (9), an output filter (10) for filtering said amplified pulse width modulated signal (9), so as to create an analog output signal (11). In said pulse modulated converter, the first feedback signal (4) is formed as a combination of a second feedback signal (12) and a third feedback signal (13). The second feedback signal (12) is derived from the amplified pulse width modulated signal (9) using a first predetermined transfer function (14). The third feedback signal (13) is derived from the analog output signal (11) using a second predetermined transfer function (15). The second predetermined transfer function (15) comprises at least one zero.
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