Datasheet LTM4646 (Analog Devices)
| 制造商 | Analog Devices |
| 描述 | Dual 10A or Single 20A μModule Regulator |
| 页数 / 页 | 36 / 1 — FEATURES. DESCRIPTION. Dual 10A or Single 20A Output. Wide Input Voltage … |
| 修订版 | A |
| 文件格式/大小 | PDF / 1.0 Mb |
| 文件语言 | 英语 |
FEATURES. DESCRIPTION. Dual 10A or Single 20A Output. Wide Input Voltage Range: 4.5V to 20V. 2.375VMIN with CPWR Bias
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LTM4646 Dual 10A or Single 20A µModule Regulator
FEATURES DESCRIPTION
n
Dual 10A or Single 20A Output
The LTM®4646 is a complete dual 10A output switching n
Wide Input Voltage Range: 4.5V to 20V
mode DC/DC power supply. Included in the package are n
2.375VMIN with CPWR Bias
the switching controller, power FETs, inductors, and all n
Output Voltage Range: 0.6V to 5.5V
supporting components. Operating from an input voltage n
±1.5% Maximum Total DC Output Error
range of 4.5V to 20V, the LTM4646 supports two outputs n
Multiphase Current Sharing
each with an output voltage range of 0.6V to 5.5V, set by n Differential Remote Sense Amplifier, Each Channel external resistors. Its high efficiency design delivers up to n Current Mode Control/Fast Transient Response 10A continuous current for each output. Only a few input n Up to 96% Efficiency and output capacitors are needed. n Adjustable Switching Frequency (250kHz to 1.3MHz) The device supports frequency synchronization, multiphase n Frequency Synchronization operation, high efficiency light load operation and output n Overcurrent Foldback Protection voltage tracking for supply rail sequencing and has an n Output Overvoltage Protection onboard temperature diode per channel for device tempera- n Internal or External Compensation ture monitoring. High switching frequency and a current n Built-In Temperature Monitoring Diode mode architecture enable a very fast transient response to n SnPb or RoHS Compliant Finish line and load changes without sacrificing stability. n 11.25mm × 15mm × 5.01mm BGA Package Fault protection features include overvoltage and overcur-
APPLICATIONS
rent protection. The power module is offered in a small n Point-of-Load Power Supplies footprint 11.25mm × 15mm × 5.01mm BGA package. n Telecom and Networking Equipment The LTM4646 is available with SnPb or RoHS compliant n Industrial Equipment terminal finish. n All registered trademarks and trademarks are the property of their respective owners. Protected Medical Equipment by U.S. patents, including 5481178, 5847554, 6580258, 6304066, 6476589, 6774611.
TYPICAL APPLICATION Efficiency, 12V to 0.9V, 1.2V at 10A Each
VIN 95 4.5V TO 20V 10μF ×4 130k VIN1 VIN2 CPWR INTVCC 90 VRNG RUN1 MODE_PLLIN RUN2 DRVCC 85 4.7µF VOUT1 VOUT2 0.9V V V 1.2V OUT1 OUT2 80 AT 10A VOUTS1 VOUTS2 AT 10A LTM4646 EFFICIENCY (%) VFB1 VFB2 100µF 100μF ×4 121k 60.4k 30.1k 75 ×4 12VIN TO 1.2V EFF, 500kHz V – – OUTS1 VOUTS2 12VIN TO 0.9V EFF, 400kHz COMP1A COMP2A 70 COMP1B COMP2B 1 2 3 4 5 6 7 8 9 10 PINS NOT USED IN THIS CIRCUIT: TRACK/SS1 TRACK/SS2 OUTPUT CURRENT (A) FREQ SGND GND PGOOD1, PGOOD2, EXTV 4646 TA01b 0.1µF 0.1µF CC, TEMP1+, TEMP1–, TEMP2+, TEMP2– 4646 TA01a 115k PHASMD, CLKOUT, SW1, SW2 Rev. A Document Feedback For more information www.analog.com 1 Document Outline Operation Applications Information Package Description Package Photo Related Parts Features Applications Typical Application Description Absolute Maximum Ratings Order Information Pin Configuration Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Decoupling Requirements Operation Applications Information Package Description Revision History Package Photo Design Resources Related Parts
FEATURES DESCRIPTION
n
Dual 10A or Single 20A Output
The LTM®4646 is a complete dual 10A output switching n
Wide Input Voltage Range: 4.5V to 20V
mode DC/DC power supply. Included in the package are n
2.375VMIN with CPWR Bias
the switching controller, power FETs, inductors, and all n
Output Voltage Range: 0.6V to 5.5V
supporting components. Operating from an input voltage n
±1.5% Maximum Total DC Output Error
range of 4.5V to 20V, the LTM4646 supports two outputs n
Multiphase Current Sharing
each with an output voltage range of 0.6V to 5.5V, set by n Differential Remote Sense Amplifier, Each Channel external resistors. Its high efficiency design delivers up to n Current Mode Control/Fast Transient Response 10A continuous current for each output. Only a few input n Up to 96% Efficiency and output capacitors are needed. n Adjustable Switching Frequency (250kHz to 1.3MHz) The device supports frequency synchronization, multiphase n Frequency Synchronization operation, high efficiency light load operation and output n Overcurrent Foldback Protection voltage tracking for supply rail sequencing and has an n Output Overvoltage Protection onboard temperature diode per channel for device tempera- n Internal or External Compensation ture monitoring. High switching frequency and a current n Built-In Temperature Monitoring Diode mode architecture enable a very fast transient response to n SnPb or RoHS Compliant Finish line and load changes without sacrificing stability. n 11.25mm × 15mm × 5.01mm BGA Package Fault protection features include overvoltage and overcur-
APPLICATIONS
rent protection. The power module is offered in a small n Point-of-Load Power Supplies footprint 11.25mm × 15mm × 5.01mm BGA package. n Telecom and Networking Equipment The LTM4646 is available with SnPb or RoHS compliant n Industrial Equipment terminal finish. n All registered trademarks and trademarks are the property of their respective owners. Protected Medical Equipment by U.S. patents, including 5481178, 5847554, 6580258, 6304066, 6476589, 6774611.
TYPICAL APPLICATION Efficiency, 12V to 0.9V, 1.2V at 10A Each
VIN 95 4.5V TO 20V 10μF ×4 130k VIN1 VIN2 CPWR INTVCC 90 VRNG RUN1 MODE_PLLIN RUN2 DRVCC 85 4.7µF VOUT1 VOUT2 0.9V V V 1.2V OUT1 OUT2 80 AT 10A VOUTS1 VOUTS2 AT 10A LTM4646 EFFICIENCY (%) VFB1 VFB2 100µF 100μF ×4 121k 60.4k 30.1k 75 ×4 12VIN TO 1.2V EFF, 500kHz V – – OUTS1 VOUTS2 12VIN TO 0.9V EFF, 400kHz COMP1A COMP2A 70 COMP1B COMP2B 1 2 3 4 5 6 7 8 9 10 PINS NOT USED IN THIS CIRCUIT: TRACK/SS1 TRACK/SS2 OUTPUT CURRENT (A) FREQ SGND GND PGOOD1, PGOOD2, EXTV 4646 TA01b 0.1µF 0.1µF CC, TEMP1+, TEMP1–, TEMP2+, TEMP2– 4646 TA01a 115k PHASMD, CLKOUT, SW1, SW2 Rev. A Document Feedback For more information www.analog.com 1 Document Outline Operation Applications Information Package Description Package Photo Related Parts Features Applications Typical Application Description Absolute Maximum Ratings Order Information Pin Configuration Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Decoupling Requirements Operation Applications Information Package Description Revision History Package Photo Design Resources Related Parts