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MMPF0100Z Datasheet(PDF) 37 Page - NXP Semiconductors |
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MMPF0100Z Datasheet(HTML) 37 Page - NXP Semiconductors |
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37 / 128 page  NXP Semiconductors 37 PF0100Z FUNCTIONAL BLOCK REQUIREMENTS AND BEHAVIORS 6.4.4.3 SW1A/B/C SW1/A/B/C are 2.5 A to 4.5 A buck regulators which can be configured in various phasing schemes, depending on the desired cost/ performance trade-offs. The following configurations are available: • SW1A/B/C single phase with one inductor • SW1A/B as a single phase with one inductor and SW1C in independent mode with one inductor • SW1A/B as a dual phase with two inductors and SW1C in independent mode with one inductor The desired configuration is programmed by OTP by using SW1_CONFIG[1:0] bits in the register map Table 136. Extended page 1, page 106, as shown in Table 39. . 6.4.4.3.1 SW1A/B/C single phase In this configuration, all phases A, B, and C, are connected together to a single inductor, thus, providing up to 4.50 A current capability for high current applications. The feedback and all other controls are accomplished by use of pin SW1CFB and SW1C control registers, respectively. Figure 11 shows the connection for SW1A/B/C in single phase mode. During single phase mode operation, all three phases use the same configuration for frequency, phase, and DVS speed set in the SW1CCONF register. However, the same configuration settings for frequency, phase, and DVS speed setting on SW1AB registers should be used. The SW1FB pin should be left floating in this configuration. SW3A SW3A_PWRSTG[2:0] ISW3AMAX 0 0 1 40% 0.5 0 1 1 80% 1.0 1 0 1 60% 0.75 1 1 1 100% 1.25 SW3B SW3B_PWRSTG[2:0] ISW3BMAX 0 0 1 40% 0.5 0 1 1 80% 1.0 1 0 1 60% 0.75 1 1 1 100% 1.25 SW4 SW4_PWRSTG[2:0] ISW4MAX 0 0 1 50% 0.5 0 1 1 75% 0.75 1 0 1 75% 0.75 1 1 1 100% 1.0 Table 39. SW1 configuration SW1_CONFIG[1:0] Description 00 A/B/C single phase 01 A/B single phase C independent mode 10 A/B dual phase C independent mode 11 Reserved Table 38. Programmable current configuration (continued) Regulators Control bits % of power stages enabled Rated current (A) |
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