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ADP1974-EVALZ User Guide 

UG-883 

 

Rev. 0 | Page 3 of 12 

TYPICAL SETUP FOR OPEN-LOOP EVALUATION 

OSCILLOSCOPE

MULTIMETER

USE JUMPERS TO CONFIGURE

EN AND MODE OR

CONNECT EXTERNAL POWER

SUPPLIES TO CENTER PINS

GROUND CONNECTION FOR

EXTERNAL EQUIPMENT

AND SYSTEM GROUND

POWER SUPPLY

V

IN

 = 6V TO 60V

POWER SUPPLY

V

FAULT

 = 6V TO 60V

POWER SUPPLY

V

COMP

 = 0V TO 5V

GROUND CONNECTION

FOR EXTERNAL EQUIPMENT

AND SYSTEM GROUND

13517-

001

CONNECT AN OSCILLOSCOPE

IF SYNC IS CONFIGURED

AS AN OUTPUT

CONNECT TO AN EXTERNAL

CLOCK SIGNAL FOR SYNCHRONIZATION
IF SYNC IS CONFIGURED AS AN OUTPUT

SELECT R

S

 FOR A DESIRED CURRENT LIMIT

OR CONNECT CL TO GND FOR EVALUATION

 

Figure 1.  

 
 

Содержание ADP1974-EVALZ

Страница 1: ...ne Frequently asked questions FAQs and troubleshooting GENERAL DESCRIPTION The ADP1974 EVALZ is an open loop evaluation board that can be used to test the features of the ADP1974 The ADP1974 is a cons...

Страница 2: ...Loop Evaluation 3 Evaluation Board Setup Procedures 4 Quick Start Steps 4 Adjusting the ADP1974 EVALZ Components for a Specific Application 5 Application Specific ADP1974 Control 7 Evaluation Board H...

Страница 3: ...EXTERNAL EQUIPMENT AND SYSTEM GROUND POWER SUPPLY VIN 6V TO 60V POWER SUPPLY VFAULT 6V TO 60V POWER SUPPLY VCOMP 0V TO 5V GROUND CONNECTION FOR EXTERNAL EQUIPMENT AND SYSTEM GROUND 13517 001 CONNECT A...

Страница 4: ...test bus This jumper connects EN to VIN and enables the ADP1974 see Figure 2 PLACE JUMPER HERE 13517 002 Figure 2 Enabled Jumper Position Use a jumper to connect the bottom two pins of the EN test bus...

Страница 5: ...wave is visible on the DL pin A complementary square wave is visible on the DH pin 0 5V 4 5V 2 5V BOOST MODE CONFIGURATION MODE 1 05V TYPICAL VSCFG 4 53V TYPICAL COMP 0V DH DL 0V INTERNAL RAMP 4V p p...

Страница 6: ...to a frequency slightly lower than that of the master device to allow the digital synchronization loop of the ADP1974 to synchronize to the master clock period The slave device can synchronize to a ma...

Страница 7: ...20 A typical RCL 20 k The ADP1974 is designed so that the peak current limit is the same in both the buck mode and boost mode of operation A tolerance of 1 or better for the RCL and RS resistors is re...

Страница 8: ...onfigured as an input 1 VIN can also be used to supply VEN and VMODE via jumper connections Alternatively EN and MODE can be powered with separate power supplies 2 When used with the AD8450 the FAULT...

Страница 9: ...8 15 13 14 16 12 11 10 9 RDL CDL CVREG CSYNC RSYNC RDH CDH 1 2 DH DL DH CL DT VREG VREG VIN EN MODE SYNC FAULT SCFG FREQ DMAX SS COMP GND DL DLR DHR VIN EN MODE ADP1974 SYNC FAULT COMP CL CVIN1 CDMAX...

Страница 10: ...UT 13514 016 13517 018 Figure 18 ADP1974 Evaluation Board PCB Top Layer 13517 019 Figure 19 ADP1974 Evaluation Board PCB Inner Layer 2 13517 020 Figure 20 ADP1974 Evaluation Board PCB Inner Layer 1 13...

Страница 11: ...resistor 20 k 0805 1 Vishay Dale CRCW080520K0FKEA 1 RS Current limit set resistor Open 1 RSCFG Synchronization pin control resistor Open 3 CSCFG CDMAX CDT SCFG DMAX and DT pin bypass capacitors 47 pF...

Страница 12: ...party for any reason Upon discontinuation of use of the Evaluation Board or termination of this Agreement Customer agrees to promptly return the Evaluation Board to ADI ADDITIONAL RESTRICTIONS Custome...

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