Standard Products Reference Design Sequenced Power-Up/Down with the Quad Voltage Supervisor October 2015 The most important thing we build is trust 1 Introduction Cobham Semiconductor Solutions, (formerly Aeroflex) Quad Voltage Supervisor finds use in voltage monitoring, voltage sequencing, and Fault Detection, Isolation and Recovery (FDIR) schemes. Voltage sequencing is particularly common for FPGA and ASIC applications which require a set order to power up the I/O, high-speed I/O and core supplies to prevent contention and high currents. For the same reasons that these applications have power up specifications, they generally require a power down sequence that inverts the order of power up. Current Quad Voltage Supervisors define an order for power up sequencing and maintain this same order during power down. This design reference discusses a method of using MSI logic with Single and Quad Channel Voltage Supervisors to create an intelligent power sequencer that brings power supplies down in the inverse order from power up. 2 Device Features and Demonstration Board The Intelligent Power Sequencer uses a Cobham Single Channel Voltage Supervisor (UT01VS33D) to monitor a systemregulated, 3.3V rail. Cobham MSI products (UT54ACTS02E, UT54ACTS08E) and a Quad Voltage Supervisor (UT04VS33P) create the sequencer. MSI Sequencing Logic 5v – 15v 3.3v Rail UT54ACTS02E UT54ACTS02E UT54ACTS02E 3.3v 3.3v PwrGd Voltage comparators in the Quad Supervisor generate voltage good enables (VOUTx) to sequence the series of regulators. The Quad Supervisor VOUTx signals serve as flags indicating that each monitored system voltage is within tolerance; 3.3V, 2.5V, 1.8V, and 1.2V in this application. The Quad Supervisors RESET/RESETb outputs provide final reset removals after all system voltages are within tolerance. UT54ACTS08E UT54ACTS02E VRG8662 UT01VS33D Sequenced Power Enables EN1 EN2 EN3 EN4 3.3v Rail VIN1 VRG VOUT1 2.5v Rail VIN2 VRG VOUT2 The Cobham Sequencer Demonstration Board provides hardware for demonstrating the sequencing capabilities. 1.8v Rail VRG VIN3 VOUT4 1.2v Rail VRG VOUT3 VIN4 RESET RESETB UT04VS33P Figure 1. Intelligent Power Sequencer Block Diagram 950017-001 Version 0.0.0 -1- Cobham Semiconductor Solutions Cobham.com/HiRel October 2015 Intelligent Power Sequencing Application Quad Voltage Supervisor Single Voltage Supervisor MSI LOGIC Figure 2. Demonstration Board Front (left) 3 Figure 3. Demonstration Board Back (right) Intelligent Power Sequencing Application The Intelligent Power Sequencer uses a Cobham Single Channel Voltage Supervisor (UT01VS33D) to monitor a system-regulated, 3.3V rail. This creates a System Power Good (3.3v PWRGD) used to start the sequencer. The MSI logic combines with the START switch to initiate power up. Voltage comparators in the Quad Supervisor (UT04VS33P), create a series of enables to start the monitored voltages and sequence them up in an order of VOUT1, VOUT2, VOUT3, and then VOUT4. The comparators in the Quad Supervisor verify each voltage rail is within tolerance before enabling the next rail. Removing START causes the Quad Supervisor and MSI to disable the voltage regulators in the inverse order of power-up. If PWRGD faults, the logic disables each voltage rail in reverse sequence to start up. The Quad Supervisor disables each power rail as the logic waterfall occurs. This shutdown can occur in less than 16uS. However, using a series resistor to drive a grounded capacitor and the enable signals on the Quad Supervisor provides adjustable timings for both the power up and power down sequences to meet timing requirements of the system. 950017-001 Version 0.0.0 -2- Cobham Semiconductor Solutions Cobham.com/HiRel October 2015 Conclusion Figure 4. MSI Logic Schematic 4 Conclusion The Cobham UT04VS33P Quad Supervisor uses MSI logic to sequence voltage rails in any order with adjustable delays for each rail. This design provides a solution to FPGA and ASIC sequenced power-up and power down requirements. The power down sequences quick, which allows for emergency shutdowns. However, if power-down delays are necessary, a simple R-C delay connected to the voltage supervisor enable pins is feasible. Please see our Build of Materials (BOM) and schematics for full design reference. 950017-001 Version 0.0.0 -3- Cobham Semiconductor Solutions Cobham.com/HiRel October 2015 Conclusion Table 1. Reference Design BOM FN Qty. Reference Designators Part Number 0 2 PWB 1 6 C1,C9,C11,C13,C TAJR104K020RNJ 15,C17 Alt 2 5 4 C2,C18,C21,C22, 6TPU10MSI C23 1 C3,C4,C5,C6 C7 Alt 5 11 2 4 C30,C31 D1,D2,D3,D4 3 Alt 9 6 1 11 4 R1,R2,R5,R6 5 13 1 3 1 Alt 950017-001 Version 0.0.0 DigiKey CAP,CER,0.01uF,50V,1%,08 805 05 C1825C225J5RACTU LTST-C171GKT STC02SYAN 1.14100.5030000 ERJ-6ENF1001V ERA-6AEB2102V R7,R10,R13 ERA-6AEB3571V CAP,CER,2.2uF,50V,5%,182 1825 5 ERA-6AEB1151V Kemet DigiKey Green_LED 805 Lite-On Inc DigiKey HEADER 2 2x1_header Sullins Connector DigiKey Solder_Banana_Jack_Singl ban_jack_solder_ KeystoneElectroni e 575-4 cs DigiKey Push_Button sw_racon8smd C&K Components DigiKey RES,1K,1%,0.125W,0805 805 Panasonic DigiKey RES,25K,0.05%,.25W,0805 805 Vishay Thin Film DigiKey RES,21K,0.1%,0.125W,080 805 5 Panasonic DigiKey RES,3.57K,0.1%,0.125W,0 805 805 P3.57KDACT-ND R8 Kemet DigiKey P21KDACT-ND Alt 15 445-7029-1-ND PLT0805-25KACT-ND Alt 14 TDK Corporation R3,R9,R12,R15,R PLT0805Z2502AST5 18 R4 Kemet C1608C0G1H680F080AA CAP,CER,68pF,50V,1%,060 603 3 P1.00KCCT-ND Alt Panasonic DigiKey CKN9363CT-ND Alt 12 CAP,CER,560pF,50V,1%,08 805 05 575-4K-ND PB1 AVX Corporation 478-6047-1-ND J4,J5,J6,J7,J8,J9 575-4 Alt Sierra Circuits DigiKey S9000-ND Alt 10 CAP,TANT,10uF,6.3V,20%,0 805 805 160-1423-1-ND J1,J2,J3 MFG DigiKey 399-10095-1-ND Alt 8 CAP,TANT,0.1uF,20V,10%,0 805 805 399-11161-1-ND Alt 7 08055A561FAT2A C8,C10,C12,C14, C0805C103F5GACTU C16,C24,C25,C2 6,C,27,C28,C29 Alt 6 4" x 4" P16224CT-ND Alt 4 PCB Board (Sierra) PKG 478-3286-1-ND Alt 3 Sequenced Power PCB Description Panasonic DigiKey RES,1.15K,0.1%,0.125W,0 805 805 P1.15KDACT-ND Panasonic DigiKey -4- Cobham Semiconductor Solutions Cobham.com/HiRel 1 October 2015 Table 1. (Continued) Reference Design BOM FN 16 Qty. 1 Reference Designators R11 ERA-6AEB1691V R14 ERA-6AEB2871V R16 ERA-6AEB4121V Alt 17 1 18 1 19 1 20 1 ERA-6AEB4751V R19 ERJ-3EKF1690V ERJ-3EKF1270V R21 ERJ-3EKF90R9V Alt 23 1 24 10 Alt 1 1 RES,4.75K,0.1%,0.125W,0 805 805 Panasonic DigiKey DigiKey RES,169,1%,0.1W,0603 603 RES,127,1%,0.1W,0603 603 RES,90.9,1%,0.1W,0603 603 Panasonic DigiKey Panasonic DigiKey RES,75,1%,0.1W,0603 603 RES,10K,1%,0.1W,0603 603 Panasonic DigiKey P10.0KHCT-ND SW1 Panasonic DigiKey P75.0HCT-ND Alt 26 ERJ-3EKF75R0V R24,R26,R28,R3 ERJ-3EKF1002V 0,R32,R34,R35,R 36,R37,R38 Alt 25 Panasonic P90.9HCT-ND R22 Panasonic DigiKey P127HCT-ND Alt Panasonic RES,4.12K,0.1%,0.125W,0 805 805 P169HCT-ND R20 MFG DigiKey RES,2.87K,0.1%,0.125W,0 805 805 P4.75KDACT-ND Alt 1 RES,1.69K,0.1%,0.125W,0 805 805 P4.12KDACT-ND R17 Alt 22 PKG P2.87KDACT-ND Alt 1 Description P1.69KDACT-ND Alt 21 Part Number Panasonic DigiKey 400BWMSP1R2BLKSM6Q Rocker Switch E sw_400bwm EG4336CT-ND E-Switch DigiKey U1 VRG8662 3_3_LDO VRG8662 Cobham/Aeroflex Cobham/Aeroflex 27 1 U2 UT01VS33D Volt_Super_Single cfp8p50mil 28 4 U3,U4,U5,U6 AP7173-SPG-13 AP7173_LDO soic8_therm_pad Diodes Inc. Alt AP7173-SPG-13DICT-ND DigiKey 29 4 U7,U8,U9,U10 UT54ACTS02E 30 1 U11 UT54ACTS08E MSI_Quad_AND cfp14p50mil Cobham/Aeroflex 31 1 U12 UT04VS33P Volt_Super_Quad cfp28p25mil Cobham/Aeroflex 950017-001 Version 0.0.0 MSI_Quad_NOR -5- cfp14p50mil Cobham/Aeroflex Cobham Semiconductor Solutions Cobham.com/HiRel October 2015 5 4 3 2 NOTICE TO ALL PERSONS RECEIVING THIS DRAWING D 1 REVISION BLOCK THIS DOCUMENT IS THE PROPERTY OF AEROFLEX COLORADO SPRINGS AND IS DELIVERED ON THE EXPRESS CONDITION THAT IT IS NOT TO BE DISCLOSED, REPRODUCED IN WHOLE OR IN PART, OR IS USED FOR MANUFACTURE FOR ANYONE OTHER THAN AEROFLEX WITHOUT ITS WRITTEN CONSENT; AND THAT NO RIGHT IS GRANTED TO DISCLOSE OR SO USE ANY INFORMATION CONTAINED IN SAID DOCUMENT. Date Sheet Approved 12/12/2014 <Date> <Date> <Date> <Date> <Date> <Date> <Date> <Date> <Date> N/A <Sheet> <Sheet> <Sheet> <Sheet> <Sheet> <Sheet> <Sheet> <Sheet> <Sheet> -<App> <App> <App> <App> <App> <App> <App> <App> <App> Change Summary Rev Initial Release <Change> <Change> <Change> <Change> <Change> <Change> <Change> <Change> <Change> 00 <Rev> <Rev> <Rev> <Rev> <Rev> <Rev> <Rev> <Rev> <Rev> D C C B B A A Cobham Hi-Rel 4350 Centennial Blvd. Colorado Springs, CO. 80907 Notes: Sequenced Power Supervisor Red text denotes layout instructions Green text denotes silkscreen markings Blue text denotes population options Size C Wednesday, December 17, 2014 5 950017-001 Version 0.0.0 4 3 -6- 2 CAGE Code 65342 Rev DWG NO <Doc> Scale 00 Sheet 1 of 5 1 Cobham Semiconductor Solutions Cobham.com/HiRel October 2015 Figure 5. System Block Diagram Table 2. Board Specifications Generic Specifications Board Dimensions 4" x 4" Board Maximum Weight NA Number of Layers: 4 Dielectric Material FR-4 Dielectric Thickness <8 mil Outer Layer Copper Weight 1oz Inner Layer Copper Weight 1oz Differential Line Spacing 5 mil Default Trace Width 5 mil Voltage Current (amps) Input 15 1 Internal Rail 1 3.3 1 Output 1 3.3 0.8 Output 2 2.5 0.8 Output 3 1.8 0.8 Output 4 1.2 0.8 Name Type Layer 1 Top Sig/Pwr Layer 2 GND 1 GND Layer 3 GND 2 GND Layer 4 BTM Sig/Pwr Voltage Rails Layer Definition 950017-001 Version 0.0.0 -7- Cobham Semiconductor Solutions Cobham.com/HiRel October 2015 Figure 6. Schematic - Input Power 950017-001 Version 0.0.0 -8- Cobham Semiconductor Solutions Cobham.com/HiRel October 2015 3_3_V 3_3_V U7 1 2 3 4 5 6 7 J2 HEADER 2 R6 14 13 12 11 10 9 8 Y1 VDD A1 Y4 B1 B4 Y2 A4 A2 Y3 B2 B3 VSS A3 Set_sr Start_b C9 Power_Good_b Reset_sr 0.1uF Set_sr Set_sr 1K ohm C8 2 1 Qb0 sr_Main Set_sr sr_Main Qb0 Reset_sr 0.01uF Output_En MSI_Quad_NOR 3_3_V J3 HEADER 2 R5 1K ohm 2 1 3_3_V SW1 1 U8 rs_1 sr_Main OUT_2 rs_2 sr_Main OUT_3 1 2 3 4 5 6 7 Y1 VDD A1 Y4 B1 B4 Y2 A4 A2 Y3 B2 B3 VSS A3 14 13 12 11 10 9 8 3 Start_b Start rs_3 OUT_4 sr_Main C31 C11 C10 Start Vin1 Vout 2 Vin2 Rocker Switch 2.2uF 0.01uF 0.1uF MSI_Quad_NOR 3_3_V U11 SR1 Output_En EN1 SR2 Output_En EN2 3_3_V U9 Qb1 SR1 sr_Main SR1 Qb1 rs_1 1 2 3 4 5 6 7 Y1 VDD A1 Y4 B1 B4 Y2 A4 A2 Y3 B2 B3 VSS A3 14 13 12 11 10 9 8 SR2 rs_2 C13 Qb2 Qb2 0.1uF OUT_1 SR2 1 2 3 4 5 6 7 A1 B1 Y1 A2 B2 Y2 VSS VDD B4 A4 Y4 B3 A3 Y3 14 13 12 11 10 9 8 Output_En SR4 EN3 Output_En SR3 EN4 C17 0.1uF C16 0.01uF MSI_Quad_AND C12 0.01uF MSI_Quad_NOR 3_3_V U10 Qb3 SR3 OUT_2 SR3 Qb3 rs_3 1 2 3 4 5 6 7 Y1 VDD A1 Y4 B1 B4 Y2 A4 A2 Y3 B2 B3 VSS A3 14 13 12 11 10 9 8 SR4 Qb0 C15 Qb4 Qb4 OUT_3 0.1uF SR4 Cobham Hi-Rel 4350 Centennial Blvd. Colorado Springs, CO. 80907 C14 0.01uF MSI Logic MSI_Quad_NOR Size B Wednesday December 17 2014 Scale CAGE Code 65342 Rev DWG NO <Doc> 0 Sheet 4 f 5 Figure 7. Schematic - MSI Logic 950017-001 Version 0.0.0 -9- Cobham Semiconductor Solutions Cobham.com/HiRel October 2015 3_3_V R9 1 25K ohm R8 560pF 1 4.12K ohm D1 Green_LED EN4 Vout FB SS GND TH AP7173_LDO C6 R17 2_5_LDO_V 1 25K ohm OUT_1 OUT_2 OUT_3 R34 10K ohm R32 10K ohm OUT_4 Reset Reset_b C25 C26 C29 C27 C28 0.01uF 0.01uF 0.01uF 0.01uF 0.01uF 0.01uF Sequenced Power Supervisor 3.3V 2.5V 1.8V 1.5V D4 Green_LED 1.5V Power J7 3_3_V U12 OUT_1 CDLY1 OUT_3 CDLY3 OUT_4 Reset_b Reset OUT_2 CDLY2 OUT_4 CDLY4 C7 68pF 10uF C21 J8 1_8_LDO_V R15 1 R35 Volt_Super_Quad 10uF 10uF C22 C23 C18 10uF 10K ohm 28 27 26 25 24 23 22 21 20 19 18 17 16 15 CDLY2 CDLY3 R38 2.5V Power VDD VOUT1 CDLY1 VOUT3 CDLY3 MRB INV RESET_B CRESET RESET VOUT2 CDLY2 VOUT4 CDLY4 10K ohm D2 Green_LED EN1 VIN1 EN3 VIN3 NC OVSH TH1 TH0 TOL EN2 VIN2 EN4 VIN4 VSS R37 1_5_LDO_V 1 2 3 EN3 4 5 6 7 8 9 10 EN2 11 12 EN4 13 14 EN1 10K ohm 2_5_LDO_V 127 ohm 3.57K ohm 1_8_LDO_V R36 R11 560pF 3_3_V R30 10K ohm R28 10K ohm C24 10K ohm C4 R20 Vout FB SS GND TH AP7173_LDO 8 7 6 5 9 R10 Vin PG Vcc EN R26 10K ohm 1 banana_jack 1.69K ohm EN2 R24 10K ohm 3_3_LDO_V U4 1 2 3 4 J6 banana_jack R16 Vin PG Vcc EN 8 7 6 5 9 3.3V Power R12 3_3_V 3_3_V 1 75 ohm 169 ohm U6 1 2 3 4 560pF 3_3_V 3_3_V 3_3_V R22 C3 3.57K ohm R7 Vout FB SS GND TH AP7173_LDO R18 R19 EN1 8 7 6 5 9 Vin PG Vcc EN 1_5_LDO_V 3_3_V 25K ohm 1.15K ohm U3 1 2 3 4 1 banana_jack 4.75K ohm 3_3_V 3_3_V J5 3_3_LDO_V CDLY4 CDLY1 1 25K ohm EN3 C5 R14 560pF 90.9 ohm 3.57K ohm 8 7 6 5 9 R21 Vout FB SS GND TH AP7173_LDO R13 Vin PG Vcc EN 2.87K ohm U5 1 2 3 4 banana_jack D3 Green_LED Cobham Hi-Rel 4350 Centennial Blvd. Colorado Springs, CO. 80907 1.8V Power O t tP Figure 8. Schematic - Output Power 950017-001 Version 0.0.0 - 10 - Cobham Semiconductor Solutions Cobham.com/HiRel October 2015 This product is controlled for export under the U.S. Department of Commerce (DoC). A license may be required prior to the export of this product from the United States. Cobham Semiconductor Solutions 4350 Centennial Blvd Colorado Springs, CO 80907 E: [email protected] T: 800 645 8862 Aeroflex Colorado Springs Inc., dbaCobham Semiconductor Solutions, reserves the right to make changes to any products and services described herein at any time without notice. Consult Aeroflex or an authorized sales representative to verify that the information in this data sheet is current before using this product. Aeroflex does not assume any responsibility or liability arising out of the application or use of any product or service described herein, except as expressly agreed to in writing by Aeroflex; nor does the purchase, lease, or use of a product or service from Aeroflex convey a license under any patent rights, copyrights, trademark rights, or any other of the intellectual rights of Aeroflex or of third parties. 950017-001 Version 0.0.0 - 11 - Cobham Semiconductor Solutions Cobhan.com/HiRel