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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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MMPF0200 датащи(PDF) 48 Page - NXP Semiconductors |
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MMPF0200 датащи(HTML) 48 Page - NXP Semiconductors |
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48 / 114 page  48 NXP Semiconductors PF0200 FUNCTIONAL BLOCK REQUIREMENTS AND BEHAVIORS Figure 14. SW2 efficiency waveforms 6.4.4.5 SW3A/B SW3A/B are 1.25 to 2.5 A rated buck regulators, depending on the configuration. Table 28 describes the available switching modes and Table 29 show the actual configuration options for the SW3xMODE[3:0] bits. SW3A/B can be configured in various phasing schemes, depending on the desired cost/performance trade-offs. The following configurations are available: • A single phase • Independent regulators The desired configuration is programmed in OTP by using the SW3_CONFIG[1:0] bits.Table 57 shows the options for the SW3CFG[1:0] bits. SW3A/B single phase In this configuration, SW3ALX and SW3BLX are connected in single phase with a single inductor a shown in Figure 15. This configuration reduces cost and component count. Feedback is taken from the SW3AFB pin and the SW3BFB pin must be left open. Although control is from SW3A, registers of both regulators, SW3A and SW3B, must be identically set. Table 57. SW3 Configuration SW3_CONFIG[1:0] Description 00 A/B Single Phase 01 A/B Single Phase 10 Reserved 11 A/B Independent 0 10 20 30 40 50 60 70 80 90 100 0.1 1 10 100 1000 Ef fi ci e n cy (% ) Load Current (mA) PFM - Vout = 3.15V APS - Vout = 3.15V PWM - Vout = 3.15V |
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