Datasheet LTC3829 (Analog Devices) - 6
| 制造商 | Analog Devices |
| 描述 | 3-Phase, Single Output Synchronous Step-Down DC/DC Controller with Diffamp |
| 页数 / 页 | 40 / 6 — TYPICAL PERFORMANCE CHARACTERISTICS. Phase Shedding Transition. Prebiased … |
| 修订版 | E |
| 文件格式/大小 | PDF / 960 Kb |
| 文件语言 | 英语 |
TYPICAL PERFORMANCE CHARACTERISTICS. Phase Shedding Transition. Prebiased Output at 2V. Coincident Tracking
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LTC3829
TYPICAL PERFORMANCE CHARACTERISTICS Phase Shedding Transition Phase Shedding Transition
VSW1 VSW1 10V/DIV 10V/DIV VSW2 V 10V/DIV SW2 10V/DIV VSW3 10V/DIV VSW3 10V/DIV VOUT VOUT 50mV/DIV 50mV/DIV AC-COUPLED AC-COUPLED V 3829 G03 3829 G04 IN = 12V 4µs/DIV VIN = 12V 4µs/DIV VOUT = 1.5V VOUT = 1.5V TRANSITION LOAD CURRENT = 18.6A TRANSITION LOAD CURRENT = 5.3A
Prebiased Output at 2V Coincident Tracking
RUN VOUT 2V/DIV VOUT1 1V/DIV VOUT1 = 3.3V VOUT2 = 1.5V 1V/DIV VOUT2 VFB 500mV/DIV TK/SS 500mV/DIV V 3829 G05 IN = 12V 2ms/DIV V 3829 G06 IN = 12V 2ms/DIV VOUT = 3.3V NO LOAD
Quiescent Current vs Input Current Sense Threshold Voltage without EXTVCC INTVCC Line Regulation vs ITH Voltage
5.5 5.25 80 5.00 5.3 ILIM = INTVCC 4.75 60 5.1 4.50 I 4.9 4.25 LIM = FLOAT 40 4.7 4.00 TAGE (V) 3.75 (mV) 4.5 20 VOL 3.50 I 4.3 V CC 3.25 V SENSE LIM = GND 4.1 INT 3.00 0 SUPPLY CURRENT (mA) 2.75 3.9 2.50 –20 3.7 2.25 3.5 2.00 –40 4 14 24 34 40 0 5 10 15 20 25 30 35 40 0 0.5 1 1.5 2 INPUT VOLTAGE (V) INPUT VOLTAGE (V) VITH (V) 3829 G08 3829 G09 3829 G10 Rev. E 6 For more information www.analog.com Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Functional Diagram Operation Applications Information Typical Application Package Description Revision History Typical Application Related Parts
TYPICAL PERFORMANCE CHARACTERISTICS Phase Shedding Transition Phase Shedding Transition
VSW1 VSW1 10V/DIV 10V/DIV VSW2 V 10V/DIV SW2 10V/DIV VSW3 10V/DIV VSW3 10V/DIV VOUT VOUT 50mV/DIV 50mV/DIV AC-COUPLED AC-COUPLED V 3829 G03 3829 G04 IN = 12V 4µs/DIV VIN = 12V 4µs/DIV VOUT = 1.5V VOUT = 1.5V TRANSITION LOAD CURRENT = 18.6A TRANSITION LOAD CURRENT = 5.3A
Prebiased Output at 2V Coincident Tracking
RUN VOUT 2V/DIV VOUT1 1V/DIV VOUT1 = 3.3V VOUT2 = 1.5V 1V/DIV VOUT2 VFB 500mV/DIV TK/SS 500mV/DIV V 3829 G05 IN = 12V 2ms/DIV V 3829 G06 IN = 12V 2ms/DIV VOUT = 3.3V NO LOAD
Quiescent Current vs Input Current Sense Threshold Voltage without EXTVCC INTVCC Line Regulation vs ITH Voltage
5.5 5.25 80 5.00 5.3 ILIM = INTVCC 4.75 60 5.1 4.50 I 4.9 4.25 LIM = FLOAT 40 4.7 4.00 TAGE (V) 3.75 (mV) 4.5 20 VOL 3.50 I 4.3 V CC 3.25 V SENSE LIM = GND 4.1 INT 3.00 0 SUPPLY CURRENT (mA) 2.75 3.9 2.50 –20 3.7 2.25 3.5 2.00 –40 4 14 24 34 40 0 5 10 15 20 25 30 35 40 0 0.5 1 1.5 2 INPUT VOLTAGE (V) INPUT VOLTAGE (V) VITH (V) 3829 G08 3829 G09 3829 G10 Rev. E 6 For more information www.analog.com Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Functional Diagram Operation Applications Information Typical Application Package Description Revision History Typical Application Related Parts