Datasheet ADP2390 (Analog Devices) - 10
| Fabricante | Analog Devices |
| Descripción | 18 V, 12 A Step-Down Regulator with Programmable Current Limit and PFM |
| Páginas / Página | 23 / 10 — ADP2389/ADP2390. Data Sheet. 18.0. RILIM = 59kΩ. 17.5. LD (. HIGH-SIDE R. … |
| Formato / tamaño de archivo | PDF / 786 Kb |
| Idioma del documento | Inglés |
ADP2389/ADP2390. Data Sheet. 18.0. RILIM = 59kΩ. 17.5. LD (. HIGH-SIDE R. SHO. DSON. 17.0. (mΩ. HRE. N O DS. IT T. 16.5. R ET. -LIM. 16.0. LOW-SIDE RDSON
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ADP2389/ADP2390 Data Sheet 30 18.0 RILIM = 59kΩ A) 25 17.5 LD ( ) HIGH-SIDE R SHO 20 DSON 17.0 (mΩ HRE N O DS IT T 15 16.5 R ET -LIM SF NT 10 16.0 MO LOW-SIDE RDSON 5 15.5 PEAK CURRE 0 15.0 –40 –20 0 20 40 60 80 100 120
017
–40 –20 0 20 40 60 80 100 120
020
TEMPERATURE (°C)
12192-
TEMPERATURE (°C)
12192- Figure 17. MOSFET RDSON vs. Temperature Figure 20. Peak Current-Limit Threshold vs. Temperature
520 T VOUT (AC) 510 1 (µS) ANCE I 500 L NDUCT CO 490 SW RANS 4 EA T 480 2 470
021
–40 –20 0 20 40 60 80 100 120
018
CH1 10.0mV BW CH2 10.0V M 2.00µs A CH2 5.40V TEMPERATURE (°C) CH4 5.00A Ω T 50.20%
12192- 12192- Figure 18. EA Transconductance vs. Temperature Figure 21. Continuous Conduction Mode (CCM) Waveform
T T VOUT (AC) EN 1 2 VOUT 1 IL PGOOD 4 3 SW IOUT 2 4 CH1 50.0mV BW CH2 10.0V M 100µs A CH1 –2.00mV
019
CH1 1.00V BW CH2 10.0V BW M1.00ms A CH1 1.08V
022
CH4 2.00A Ω BW T 50.20%
12192-
CH3 5.00V BW CH4 10.0A Ω BW T 50.00%
12192- Figure 19. PFM Mode Waveform (ADP2390) Figure 22. Soft Start with Ful Load Rev. 0 | Page 10 of 23 Document Outline FEATURES APPLICATIONS TYPICAL APPLICATIONS CIRCUIT GENERAL DESCRIPTION TABLE OF CONTENTS REVISION HISTORY DETAILED FUNCTIONAL BLOCK DIAGRAM SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS THERMAL INFORMATION ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS THEORY OF OPERATION CONTROL SCHEME PFM MODE (ADP2390 ONLY) PRECISION ENABLE/SHUTDOWN INTERNAL REGULATOR (VREG) BOOTSTRAP CIRCUITRY OSCILLATOR SOFT START FAST TRANSIENT RESPONSE POWER GOOD PEAK CURRENT-LIMIT AND SHORT-CIRCUIT PROTECTION OVERVOLTAGE PROTECTION (OVP) UNDERVOLTAGE LOCKOUT (UVLO) THERMAL SHUTDOWN APPLICATIONS INFORMATION INPUT CAPACITOR SELECTION OUTPUT VOLTAGE SETTING INDUCTOR SELECTION OUTPUT CAPACITOR SELECTION PROGRAMMING INPUT VOLTAGE UVLO COMPENSATION DESIGN DESIGN EXAMPLE OUTPUT VOLTAGE SETTING FREQUENCY SETTING INDUCTOR SELECTION OUTPUT CAPACITOR SELECTION COMPENSATION COMPONENTS SOFT START TIME PROGRAM INPUT CAPACITOR SELECTION SCHEMATIC FOR DESIGN EXAMPLE EXTERNAL COMPONENTS RECOMMENDATION CIRCUIT BOARD LAYOUT RECOMMENDATIONS TYPICAL APPLICATION CIRCUITS OUTLINE DIMENSIONS ORDERING GUIDE
017
–40 –20 0 20 40 60 80 100 120
020
TEMPERATURE (°C)
12192-
TEMPERATURE (°C)
12192- Figure 17. MOSFET RDSON vs. Temperature Figure 20. Peak Current-Limit Threshold vs. Temperature
520 T VOUT (AC) 510 1 (µS) ANCE I 500 L NDUCT CO 490 SW RANS 4 EA T 480 2 470
021
–40 –20 0 20 40 60 80 100 120
018
CH1 10.0mV BW CH2 10.0V M 2.00µs A CH2 5.40V TEMPERATURE (°C) CH4 5.00A Ω T 50.20%
12192- 12192- Figure 18. EA Transconductance vs. Temperature Figure 21. Continuous Conduction Mode (CCM) Waveform
T T VOUT (AC) EN 1 2 VOUT 1 IL PGOOD 4 3 SW IOUT 2 4 CH1 50.0mV BW CH2 10.0V M 100µs A CH1 –2.00mV
019
CH1 1.00V BW CH2 10.0V BW M1.00ms A CH1 1.08V
022
CH4 2.00A Ω BW T 50.20%
12192-
CH3 5.00V BW CH4 10.0A Ω BW T 50.00%
12192- Figure 19. PFM Mode Waveform (ADP2390) Figure 22. Soft Start with Ful Load Rev. 0 | Page 10 of 23 Document Outline FEATURES APPLICATIONS TYPICAL APPLICATIONS CIRCUIT GENERAL DESCRIPTION TABLE OF CONTENTS REVISION HISTORY DETAILED FUNCTIONAL BLOCK DIAGRAM SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS THERMAL INFORMATION ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS THEORY OF OPERATION CONTROL SCHEME PFM MODE (ADP2390 ONLY) PRECISION ENABLE/SHUTDOWN INTERNAL REGULATOR (VREG) BOOTSTRAP CIRCUITRY OSCILLATOR SOFT START FAST TRANSIENT RESPONSE POWER GOOD PEAK CURRENT-LIMIT AND SHORT-CIRCUIT PROTECTION OVERVOLTAGE PROTECTION (OVP) UNDERVOLTAGE LOCKOUT (UVLO) THERMAL SHUTDOWN APPLICATIONS INFORMATION INPUT CAPACITOR SELECTION OUTPUT VOLTAGE SETTING INDUCTOR SELECTION OUTPUT CAPACITOR SELECTION PROGRAMMING INPUT VOLTAGE UVLO COMPENSATION DESIGN DESIGN EXAMPLE OUTPUT VOLTAGE SETTING FREQUENCY SETTING INDUCTOR SELECTION OUTPUT CAPACITOR SELECTION COMPENSATION COMPONENTS SOFT START TIME PROGRAM INPUT CAPACITOR SELECTION SCHEMATIC FOR DESIGN EXAMPLE EXTERNAL COMPONENTS RECOMMENDATION CIRCUIT BOARD LAYOUT RECOMMENDATIONS TYPICAL APPLICATION CIRCUITS OUTLINE DIMENSIONS ORDERING GUIDE