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Analog Devices LTC7810 | Demoboard DC2529A
150V Low IQ, Dual, 2-Phase Synchronous Step-Down DC/DC Controller
Overview
| Topology | Buck Converter |
| Input voltage | 16-130 V |
| Switching frequency | 75-750 kHz |
| Output 1 | 12 V / 5 A |
| Output 2 | 5 V / 10 A |
Description
Demonstration circuit 2529A is a dual output synchronous buck converter featuring the LTC®7810ELXE in a 48-lead eLQFP package. Key features of this board include: an optional on-board NMOS LDO for DRVCC; jumper for spread-spectrum option; optional resistors for single output dual phase operation; a mode selector that allows the converter to run in CCM, pulse-skipping, adjustable burst clamp or default Burst Mode® operation; SYNC turret for Poly- Phase® operation. The input voltage range of this demo board is from 16V to 130V and it uses a sense resistor for overcurrent protection.The LTC7810 data sheet gives a complete description of the part, operation and application information and must be read in conjunction with this demo manual for DC2529A.
Features
- Wide VIN Range: 4.5V to 140V (150V Abs Max)
- Wide Output Voltage Range: 1V VOUT 60V
- Low Operating IQ: 16 A (48VIN to 12VOUT and 3.3VOUT)
- Adjustable Gate Drive Level Up to 10V
- Optional Spread Spectrum Operation
- Very Low Dropout: 100% Duty Cycle Operation
- Low IQ in Dropout: 78μA (One Channel On)
- RSENSE or Inductor DCR Current Sensing
- Out-of-Phase Controllers Reduce Required Input Capacitance and Power Supply Induced Noise
- Phase-Lockable Frequency (75kHz to 720kHz)
- Programmable Fixed Frequency (50kHz to 750kHz)
- Selectable Continuous, Pulse-Skipping, or Low Ripple Burst Mode® Operation at Light Loads
- Onboard LDO or External NMOS LDO for DRVCC
- EXTVCC LDO Powers Drivers from VOUT
- Programmable Input Overvoltage Lockout
- 48-Lead (7mm × 7mm) eLQFP Package
Typical applications
- Automotive and Transportation
- Industrial and Telecommunications
More information
Products
| Order Code | Datasheet | Simulation | Downloads | Product series | L (mm) | f (mm) | L (µH) | IRP,40K (A) | ISAT,10% (A) | ISAT,30% (A) | RDC max. (mΩ) | fres (MHz) | Pins | Rows | H (mm) | Gender | Type | IR (A) | Packaging | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | 62000211121 | SPEC | – | 6 files | WR-PHD 2.00 mm THT Pin Header | 4 | – | – | – | – | – | – | – | 2 | Single | – | Pin Header | Straight | 2 | Bag | |
| 62000311121 | SPEC | – | 6 files | WR-PHD 2.00 mm THT Pin Header | 6 | – | – | – | – | – | – | – | 3 | Single | – | Pin Header | Straight | 2 | Bag | |
| 62000411121 | SPEC | – | 6 files | WR-PHD 2.00 mm THT Pin Header | 8 | – | – | – | – | – | – | – | 4 | Single | – | Pin Header | Straight | 2 | Bag | |
 | 62000821121 | SPEC | – | 6 files | WR-PHD 2.00 mm THT Dual Pin Header | 8 | – | – | – | – | – | – | – | 8 | Dual | – | Pin Header | Straight | 2 | Bag | |
 | 702935000 | SPEC | – | 3 files | WA-SNSR Self-Retaining Spacer | 12.7 | 4.8 | – | – | – | – | – | – | – | – | – | – | – | – | – | |
 | 7443631500 | SPEC | 8 files | WE-HCF SMT High Current Inductor | 20.8 | – | 15 | 15.4 | 19 | 21 | 9.57 | 12.8 | 2 | – | 13.5 | – | – | – | – | ||
| 7443634700 | SPEC | 8 files | WE-HCF SMT High Current Inductor | 20.8 | – | 47 | 12.8 | 7.5 | 8.5 | 13.42 | 10 | 2 | – | 13.5 | – | – | – | – | ||
 | 60800213421 | SPEC | – | 3 files | WR-PHD 2.00 mm Jumper with Test Point | – | – | – | – | – | – | – | – | 2 | – | – | Jumper | – | 3 | Bag |
| Order Code | Datasheet | Simulation | |
|---|---|---|---|
| 62000211121 | SPEC | – |
| 62000311121 | SPEC | – |
| 62000411121 | SPEC | – |
| 62000821121 | SPEC | – |
| 702935000 | SPEC | – |
| 7443631500 | SPEC | |
| 7443634700 | SPEC | |
| 60800213421 | SPEC | – |
| Samples |
|---|
| Order Code | Datasheet | Simulation | Downloads | Product series | L (mm) | f (mm) | L (µH) | IRP,40K (A) | ISAT,10% (A) | ISAT,30% (A) | RDC max. (mΩ) | fres (MHz) | Pins | Rows | H (mm) | Gender | Type | IR (A) | Packaging | Samples |
|---|