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MMPF0100 数据表(PDF) 62 Page - Freescale Semiconductor, Inc |
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MMPF0100 数据表(HTML) 62 Page - Freescale Semiconductor, Inc |
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62 / 136 page  Analog Integrated Circuit Device Data 62 Freescale Semiconductor PF0100 Functional Block Requirements and Behaviors Power Generation SW3A/B Dual Phase SW3A/B can be connected in dual phase configuration using one inductor per switching node, as shown in Figure 17. This mode allows a smaller output voltage ripple. Feedback is taken from pin SW3AFB and pin SW3BFB must be left open. Although control is from SW3A, registers of both regulators, SW3A and SW3B, must be identically set. In this configuration, the regulators switch 180 degrees apart. Driver Controller EA Z1 Z2 Internal Compensation SW3AIN SW3ALX SW3AFB ISENSE COSW3A CINSW3A LSW3A I2C Interface GNDSW3A SW3 SW3AMODE SW3AFAULT VREF DAC I2C VIN Driver Controller SW3BIN SW3BLX ISENSE COSW3B CINSW3B LSW3B GNDSW3B SW3BMODE SW3BFAULT VIN EA Z1 Z2 Internal Compensation VREF DAC I2C SW3BFB Figure 17. SW3A/B Dual Phase Block Diagram |
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