S6AP413A 2 4ch DC/DC Converter with I C Interface and Internal SW FETs S6AP413A contains 3ch buck DC/DC converter and 1ch buck-boost DC/DC converter. S6AP413A can supply the main power line in several systems by using only its chip. The current mode control is adopted for the DC/DC converter, and it is possible to use the small chip inductor with the high switching frequency operation which contains internal switching FETs. S6AP413A contains the output setting resistor and the phase compensation circuit, and contributes to reduce the number of external components and its mount area. Also it contains the CTL input pin which can control the ON/OFF for each DC/DC converter, the Power Good signal 2 output pin and I C communication interface, therefore it is easy to design the power supply sequence. It is possible to tune in the 2 output voltage exactly using the I C communication. Features Operating input voltage range: 2.5V to 5.5V (Maximum rating: 6.5V) Output voltage setting range: DD1*:0.7V to 1.32V (20mV/step) DD2*:1.2V to 1.95V (50mV/step) DD3*:2.8Vto 3.5V (100mV/step) DD4*:0.7V to 1.32V (20mV/step) Maximum output current: DD1:2A, DD2:1.2A, DD3:0.6A, DD4:2A Internal switching FETs, output voltage setting resistor, phase compensation circuit and output discharge resistor (all DC/DC converters) Buck-boost DC/DC converter is seamless to change operation mode Soft start time setting range: 1 ms to 16 ms (approximately 1ms/step) Switching frequency for the DC/DC converter: 3 MHz 2 Communication interface: I C (ON/OFF, Output voltage, Soft start time) Internal PFM/PWM auto switching mode Each DC/DC converter Power Good function (open drain) Several protection functions: Under voltage lockout (UVLO), Over current protection (OCP), Thermal shut down (TSD) Small package: QFN32 (5mm 5mm 0.71mm, 0.5mm pitch) *: DD1, DD2, DD3, and DD4: DC/DC converter blocks 1,2,3,4 Applications Network equipment, Factory automation, Security system, Surveillance camera, Electrical music instrument, Multi-function printer, Scanner, Printer, Copy machine, Home appliances, Data storage (HDD, SSD), Mobile equipment for Li+ battery (1 cell) Cypress Semiconductor Corporation 198 Champion Court San Jose, CA 95134-1709 408-943-2600 Document Number: 002-08448 Rev.*A Revised February 26, 2016 S6AP413A Contents 1. Application Circuit Example ............................................................................................................................................ 4 2. Recommended Application Specification ....................................................................................................................... 5 3. Pin Configuration .............................................................................................................................................................. 8 4. Pin Descriptions ................................................................................................................................................................ 9 5. Block Diagram ................................................................................................................................................................. 10 6. Absolute Maximum Ratings ........................................................................................................................................... 11 7. Recommended Operating Conditions ........................................................................................................................... 12 8. Electrical Characteristics ............................................................................................................................................... 13 8.1 Reference Control Block .............................................................................................................................................. 13 8.2 DD1 ............................................................................................................................................................................. 14 8.3 DD2 ............................................................................................................................................................................. 15 8.4 DD3 ............................................................................................................................................................................. 16 8.5 DD4 ............................................................................................................................................................................. 17 8.6 Digital Block ................................................................................................................................................................. 18 9. Operation Mode List ....................................................................................................................................................... 19 10. State Transition Diagram ................................................................................................................................................ 20 11. Turning ON and OFF Sequence (AVCC=CTLMAIN, CTL1, CTL2, CTL3, CTL4) .......................................................... 21 12. Turning ON and OFF Sequence (AVCC CTLMAINCTL1CTL2 CTL3 CTL4) ............................................... 22 2 13. Turning ON and OFF Sequence (AVCCCTLMAINI C) ........................................................................................... 23 14. CTL Pin Threshold Voltage ............................................................................................................................................ 24 15. Protection Operation Sequence..................................................................................................................................... 25 16. Operation Condition, Stop Circuit and Release Condition for Protection Circuit ..................................................... 26 17. DD Soft Start Operation .................................................................................................................................................. 27 18. Discharge Operation ....................................................................................................................................................... 28 19. PG Function ..................................................................................................................................................................... 29 2 20. I CInterface ...................................................................................................................................................................... 30 2 20.1 Structure of I CInterface .............................................................................................................................................. 30 20.2 Definition of Signal Lines ............................................................................................................................................. 30 20.3 Validity of Data ............................................................................................................................................................ 31 20.4 Definition of Start and Stop Condition.......................................................................................................................... 31 20.5 ACK Signal .................................................................................................................................................................. 32 2 20.6 I C Interface Input Timing ............................................................................................................................................ 33 20.7 Slave Address ............................................................................................................................................................. 34 2 20.8 Bit Structure of Data on I C Interface .......................................................................................................................... 35 2 21. Structure of I C Interface and Data ................................................................................................................................ 37 21.1 About DD1, DD4Output Voltage Setting ...................................................................................................................... 38 21.2 About DD2 Output Voltage Setting .............................................................................................................................. 39 21.3 About DD3 Output Voltage Setting .............................................................................................................................. 40 21.4 About Soft Start Time .................................................................................................................................................. 41 21.5 DC/DC Operation Mode .............................................................................................................................................. 42 21.6 ON/OFF for DC/DC ..................................................................................................................................................... 43 21.7 About Error Monitor ..................................................................................................................................................... 44 21.8 About Power Good Monitor ......................................................................................................................................... 45 22. I/O Pin Equivalent Circuit Diagram ................................................................................................................................ 46 23. Measurement Circuit for Characteristics of General Operation ................................................................................. 49 24. Reference Data ................................................................................................................................................................ 51 25. Ordering Information ...................................................................................................................................................... 63 26. Preset Code List .............................................................................................................................................................. 64 Document Number: 002-08448 Rev.*A Page 2 of 69