Datasheet LTM4612 (Analog Devices)
| 制造商 | Analog Devices |
| 描述 | EN55022B Compliant 36VIN, 15VOUT, 5A, DC/DC μModule Regulator |
| 页数 / 页 | 28 / 1 — FEATURES. DESCRIPTION. Complete Low EMI Switch Mode Power Supply. EN55022 … |
| 文件格式/大小 | PDF / 1.1 Mb |
| 文件语言 | 英语 |
FEATURES. DESCRIPTION. Complete Low EMI Switch Mode Power Supply. EN55022 Class B Compliant
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LTM4612 EN55022B Compliant 36VIN, 15VOUT, 5A, DC/DC µModule Regulator
FEATURES DESCRIPTION
n
Complete Low EMI Switch Mode Power Supply
The LTM®4612 is a EN55022 Class B certified high voltage n
EN55022 Class B Compliant
input and output, 5A switching mode DC/DC power supply. n
Wide Input Voltage Range: 5V to 36V
Included in the package are the switching controller, power n
3.3V to 15V Output Voltage Range
FETs, inductor and all support components. Operating n
5A DC, 7A Peak Output Current
over an input voltage range of 5V to 36V, the LTM4612 n
Low Input and Output Referred Noise
supports an output voltage range of 3.3V to 15V, set by a n
Output Voltage Tracking and Margining
single resistor. Only bulk input and output capacitors are n
Power Good Tracks with Margining
needed to finish the design. n
PLL Frequency Synchronization
High switching frequency and an adaptive on-time current n ±
1.5% Set Point Accuracy
mode architecture enables a very fast transient response n
Current Foldback Protection (Disabled at Start-Up)
to line and load changes without sacrificing stability. n
Parallel/Current Sharing
n Ultrafast Transient Response The onboard input filter and noise cancellation circuits n Current Mode Control achieve low noise coupling, thus effectively reducing the n Programmable Soft-Start electromagnetic interference (EMI)—see Figures 4 and 8. n Output Overvoltage Protection Furthermore, the DC/DC µModule® regulator can be syn- n –55°C to 125°C Operating Temperature Range chronized with an external clock to reduce undesirable (LTM4612MPV) frequency harmonics and allow PolyPhase® operation for n Small Surface Mount Footprint, Low Profile high load currents. (15mm × 15mm × 2.8mm) LGA Package The LTM4612 is offered in a space saving and thermally enhanced 15mm
APPLICATIONS
× 15mm × 2.8mm LGA package, which enables utilization of unused space on the bottom of PC n boards for high density point-of-load regulation. The Telecom and Networking Equipment n LTM4612 is Pb-free and RoHS compliant. Industrial and Avionic Equipment L n , LT, LTC, LTM, Linear Technology, the Linear logo, PolyPhase and µModule are registered RF Systems trademarks and LTpowerCAD is a trademark of Linear Technology Corporation. All other trademarks are the property of their respective owners.
TYPICAL APPLICATION Radiated Emission Scan at 24VIN, 5VOUT/5A 5V/5A Ultralow Noise µModule with 7V to 36V Input
70 60 VIN CLOCK SYNC 7V 50 TO 36V 2M 100k VIN PLLIN VOUT 40 EN55022 CLASS B LIMIT PGOOD VOUT 5V RUN LTM4612 100pF 5A C 30 COMP V OUT FB dBµV/m INTVCC 13.7k 20 CIN DRVCC FCB 10 fSET MARG0 MARGIN TRACK/SS MARG1 CONTROL 0 0.01µF VD MPGM 10µF SGND PGND 392k –10 5% MARGIN 30 226.2 422.4 618.6 814.8 1010 128.1 324.3 520.5 716.7 912.9 4612 TA01 FREQUENCY (MHz) 4612 TA01b 4612fc For more information www.linear.com/LTM4612 1 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Decoupling Requirements Operation Applications Information Package Description Revision History Package Photograph Related Parts
FEATURES DESCRIPTION
n
Complete Low EMI Switch Mode Power Supply
The LTM®4612 is a EN55022 Class B certified high voltage n
EN55022 Class B Compliant
input and output, 5A switching mode DC/DC power supply. n
Wide Input Voltage Range: 5V to 36V
Included in the package are the switching controller, power n
3.3V to 15V Output Voltage Range
FETs, inductor and all support components. Operating n
5A DC, 7A Peak Output Current
over an input voltage range of 5V to 36V, the LTM4612 n
Low Input and Output Referred Noise
supports an output voltage range of 3.3V to 15V, set by a n
Output Voltage Tracking and Margining
single resistor. Only bulk input and output capacitors are n
Power Good Tracks with Margining
needed to finish the design. n
PLL Frequency Synchronization
High switching frequency and an adaptive on-time current n ±
1.5% Set Point Accuracy
mode architecture enables a very fast transient response n
Current Foldback Protection (Disabled at Start-Up)
to line and load changes without sacrificing stability. n
Parallel/Current Sharing
n Ultrafast Transient Response The onboard input filter and noise cancellation circuits n Current Mode Control achieve low noise coupling, thus effectively reducing the n Programmable Soft-Start electromagnetic interference (EMI)—see Figures 4 and 8. n Output Overvoltage Protection Furthermore, the DC/DC µModule® regulator can be syn- n –55°C to 125°C Operating Temperature Range chronized with an external clock to reduce undesirable (LTM4612MPV) frequency harmonics and allow PolyPhase® operation for n Small Surface Mount Footprint, Low Profile high load currents. (15mm × 15mm × 2.8mm) LGA Package The LTM4612 is offered in a space saving and thermally enhanced 15mm
APPLICATIONS
× 15mm × 2.8mm LGA package, which enables utilization of unused space on the bottom of PC n boards for high density point-of-load regulation. The Telecom and Networking Equipment n LTM4612 is Pb-free and RoHS compliant. Industrial and Avionic Equipment L n , LT, LTC, LTM, Linear Technology, the Linear logo, PolyPhase and µModule are registered RF Systems trademarks and LTpowerCAD is a trademark of Linear Technology Corporation. All other trademarks are the property of their respective owners.
TYPICAL APPLICATION Radiated Emission Scan at 24VIN, 5VOUT/5A 5V/5A Ultralow Noise µModule with 7V to 36V Input
70 60 VIN CLOCK SYNC 7V 50 TO 36V 2M 100k VIN PLLIN VOUT 40 EN55022 CLASS B LIMIT PGOOD VOUT 5V RUN LTM4612 100pF 5A C 30 COMP V OUT FB dBµV/m INTVCC 13.7k 20 CIN DRVCC FCB 10 fSET MARG0 MARGIN TRACK/SS MARG1 CONTROL 0 0.01µF VD MPGM 10µF SGND PGND 392k –10 5% MARGIN 30 226.2 422.4 618.6 814.8 1010 128.1 324.3 520.5 716.7 912.9 4612 TA01 FREQUENCY (MHz) 4612 TA01b 4612fc For more information www.linear.com/LTM4612 1 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Decoupling Requirements Operation Applications Information Package Description Revision History Package Photograph Related Parts