Datasheet LTM4650A (Analog Devices) - 6
| Hersteller | Analog Devices |
| Beschreibung | Dual 25A or Single 50A DC/DC μModule Regulator with 1% DC Accuracy |
| Seiten / Seite | 38 / 6 — TYPICAL PERFORMANCE CHARACTERISTICS. Burst Mode and Pulse-Skip Mode. … |
| Dateiformat / Größe | PDF / 2.3 Mb |
| Dokumentensprache | Englisch |
TYPICAL PERFORMANCE CHARACTERISTICS. Burst Mode and Pulse-Skip Mode. Efficiency vs Output Current,
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LTM4650A
TYPICAL PERFORMANCE CHARACTERISTICS Burst Mode and Pulse-Skip Mode Efficiency vs Output Current, Efficiency vs Output Current, Efficiency VIN=12V, VOUT = 1.2V, VIN = 5V VIN = 12V fS = 300kHz
100 100 100 90 95 95 80 90 90 70 60 85 85 50 80 80 1.0VOUT, 300kHz 40 EFFICIENCY (%) 1.0VOUT, 300kHz EFFICIENCY (%) 1.2VOUT, 400kHz EFFICIENCY (%) 75 1.2VOUT, 400kHz 1.5V 30 1.5V 75 OUT, 400kHz OUT, 400kHz 1.8V 1.8V OUT, 500kHz OUT, 500kHz 2.5V 20 Burst Mode OPERATION 70 2.5V OUT, 500kHz OUT, 500kHz 70 3.3V 10 PULSE-SKIP MODE 3.3V OUT, 600kHz OUT, 600kHz 5.0VOUT, 750kHz CCM 65 65 0 0 5 10 15 20 25 0 5 10 15 20 25 0.01 0.1 1 10 LOAD CURRENT (A) LOAD CURRENT (A) LOAD CURRENT (mA) 4650A G03 4650A G01 4650A G02
1V Dual Phase Single Output 1.2V Dual Phase Single Output 1.5V Dual Phase Single Output Load Transient Response Load Transient Response Load Transient Response (Ceramic Cap) (Ceramic Cap) (Ceramic Cap)
V V OUT (AC) VOUT (AC) OUT (AC) 50mV/DIV 50mV/DIV 50mV/DIV LOAD STEP LOAD STEP LOAD STEP 10A/DIV 10A/DIV 10A/DIV 50µs/DIV 50µs/DIV 4650A G06 4650A G04 50µs/DIV 4650A G05 12V 12V IN, 1VOUT, 300kHz, 12VIN, 1.2VOUT, 400kHz, IN, 1.5VOUT, 400kHz, DUAL PHASE SINGLE OUTPUT DUAL PHASE SINGLE OUTPUT DUAL PHASE SINGLE OUTPUT 25%, 12.5A LOAD STEP-UP AND 25%, 12.5A LOAD STEP-UP AND 25%, 12.5A LOAD STEP-UP AND STEP-DOWN, 10A/μs SLEW RATE STEP-DOWN, 10A/μs SLEW RATE STEP-DOWN, 10A/μs SLEW RATE C C OUT = 16× 100μF CERAMIC CAP COUT = 16× 100μF CERAMIC CAP OUT = 16× 100μF CERAMIC CAP C C FF = 47pF CFF = 47pF FF = 47pF
1.8V Dual Phase Single Output 2.5V Dual Phase Single Output 3.3V Dual Phase Single Output Load Transient Response Load Transient Response Load Transient Response (Ceramic Cap) (Ceramic Cap) (Ceramic Cap)
VOUT (AC) VOUT (AC) VOUT (AC) 50mV/DIV 50mV/DIV 100mV/DIV LOAD STEP LOAD STEP LOAD STEP 10A/DIV 10A/DIV 10A/DIV 50µs/DIV 4650A G07 50µs/DIV 4650A G08 50µs/DIV 4650A G09 12VIN, 1.8VOUT, 500kHz, 12VIN, 2.5VOUT, 500kHz, 12VIN, 3.3VOUT, 600kHz, DUAL PHASE SINGLE OUTPUT DUAL PHASE SINGLE OUTPUT DUAL PHASE SINGLE OUTPUT 25%, 12.5A LOAD STEP-UP AND 25%, 12.5A LOAD STEP-UP AND 25%, 12.5A LOAD STEP-UP AND STEP-DOWN, 10A/μs SLEW RATE STEP-DOWN, 10A/μs SLEW RATE STEP-DOWN, 10A/μs SLEW RATE COUT = 16× 100μF CERAMIC CAP COUT = 16× 100μF CERAMIC CAP COUT = 16× 100μF CERAMIC CAP CFF = 47pF CFF = 47pF CFF = 47pF 4650afb 6 For more information www.linear.com/LTM4650A
TYPICAL PERFORMANCE CHARACTERISTICS Burst Mode and Pulse-Skip Mode Efficiency vs Output Current, Efficiency vs Output Current, Efficiency VIN=12V, VOUT = 1.2V, VIN = 5V VIN = 12V fS = 300kHz
100 100 100 90 95 95 80 90 90 70 60 85 85 50 80 80 1.0VOUT, 300kHz 40 EFFICIENCY (%) 1.0VOUT, 300kHz EFFICIENCY (%) 1.2VOUT, 400kHz EFFICIENCY (%) 75 1.2VOUT, 400kHz 1.5V 30 1.5V 75 OUT, 400kHz OUT, 400kHz 1.8V 1.8V OUT, 500kHz OUT, 500kHz 2.5V 20 Burst Mode OPERATION 70 2.5V OUT, 500kHz OUT, 500kHz 70 3.3V 10 PULSE-SKIP MODE 3.3V OUT, 600kHz OUT, 600kHz 5.0VOUT, 750kHz CCM 65 65 0 0 5 10 15 20 25 0 5 10 15 20 25 0.01 0.1 1 10 LOAD CURRENT (A) LOAD CURRENT (A) LOAD CURRENT (mA) 4650A G03 4650A G01 4650A G02
1V Dual Phase Single Output 1.2V Dual Phase Single Output 1.5V Dual Phase Single Output Load Transient Response Load Transient Response Load Transient Response (Ceramic Cap) (Ceramic Cap) (Ceramic Cap)
V V OUT (AC) VOUT (AC) OUT (AC) 50mV/DIV 50mV/DIV 50mV/DIV LOAD STEP LOAD STEP LOAD STEP 10A/DIV 10A/DIV 10A/DIV 50µs/DIV 50µs/DIV 4650A G06 4650A G04 50µs/DIV 4650A G05 12V 12V IN, 1VOUT, 300kHz, 12VIN, 1.2VOUT, 400kHz, IN, 1.5VOUT, 400kHz, DUAL PHASE SINGLE OUTPUT DUAL PHASE SINGLE OUTPUT DUAL PHASE SINGLE OUTPUT 25%, 12.5A LOAD STEP-UP AND 25%, 12.5A LOAD STEP-UP AND 25%, 12.5A LOAD STEP-UP AND STEP-DOWN, 10A/μs SLEW RATE STEP-DOWN, 10A/μs SLEW RATE STEP-DOWN, 10A/μs SLEW RATE C C OUT = 16× 100μF CERAMIC CAP COUT = 16× 100μF CERAMIC CAP OUT = 16× 100μF CERAMIC CAP C C FF = 47pF CFF = 47pF FF = 47pF
1.8V Dual Phase Single Output 2.5V Dual Phase Single Output 3.3V Dual Phase Single Output Load Transient Response Load Transient Response Load Transient Response (Ceramic Cap) (Ceramic Cap) (Ceramic Cap)
VOUT (AC) VOUT (AC) VOUT (AC) 50mV/DIV 50mV/DIV 100mV/DIV LOAD STEP LOAD STEP LOAD STEP 10A/DIV 10A/DIV 10A/DIV 50µs/DIV 4650A G07 50µs/DIV 4650A G08 50µs/DIV 4650A G09 12VIN, 1.8VOUT, 500kHz, 12VIN, 2.5VOUT, 500kHz, 12VIN, 3.3VOUT, 600kHz, DUAL PHASE SINGLE OUTPUT DUAL PHASE SINGLE OUTPUT DUAL PHASE SINGLE OUTPUT 25%, 12.5A LOAD STEP-UP AND 25%, 12.5A LOAD STEP-UP AND 25%, 12.5A LOAD STEP-UP AND STEP-DOWN, 10A/μs SLEW RATE STEP-DOWN, 10A/μs SLEW RATE STEP-DOWN, 10A/μs SLEW RATE COUT = 16× 100μF CERAMIC CAP COUT = 16× 100μF CERAMIC CAP COUT = 16× 100μF CERAMIC CAP CFF = 47pF CFF = 47pF CFF = 47pF 4650afb 6 For more information www.linear.com/LTM4650A