Datasheet LTC7130 (Analog Devices) - 5
| Hersteller | Analog Devices |
| Beschreibung | 20V 20A Monolithic Buck Converter with Ultralow DCR Sensing |
| Seiten / Seite | 36 / 5 — TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted. … |
| Dateiformat / Größe | PDF / 1.5 Mb |
| Dokumentensprache | Englisch |
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted. Efficiency vs Load Current. and Mode
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LTC7130
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted. Efficiency vs Load Current Efficiency vs Load Current Efficiency vs Load Current and Mode and Mode and Mode
100 100 100 fSW = 500kHz VIN = 5V fSW = 500kHz VIN = 12V fSW = 400kHz VIN = 12V EXTVCC = 5V 90 90 90 80 80 80 70 70 70 60 60 60 50 50 50 40 VOUT = 1.5V 40 VOUT = 1.5V 40 VOUT = 1V EFFICIENCY (%) L = 0.25μH (DCR = 0.37mΩ) EFFICIENCY (%) L = 0.25μH (DCR = 0.37mΩ) EFFICIENCY (%) L = 0.25μH (DCR = 0.37mΩ) 30 FRONT PAGE CIRCUIT 30 FRONT PAGE CIRCUIT 30 FRONT PAGE CIRCUIT 20 CCM 20 CCM 20 CCM Burst Mode OPERATION Burst Mode OPERATION Burst Mode OPERATION 10 PULSE–SKIPPING MODE 10 PULSE–SKIPPING MODE 10 PULSE–SKIPPING MODE 0 0 0 0.1 1 10 100 0.1 1 10 100 0.1 1 10 100 LOAD CURRENT (A) LOAD CURRENT (A) LOAD CURRENT (A) 3681 G01 3681 G02 3681 G03
Efficiency and Power Loss Load Step Load Step vs Load Current (Burst Mode
®
Operation) (Continuous Conduction Mode) vs Load Current (Burst Mode Operation)
100 15 VIN = 20V VOUT = 1.5V 90 VOUT V 80 AC–COUPLED OUT EFFICIENCY 100mV/DIV AC–COUPLED 70 POWER LOSS (W) 100mV/DIV 10 60 50 40 ILOAD ILOAD EFFICIENCY (%) 5 5A/DIV 5A/DIV 30 1A to 15A 1A to 15A 20 20µs/DIV 7130 G05 20µs/DIV 7130 G06 POWER LOSS 10 VIN = 12V VIN = 12V VOUT = 1.5V VOUT = 1.5V 0 0 FRONT PAGE CIRCUIT FRONT PAGE CIRCUIT 0 3 6 9 11 14 17 20 LOAD CURRENT (A) 7130 G04
Load Step (Pulse-Skipping Mode) Inductor Current at Light Load Prebiased Output at 1V
CONTINUOUS V CONDUCTION OUT AC–COUPLED MODE 10A/DIV 100mV/DIV VOUT Burst Mode 500mV/DIV OPERATION 10A/DIV TRACK/SS 500mV/DIV ILOAD VFB 5A/DIV PULSE–SKIP 500mV/DIV 1A TO 15A MODE 10A/DIV 20µs/DIV 7130 G07 10µs/DIV 7130 G08 20ms/DIV 7130 G09 VIN = 12V VIN = 12V VIN = 12V VOUT = 1.5V VOUT = 1.5V VOUT = 1.5V FRONT PAGE CIRCUIT LOAD = 300mA 7130fb For more information www.linear.com/LTC7130 5 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Electrical Characteristics Pin Functions Functional Block Diagram Operation Applications Information Typical Application Related Parts .34579 Applications Typical Application Description Absolute Maximum Ratings Order Information Electrical Characteristics Pin Configuration Pin Functions Functional Block Diagram Operation Applications Information Typical Applications Typical Application Related Parts
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted. Efficiency vs Load Current Efficiency vs Load Current Efficiency vs Load Current and Mode and Mode and Mode
100 100 100 fSW = 500kHz VIN = 5V fSW = 500kHz VIN = 12V fSW = 400kHz VIN = 12V EXTVCC = 5V 90 90 90 80 80 80 70 70 70 60 60 60 50 50 50 40 VOUT = 1.5V 40 VOUT = 1.5V 40 VOUT = 1V EFFICIENCY (%) L = 0.25μH (DCR = 0.37mΩ) EFFICIENCY (%) L = 0.25μH (DCR = 0.37mΩ) EFFICIENCY (%) L = 0.25μH (DCR = 0.37mΩ) 30 FRONT PAGE CIRCUIT 30 FRONT PAGE CIRCUIT 30 FRONT PAGE CIRCUIT 20 CCM 20 CCM 20 CCM Burst Mode OPERATION Burst Mode OPERATION Burst Mode OPERATION 10 PULSE–SKIPPING MODE 10 PULSE–SKIPPING MODE 10 PULSE–SKIPPING MODE 0 0 0 0.1 1 10 100 0.1 1 10 100 0.1 1 10 100 LOAD CURRENT (A) LOAD CURRENT (A) LOAD CURRENT (A) 3681 G01 3681 G02 3681 G03
Efficiency and Power Loss Load Step Load Step vs Load Current (Burst Mode
®
Operation) (Continuous Conduction Mode) vs Load Current (Burst Mode Operation)
100 15 VIN = 20V VOUT = 1.5V 90 VOUT V 80 AC–COUPLED OUT EFFICIENCY 100mV/DIV AC–COUPLED 70 POWER LOSS (W) 100mV/DIV 10 60 50 40 ILOAD ILOAD EFFICIENCY (%) 5 5A/DIV 5A/DIV 30 1A to 15A 1A to 15A 20 20µs/DIV 7130 G05 20µs/DIV 7130 G06 POWER LOSS 10 VIN = 12V VIN = 12V VOUT = 1.5V VOUT = 1.5V 0 0 FRONT PAGE CIRCUIT FRONT PAGE CIRCUIT 0 3 6 9 11 14 17 20 LOAD CURRENT (A) 7130 G04
Load Step (Pulse-Skipping Mode) Inductor Current at Light Load Prebiased Output at 1V
CONTINUOUS V CONDUCTION OUT AC–COUPLED MODE 10A/DIV 100mV/DIV VOUT Burst Mode 500mV/DIV OPERATION 10A/DIV TRACK/SS 500mV/DIV ILOAD VFB 5A/DIV PULSE–SKIP 500mV/DIV 1A TO 15A MODE 10A/DIV 20µs/DIV 7130 G07 10µs/DIV 7130 G08 20ms/DIV 7130 G09 VIN = 12V VIN = 12V VIN = 12V VOUT = 1.5V VOUT = 1.5V VOUT = 1.5V FRONT PAGE CIRCUIT LOAD = 300mA 7130fb For more information www.linear.com/LTC7130 5 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Electrical Characteristics Pin Functions Functional Block Diagram Operation Applications Information Typical Application Related Parts .34579 Applications Typical Application Description Absolute Maximum Ratings Order Information Electrical Characteristics Pin Configuration Pin Functions Functional Block Diagram Operation Applications Information Typical Applications Typical Application Related Parts