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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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MFS5600AMBAFES датащи(PDF) 33 Page - NXP Semiconductors |
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MFS5600AMBAFES датащи(HTML) 33 Page - NXP Semiconductors |
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33 / 118 page  NXP Semiconductors FS5600 Automotive buck regulator and controller with voltage monitors and watchdog timer 14 FS5600 clock management The clock management system provides a top-level management control scheme of internal clock and external synchronization intended to be used primarily for the switching regulators. The clock management system incorporates various sub-blocks: • Low-power 100 kHz clock • Internal high frequency clock with programmable frequency • Phase-Locked Loop (PLL) • A digital clock management interface is in-charge of supporting interaction among these blocks. Figure 11 shows a high-level block diagram of the clock management system. aaa-037157 Internal Oscillator (Spread spectrum, Freq tuning) Divider /1 (OTP_FSYNC_RANGE = 1) /6 (OTP_FSYNC_RANGE = 0) Divider 2 /48 (OTP_CLK2_DIV = 0) /64 (OTP_CLK2_DIV = 1) SYNCIN Divider /48 OSC_MAIN/48 CLOCK monitoring SW1 PLL x 48 out in enable CLK 0 1 CLK_FIN_DIV EXT_FIN_SEL Divider 1 /8 (OTP_CLK1_DIV = 0) /9 (OTP_CLK1_DIV = 1) CLK1 CLK1 CLK2 SYNCOUT 0 1 0 1 CLK2 OTP_SW1_CLKSEL OTP_SW2_CLKSEL SW2 CLK1 0 1 CLK2 Figure 11. Clock management system high-level block diagram 14.1 FS5600 clock electrical characteristics All parameters are specified at Tj = –40 °C to 150 °C, VIN= 12 V, VCC = 5V, unless otherwise noted. Typical parameters are specified at VIN = 12 V, Tj = 25 °C unless otherwise noted. Parameter Symbol Min Typ Max Unit High Frequency clock accuracy (20 MHz setting) F20 MHz 18.8 20 21.2 MHz Spread Spectrum Frequency modulation frequency (FSS_ FMOD = 0) Fss_mod_f — 23.5 — kHz Spread Spectrum Frequency modulation frequency (FSS_ FMOD = 1) Fss_mod_f — 94 — kHz Spread Spectrum modulation range Fss_mod_range — 5 — % SYNCIN input falling threshold VIL_SYNCIN 0.35 — — V SYNCIN input rising threshold VIH_SYNCIN — — 1.25 V Table 27. FS5600 clock electrical characteristics FS5600 All information provided in this document is subject to legal disclaimers. © 2024 NXP B.V. All rights reserved. Product data sheet Rev. 4 — 29 April 2024 33 / 118 |
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