Datasheet LTM4637 (Analog Devices) - 5
| Manufacturer | Analog Devices |
| Description | 20A DC/DC µModule Step-Down Regulator |
| Pages / Page | 30 / 5 — Typical perForMance characTerisTics. Efficiency vs Load Current. … |
| File Format / Size | PDF / 624 Kb |
| Document Language | English |
Typical perForMance characTerisTics. Efficiency vs Load Current. Efficiency vs Load Current with. with 5VIN
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LTM4637
Typical perForMance characTerisTics Efficiency vs Load Current Efficiency vs Load Current with Efficiency vs Load Current with with 5VIN 8VIN (Limit 5V Output to 15A) 12VIN (Limit 5V Output to 15A)
100 100 100 95 95 95 90 90 90 85 85 85 80 80 1VOUT, 250kHz, CCM 80 1VOUT, 250kHz, CCM EFFICIENCY (%) 1VOUT, 250kHz, CCM EFFICIENCY (%) 1.2VOUT, 250kHz, CCM EFFICIENCY (%) 1.2VOUT, 250kHz, CCM 75 1.2VOUT, 250kHz, CCM 75 1.5VOUT, 350kHz, CCM 75 1.5VOUT, 350kHz, CCM 1.5VOUT, 350kHz, CCM 1.8VOUT, 350kHz, CCM 1.8VOUT, 350kHz, CCM 70 1.8VOUT, 350kHz, CCM 2.5VOUT, 450kHz, CCM 2.5VOUT, 450kHz, CCM 2.5V 70 70 OUT, 450kHz, CCM 3.3VOUT, 600kHz, CCM 3.3VOUT, 600kHz, CCM 3.3VOUT, 600kHz, CCM 5VOUT, 600kHz, CCM 5VOUT, 600kHz, CCM 65 65 65 0 2 4 6 8 10 12 14 16 18 20 0 2 4 6 8 10 12 14 16 18 20 0 2 4 6 8 10 12 14 16 18 20 LOAD CURRENT (A) LOAD CURRENT (A) LOAD CURRENT (A) 4637 G01 4637 G02 4637 G03
Burst Mode Efficiency Pulse-Skipping Mode Efficiency vs Load Current vs Load Current 1V Transient Response
95 95 OUTPUT 90 90 TRANSIENT 50mV/DIV 85 200µs/DIV 85 80 LOAD STEP 80 5A/DIV 75 EFFICIENCY (%) 75 EFFICIENCY (%) 70 V 4637 G06 IN = 12V 200µs/DIV VOUT = 1V 70 5VIN, 1.8VOUT, 350kHz 5VIN, 1.8VOUT, 350k IOUT = 0A TO 10A, CFF = 330pF 8V 65 IN, 1.8VOUT, 350kHz 8VIN, 1.8VOUT, 350k OUTPUT CAPACITORS: 12VIN, 1.8VOUT, 350kHz 12VIN, 1.8VOUT, 350k 3 × 470µF POSCAP CAPACITORS 65 60 2 × 100µF CERAMIC CAPACITORS 0 0.5 1 1.5 2 2.5 3 0 0.5 1 1.5 2 2.5 3 LOAD CURRENT (A) LOAD CURRENT (A) 4637 G04 4637 G05
1.2V Transient Response 1.5V Transient Response 1.8V Transient Response
OUTPUT OUTPUT OUTPUT TRANSIENT TRANSIENT TRANSIENT 50mV/DIV 50mV/DIV 50mV/DIV 200µs/DIV 200µs/DIV 200µs/DIV LOAD STEP LOAD STEP LOAD STEP 5A/DIV 5A/DIV 5A/DIV V 4637 G07 4637 G08 4637 G09 IN = 12V 200µs/DIV VIN = 12V 200µs/DIV VIN = 12V 200µs/DIV VOUT = 1.2V VOUT = 1.5V VOUT = 1.8V IOUT = 0A TO 10A, CFF = 330pF IOUT = 0A TO 10A, CFF = 330pF IOUT = 0A TO 10A, CFF = 330pF OUTPUT CAPACITORS: OUTPUT CAPACITORS: OUTPUT CAPACITORS: 3 × 470µF POSCAP CAPACITORS 3 × 470µF POSCAP CAPACITORS 3 × 470µF POSCAP CAPACITORS 2 × 100µF CERAMIC CAPACITORS 2 × 100µF CERAMIC CAPACITORS 2 × 100µF CERAMIC CAPACITORS 4637fc For more information www.linear.com/LTM4637 5 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Decoupling Requirements Operation Applications Information Typical Applications Package Description Package PHOTO Typical Application Related Parts Design Resources
Typical perForMance characTerisTics Efficiency vs Load Current Efficiency vs Load Current with Efficiency vs Load Current with with 5VIN 8VIN (Limit 5V Output to 15A) 12VIN (Limit 5V Output to 15A)
100 100 100 95 95 95 90 90 90 85 85 85 80 80 1VOUT, 250kHz, CCM 80 1VOUT, 250kHz, CCM EFFICIENCY (%) 1VOUT, 250kHz, CCM EFFICIENCY (%) 1.2VOUT, 250kHz, CCM EFFICIENCY (%) 1.2VOUT, 250kHz, CCM 75 1.2VOUT, 250kHz, CCM 75 1.5VOUT, 350kHz, CCM 75 1.5VOUT, 350kHz, CCM 1.5VOUT, 350kHz, CCM 1.8VOUT, 350kHz, CCM 1.8VOUT, 350kHz, CCM 70 1.8VOUT, 350kHz, CCM 2.5VOUT, 450kHz, CCM 2.5VOUT, 450kHz, CCM 2.5V 70 70 OUT, 450kHz, CCM 3.3VOUT, 600kHz, CCM 3.3VOUT, 600kHz, CCM 3.3VOUT, 600kHz, CCM 5VOUT, 600kHz, CCM 5VOUT, 600kHz, CCM 65 65 65 0 2 4 6 8 10 12 14 16 18 20 0 2 4 6 8 10 12 14 16 18 20 0 2 4 6 8 10 12 14 16 18 20 LOAD CURRENT (A) LOAD CURRENT (A) LOAD CURRENT (A) 4637 G01 4637 G02 4637 G03
Burst Mode Efficiency Pulse-Skipping Mode Efficiency vs Load Current vs Load Current 1V Transient Response
95 95 OUTPUT 90 90 TRANSIENT 50mV/DIV 85 200µs/DIV 85 80 LOAD STEP 80 5A/DIV 75 EFFICIENCY (%) 75 EFFICIENCY (%) 70 V 4637 G06 IN = 12V 200µs/DIV VOUT = 1V 70 5VIN, 1.8VOUT, 350kHz 5VIN, 1.8VOUT, 350k IOUT = 0A TO 10A, CFF = 330pF 8V 65 IN, 1.8VOUT, 350kHz 8VIN, 1.8VOUT, 350k OUTPUT CAPACITORS: 12VIN, 1.8VOUT, 350kHz 12VIN, 1.8VOUT, 350k 3 × 470µF POSCAP CAPACITORS 65 60 2 × 100µF CERAMIC CAPACITORS 0 0.5 1 1.5 2 2.5 3 0 0.5 1 1.5 2 2.5 3 LOAD CURRENT (A) LOAD CURRENT (A) 4637 G04 4637 G05
1.2V Transient Response 1.5V Transient Response 1.8V Transient Response
OUTPUT OUTPUT OUTPUT TRANSIENT TRANSIENT TRANSIENT 50mV/DIV 50mV/DIV 50mV/DIV 200µs/DIV 200µs/DIV 200µs/DIV LOAD STEP LOAD STEP LOAD STEP 5A/DIV 5A/DIV 5A/DIV V 4637 G07 4637 G08 4637 G09 IN = 12V 200µs/DIV VIN = 12V 200µs/DIV VIN = 12V 200µs/DIV VOUT = 1.2V VOUT = 1.5V VOUT = 1.8V IOUT = 0A TO 10A, CFF = 330pF IOUT = 0A TO 10A, CFF = 330pF IOUT = 0A TO 10A, CFF = 330pF OUTPUT CAPACITORS: OUTPUT CAPACITORS: OUTPUT CAPACITORS: 3 × 470µF POSCAP CAPACITORS 3 × 470µF POSCAP CAPACITORS 3 × 470µF POSCAP CAPACITORS 2 × 100µF CERAMIC CAPACITORS 2 × 100µF CERAMIC CAPACITORS 2 × 100µF CERAMIC CAPACITORS 4637fc For more information www.linear.com/LTM4637 5 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Decoupling Requirements Operation Applications Information Typical Applications Package Description Package PHOTO Typical Application Related Parts Design Resources
