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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
- Industrial and Telecommunications
- Automotive and Transportation
More information
Products
Order Code | Datasheet | Simulation | Downloads | Status | Product series | f(mm) | L(µH) | IRP,40K(A) | ISAT,10%(A) | ISAT,30%(A) | RDC max.(mΩ) | fres(MHz) | Wire Type | Pins | Type | Mount | L(mm) | H(mm) | IR(A) | Working Voltage(V (AC)) | Operating Temperature | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | WE-HCF SMT High Current Inductor, –, 15 µH | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-HCF SMT High Current Inductor | – | Inductance15 µH | Performance Rated Current15.4 A | Saturation Current @ 10%19 A | Saturation Current @ 30%21 A | DC Resistance9.57 mΩ | Self Resonant Frequency12.8 MHz | Wire TypeFlat | Pins2 | – | MountSMT | Length20.8 mm | Height13.5 mm | Rated Current14 A | – | Operating Temperature -40 °C up to +125 °C | ||||
| WE-HCF SMT High Current Inductor, –, 47 µH | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-HCF SMT High Current Inductor | – | Inductance47 µH | Performance Rated Current12.8 A | Saturation Current @ 10%7.5 A | Saturation Current @ 30%8.5 A | DC Resistance13.42 mΩ | Self Resonant Frequency10 MHz | Wire TypeFlat | Pins2 | – | MountSMT | Length20.8 mm | Height13.5 mm | Rated Current12 A | – | Operating Temperature -40 °C up to +125 °C | ||||
 | WA-SNSR Self-Retaining Spacer, 4.8 mm, – | Simulation– | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWA-SNSR Self-Retaining Spacer | Drilling in Panel4.8 mm | – | – | – | – | – | – | – | – | – | – | Length12.7 mm | – | – | – | Operating Temperature -30 °C up to +85 °C | |||
 | WR-PHD Jumper, –, – | Simulation– | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWR-PHD Jumper | – | – | – | – | – | – | – | – | Pins2 | – | – | – | – | Rated Current3 A | Working Voltage200 V (AC) | Operating Temperature -25 °C up to +105 °C | |||
 | WR-PHD Pin Header, –, – | Simulation– | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWR-PHD Pin Header | – | – | – | – | – | – | – | – | Pins2 | TypeStraight | MountTHT | Length4 mm | – | Rated Current2 A | Working Voltage200 V (AC) | Operating Temperature -40 °C up to +105 °C | |||
 | WR-PHD Pin Header, –, – | Simulation– | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWR-PHD Pin Header | – | – | – | – | – | – | – | – | Pins3 | TypeStraight | MountTHT | Length6 mm | – | Rated Current2 A | Working Voltage200 V (AC) | Operating Temperature -40 °C up to +105 °C | |||
 | WR-PHD Pin Header, –, – | Simulation– | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWR-PHD Pin Header | – | – | – | – | – | – | – | – | Pins4 | TypeStraight | MountTHT | Length8 mm | – | Rated Current2 A | Working Voltage200 V (AC) | Operating Temperature -40 °C up to +105 °C | |||
 | WR-PHD Pin Header, –, – | Simulation– | Downloads7 files | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWR-PHD Pin Header | – | – | – | – | – | – | – | – | Pins8 | TypeStraight | MountTHT | Length8 mm | – | Rated Current2 A | Working Voltage200 V (AC) | Operating Temperature -40 °C up to +105 °C |