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Analog Devices LTC7801EUFD | Demoboard DC2641A

High Input Voltage Synchronous Buck Converter

Overview

TopologyBuck Converter
Input voltage48 V
Switching frequency75-850 kHz
Output 112 V / 10 A
IC revision00

Description

Demonstration circuit 2641A is a single output synchronousbuck converter featuring the LTC7801EUFD in the24-lead QFN package. The input voltage range is from16V to 100V and the output is 12V/10A. The DC2641A isconfigured with a sense resistor for over current protection.Inductor DCR current sensing is optional.

Features

  • Wide VIN Range: 4V to 140V (150V Abs Max)
  • Wide Output Voltage Range: 0.8V to 60V
  • Adjustable Gate Drive Level: 5V to 10V (OPTI-DRIVE)
  • Low Operating IQ: 40μA (Shutdown = 10μA)
  • 100% Duty Cycle Operation
  • No External Bootstrap Diode Required
  • Selectable Gate Drive UVLO Thresholds
  • Onboard LDO or External NMOS LDO for DRVCC
  • EXTVCC LDO Powers Drivers from VOUT
  • Phase-Lockable Frequency (75kHz to 850kHz)
  • Programmable Fixed Frequency (50kHz to 900kHz)
  • Selectable Continuous, Pulse-Skipping or Low RippleBurst Mode® Operation at Light Loads
  • Adjustable Burst Clamp
  • Power Good Output Voltage Monitor
  • Programmable Input Overvoltage Lockout
  • Small 24-Lead 4mm × 5mm QFN or TSSOP Packages

Typical applications

  • High Voltage Battery Operated Systems
  • Automotive and Industrial Power Systems
  • Telecommunications Power Systems

More information

Products

Order Code Data­sheet Simu­lation Downloads Status Product seriesL
(mm)
f
(mm)
L
(µH)
IRP,40K
(A)
ISAT,10%
(A)
ISAT,30%
(A)
RDC max.
(mΩ)
fres
(MHz)
Pins (Value)
(pcs)
RowsH
(mm)
GenderTypeIR
(A)
Packaging Samples
62000211121SPEC
6 files Active i| Production is active. Expected lifetime: >10 years.WR-PHD 2.00 mm THT Pin Header 4 2 Single Pin Header Straight 2 Bag
62000311121SPEC
6 files Active i| Production is active. Expected lifetime: >10 years.WR-PHD 2.00 mm THT Pin Header 6 3 Single Pin Header Straight 2 Bag
62000821121SPEC
6 files Active i| Production is active. Expected lifetime: >10 years.WR-PHD 2.00 mm THT Dual Pin Header 8 8 Dual Pin Header Straight 2 Bag
702935000SPEC
3 files Active i| Production is active. Expected lifetime: >10 years.WA-SNSR Self-Retaining Spacer 12.7 4.8
7443633300SPEC
8 files Active i| Production is active. Expected lifetime: >10 years.WE-HCF SMT High Current Inductor 20.8 33 13.3 9.5 11 12.54 12 2 13.5 13.3
60800213421SPEC
3 files Active i| Production is active. Expected lifetime: >10 years.WR-PHD 2.00 mm Jumper with Test Point 2 Jumper 3 Bag
Samples
Order Code Data­sheet Simu­lation Downloads Status Product seriesL
(mm)
f
(mm)
L
(µH)
IRP,40K
(A)
ISAT,10%
(A)
ISAT,30%
(A)
RDC max.
(mΩ)
fres
(MHz)
Pins (Value)
(pcs)
RowsH
(mm)
GenderTypeIR
(A)
Packaging Samples