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Kintex-7 Series Power Module

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描述

This fully tested reference design provides a complete power-supply solution for powering a typical Xilinx Kintex-7 series field-programmable gate array (FPGA) using Maxim's power-supply solutions. The Kintex-7 (7K325T FPGA application) requires eight distinct power supply rails as follows:

Design Description
FPGA Rail Input Voltage Output Voltage Current Maxim Solution
VCCINT, VCCBRAM 12V 1V 6A MAX8686
VCCAUX, VCCAUX_IO, VCCO, VCCADC, MGTAVCCAUX 12V 1.8V 6A MAX8686
MGTAVCC 12V 1V 6A MAX8686
VCC0 12V 3.3V 8A MAX8686
VCC0 12V 2.5V 8A MAX8686
VCC0 12V 1.5V/1.35V 4A MAX8654
MGTAVTT, MGTAVTTRCAL 12V 1.2V 4A MAX8654
VCCAUX_IO 12V 2V 2A MAX15041

This reference design provides the required eight power rails using five MAX8686 synchronous pulse-width modulation (PWM) step-down regulators, two MAX8654 high-efficiency switching regulators, and the MAX15041 low-cost synchronous DC-DC converter with internal switches. These devices can be sequenced at power-up, as indicated in Figure 1.

Figure 1. Block diagram of the Kintex 7-power module.
Figure 1. Block diagram of the Kintex 7-power module.

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设计,建造,测试

图中的电路板已完全组装并经过测试。

 

细节部分

细节部分

This fully tested reference design provides a complete power-supply solution for powering a typical Xilinx Kintex-7 series field-programmable gate array (FPGA) using Maxim's power-supply solutions. The Kintex-7 (7K325T FPGA application) requires eight distinct power supply rails as follows:

Design Description
FPGA Rail Input Voltage Output Voltage Current Maxim Solution
VCCINT, VCCBRAM 12V 1V 6A MAX8686
VCCAUX, VCCAUX_IO, VCCO, VCCADC, MGTAVCCAUX 12V 1.8V 6A MAX8686
MGTAVCC 12V 1V 6A MAX8686
VCC0 12V 3.3V 8A MAX8686
VCC0 12V 2.5V 8A MAX8686
VCC0 12V 1.5V/1.35V 4A MAX8654
MGTAVTT, MGTAVTTRCAL 12V 1.2V 4A MAX8654
VCCAUX_IO 12V 2V 2A MAX15041

This reference design provides the required eight power rails using five MAX8686 synchronous pulse-width modulation (PWM) step-down regulators, two MAX8654 high-efficiency switching regulators, and the MAX15041 low-cost synchronous DC-DC converter with internal switches. These devices can be sequenced at power-up, as indicated in Figure 1.

Figure 1. Block diagram of the Kintex 7-power module.
Figure 1. Block diagram of the Kintex 7-power module.

These point-of-load (POL) regulators were chosen for this design due to their accuracy, small size, and ease of use. The MAX8686 monolithic synchronous step-down converter is capable of providing up to 25A with 1% accurate internal referencevoltage from a 6mm x 6mm package. The MAX8654 monolithic synchronous step-down converter can provide up to 8A with very low on-resistance internal MOSFETs. The MAX15041 monolithic synchronous step-down converter is capable of providing up to 3A from a 3mm x 3mm package.

Detailed schematics for each POL are shown below in Figures 2 through 9, and the complete bill of materials (BOM) is included at the end of this document. This power module can be purchased from Avnet.


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Figure 2. The MAX8686 is used to supply 1V/6A for VCCINT and VCCBRAM.


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 (PDF, 256kB)
Figure 3. The MAX8686 supplies 1.8V/6A for VCCAUX, VCCAUX_IO, VCCO, VCCADC, and MGTAVCCAUX.


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 (PDF, 270kB)
Figure 4. The MAX8686 is used to supply 3.3V/8A for VCCO.


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Figure 5. The MAX8686 supplies 1V/6A for MGTAVCC.


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Figure 6. The MAX8686 is used to supply 2.5V/8A for VCCO.

Figure 7. The MAX8654 is used to supply 1.5V or 1.35V at 4A for VCCO.
More detailed image.
 (PDF, 259kB)

Figure 7. The MAX8654 is used to supply 1.5V or 1.35V at 4A for VCCO.


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 (PDF, 255kB)
Figure 8. The MAX8654 is used to supply 1.2V/4A for MGTAVTT and MGTAVTTRCAL.


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 (PDF, 235kB)
Figure 9. The MAX15041 is used to supply 2V/2A for VCCAUX_IO.

Table 1. Bill of Materials (BOM)

Item Qty Reference Designator Description Mfg Part Number Value Footprint
1 3 C1, C2, C3 16V, 20% Cornell Dubilier AVES107M16D16T-F 100µF SMD 6.3mm
Dia. x 5.3mm
L x 6.6mm H
2 16 C101, C114, C201, C214, C301, C314, C401, C414, C501, C514, C606, C614, C706, C714, C806, C808 25V, X7R, 125°C Murata GRM31CR71E106MA12L 10µF 1206
3 8 C102, C202, C302, C402, C502, C617, C717, C809 25V, X7R, 125°C Murata GRM188R71E104KA01D 100n (0.1µF) 0603
4 13 C103, C110, C203, C210, C303, C310, C403, C410, C503, C510, C609, C709, C804 16V, X5R, 85°C Murata GRM188R61C105KA93D 1µF 0603
5 8 C113, C213, C313, C413, C511, C613, C713, C811 1µF, 16V, X5R, 85°C Murata GRM188R61C105KA93D DNP 0603
6 8 C105, C205, C305, C405, C505, C610, C710, C812 50V, B, 85°C Murata GRM188B11H471KA01D 470pF 0603
7 3 C107, C207, C407 16V, X7R, 125°C Vishay VJ0603Y682KXJCW1BC 6.8nF 0603
8 13 C111, C112, C211, C212, C311, C312, C411, C412, C512, C513, C611, C711, C807 6.3V, X6S, 105°C Murata GRM32EC80J107ME20L 100µF 1210
9 16 C115, C116, C215, C315, C316, C515, C516, C612, C615, C616, C712, C715, C716, C810, C815, C816 100µF, 6.3V, X6S, 105°C Murata GRM32EC80J107ME20L DNP 1210
10 2 C306, C506 16V, X7R, 125°C Murata GRM188R71C474KA88D 470nF (0.47µF) 0603
11 3 C307, C507, C802 16V, X7R, 125°C Vishay VJ0603Y153KXJCW1BC 15nF 0603
12 3 C308, C508, (R308) 50V, C0G, 125°C TDK CGA3E2C0G1H181J 180pF 0603
13 8 C317, C417, C108, C117, C208, C217, C408, C517 16V, X7R, 125°C Vishay/Vitramon VJ0603Y101KXJCW1BC 100pF 0603
14 17 C601, C608, C701, C708, C106, C109, C206, C209, C309, C406, C409, C509, C104, C204, C304, C404, C504 16V, X7R, 125°C TDK CGA3E2X7R1C224K 220nF (0.22µF) 0603
15 2 C602, C702 16V, X7R, 125°C AVX 0603YC681KAT2A 680pF (0.68nF) 0603
16 2 C603, C703 50V, X7R, 125°C Vishay VJ0603Y272KXACW1BC 2.7nF 0603
17 2 C604, C704 25V, X5R, 85°C TDK C2012X5R1E225KT 2.2µF 0805
18 2 C605, C705 50V, C0G, 125°C Xicon 140-CC504N390J-RC 39pF 0603
19 1 C607 10V, X7R, 125C TDK C1608X7R1A334KT 330nF (0.33µF) 0603
20 1 C707 25V, X7R, 125°C TDK CGA3E2X7R1E154K 150nF 0603
21 1 C801 25V, X7R, 125°C Murata GRM188R71E103KA01D 10nF 0603
22 1 C803 50V, C0G, 125°C Vishay VJ0603A820JXACW1BC 82pF 0603
23 1 C805 16V, X7R, 125°C Murata GRM188R71C823KA01D 82nF (0.082µF) 0603
24 1 D301 VDZT2R7.5B, 7.5V ROHM VDZT2R7.5B DNP VMD-2
25 1 D801 Schottky, 20V, 1A ON NSR0320MW2T1G NSR0320 SOD-323
26 1 J1 Power Header, 10-Pin Samtec HPM-10-05-T-S Header 10 TH
27 1 J2 Power Header, 8-Pin Samtec HPM-08-05-T-S Header 8 TH
28 1 J3 Header, 10-Pin Samtec FW-05-05-F-D-361-085 Header 5X2 SMD
29 1 JP1-A JUMPER SOCKET FCI 65474-004LF Shorting 2.5mm Socket
30 1 JP1 BergStik 2.5mm Header FCI 68000-124HLF BergStik TH
31 2 L101, L401 13.3A, LowDCR - 5.9 Pulse PG0642.152NL 1.2µH Custom
32 1 L201 12A, Low DCR - 5.9mΩ Vishay/Dale IHLP4040DZER2R2M01 2.2µH Custom
33 1 L301 15A, 4.5mΩ Coiltronics DR125-2R2-R 2.2µH Custom
34 1 L501 18.3A, 2.9mΩ Coiltronics DR125-1R5-R 1.5µH Custom
35 2 L601, L701 5.2A, 20mΩ TDK VLP8040T-3R3N 3.3µH Custom
36 1 L801 3.2A, 38mΩ TDK VLP8040T-100M 10µH Custom
37 1 Q301 SIA419DJ MOSFETp-CH 20V 12A Vishay/Siliconix   DNP SC70-6
38 18 R101, R102, R113, R201 1%, 0.1W, 50V, Thick Bourns CR0603-FX-10R0GLF 10Ω 0603
39 2 R617, R817 10Ω, 1%, 0.1W, 50V Bourns CR0603-FX10R0GLF DNP 0603
40 10 R103, R203, R303, R403 1%, 0.1W, 50V, Thick Bourns CR0603-FX1002HLF 10kΩ 0603
41 4 R104, R204, R304, R404 1%, 0.1W, 50V, Thick film Bourns CR0603FX-2743ELF 274kΩ 0603
42 1 R405 0.1%, 1/16W, 75V, Thin film Susumu RG1608P-2323-B-T5 232kΩ 0603
43 1 R105 0.1%, 1/16W, 75V Susumu RG1608P-2373-B-T5 237kΩ 603
44 4 R106, R206, R406, R506 0.1%, 0.1W, 50V, Thin Bourns CRT0603-BY-1003ELF 100kΩ 0603
45 2 R107, R407 1%, 0.1W, 75V, Thick film Panasonic ERJ-3EKF7501V 7.5kΩ 0603
46 5 R108, R208, R308, R408, R508 1%, 0.1W, 50V, Thick film Bourns CR0603-FX-1743ELF 174kΩ 0603
47 2 R109, R409 1%, 0.1W, 75V, Thick film Panasonic ERJ-3EKF8660V 866Ω 0603
48 5 R110, R210, R310, R410, R510 1%, 0.1W, 50V, Thick film KOA Speer RK73H1JTTD4R70F 4.7Ω 0603
49 2 R111, R411 1%, 0.1W, 50V, Thick film Bourns CR0603-FX-2150ELF 215Ω 0603
50 8 R112, R212, R312, R412, R512, R614, R713, R806 1%, 0.1W, 50V, Thick film Vishay/Dale CRCW060350R0FKEA 50Ω 0603
51 4 R214, R807, R808, R809 Zero ohms jumper, 1A, 155°C KOA Speer RS0603FR-070RL 0603
52 16 R115, R116, R215, R216, R315, R316, R415, R416, R515, R516, R615, R616, R715, R716, R815, R816 Zero ohms jumper, 2A, 155°C KOA Speer RK73Z2BTTD 1206
53 1 R205 0.1%, 0.1W, 75V, Thin film Vishay TNPW060382K5BEEA 82.5kΩ 0603
54 1 R207 1%, 0.1W, 75V, Thick film Panasonic ERJ-3EKF6191V 6.19kΩ 0603
55 2 R209, R511 1%, 0.1W, 75V, Thick film Panasonic ERJ-3EKF4750V 475Ω 0603
56 1 R211 1%, 0.1W, 50V, Thick Bourns CR0603FX-2940ELF 294Ω 0603
57 1 R307 1%, 0.1W, 75V, Thick film Panasonic 667-ERJ-3EKF4021V 4.02kΩ 0603
58 2 R309, R802 1%, 0.1W, 50V, Thick film Bourns CR0603FX-5231ELF 5.23kΩ 0603
59 1 R311 1%, 0.1W, 50V, Thick film Bourns CR0603FX-5900ELF 590Ω 0603
60 1 R317 22.1kΩ, 1%, 0.1W, 50V, Thick film Panasonic ERJ-3EKF2212V DNP 0603
61 1 R318 14.3kΩ, 1%, 0.1W, 50V, Thick film Panasonic ERJ-3EKF1432V DNP 0603
62 1 R504 1%, 0.1W, 75V, Thick film Panasonic ERJ-3EKF2213V 221kΩ 0603
63 1 R505 0.1%, 1/16W, 75V, Thin film Susumu RG1608P-3162-B-T5 31.6kΩ 0603
64 1 R507 1%, 0.1W, 75V, Thick film Vishay CRCW06033K24FKEA 3.24kΩ 0603
65 1 R601 0.1%, 0.1W, 150V, Thin film Panasonic ERA-3AEB2742V 27.4kΩ 0603
66 3 R602, R701, R702 0.1%, 0.06W, 75V, Thin film Susumu RG1608P-3482-B-T5 34.8kΩ 0603
67 2 R603, R703 1%, 0.1W, 50V, Thick film Bourns CR0603-FX-1201ELF 1.2kΩ 0603
68 2 R606, R706 1%, 0.1W, 50V, Thick film KOA Speer RK73H1JTTD1303F 130kΩ 0603
69 2 R607, R707 1%, 0.1W, 75V, Thick film Panasonic ERJ-3EKF1503V 150kΩ 0603
70 3 R612, R712 1%, 0.1W, 75V, Thick film KOA Speer RK73H2BTTD2R21F 2.21Ω 1206
71 1 R810       DNP 0603
72 1 R613 0.1%, 0.1W, 150V, Thin film Panasonic ERA-3AEB154V 150kΩ 0603
73 1 R801 1%, 0.1W, 150V, Thick film Panasonic ERJ-3EKF47R0V 47Ω 0603
74 1 R804 0.1%, 0.06W, 75V, Thin film Panasonic ERA-3AEB2322V 23.2kΩ 0603
75 1 R805 0.1%, 0.1W, 50V, Thin film Bourns CRT0603-BY-1002ELF 10kΩ 0603
76 5 U101, U201, U301, U401, U501 Current-mode, PWM stepdown Maxim MAX8686ETL+ MAX8686 40-pin TQFN-EP
77 2 U601, U701 Current-mode, PWM stepdown Maxim MAX8654ETX+ MAX8654 36-pin TQFN-EP
78 1 U801 Current-mode, PWM stepdown Maxim MAX15041ETE+ MAX15041 16-pin TQFN-EP
79 1 PCB MAXIM KINTEX7 Maxim Power Module Rev, 1 PC Process MAXIM KINTEX7 Maxim Power Module Rev, 1    

Board Image

Figure 10. Board Image
More detailed image.
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Maxim设备 (3)

器件号 名称 产品线 购买 设计套件和评估模块
MAX8654 12V、8A、1.2MHz、降压型调节器 开关稳压器 立即购买 设计套件
MAX15041 低成本、3A、4.5V至28V输入、350kHz PWM降压型DC-DC调节器,内置开关 开关稳压器 立即购买 设计套件
MAX8686 单相/多相、降压型、DC-DC转换器,每相可提供高达25A的电流 开关稳压器 立即购买 设计套件

Maxim设备 (3)

器件号 产品线
开关稳压器
12V、8A、1.2MHz、降压型调节器
开关稳压器
低成本、3A、4.5V至28V输入、350kHz PWM降压型DC-DC调节器,内置开关
开关稳压器
单相/多相、降压型、DC-DC转换器,每相可提供高达25A的电流

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