参数资料
型号: 88EM8081XX-SAG2C000-T
厂商: MARVELL SEMICONDUCTOR INC
元件分类: 稳压器
英文描述: 2 A POWER FACTOR CONTROLLER, 120 kHz SWITCHING FREQ-MAX, PDSO8
封装: GREEN, SOIC-8
文件页数: 10/64页
文件大小: 667K
代理商: 88EM8081XX-SAG2C000-T
88EM8080/88EM8081
Datasheet
Doc. No. MV-S106340-01 Rev. B
Copyright 2010 Marvell
Page 18
Document Classification: Proprietary
August 6, 2010, Preliminary Information
4. If the duty cycle is less than 3% from the DSP calculations, one PWM cycle is skipped and this duty-cycle value is added
to the next PWM duty cycle calculation.
5. To achieve almost constant power limit for the universal input range, current protection self-adjusts thresholds in four
zones of input voltage levels. A margin of 50% compared to the rated current is considered for the threshold current
values.
6. Threshold of negative voltage drop across Rsns due to instantaneous current
7. With input divider ratio of 1/100, these values are equivalent to 90 Vrms<Vline<135 Vrms. (Section 5.2, equation (1))
8. With input divider ratio of 1/100, these values are equivalent to 135 Vrms<Vline<185 Vrms. (Section 5.2, equation (1))
9. With input divider ratio of 1/100, these values are equivalent to 185 Vrms<Vline<245 Vrms. (Section 5.2, equation (1))
10.With input divider ratio of 1/100, these values are equivalent to 245 Vrms<Vline<275 Vrms. (Section 5.2, equation (1))
11.OCP falling threshold for VIOVER_CYC is 1V with a hysteresis of 0.68V.
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