Silicon Laboratories Si825x Скачать руководство пользователя страница 23

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S i 8 2 5 x M u l t i - P h a s e P O L - R D

Rev. 0.2

12. Schematics

PHASE1

2_P

PHASE2

2_P

PH2

1_P

PH1

UT_

ND_

REM

NDA

1_P

PHASE1

PHASE2

PH1

PH2

PH3

PH4

ND_

UT_

REM

NDA

NOTE: high current path

to J2 GND

(1-5V 3.3V nom)

NOTE: PGND plane

NOTE: Remove R11,R10

before final routing

NOTE: 10A high current

path, use plane/pour

NOTE: VOUT PWR plane

NOTE: Keep PHASE1,2 PH1,2 _PWR and PH1,2 _GND nets short, seperate, use Cu pours

NOTE: These nets are connected at a common plane,

they are kept seperate until that connection to

avoid circulating currents between the phases.

plane

Note: Cb > 100 * Q Ciss

NOTE: separate path to

digital GND

plane

NOTE: PGND plane

NOTE: GNDA plane

NOTE: Route as a Differential Pair

NOTE: Analog - Quiet GND

NOTE: Trace to VIN sense

network, Place near J1

NOTE: Sense Traces to

VOUT, Place near

J3,J4

6.3V X5R

C1210

6.3V X5R

C1210

Signal AC return

25V X5R C1210

T2165H

1uF25V

47uF25V

95uH

CR2

BAS1

CR2

BAS1

T2165H

1uF

VCC

GND

5101A

47uF25V

100uF_C

47uF25V

TP7

PH3

TP7

PH3

1uF25V

100uF_C

95uH

VCC

GND

5101A

100uF_C

CR3

BAS1

CR3

BAS1

REM

TE_

SENSE

REM

TE_

SENSE

1uF

100uF_C

CR1

BAS1

CR1

BAS1

1uF25V

100uF_C

TP6

PH1

TP6

PH1

1uF25V

100uF_C

T2165H

100uF_C

47uF25V

470uF25V

CR4

BAS1

CR4

BAS1

Figu

17.

Si82

50 Mu

lti-Phase POL T

rget Board Sche

matic (Power)

Содержание Si825x

Страница 1: ...elopment Environment IDE Keil 8051 Development Tools macro assembler linker evaluation C compiler Source code examples and register definition files Multi Phase POL Firmware Kernel Application Builder tool suite waveform editor compensator system and MCU wizards SMBusTM Monitor Software Documentation Kernel flowcharts and Si825x data sheet Si825x Multi Phase POL Reference Design User s Guide this ...

Страница 2: ...ti Phase POL Target Board Figure 1 contains system power stages and digital control circuits with debug connectors for the Si8250 digital power controller The user can also access and control the target board using SMBus Figure 1 Si8250 Multi Phase POL Target Board Top View Bottom View Si825x Power Supply Form Factor Driver SMBus Adaptor Interface J6 Serial Debug Interface C2 Connector J7 VIN VOUT...

Страница 3: ...s 1 Connect a VIN power supply to the VIN terminals J1 and J2 as shown in Figure 2 Do not yet turn the power supply on 2 Connect a load to the VOUT terminals J3 and J4 as shown in Figure 2 For initial testing a 2 15 W resistor is recommended For higher output currents an electronic load simulator can be used 3 Turn the VIN supply on The converter will start up and provide 3 3 V at VOUT Figure 2 Bo...

Страница 4: ...for connection to the IDE 1 Connect a VIN power supply to the VIN terminals J1 and J2 as shown in Figure 2 Do not yet turn the power supply on 2 Connect the USB Debug Adaptor s ribbon cable to the Si8250 Multi Phase POL Target Board at J7 as shown in Figure 3 3 Connect the USB cable to the USB Debug Adapter s USB input plug 4 Connect the USB cable from the USB Debug Adapter to a USB port on the PC...

Страница 5: ...tware or read documentation by clicking buttons on the installation panel If the installer does not automatically start when you insert the CD ROM run autorun exe found in the root directory of the CD ROM Refer to the ReleaseNotes txt file on the CD ROM for the latest information regarding known problems and restrictions See 7 Silicon Laboratories Integrated Development Environment on page 9 for f...

Страница 6: ... the download 8 Connect a load to the VOUT terminals J3 and J4 as shown in Figure 2 on page 3 For initial testing a 2 15 W resistor is recommended For higher output currents an electronic load simulator can be used 9 Run the converter firmware by pressing the Go button in the IDE toolbar The converter will start up and provide 3 3 V at VOUT 10 Save the project when finished with the debug session ...

Страница 7: ...Hardware Setup on page 4 3 Drivers must be installed to allow the PMBus Monitor to communicate with the USB to SMBus Bridge Board The driver files are located by default in the Silabs Power Si825x AppBuilder PMBus Monitor USB SMBus Bridge Board Drivers directory Run the PreInstaller exe application This program will copy the driver files to the PC s Program Files directory and then register the dr...

Страница 8: ...ecting Options Launch PMBus Monitor Tool from the Application Builder The window shown in Figure 5 will appear The PMBus Monitor can be used to control and configure the target board The target can be enabled disabled through the monitor The PMBus Monitor allows parameters such as fault thresholds to be changed It also reports operating conditions and problems Figure 5 View of the PMBus Monitor ...

Страница 9: ...linker and evaluation version C51 C compiler These tools can be used from within the Silicon Laboratories IDE Figure 6 shows the IDE Figure 6 IDE 7 1 System Requirements Silicon Laboratories IDE requirements are as follows Pentium class host PC running Microsoft Windows 95 or later or Microsoft Windows NT or later One available USB port 64 MB RAM and 40 MB free HD space recommended 7 2 Assembler a...

Страница 10: ...tension such as c h or asm to enable color syntax highlighting 3 Right click on New Project in the Project Window Select Add files to project Select files in the file browser and click Open Continue adding files until all project files have been added 4 For each of the files in the Project Window that you want assembled compiled and linked into the target build right click on the file name and sel...

Страница 11: ...ence Design has an online debug feature that optionally enables the user to inspect or update special function registers SFRs in the Si825x while it is operating For example filter coefficients can be optimized by simply typing in new coefficient values while the supply is connected to a network analyzer and running The IDE can also be operated in Standard mode where SFR inspect and update is allo...

Страница 12: ...de and the Application Builder see Figure 8 The Application Builder includes device peripheral configuration options with the Peripheral Configuration Wizard Additionally the Application Builder tools are used to modify Kernel operations Three key development tools within the Application Builder are the DPWM Timing Diagram Editor the System Parameter Programmer and the Compensation Editor These to...

Страница 13: ...event edge will be modulated relative to its absolute edge at time tick 10 To create this edge hold the mouse above the Phase 1 timing line to the right of time tick 10 at time tick 60 Either double click or right click at that point and select Event Cu0 Edge Next select the edge to reference by clicking on edge 1 in Phase 1 A relative falling Cu0 edge will be created at time tick 60 since u n def...

Страница 14: ...its rising edge starts relative to Phase 1 s falling edge Figure 11 DPWM Timing Diagram Editor Timing Simulator 4 Now that the desired timing for the two phase system has been created click on OK The Application Builder will automatically extract the correct DPWM timing initialization data for the Kernel These coefficients can be saved to a new project file if desired for later use Click on File S...

Страница 15: ...nged as desired to accommodate other buck topologies To view the gain and phase plots with the default parameters click on the View Graphs button and their plots will be generated a short time later Moreover clicking on the View Graphs button the user can view different responses of the buck regulator Sample graphs are shown in Figure 12 Table 1 shows two frequency responses for the multi phase PO...

Страница 16: ...o input all system settings UVLO OV OCP etc and then converts these parameters to HEX and populates the resulting initialization code in the Kernel To open the System Settings window open the Application Builder and select System Configuration System Settings from the menu see Figure 13 Figure 13 System Parameters Window ...

Страница 17: ... code for the Si825x s on chip peripherals ADC2 comparator UART SMBusTM etc The peripheral windows can be accessed by clicking on the Peripherals menu in the Application Builder Figure 14 illustrates the Port I O window For more details on using this wizard consult the Help file by clicking on Help Help Figure 14 Peripheral Configuration Wizard Port I O Window ...

Страница 18: ...ions Connection Options from the IDE menu In the Connection Options window select USB Debug Adapter in the Serial Adapter section Next select C2 in the Debug Interface section The Si825x family of devices use the Silicon Laboratories 2 wire C2 debug interface Press OK to close the window 4 Click the Connect button in the toolbar or select Debug Connect from the menu to connect to the device 5 Sele...

Страница 19: ... Reset Figure 15 Si8250 Multi Phase POL Target Board 10 1 System Clock Sources The Si8250 IQ device installed on the target board features a calibrated programmable internal oscillator that is enabled as the system clock source on reset After reset the device operates at a frequency of 80 kHz by default using the internal low frequency oscillator but may be configured by software to operate at oth...

Страница 20: ...ower source must be from 10 15 V with at least 10 A maximum output 10 4 VOUT J3 J4 Connectors J3 and J4 are the dc output from the Si8250 Multi Phase POL Target Board A load preferably electronic should be connected here 10 5 VOUT J5 J4 Connectors J5 and J4 provide an alternate output monitoring note that minimizes output loading while VOUT is being monitored Table 2 Target Board Switch and LED De...

Страница 21: ...0 ENABLE Polarity Select JP1 The JP1 jumper selects the polarity of the reset line for the Si8250 When installed the reset signal is active high otherwise it is active low 10 9 Voltage and Current Sense Test Points The Si8250 Multi Phase POL Target Board has several test points for VREF VINSENSE IIN VSENSE all PHn IPK and more These test points correspond to the respective pins on the Si8250 IQ in...

Страница 22: ...Debug Adapter is capable of providing power to a circuit board via pin 10 of the DEBUG connector The Si8250 Multi Phase POL Target Board is not designed to be powered from this source Table 8 shows the pin definitions for the DEBUG ribbon cable connector Note The USB Debug Adapter requires a target system clock of 32 kHz or greater With the default settings the USB Debug Adapter can supply up to 1...

Страница 23: ...3 5 2 1 Q3 HAT2165H Q3 HAT2165H C4 1uF25V C4 1uF25V J2 PGND J2 PGND J3 VOUT J3 VOUT C76 47uF25V C76 47uF25V R2 4R7 R2 4R7 R4 4R7 R4 4R7 R7 0R1 R7 0R1 L2 0 95uH L2 0 95uH CR2 BAS16X CR2 BAS16X 4 3 5 2 1 Q2 HAT2165H Q2 HAT2165H 4 3 5 2 1 Q1 HAT2165H Q1 HAT2165H C21 0 1uF C21 0 1uF R6 0R1 R6 0R1 R1 4R7 R1 4R7 R11 0R1 R11 0R1 HS 4 HO 3 LO 8 HB 2 VCC 1 HI 5 LI 6 GND 7 U1 LM5101AM U1 LM5101AM J4 PGND J4...

Страница 24: ...NP R22 DNP C43 0 01uF C43 0 01uF C89 10uF_6V3 C89 10uF_6V3 C31 1uF C31 1uF C97 0 1uF C97 0 1uF R36 DNP R36 DNP C45 6800pF_NPO C45 6800pF_NPO C12 0 01uF C12 0 01uF R78 1K R78 1K C95 0 1uF C95 0 1uF 5 6 7 4 11 U4B TLV2374IPWR U4B TLV2374IPWR R63 1K R63 1K IN 1 GND 2 OUT 5 SHDN 3 BYP 4 U5 LP2985AIM5 2 5 U5 LP2985AIM5 2 5 TP4 VREM TP4 VREM C94 4 7uF_6V3 C94 4 7uF_6V3 R68 3 00K 0 5 R68 3 00K 0 5 C91 0 ...

Страница 25: ...N2D 24 1 2 3 4 5 6 7 8 9 10 J7 SI 8250_DEBUG J7 SI 8250_DEBUG AC1 A1 AC2 A2 K2 K1 D7 BAS70DW 04TP D7 BAS70DW 04TP A C Pin Green Pin Green R73 200 R73 200 1 8 RN3A 24 RN3A 24 2 7 RN2B 24 RN2B 24 2 7 RN3B 24 RN3B 24 R72 200 R72 200 2 7 RN1B 24 RN1B 24 3 6 RN3C 24 RN3C 24 AC1 A1 A2 AC2 K2 K1 D8 BAS70DW 04TP D8 BAS70DW 04TP R70 604 R70 604 A C Pgood Green Pgood Green 4 5 RN3D 24 RN3D 24 AC1 A1 AC2 A2 ...

Страница 26: ...V 11 8 C78 C79 C80 C81 C82 C83 C84 C85 587 1387 2 ND Digi Key 100 uF_Cer 6 3 V 12 4 C88 C89 C92 C93 PCC2395CT ND Digi Key 10 uF 6 3 V 13 3 C90 C94 C96 PCC2318CT ND Digi Key 4 7 uF 6 3 V 14 3 D6 D7 D8 BAS70DW 04 DICT ND Digi Key BAS70DW 04TP 15 1 FB1 240 2362 1 ND Digi Key 100M500 mA 16 1 JP1 WM4000 ND Digi Key JUMPER1x2 17 1 J1 2551 2 00 44 00 00 07 0 Bisco VIN 18 2 J2 J4 2551 2 00 44 00 00 07 0 B...

Страница 27: ... Digi Key 3 00 K 0 5 42 1 R69 Digi Key 215 0 5 43 1 R70 P604HCT ND Digi Key 604 1 44 2 R73 R72 P200HCT ND Digi Key 200 1 45 1 R74 P249HCT ND DNP Digi Key 249 5 46 1 R76 DNP 47 1 TP1 5002K ND Digi Key IOUT1 48 1 TP2 5002K ND Digi Key IOUT2 49 1 TP3 5002K ND Digi Key VINSENSE 50 1 TP4 5002K ND Digi Key VREM 51 1 TP6 5002K ND Digi Key PH1 52 1 TP7 5002K ND Digi Key PH3 53 1 TP8 5002K ND Digi Key V25A...

Страница 28: ... CHANGE LIST Revision 0 1 to Revision 0 2 Updated board photos in Figure 1 Si8250 Multi Phase POL Target Board on page 2 and Figure 2 Board Power Configuration on page 3 Updated PMBus part number Item 21 in Section 13 Bill of Materials on page 26 ...

Страница 29: ...Si825x Multi Phase POL RD Rev 0 2 29 NOTES ...

Страница 30: ...s Silicon Laboratories reserves the right to make changes without further notice Silicon Laboratories makes no warranty rep resentation or guarantee regarding the suitability of its products for any particular purpose nor does Silicon Laboratories assume any liability arising out of the application or use of any product or circuit and specifically disclaims any and all liability including without ...

Страница 31: ...Mouser Electronics Authorized Distributor Click to View Pricing Inventory Delivery Lifecycle Information Silicon Laboratories MULTIPHSPOL RD ...

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