Datasheet LTC7151S (Analog Devices) - 6
| Hersteller | Analog Devices |
| Beschreibung | 20V, 15A Synchronous Step-Down Silent Switcher 2 Regulator |
| Seiten / Seite | 20 / 6 — TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, VIN = 12V, VOUT = 1.0V, … |
| Dateiformat / Größe | PDF / 2.8 Mb |
| Dokumentensprache | Englisch |
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, VIN = 12V, VOUT = 1.0V, unless. otherwise noted
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LTC7151S
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, VIN = 12V, VOUT = 1.0V, unless otherwise noted. Discontinuous Conduction Mode Continuous Conduction Mode Operation Operation Transient Response, DCM
CLKOUT VOUT 5V/DIV AC–COUPLED 50mV/DIV SW 5V/DIV SW 10V/DIV I I L L 2A/DIV IL 10A/DIV 5A/DIV 7151S G21 1µs/DIV 7151S G19 500ns/DIV 7151S G20 20µs/DIV VIN = 12V, VOUT = 1V VIN = 12V, VOUT = 1V VIN = 12V, VOUT = 1V IOUT = 1A, L = 0.15µH, fSW = 1MHz IOUT = 0A, L = 0.15µH, fSW = 1MHz IOUT = 0.6A to 15A, L = 0.15µH, fSW = 1MHz RITH = 22.1kΩ, CITH = 220pF, CITHP = 22pF RFB1 = 10kΩ, RFB2 = 10kΩ COUT = 100µF + 2 × 330µF
Transient Response, CCM Start-Up Waveform, DCM Start-Up Waveform, CCM
VOUT VRUN VRUN AC–COUPLED 2V/DIV 2V/DIV 50mV/DIV VPGOOD VPGOOD 5V/DIV 5V/DIV VOUT VOUT 1V/DIV 1V/DIV IL IL IL 10A/DIV 5A/DIV 5A/DIV 20µs/DIV 7151S G22 7151S G24 2ms/DIV 7151S G23 2ms/DIV VIN = 12V, VOUT = 1V VIN = 12V, CTRACK/SS = 0.1µF VIN = 12V, CTRACK/SS = 0.1µF IOUT = 0.6A to 15A, L = 0.15µH, fSW = 1MHz ROUT = 60Ω, L = 0.15µH, f SW = 1MHz ROUT = 60Ω, L = 0.15µH, fSW = 1MHz RITH = 22.1kΩ, CITH = 220pF, CITHP = 22pF RFB1 = 10kΩ, RFB2 = 10kΩ RFB1 = 10kΩ, RFB2 = 10kΩ RFB1 = 10kΩ, RFB2 = 10kΩ COUT = 100µF + 2 × 330µF COUT = 100µF + 2 × 330µF COUT = 100µF + 2 × 330µF
Start-Up with Pre-Biased Output, Start-Up with Pre-Biased Output, DCM CCM Output Tracking
VRUN 2V/DIV VRUN 2V/DIV VPGOOD V V TRACK/SS 5V/DIV PGOOD 500mV/DIV 5V/DIV VOUT V 1V/DIV OUT VOUT 1V/DIV 1V/DIV IL I 5A/DIV L IL 10A/DIV 5A/DIV 2ms/DIV 7151S G25 7151S G27 2ms/DIV 7151S G26 500µs/DIV VIN = 12V, CTRACK/SS = 0.1µF V I V IN = 12V, ROUT = 0.1Ω OUT = 0A, L = 0.15µH, fSW = 1MHz IN = 12V, CTRACK/SS = 0.1µF R R I FB1 = 10kΩ, RFB2 = 10kΩ FB1 = 10kΩ, RFB2 = 10kΩ OUT = 0A, L = 0.15µH, fSW = 1MHz V C R TRACK/SS = 0V to 1V OUT = 100µF + 2 × 330µF FB1 = 10kΩ, RFB2 = 10kΩ COUT = 100µF + 2 × 330µF Rev. 0 6 For more information www.analog.com Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Electrical Characteristics Pin Configuration Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Typical Applications Package Photo Typical Application Related Parts
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, VIN = 12V, VOUT = 1.0V, unless otherwise noted. Discontinuous Conduction Mode Continuous Conduction Mode Operation Operation Transient Response, DCM
CLKOUT VOUT 5V/DIV AC–COUPLED 50mV/DIV SW 5V/DIV SW 10V/DIV I I L L 2A/DIV IL 10A/DIV 5A/DIV 7151S G21 1µs/DIV 7151S G19 500ns/DIV 7151S G20 20µs/DIV VIN = 12V, VOUT = 1V VIN = 12V, VOUT = 1V VIN = 12V, VOUT = 1V IOUT = 1A, L = 0.15µH, fSW = 1MHz IOUT = 0A, L = 0.15µH, fSW = 1MHz IOUT = 0.6A to 15A, L = 0.15µH, fSW = 1MHz RITH = 22.1kΩ, CITH = 220pF, CITHP = 22pF RFB1 = 10kΩ, RFB2 = 10kΩ COUT = 100µF + 2 × 330µF
Transient Response, CCM Start-Up Waveform, DCM Start-Up Waveform, CCM
VOUT VRUN VRUN AC–COUPLED 2V/DIV 2V/DIV 50mV/DIV VPGOOD VPGOOD 5V/DIV 5V/DIV VOUT VOUT 1V/DIV 1V/DIV IL IL IL 10A/DIV 5A/DIV 5A/DIV 20µs/DIV 7151S G22 7151S G24 2ms/DIV 7151S G23 2ms/DIV VIN = 12V, VOUT = 1V VIN = 12V, CTRACK/SS = 0.1µF VIN = 12V, CTRACK/SS = 0.1µF IOUT = 0.6A to 15A, L = 0.15µH, fSW = 1MHz ROUT = 60Ω, L = 0.15µH, f SW = 1MHz ROUT = 60Ω, L = 0.15µH, fSW = 1MHz RITH = 22.1kΩ, CITH = 220pF, CITHP = 22pF RFB1 = 10kΩ, RFB2 = 10kΩ RFB1 = 10kΩ, RFB2 = 10kΩ RFB1 = 10kΩ, RFB2 = 10kΩ COUT = 100µF + 2 × 330µF COUT = 100µF + 2 × 330µF COUT = 100µF + 2 × 330µF
Start-Up with Pre-Biased Output, Start-Up with Pre-Biased Output, DCM CCM Output Tracking
VRUN 2V/DIV VRUN 2V/DIV VPGOOD V V TRACK/SS 5V/DIV PGOOD 500mV/DIV 5V/DIV VOUT V 1V/DIV OUT VOUT 1V/DIV 1V/DIV IL I 5A/DIV L IL 10A/DIV 5A/DIV 2ms/DIV 7151S G25 7151S G27 2ms/DIV 7151S G26 500µs/DIV VIN = 12V, CTRACK/SS = 0.1µF V I V IN = 12V, ROUT = 0.1Ω OUT = 0A, L = 0.15µH, fSW = 1MHz IN = 12V, CTRACK/SS = 0.1µF R R I FB1 = 10kΩ, RFB2 = 10kΩ FB1 = 10kΩ, RFB2 = 10kΩ OUT = 0A, L = 0.15µH, fSW = 1MHz V C R TRACK/SS = 0V to 1V OUT = 100µF + 2 × 330µF FB1 = 10kΩ, RFB2 = 10kΩ COUT = 100µF + 2 × 330µF Rev. 0 6 For more information www.analog.com Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Electrical Characteristics Pin Configuration Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Typical Applications Package Photo Typical Application Related Parts