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dc1743af

DEMO MANUAL DC1743A

Efficiency vs Load Current

(V

IN

 = 12V)

Efficiency vs Load Current

(V

IN

 = 24V)

Efficiency vs Load Current

(V

IN

 = 36V)

Figure 3. Measured DC1743A Efficiency at Different V

IN

 and V

OUT

 (DCM Mode Enabled)

Figure 2. Measuring V

IN

 or V

OUT

 Ripple

LOAD CURRENT (A)

0

EFFICIENCY (%)

80

85

95
90

100

4

6

DC1743A F03a

75
70

60

65

2

8

55

50

V

OUT

 = 3.3V

V

OUT

 = 5V

DC1743A F02

SCOPE PROBE

LOAD CURRENT (A)

0

EFFICIENCY (%)

80

85

95
90

100

4

6

DC1743A F03b

75
70

60

65

2

8

55

50

V

OUT

 = 3.3V

V

OUT

 = 5V

V

OUT

 = 12V

qUick stArt proceDUre

LOAD CURRENT (A)

0

EFFICIENCY (%)

80

85

100

90

95

4

6

DC1743A F03c

75

70

60

65

2

8

55

50

V

OUT

 = 3.3V

V

OUT

 = 5V

V

OUT

 = 12V

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Summary of Contents for DC1743A

Page 1: ...ions Higherefficiencyatlowloadcurrentsisachievedbysetting the MODE pin jumper to DCM The PLL pin is available to synchronize the LTM4613EV to an external clock The LTM4613 data sheet must be read in conjunction with this demo manual prior to working on or modifying demo circuit DC1743A Design files for this circuit board are available at http www linear com demo TA 25 C PARAMETER CONDITIONS VALUE ...

Page 2: ...aximum voltage of 36V to the board or the part may be damaged The output voltage should be regulated and deliver the selected output voltage 2 4 Vary the input voltage from 5V to 36V and adjust the load current from 0A to 8A Observe the output voltage regulation ripple voltage efficiency and other param eters 5 To measure input or output ripple insert the scope probe to J7 or J4 6 Foroptionalloadt...

Page 3: ... dc1743af DEMO MANUAL DC1743A Figure 1 Proper Measurement Equipment Setup quick start procedure VIN A LOAD V A V DC1743A F01 Downloaded from Arrow com Downloaded from Arrow com Downloaded from Arrow com ...

Page 4: ...RRENT A 0 EFFICIENCY 80 85 95 90 100 4 6 DC1743A F03a 75 70 60 65 2 8 55 50 VOUT 3 3V VOUT 5V DC1743A F02 SCOPE PROBE LOAD CURRENT A 0 EFFICIENCY 80 85 95 90 100 4 6 DC1743A F03b 75 70 60 65 2 8 55 50 VOUT 3 3V VOUT 5V VOUT 12V quick start procedure LOAD CURRENT A 0 EFFICIENCY 80 85 100 90 95 4 6 DC1743A F03c 75 70 60 65 2 8 55 50 VOUT 3 3V VOUT 5V VOUT 12V Downloaded from Arrow com Downloaded fro...

Page 5: ...VIN 12V VOUT 5V 0A TO 4A LOAD STEP COUT 1x47µF 16V POSCAP 3x47µF 16V X5R 1x10µF 16V X5R 100µs DIV IOUT_STEP 5A DIV VOUT 100mV DIV DC1743A F04a VIN 24V VOUT 12V 0A TO 4A LOAD STEP COUT 1x47µF 16V POSCAP 3x47µF 16V X5R 1x10µF 16V X5R IOUT_STEP 5A DIV VOUT 200mV DIV DC1743A F04b 100µs DIV Downloaded from Arrow com Downloaded from Arrow com Downloaded from Arrow com Downloaded from Arrow com Downloade...

Page 6: ...IP 392k 0 06W 1 0603 VISHAY CRCW0603392KFKEA 15 1 D1 ZENER DIODE 5 1V SOT23 ON SEMICONDUCTOR MMBZ5231B 16 1 U1 I C VOLTAGE REG LINEAR TECHNOLOGY CORPORATION LTM4613EV Additional Demo Board Circuit Components 1 1 Q1 MOSFET N CHANNEL 30V VISHAY SILICONIX SUD50N03 09 2 1 C1 CAP X7R 1µF 16V 10 0603 TDK C1608X7R1C105K 3 0 COUT3 CIN4 CIN5 OPT CAP 1210 4 0 CIN6 OPT CAP 0805 5 0 C2 C3 C6 C7 CP OPT CAP 060...

Page 7: ... B12 COMP A11 VFB F12 PGOOD G12 RUN A10 TRACK SS A9 PLLIN A8 INTVCC A7 MPGM A12 MARG0 C12 MARG1 D12 VIN A1 VIN A2 VIN A3 VIN A4 VIN A5 VD A6 VIN B1 VIN B2 VIN B3 VIN B4 VIN B5 VD B6 VD C1 VD C2 VD C3 VD C4 VD C5 VD C6 VOUT J1 VOUT J2 VOUT J3 VOUT J4 VOUT J5 VOUT J6 VOUT J7 VOUT J8 VOUT J9 VOUT J10 VOUT K1 VOUT K2 VOUT K3 VOUT K4 VOUT K5 VOUT K6 VOUT K7 VOUT K8 VOUT K9 VOUT K10 VOUT K11 VOUT L1 VOU...

Page 8: ... INDEMNITY NEITHER PARTY SHALL BE LIABLE TO THE OTHER 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 claims arising from the handling or use of the goods Due to the open construction of the product it is the user s responsibility to take any and all appro...

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