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Overview
| Topology | Buck Converter |
| Input voltage | 36-48 V |
| Output 1 | 47.5 V / 4 A |
| IC revision | A |
Description
The LM51770EVM-HV evaluation module (EVM) demonstrates a flexible high-power buck-boost design using the LM51770. The EVM is configured to operate from an input voltage range of 36V to 48V and produce a regulated 48V output with up to 4A load current. The EVM operates with a switching frequency of 380kHz. Most settings of the device are adjusted or set through jumpers, such as operation mode (PSM or fPWM), bias supply and external clock synchronization.
Features
Wide input voltage rangeUltra high (> 95%) peak power conversion efficiencyAdjustable output voltage using feedback resistor dividerOptional synchronization (SYNC)Easy configuration of current monitor or limiterProgrammable input undervoltage lockout (UVLO) threshold and hysteresisOutput constant voltage (CV) and constant current (CC) optionsSetting of configuration resistor RCFG through DIP switches
Typical applications
More information
Products
| Order Code | Datasheet | Simulation | Downloads | Status | Product series | L (µH) | IRP,40K (A) | ISAT,10% (A) | ISAT,30% (A) | RDC max. (mΩ) | fres (MHz) | Wire Type | Pins (pcs) | Pitch (mm) | Rows | H (mm) | Gender | Type | IR (A) | Packaging | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | 7443642200 | SPEC | 9 files | Active i| Production is active. Expected lifetime: >10 years. | WE-HCF SMT High Current Inductor | 22 | 34.95 | 15.5 | 18 | 2.64 | 9 | Flat | – | – | – | 18.5 | – | – | 35 | – | ||
 | 61300211121 | SPEC | – | 7 files | Active i| Production is active. Expected lifetime: >10 years. | WR-PHD Pin Header - Single | – | – | – | – | – | – | – | 2 | 2.54 | Single | – | Pin Header | Straight | 3 | Bag | |
 | 61300311121 | SPEC | – | 7 files | Active i| Production is active. Expected lifetime: >10 years. | WR-PHD Pin Header - Single | – | – | – | – | – | – | – | 3 | 2.54 | Single | – | Pin Header | Straight | 3 | Bag | |
 | 61300511121 | SPEC | – | 7 files | Active i| Production is active. Expected lifetime: >10 years. | WR-PHD Pin Header - Single | – | – | – | – | – | – | – | 5 | 2.54 | Single | – | Pin Header | Straight | 3 | Bag | |
 | 61300611121 | SPEC PCN pendingDue to a pending PCN there will be a new datasheet revision issued for this order code soon. Please find the actual as well based on valid PCN date the new revision datasheet below. If you have further questions please get in contact with our sales staff. | – | 7 files | Active i| Production is active. Expected lifetime: >10 years. | WR-PHD Pin Header - Single | – | – | – | – | – | – | – | 6 | 2.54 | Single | – | Pin Header | Straight | 3 | Bag |
| Order Code | Datasheet | Simulation | |
|---|---|---|---|
| 7443642200 | SPEC | |
| 61300211121 | SPEC | – |
| 61300311121 | SPEC | – |
| 61300511121 | SPEC | – |
| 61300611121 | SPEC PCN pendingDue to a pending PCN there will be a new datasheet revision issued for this order code soon. Please find the actual as well based on valid PCN date the new revision datasheet below. If you have further questions please get in contact with our sales staff. | – |
| Samples |
|---|
| Order Code | Datasheet | Simulation | Downloads | Status | Product series | L (µH) | IRP,40K (A) | ISAT,10% (A) | ISAT,30% (A) | RDC max. (mΩ) | fres (MHz) | Wire Type | Pins (pcs) | Pitch (mm) | Rows | H (mm) | Gender | Type | IR (A) | Packaging | Samples |
|---|
