Datasheet LT8582 (Analog Devices) - 5
| Manufacturer | Analog Devices |
| Description | Dual 3A Boost/Inverting/SEPIC DC/DC Converter with Fault Protection |
| Pages / Page | 36 / 5 — TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted. … |
| File Format / Size | PDF / 460 Kb |
| Document Language | English |
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted. Switch Current Limit vs Duty Cycle
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Text Version of Document
LT8582
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted. Switch Current Limit vs Duty Cycle Switch Saturation Voltage Switch Current Sharing
5 350 1.0 VSW1 = VSW2 0.9 300 4 0.8 250 0.7 3 0.6 200 (A/A) 0.5 SWA/I 150 2 0.4 I SWB 0.3 100 SWA + SWB CURRENT (A) 1 SATURATION VOLTAGE (mV) 0.2 50 0.1 0 0 0 10 20 30 40 50 60 70 80 90 0 0.5 1 1.5 2 2.5 3 3.5 0 0.5 1 1.5 2 2.5 3 3.5 DUTY CYCLE (%) SWA + SWB CURRENT (A) SWA CURRENT (A) 8582 G02 8582 G03 8582 G01
Switch Current Limit at Minimum Commanded Current Limit vs Duty Cycle SS Voltage CLKOUT Duty Cycle
5 5 100 4 4 80 CHANNEL 2 3 3 60 CHANNEL 1 2 2 40 SWA + SWB CURRENT (A) SWA + SWB CURRENT (A) CLKOUT DUTY CYCLE (%) 1 1 20 0 0 0 –50 –25 0 25 50 75 100 125 150 0 0.2 0.4 0.6 0.8 1 1.2 –50 –25 0 25 50 75 100 125 150 TEMPERATURE (°C) SS VOLTAGE (V) TEMPERATURE (°C) 8582 G04 8582 G05 8582 G06
Switching Frequency During Oscillator Frequency Soft-Start Gate Pin Current (VSS = 2.1V)
) 3.0 1 1100 NOM 2.8 /f 1000 2.6 SW 900 2.4 RT = 31.6k 2.2 800 2.0 700 1.8 600 1.6 1/2 1.4 500 1.2 400 FREQUENCY (MHz) 1.0 1/3 0.8 1/4 GATE PIN CURRENT (μA) 300 0.6 1/5 200 TA = –40°C 0.4 RT = 402k INVERTING NONINVERTING T 100 A = 25°C 0.2 CONFIGURATIONS CONFIGURATIONS TA = 125°C 0.0 0 –50 –25 0 25 50 75 100 125 150 NORMALIZED OSCILLATOR FREQUENCY (f 0 0.2 0.4 0.6 0.8 1 1.2 0 10 20 30 40 50 60 TEMPERATURE (°C) FBX VOLTAGE (V) GATE PIN VOLTAGE (V) 8582 G07 8582 G08 8582 G09 8582f 5 Document Outline FEATURES DESCRIPTION APPLICATIONS TYPICAL APPLICATION ABSOLUTE MAXIMUM RATINGS PIN CONFIGURATION ORDER INFORMATION ELECTRICAL CHARACTERISTICS TYPICAL PERFORMANCE CHARACTERISTICS PIN FUNCTIONS BLOCK DIAGRAM STATE DIAGRAM OPERATION APPLICATIONS INFORMATION APPENDIX TYPICAL APPLICATIONS PACKAGE DESCRIPTION TYPICAL APPLICATION RELATED PARTS
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted. Switch Current Limit vs Duty Cycle Switch Saturation Voltage Switch Current Sharing
5 350 1.0 VSW1 = VSW2 0.9 300 4 0.8 250 0.7 3 0.6 200 (A/A) 0.5 SWA/I 150 2 0.4 I SWB 0.3 100 SWA + SWB CURRENT (A) 1 SATURATION VOLTAGE (mV) 0.2 50 0.1 0 0 0 10 20 30 40 50 60 70 80 90 0 0.5 1 1.5 2 2.5 3 3.5 0 0.5 1 1.5 2 2.5 3 3.5 DUTY CYCLE (%) SWA + SWB CURRENT (A) SWA CURRENT (A) 8582 G02 8582 G03 8582 G01
Switch Current Limit at Minimum Commanded Current Limit vs Duty Cycle SS Voltage CLKOUT Duty Cycle
5 5 100 4 4 80 CHANNEL 2 3 3 60 CHANNEL 1 2 2 40 SWA + SWB CURRENT (A) SWA + SWB CURRENT (A) CLKOUT DUTY CYCLE (%) 1 1 20 0 0 0 –50 –25 0 25 50 75 100 125 150 0 0.2 0.4 0.6 0.8 1 1.2 –50 –25 0 25 50 75 100 125 150 TEMPERATURE (°C) SS VOLTAGE (V) TEMPERATURE (°C) 8582 G04 8582 G05 8582 G06
Switching Frequency During Oscillator Frequency Soft-Start Gate Pin Current (VSS = 2.1V)
) 3.0 1 1100 NOM 2.8 /f 1000 2.6 SW 900 2.4 RT = 31.6k 2.2 800 2.0 700 1.8 600 1.6 1/2 1.4 500 1.2 400 FREQUENCY (MHz) 1.0 1/3 0.8 1/4 GATE PIN CURRENT (μA) 300 0.6 1/5 200 TA = –40°C 0.4 RT = 402k INVERTING NONINVERTING T 100 A = 25°C 0.2 CONFIGURATIONS CONFIGURATIONS TA = 125°C 0.0 0 –50 –25 0 25 50 75 100 125 150 NORMALIZED OSCILLATOR FREQUENCY (f 0 0.2 0.4 0.6 0.8 1 1.2 0 10 20 30 40 50 60 TEMPERATURE (°C) FBX VOLTAGE (V) GATE PIN VOLTAGE (V) 8582 G07 8582 G08 8582 G09 8582f 5 Document Outline FEATURES DESCRIPTION APPLICATIONS TYPICAL APPLICATION ABSOLUTE MAXIMUM RATINGS PIN CONFIGURATION ORDER INFORMATION ELECTRICAL CHARACTERISTICS TYPICAL PERFORMANCE CHARACTERISTICS PIN FUNCTIONS BLOCK DIAGRAM STATE DIAGRAM OPERATION APPLICATIONS INFORMATION APPENDIX TYPICAL APPLICATIONS PACKAGE DESCRIPTION TYPICAL APPLICATION RELATED PARTS
