M3 ATX hardware/firmware changes list: 11/22/2006 change the V(In) holes to 2.15mm (per UEC request) 11/22/2006 change vias position, from Q1,Q2,Q3,Q4 gate drive pins moved beside the component pads (per UEC request) 11/22/2006 TVS diode moved after the input coil 11/22/2006 added R38 10K, size 0603 - RESISTOR,CHIP TF,1/10W,5%,10K OHM,0603 11/22/2006 added C49 10nF, size 0603 - CAP.CHIP 0603.CERAMIC.10%.X7R 25V.0.01UF 11/22/2006 changed value C46 from 0.1uF to 10nF, size 0603 - CAP.CHIP 0603.CERAMIC.10%.X7R 25V.0.01UF 11/22/2006 added C48 10uF, size 1206 - CAP,1206,CERAMIC,10%,25V,X5R,10UF 11/22/2006 Q5 twisted with 180 degrees bot keep in exactly the same palce. 11/22/2006 changed R19 from 3.24K to 2K, size 0603 - RESISTOR.CHIP TF.1/10W.1%.2K OHM.0603 11/22/2006 changed R20 from 3.24K to 2K, size 0603 - RESISTOR.CHIP TF.1/10W.1%.2K OHM.0603 11/22/2006 changed R27 from 10K to 1K, size 0603 - RESISTOR,CHIP TF,1/10W,5%,1K OHM,0603 11/24/2006 removed R12, 470ohm, size 0603 - RESISTOR,CHIP TF,1/10W,5%,470 OHM,0603 07/02/2007 added J5, ferulle pad, for IGNITION signal wire, same size ferulle as used for HDD wire harness 07/02/2007 added R41, 0Ohm, size 0603 - RESISTOR,CHIP TF,1/10W,5%,0 OHM,0603 07/02/2007 removed pin 11 from J6 DIL Header 2mm pitch forming an insertion KEY on header 07/02/2007 removed pin 8 from J4 inter board header 07/02/2007 changed J4 8 pin header, 2.54mm pitch, to 7 pin header, 2.54mm pitch 04/18/2007 changed R10 from 10K to 50K, size 0603 - RESISTOR.CHIP TF.1/10W.1%.2K OHM.0603 04/18/2007 changed R19 from 2K to 10K, size 0603 - RESISTOR.CHIP TF.1/10W.1%.2K OHM.060304/18/2007 changed R11 from 10K to 50K, size 0603 - RESISTOR.CHIP TF.1/10W.1%.2K OHM.0603 04/18/2007 changed R20 from 2K to 10K, size 0603 - RESISTOR.CHIP TF.1/10W.1%.2K OHM.0603 09/20/2007 changed firmware part: in the version 0.45 - the THUMP signal is now initially turned OFF and turned ON AFTER the rails are started in the version 0.44 the THUMP was initially started ON immediately when the VIN was applied 12/02/2008 changed firmware part: in the version 0.47: - IGNITION is now dynamically supressed, filtering time is now 60 seconds - "THUMP sometimes goes crazy" bug is solved - mode 4 (P4) OFF Delay timeout is changed to 2 hours, Hard OFF timeout is changed to 2 hours - version string "M','3',' ','A','T','X', ' ', '2','0','0','8', ' ', '0', '.', '4', '7' 04/18/2008 changed firmware part: in the version 0.48: - the dynamically IGNITION supression function was changed because a bug in the version 0.47 - PWRSW is switched ON after 10ms the 5VSB was started up.(was 0 ms) - PWRSW ON Delay variable and dynamically IGN suppression variable could be read / write via serial link - version string 'M','3',' ','A','T','X', ' ', '2','0','0','8', ' ', '0', '.', '4', '8' 06/05/2008 changed firmware part: in the version 0.49: - in DUMB mode now we have UPS mode implemented, see http://mini-box.com/site/resources/pdf/UPS-mode- functionality.pdf - I UPS mode the start condition are VIN >= 13V, IGN >=11.75V, the stop condition is IGN < 11.2V more than 60sec. - version string 'M','3',' ','A','T','X', ' ', '2','0','0','8', ' ', '0', '.', '4', '9' 11/11/2008 added C50 100nF, size 0603 - CAP.CHIP 0603.CERAMIC.10%.X7R 25V.0.1UF 11/11/2008 MCU moved down a bit to the bottom side of the pcb 11/11/2008 some VIA's rearrangement, Gate Driving lines rearranged for Q1, Q2, Q3, Q4 11/11/2008 added VIA's to V3, V5, V12, VCC ATX conn pads, IGN line moved to bottom layer 11/11/2008 removed ground loop between C13, C2 and C1, C4 11/11/2008 other minor rearrangements of routes on Inner1 and Inner2 layers 02/07/2009 changed firmware part: in the version 0.50: - INIT_DELAY_TIMER could be set to 0 - the HIGH VIN threshold is no longer active - VIN and IGN offsets were modified according to the 49.9K/10K divider in order to obtain the 11.2V as startup condition for VIN - version string 'M','3',' ','A','T','X', ' ', '2','0','0','9', ' ', '0', '.', '5', '0' 10/11/2012 manufacturer has changed inductor color from Blue to Black, P/N affected is SSC-1045D2-R62 06/25//2013 Extending availability for the next 5 years 03/10//2016 Extending availability for the next 5 years 10/10//2020 Extending availability for the next 5 years