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ADP5054 Arkusz danych(PDF) 4 Page - Analog Devices |
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ADP5054 Arkusz danych(HTML) 4 Page - Analog Devices |
4 / 37 page Data Sheet ADP5053 Rev. B | Page 3 of 36 DETAILED FUNCTIONAL BLOCK DIAGRAM Q1 QDG1 UVLO1 PVIN1 SW1 BST1 VREG VREG DRIVER DRIVER PGND DL1 CONTROL LOGIC AND MOSFET DRIVER WITH ANTICROSS PROTECTION CONTROL LOGIC AND MOSFET DRIVER WITH ANTICROSS PROTECTION EN1 0.8V 1MΩ HICCUP AND LATCH-OFF OCP COMP1 FB1 0.8V CLK1 SLOPE COMP CLK1 0.72V PWRGD1 ZERO CROSS CURRENT-LIMIT SELECTION FREQUENCY FOLDBACK + – + – + – – + + – + – + – CHANNEL 1 BUCK REGULATOR DUPLICATE CHANNEL 1 CHANNEL 2 BUCK REGULATOR CURRENT BALANCE EN2 COMP2 FB2 DL2 PVIN2 SW2 BST2 VID1 0.88V OVP LATCH-OFF EA1 CMP1 RT OSCILLATOR SYNC/MODE SOFT START DECODER SS12 SS34 VDD VREG INTERNAL REGULATOR PVIN1 VREG PWRGD HOUSE KEEPING LOGIC UVLO3 PVIN3 SW3 BST3 VREG VREG DRIVER Q3 Q4 DRIVER PGND3 EN3 COMP3 FB3 CHANNEL 3 BUCK REGULATOR DUPLICATE CHANNEL 3 CHANNEL 4 BUCK REGULATOR EN4 COMP4 FB4 PGND4 PVIN4 SW4 BST4 ACS1 + – + – ACS3 WDI RESET GENERATOR 0.5V SUPERVISORY 0.8V 1MΩ HICCUP AND LATCH-OFF OCP 0.8V CLK3 SLOPE COMP CLK3 0.72V PWRGD3 FREQUENCY FOLDBACK + – + – + – – + + – + – VID3 0.88V OVP LATCH-OFF EA3 CMP3 ZERO CROSS VTH DEBOUNCE WATCHDOG DETECTOR MR RSTO Figure 2. |
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