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dc2681aaf

DEMO MANUAL DC2681A-A

QUICK START PROCEDURE

70.00 

72.00 

74.00 

76.00 

78.00 

80.00 

82.00 

84.00 

86.00 

88.00 

90.00 

EFFICIENCY (%) 

0.00 

5.00 

10.00 

15.00 

20.00 

25.00 

OUTPUT CURRENT (A) 

1.8 V

OUT

1.5 V

OUT

1.2 V

OUT

1.0 V

OUT

0.8 V

OUT

dc2681aaf F02

V

OUT

: 50mV/DIV

I

OUT_STEP

: 10A/DIV

dc2681aaf F03

Figure 2. Measured Efficiency at V

IN

 = 12.0V, f

SW

 = 600kHz, CCM

Figure 3. Measured Load Transient

12V

IN

, 600kHz Efficiency Sweeps

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Summary of Contents for LTM4645

Page 1: ...efficiency at low load currents the MODE_PLLIN jumper selects pulse skipping mode for noise sensitive applications or burst mode operation in L LT LTC LTM Module Linear Technology and the Linear logo...

Page 2: ...am eters 5 Optional For optional load transient test apply an adjustable pulse signal between IOSTEP_CLK and GND test points The pulse amplitude sets the load step cur rent amplitude Keep the pulse wi...

Page 3: ...3 dc2681aaf DEMO MANUAL DC2681A A QUICK START PROCEDURE Figure 1 Measurement Setup of DC2681A A LOAD VIN dc2681aaf F01 Downloaded from Arrow com Downloaded from Arrow com Downloaded from Arrow com...

Page 4: ...00 25 00 OUTPUT CURRENT A 1 8 VOUT 1 5 VOUT 1 2 VOUT 1 0 VOUT 0 8 VOUT dc2681aaf F02 VOUT 50mV DIV IOUT_STEP 10A DIV dc2681aaf F03 Figure 2 Measured Efficiency at VIN 12 0V fSW 600kHz CCM Figure 3 Me...

Page 5: ...ROCEDURE Figure 4 Thermal Image of LTM4645 VIN 12V VOUT 1 0V ILOAD 25A Ambient Temperature 25 0 C No Forced Air Flow Downloaded from Arrow com Downloaded from Arrow com Downloaded from Arrow com Downl...

Page 6: ...SHAY WSL2010R0100FEA 17 1 R25 RES 2 2 1 10W 5 0603 VISHAY CRCW06032R2JNEA 18 1 R26 RES 50k 1 10W 1 0603 VISHAY CRCW060350K0FKEA 19 1 U1 IC LTM4645EY PBF BGA77 15 9 5 01 LINEAR TECH LTM4645EY PBF Addit...

Page 7: ...FOR USE WITH LINEAR TECHNOLOGY PARTS SCALE NONE www linear com 1 Monday February 27 2017 1 1 SINGLE OUTPUT HIGH EFFICIENCY STEP DOWN LT YL B LTM4645EY LTM4647EY DEMO CIRCUIT 2681A A B SIZE DATE IC NO...

Page 8: ...THER FOR ANY INDIRECT SPECIAL INCIDENTAL OR CONSEQUENTIAL DAMAGES The user assumes all responsibility and liability for proper and safe handling of the goods Further the user releases LTC from all cla...

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