Datasheet LTC3779 (Analog Devices) - 8
| Manufacturer | Analog Devices |
| Description | 150V VIN and VOUT Synchronous 4-Switch Buck-Boost Controller |
| Pages / Page | 38 / 8 — TYPICAL PERFORMANCE CHARACTERISTICS. Shutdown from RUN. Start-Up Forced … |
| Revision | A |
| File Format / Size | PDF / 2.6 Mb |
| Document Language | English |
TYPICAL PERFORMANCE CHARACTERISTICS. Shutdown from RUN. Start-Up Forced Continuous Mode. Forced Continuous Mode
Model Line for this Datasheet
Text Version of Document
LTC3779
TYPICAL PERFORMANCE CHARACTERISTICS Shutdown from RUN Shutdown from RUN Start-Up Forced Continuous Mode Forced Continuous Mode Pulse-Skipping Mode Buck Region Boost Region Boost Region
RUN RUN 5V/DIV 5V/DIV SW1 100V/DIV SW1 SW1 SW2 100V/DIV 100V/DIV 100V/DIV SW2 SW2 100V/DIV 100V/DIV IL IL IL 500mA/DIV 20A/DIV 20A/DIV VOUT VOUT VOUT 50V/DIV 50V/DIV 50V/DIV 3779 G19 3779 G20 5ms/DIV 3779 G18 200µs/DIV 200µs/DIV VIN = 120V VIN = 24V VIN = 24V VOUT = 48V VOUT = 48V VOUT = 48V 15Ω RESISTIVE LOAD 5A LOAD 5A LOAD
Shutdown from RUN Shutdown from RUN Forced Continuous Mode Forced Continuous Mode Buck-Boost Region Buck Region Line Transient Rising Edge
RUN RUN 5V/DIV 5V/DIV VIN SW1 SW1 100V/DIV 100V/DIV 100V/DIV 12V to 120V SW2 SW2 ITH 100V/DIV 100V/DIV 2V/DIV I I L I L 20A/DIV L 2A/DIV 1A/DIV V V OUT OUT V 50V/DIV OUT 500mV/DIV 50V/DIV AC-COUPLED 200µs/DIV 3779 G21 200µs/DIV 3779 G22 1ms/DIV 3779 G23 VIN = 48V VIN = 120V VOUT = 48V VOUT = 48V VOUT = 48V NO LOAD ILOAD = 5A
Line Transient Falling Edge DRVCC vs Load Current DRVCC vs Load Current
10.5 6.5 VIN LDO (No NDRV FET), EXTVCC = 0V label2 label3 label4 label5 VIN LDO (No NDRV FET), EXTVCC = 0V NDRV LDO (NDRV FET), EXTVCC = 0V NDRV LDO (NDRV FET), EXTVCC = 0V VIN EXTVCC = 12V (No NDRV FET) EXTVCC = 8.5V (No NDRV FET) 100V/DIV ITH 10.0 6.0 2V/DIV I TAGE (V) TAGE (V) L 1A/DIV VOL VOL V CC CC OUT 500mV/DIV 9.5 DRV 5.5 DRV AC-COUPLED 1ms/DIV 3779 G24 V V OUT = 48V VIN = 12V IN = 12V DRVSET = V5 DRVSET = 0V 9.0 5.0 0 20 40 60 80 100 0 20 40 60 80 100 LOAD CURRENT (mA) LOAD CURRENT (mA) 3779 G25 3779 G26 Rev A 8 For more information www.analog.com Document Outline FEATURES DESCRIPTION APPLICATIONS TYPICAL APPLICATION ABSOLUTE MAXIMUM RATINGS PIN CONFIGURATION ORDER INFORMATION ELECTRICAL CHARACTERISTICS TYPICAL PERFORMANCE CHARACTERISTICS PIN FUNCTIONS BLOCK DIAGRAM OPERATION APPLICATIONS INFORMATION PACKAGE DESCRIPTION REVISION HISTORY TYPICAL APPLICATION RELATED PARTS
TYPICAL PERFORMANCE CHARACTERISTICS Shutdown from RUN Shutdown from RUN Start-Up Forced Continuous Mode Forced Continuous Mode Pulse-Skipping Mode Buck Region Boost Region Boost Region
RUN RUN 5V/DIV 5V/DIV SW1 100V/DIV SW1 SW1 SW2 100V/DIV 100V/DIV 100V/DIV SW2 SW2 100V/DIV 100V/DIV IL IL IL 500mA/DIV 20A/DIV 20A/DIV VOUT VOUT VOUT 50V/DIV 50V/DIV 50V/DIV 3779 G19 3779 G20 5ms/DIV 3779 G18 200µs/DIV 200µs/DIV VIN = 120V VIN = 24V VIN = 24V VOUT = 48V VOUT = 48V VOUT = 48V 15Ω RESISTIVE LOAD 5A LOAD 5A LOAD
Shutdown from RUN Shutdown from RUN Forced Continuous Mode Forced Continuous Mode Buck-Boost Region Buck Region Line Transient Rising Edge
RUN RUN 5V/DIV 5V/DIV VIN SW1 SW1 100V/DIV 100V/DIV 100V/DIV 12V to 120V SW2 SW2 ITH 100V/DIV 100V/DIV 2V/DIV I I L I L 20A/DIV L 2A/DIV 1A/DIV V V OUT OUT V 50V/DIV OUT 500mV/DIV 50V/DIV AC-COUPLED 200µs/DIV 3779 G21 200µs/DIV 3779 G22 1ms/DIV 3779 G23 VIN = 48V VIN = 120V VOUT = 48V VOUT = 48V VOUT = 48V NO LOAD ILOAD = 5A
Line Transient Falling Edge DRVCC vs Load Current DRVCC vs Load Current
10.5 6.5 VIN LDO (No NDRV FET), EXTVCC = 0V label2 label3 label4 label5 VIN LDO (No NDRV FET), EXTVCC = 0V NDRV LDO (NDRV FET), EXTVCC = 0V NDRV LDO (NDRV FET), EXTVCC = 0V VIN EXTVCC = 12V (No NDRV FET) EXTVCC = 8.5V (No NDRV FET) 100V/DIV ITH 10.0 6.0 2V/DIV I TAGE (V) TAGE (V) L 1A/DIV VOL VOL V CC CC OUT 500mV/DIV 9.5 DRV 5.5 DRV AC-COUPLED 1ms/DIV 3779 G24 V V OUT = 48V VIN = 12V IN = 12V DRVSET = V5 DRVSET = 0V 9.0 5.0 0 20 40 60 80 100 0 20 40 60 80 100 LOAD CURRENT (mA) LOAD CURRENT (mA) 3779 G25 3779 G26 Rev A 8 For more information www.analog.com Document Outline FEATURES DESCRIPTION APPLICATIONS TYPICAL APPLICATION ABSOLUTE MAXIMUM RATINGS PIN CONFIGURATION ORDER INFORMATION ELECTRICAL CHARACTERISTICS TYPICAL PERFORMANCE CHARACTERISTICS PIN FUNCTIONS BLOCK DIAGRAM OPERATION APPLICATIONS INFORMATION PACKAGE DESCRIPTION REVISION HISTORY TYPICAL APPLICATION RELATED PARTS
