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dc1768af

DEMO MANUAL DC1768A

Figure 5. Load Step Response V

IN

 = 12V, V

OUT

 = 1.8V, 2.5A Load Step (0A-2.5A)

Forced Continuous Mode f

SW

 = 1MHz Trace 2: Output Voltage (50mV/DIV AC) 

Trace 4: Output Current (1A/DIV)

Figure 6. Load Step Response V

IN

 = 12V, V

OUT

 = 3.3V, 2.5A Load Step (0A-2.5A)

Forced Continuous Mode f

SW

 = 1MHz Trace 2: Output Voltage (50mV/DIV AC) 

Trace 4: Output Current (1A/DIV)

Load Step Response Waveforms

Load Step Response Waveforms

 QUICK START PROCEDURE

Summary of Contents for DC1768A

Page 1: ...Because of the current and temperature monitoring and limiting capabilities of the LTC3626 the 1768A input or output current as well as its maximum temperature can be limited or clamped The 1768A uses...

Page 2: ...The output voltage should be regulating Measure VOUT it should measure 1 2V 1 1 188V to 1 212V Vary the input voltage from 3 6V to 20V and adjust the load current from 0 to 2 5A VOUT should regulate...

Page 3: ...C Forced Continuous Mode FCM Burst Mode or SYNC FCM BM SYNC JP7 RUN ON OFF JP8 Frequency FREQ 1MHz 2MHz JP9 ITH External Comp EXT or Internal INTVCC Comp INT EXT INT JP10 Temperature Setting TSET Exte...

Page 4: ...4 dc1768af DEMO MANUAL DC1768A QUICK START PROCEDURE Figure 1 Proper Equipment Measurement Set Up Figure 2 Measuring Input or Output Ripple IOUT LOAD IIN VS VIN VOUT GND VIN...

Page 5: ...age 10V DIV Trace 2 Output Ripple Voltage 20mV DIV AC Trace 4 Inductor Ripple Current 2A DIV Figure 4 Load Step Response VIN 12V VOUT 1 2V 2 5A Load Step 0A 2 5A Forced Continuous Mode fSW 1MHz Trace...

Page 6: ...e fSW 1MHz Trace 2 Output Voltage 50mV DIV AC Trace 4 Output Current 1A DIV Figure 6 Load Step Response VIN 12V VOUT 3 3V 2 5A Load Step 0A 2 5A Forced Continuous Mode fSW 1MHz Trace 2 Output Voltage...

Page 7: ...ent Monitors Their Voltages Equate to VIOUTMON 2A 16000 4 02k 0 503V VINMON 620mA 16000 4 02k 0 156V Figure 8 Efficiency Graph VIN 12V Burst Mode fSW 1MHz L 1 H Vishay IHLP 2020BZ ER 1R0 MO1 QUICK STA...

Page 8: ...4023C225MAT 16 2 C12 C13 Cap X5R 1 F 25V 10 0603 TDK C1608X5R1E105K 17 0 C14 OPT Cap 1812 18 1 C15 Cap X5R 0 33 F 25V 20 0603 AVX 06033D334MAT 19 0 D1 OPT Schottky Diode SOD 323 20 2 R10 RON Res Chip...

Page 9: ...7 216 1 1 5 1 25 66 67 1 7 6 5 8 7 6 35235 7 5 72 1 5 7 12 2 1 6 0 7 6833 25 86 7 1 5 7 12 2 3 576 6 121 ZZZ OLQHDU FRP 02 5 8 7 6 1 521286 8 5 8 725 1 7 8 720 7 021 725 1 HGQHVGD XO 6 7 12 5 9 6 7 2...

Page 10: ...DING ANY WARRANTY OF MERCHANTABILITY OR FITNESS FOR ANY PARTICULAR PURPOSE EXCEPT TO THE EXTENT OF THIS INDEMNITY NEITHER PARTY SHALL BE LIABLE TO THE OTHER FOR ANY INDIRECT SPECIAL INCIDENTAL OR CONS...

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