Datasheet ADP2380 (Analog Devices) - 7
| 制造商 | Analog Devices |
| 描述 | 20 V, 4 A synchronous Step-Down Regulator with Low-Side Driver |
| 页数 / 页 | 28 / 7 — Data Sheet. ADP2380. TYPICAL PERFORMANCE CHARACTERISTICS. 100. NCY. ICI. … |
| 文件格式/大小 | PDF / 946 Kb |
| 文件语言 | 英语 |
Data Sheet. ADP2380. TYPICAL PERFORMANCE CHARACTERISTICS. 100. NCY. ICI. VOUT = 1.2V. OUT = 1.2V. VOUT = 1.8V. OUT = 1.8V. VOUT = 2.5V
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Data Sheet ADP2380 TYPICAL PERFORMANCE CHARACTERISTICS
TA = 25oC, VIN = 12 V, VOUT = 3.3 V, L = 4.7 µH, COUT = 2 × 100 µF, fSW = 500 kHz, unless otherwise noted.
100 100 95 95 90 90 85 85 %) %) ( 80 ( 80 NCY 75 NCY E 75 E ICI ICI F 70 F F 70 F E E 65 65 V VOUT = 1.2V OUT = 1.2V 60 V 60 VOUT = 1.8V OUT = 1.8V V VOUT = 2.5V OUT = 2.5V 55 INDUCTOR: FDVE1040-3R3M V INDUCTOR: FDVE1040-6R8M VOUT = 3.3V OUT = 3.3V 55 MOSFET: FDS6298 V MOSFET: FDS6298 VOUT = 5V OUT = 5V 50 50 0 0.5 1.5 2.5 3.0 4.0
004
1.0 2.0 3.5 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0
007
OUTPUT CURRENT (A)
09939-
OUTPUT CURRENT (A)
09939- Figure 4. Efficiency at VIN = 12 V, fSW = 500 kHz Figure 7. Efficiency at VIN = 12 V, fSW = 250 kHz
100 100 95 95 90 90 85 85 %) %) ( 80 ( 80 NCY 75 NCY E 75 E ICI ICI F 70 F 70 F F E E V 65 65 OUT = 1.0V VOUT = 1.2V V 60 VOUT = 1.8V 60 OUT = 1.5V V V OUT = 2.5V OUT = 1.8V V 55 INDUCTOR: FDVE1040-4R7M VOUT = 3.3V 55 INDUCTOR: FDVE1040-1R5M OUT = 2.5V MOSFET: FDS6298 V V OUT = 5V MOSFET: FDS6298 OUT = 3.3V 50 50 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0
005
0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0
008
OUTPUT CURRENT (A) OUTPUT CURRENT (A)
09939- 09939- Figure 5. Efficiency at VIN = 18 V, fSW = 500 kHz Figure 8. Efficiency at VIN = 5 V, fSW = 500 kHz
160 3.2 TJ = –40°C TJ = –40°C TJ = +25°C TJ = +25°C 150 TJ = +125°C 3.0 TJ = +125°C 140 (μA) mA) 2.8 ( NT NT 130 2.6 CURRE N CURRE 120 W 2.4 NT DO CE S 110 E 2.2 SHUT UI Q 100 2.0 90 1.8 4 6 8 10 12 14 16 18 20
009
4 6 8 10 12 14 16 18 20
006
INPUT VOLTAGE (V)
09939-
INPUT VOLTAGE (V)
09939- Figure 6. Shutdown Current vs. VIN Figure 9. Quiescent Current vs. VIN Rev. 0 | Page 7 of 28 Document Outline Features Applications Typical Applications Circuit General Description Revision History Specifications Absolute Maximum Ratings Thermal Information ESD Caution Pin Configuration and Function Descriptions Typical Performance Characteristics Functional Block Diagram Theory of Operation Control Scheme Internal Regulator (VREG) Bootstrap Circuitry Low-Side Driver Oscillator Synchronization Enable and Soft Start 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 Voltage Conversion Limitations Inductor Selection Output Capacitor Selection Low-Side Power Device Selection Programming Input Voltage UVLO Compensation Design Compensation Network Between COMP and GND Compensation Network Between COMP and FB ADIsimPower Design Tool Design Example Output Voltage Setting Frequency Setting Inductor Selection Output Capacitor Selection Low-Side MOSFET Selection Compensation Components Soft Start Time Program Input Capacitor Selection Recommended External Components Circuit Board Layout Recommendations Typical Applications Circuits Outline Dimensions Ordering Guide
TA = 25oC, VIN = 12 V, VOUT = 3.3 V, L = 4.7 µH, COUT = 2 × 100 µF, fSW = 500 kHz, unless otherwise noted.
100 100 95 95 90 90 85 85 %) %) ( 80 ( 80 NCY 75 NCY E 75 E ICI ICI F 70 F F 70 F E E 65 65 V VOUT = 1.2V OUT = 1.2V 60 V 60 VOUT = 1.8V OUT = 1.8V V VOUT = 2.5V OUT = 2.5V 55 INDUCTOR: FDVE1040-3R3M V INDUCTOR: FDVE1040-6R8M VOUT = 3.3V OUT = 3.3V 55 MOSFET: FDS6298 V MOSFET: FDS6298 VOUT = 5V OUT = 5V 50 50 0 0.5 1.5 2.5 3.0 4.0
004
1.0 2.0 3.5 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0
007
OUTPUT CURRENT (A)
09939-
OUTPUT CURRENT (A)
09939- Figure 4. Efficiency at VIN = 12 V, fSW = 500 kHz Figure 7. Efficiency at VIN = 12 V, fSW = 250 kHz
100 100 95 95 90 90 85 85 %) %) ( 80 ( 80 NCY 75 NCY E 75 E ICI ICI F 70 F 70 F F E E V 65 65 OUT = 1.0V VOUT = 1.2V V 60 VOUT = 1.8V 60 OUT = 1.5V V V OUT = 2.5V OUT = 1.8V V 55 INDUCTOR: FDVE1040-4R7M VOUT = 3.3V 55 INDUCTOR: FDVE1040-1R5M OUT = 2.5V MOSFET: FDS6298 V V OUT = 5V MOSFET: FDS6298 OUT = 3.3V 50 50 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0
005
0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0
008
OUTPUT CURRENT (A) OUTPUT CURRENT (A)
09939- 09939- Figure 5. Efficiency at VIN = 18 V, fSW = 500 kHz Figure 8. Efficiency at VIN = 5 V, fSW = 500 kHz
160 3.2 TJ = –40°C TJ = –40°C TJ = +25°C TJ = +25°C 150 TJ = +125°C 3.0 TJ = +125°C 140 (μA) mA) 2.8 ( NT NT 130 2.6 CURRE N CURRE 120 W 2.4 NT DO CE S 110 E 2.2 SHUT UI Q 100 2.0 90 1.8 4 6 8 10 12 14 16 18 20
009
4 6 8 10 12 14 16 18 20
006
INPUT VOLTAGE (V)
09939-
INPUT VOLTAGE (V)
09939- Figure 6. Shutdown Current vs. VIN Figure 9. Quiescent Current vs. VIN Rev. 0 | Page 7 of 28 Document Outline Features Applications Typical Applications Circuit General Description Revision History Specifications Absolute Maximum Ratings Thermal Information ESD Caution Pin Configuration and Function Descriptions Typical Performance Characteristics Functional Block Diagram Theory of Operation Control Scheme Internal Regulator (VREG) Bootstrap Circuitry Low-Side Driver Oscillator Synchronization Enable and Soft Start 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 Voltage Conversion Limitations Inductor Selection Output Capacitor Selection Low-Side Power Device Selection Programming Input Voltage UVLO Compensation Design Compensation Network Between COMP and GND Compensation Network Between COMP and FB ADIsimPower Design Tool Design Example Output Voltage Setting Frequency Setting Inductor Selection Output Capacitor Selection Low-Side MOSFET Selection Compensation Components Soft Start Time Program Input Capacitor Selection Recommended External Components Circuit Board Layout Recommendations Typical Applications Circuits Outline Dimensions Ordering Guide