Datasheet LTM4647 (Analog Devices) - 5
| Manufacturer | Analog Devices |
| Description | 30A DC/DC Step-Down μModule Regulator |
| Pages / Page | 34 / 5 — TYPICAL PERFORMANCE CHARACTERISTICS. CCM, Burst Mode and Pulse-. … |
| File Format / Size | PDF / 1.1 Mb |
| Document Language | English |
TYPICAL PERFORMANCE CHARACTERISTICS. CCM, Burst Mode and Pulse-. Efficiency vs Output Current,
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LTM4647
TYPICAL PERFORMANCE CHARACTERISTICS CCM, Burst Mode and Pulse- Efficiency vs Output Current, Efficiency vs Output Current, Skipping Mode Efficiency VIN = VIN = 5V VIN = 12V 12V, VOUT = 1.2V, 500kHz
100 100 100 90 95 95 80 90 90 70 85 85 60 50 80 80 40 EFFICIENCY (%) 0.8VOUT, 400kHz EFFICIENCY (%) 0.8VOUT, 400kHz EFFICIENCY (%) 75 1VOUT, 500kHz 75 1VOUT, 500kHz 30 1.2VOUT, 500kHz 1.2VOUT, 500kHz 20 CCM 70 1.5VOUT, 600kHz 70 1.5VOUT, 600kHz Burst Mode OPERATION 10 1.8VOUT, 700kHz 1.8VOUT, 700kHz PULSE-SKIPPING MODE 65 65 0 0 5 10 15 20 25 30 0 5 10 15 20 25 30 0.1 1 10 100 LOAD CURRENT (A) LOAD CURRENT (A) LOAD CURRENT (A) 4647 G01 4647 G02 4647 G03
0.8V Output Load Stop Transient 1V Output Load Step Transient 1.2V Output Load Step Transient Response Response Response
SW SW SW 20V/DIV 20V/DIV 20V/DIV V V OUT OUT VOUT 50mV/DIV 50mV/DIV 50mV/DIV AC-COUPLED AC-COUPLED AC-COUPLED LOAD STEP LOAD STEP LOAD STEP 10A/DIV 10A/DIV 10A/DIV 4647 G04 20µs/DIV 4647 G05 20µs/DIV 4647 G06 20µs/DIV VIN = 12V, VOUT = 0.8V, FS = 400kHz VIN = 12V, VOUT = 1V, FS = 500kHz VIN = 12V, VOUT = 1.2V, FS = 500kHz COUT = 6 × 100µF CERAMIC COUT = 6 × 100µF CERAMIC COUT = 6 × 100µF CERAMIC 0A to 7.5A LOAD STEP, 10A/µs 0A to 7.5A LOAD STEP, 10A/µs 0A to 7.5A LOAD STEP, 10A/µs
1.5V Output Load Step Transient 1.8V Output Load Step Transient Response Response
SW SW 20V/DIV 20V/DIV VOUT VOUT 50mV/DIV 50mV/DIV AC-COUPLED AC-COUPLED LOAD STEP LOAD STEP 10A/DIV 10A/DIV 4647 G07 20µs/DIV 4647 G08 20µs/DIV VIN = 12V, VOUT = 1.5V, FS = 600kHz VIN = 12V, VOUT = 1.8V, FS = 700kHz COUT = 6 × 100µF CERAMIC COUT = 6 × 100µF CERAMIC 0A to 7.5A LOAD STEP, 10A/µs 0A to 7.5A LOAD STEP, 10A/µs 4647fb For more information www.linear.com/LTM4647 5 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Decoupling Requirements Operation Applications Information Typical Applications
TYPICAL PERFORMANCE CHARACTERISTICS CCM, Burst Mode and Pulse- Efficiency vs Output Current, Efficiency vs Output Current, Skipping Mode Efficiency VIN = VIN = 5V VIN = 12V 12V, VOUT = 1.2V, 500kHz
100 100 100 90 95 95 80 90 90 70 85 85 60 50 80 80 40 EFFICIENCY (%) 0.8VOUT, 400kHz EFFICIENCY (%) 0.8VOUT, 400kHz EFFICIENCY (%) 75 1VOUT, 500kHz 75 1VOUT, 500kHz 30 1.2VOUT, 500kHz 1.2VOUT, 500kHz 20 CCM 70 1.5VOUT, 600kHz 70 1.5VOUT, 600kHz Burst Mode OPERATION 10 1.8VOUT, 700kHz 1.8VOUT, 700kHz PULSE-SKIPPING MODE 65 65 0 0 5 10 15 20 25 30 0 5 10 15 20 25 30 0.1 1 10 100 LOAD CURRENT (A) LOAD CURRENT (A) LOAD CURRENT (A) 4647 G01 4647 G02 4647 G03
0.8V Output Load Stop Transient 1V Output Load Step Transient 1.2V Output Load Step Transient Response Response Response
SW SW SW 20V/DIV 20V/DIV 20V/DIV V V OUT OUT VOUT 50mV/DIV 50mV/DIV 50mV/DIV AC-COUPLED AC-COUPLED AC-COUPLED LOAD STEP LOAD STEP LOAD STEP 10A/DIV 10A/DIV 10A/DIV 4647 G04 20µs/DIV 4647 G05 20µs/DIV 4647 G06 20µs/DIV VIN = 12V, VOUT = 0.8V, FS = 400kHz VIN = 12V, VOUT = 1V, FS = 500kHz VIN = 12V, VOUT = 1.2V, FS = 500kHz COUT = 6 × 100µF CERAMIC COUT = 6 × 100µF CERAMIC COUT = 6 × 100µF CERAMIC 0A to 7.5A LOAD STEP, 10A/µs 0A to 7.5A LOAD STEP, 10A/µs 0A to 7.5A LOAD STEP, 10A/µs
1.5V Output Load Step Transient 1.8V Output Load Step Transient Response Response
SW SW 20V/DIV 20V/DIV VOUT VOUT 50mV/DIV 50mV/DIV AC-COUPLED AC-COUPLED LOAD STEP LOAD STEP 10A/DIV 10A/DIV 4647 G07 20µs/DIV 4647 G08 20µs/DIV VIN = 12V, VOUT = 1.5V, FS = 600kHz VIN = 12V, VOUT = 1.8V, FS = 700kHz COUT = 6 × 100µF CERAMIC COUT = 6 × 100µF CERAMIC 0A to 7.5A LOAD STEP, 10A/µs 0A to 7.5A LOAD STEP, 10A/µs 4647fb For more information www.linear.com/LTM4647 5 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Decoupling Requirements Operation Applications Information Typical Applications
