Datasheet LTC3810 (Analog Devices) - 5
| Manufacturer | Analog Devices |
| Description | 100V Current Mode Synchronous Switching Regulator Controller |
| Pages / Page | 38 / 5 — TYPICAL PERFORMANCE CHARACTERISTICS. Short-Circuit/. Load Transient … |
| File Format / Size | PDF / 491 Kb |
| Document Language | English |
TYPICAL PERFORMANCE CHARACTERISTICS. Short-Circuit/. Load Transient Response. Start-Up. Fault Timeout Operation
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LTC3810
TYPICAL PERFORMANCE CHARACTERISTICS Short-Circuit/ Load Transient Response Start-Up Fault Timeout Operation
INTV V CC V OUT OUT 5V/DIV 100mV/ 10V/DIV INTVCC DIV VOUT SS/TRACK 5V/DIV 4V/DIV VIN I 50V/DIV OUT IL 5A/DIV IL 5A/DIV 5A/DIV 3810 G01 3810 G02 3810 G03 V 50μs/DIV IN = 48V V 500μs/DIV IN = 48V VIN = 48V 10ms/DIV 0A TO 5A LOAD STEP ILOAD = 1A RSHORT = 0.1Ω FRONT PAGE CIRCUIT MODE/SYNC = 0V FRONT PAGE CIRCUIT FRONT PAGE CIRCUIT
Short-Circuit/ Foldback Operation Tracking Pulse Skip Mode Operation
VOUT 5V/DIV VOUT 100mV/ VOUT SS/TRACK DIV VFB 5V/DIV 0.5V/ ITH DIV SS/TRACK VFB 0.5V/DIV 0.5V/DIV VFB 0.5V/DIV IL I 2A/DIV L IL 5A/DIV 5A/DIV 3810 G06 V 20μs/DIV IN = 48V 3810 G04 3810 G05 V 200μs/DIV IN = 48V VIN = 48V 500μs/DIV IOUT = 100mA FRONT PAGE CIRCUIT ILOAD = 1A MODE/SYNC = INTVCC MODE/SYNC = 0V FRONT PAGE CIRCUIT FRONT PAGE CIRCUIT
Effi ciency vs Input Voltage Effi ciency vs Load Current Frequency vs Input Voltage
100 100 280 IOUT = 5A V 95 IN = 36V VIN = 12V VIN = 60V 270 90 90 I I OUT = 0A OUT = 0.5A 260 85 I 250 OUT = 5A EFFICIENCY (%) 80 EFFICIENCY (%) 80 FREQUENCY (kHz) VOUT = 5V 240 75 Si7850 MOSFETs f = 250kHz MODE/SYNC = INTVCC MODE/SYNC = 0V FRONT PAGE CIRCUIT f = 250kHz FRONT PAGE CIRCUIT 70 70 230 10 20 30 40 50 60 70 80 0 1 2 3 4 5 6 7 10 20 30 40 50 60 70 80 INPUT VOLTAGE (V) LOAD CURRENT (A) INPUT VOLTAGE (V) 3810 G07 3810 G08 3810 G09 3810fc 5
TYPICAL PERFORMANCE CHARACTERISTICS Short-Circuit/ Load Transient Response Start-Up Fault Timeout Operation
INTV V CC V OUT OUT 5V/DIV 100mV/ 10V/DIV INTVCC DIV VOUT SS/TRACK 5V/DIV 4V/DIV VIN I 50V/DIV OUT IL 5A/DIV IL 5A/DIV 5A/DIV 3810 G01 3810 G02 3810 G03 V 50μs/DIV IN = 48V V 500μs/DIV IN = 48V VIN = 48V 10ms/DIV 0A TO 5A LOAD STEP ILOAD = 1A RSHORT = 0.1Ω FRONT PAGE CIRCUIT MODE/SYNC = 0V FRONT PAGE CIRCUIT FRONT PAGE CIRCUIT
Short-Circuit/ Foldback Operation Tracking Pulse Skip Mode Operation
VOUT 5V/DIV VOUT 100mV/ VOUT SS/TRACK DIV VFB 5V/DIV 0.5V/ ITH DIV SS/TRACK VFB 0.5V/DIV 0.5V/DIV VFB 0.5V/DIV IL I 2A/DIV L IL 5A/DIV 5A/DIV 3810 G06 V 20μs/DIV IN = 48V 3810 G04 3810 G05 V 200μs/DIV IN = 48V VIN = 48V 500μs/DIV IOUT = 100mA FRONT PAGE CIRCUIT ILOAD = 1A MODE/SYNC = INTVCC MODE/SYNC = 0V FRONT PAGE CIRCUIT FRONT PAGE CIRCUIT
Effi ciency vs Input Voltage Effi ciency vs Load Current Frequency vs Input Voltage
100 100 280 IOUT = 5A V 95 IN = 36V VIN = 12V VIN = 60V 270 90 90 I I OUT = 0A OUT = 0.5A 260 85 I 250 OUT = 5A EFFICIENCY (%) 80 EFFICIENCY (%) 80 FREQUENCY (kHz) VOUT = 5V 240 75 Si7850 MOSFETs f = 250kHz MODE/SYNC = INTVCC MODE/SYNC = 0V FRONT PAGE CIRCUIT f = 250kHz FRONT PAGE CIRCUIT 70 70 230 10 20 30 40 50 60 70 80 0 1 2 3 4 5 6 7 10 20 30 40 50 60 70 80 INPUT VOLTAGE (V) LOAD CURRENT (A) INPUT VOLTAGE (V) 3810 G07 3810 G08 3810 G09 3810fc 5
