ADP1850

RECOMMENDED FOR NEW DESIGNS

Wide Range Input, Dual/Two-Phase, DC-to-DC Synchronous Buck Controller

Part Models
1
1ku List Price
Starting From $1.81

Part Details

  • Wide range input: 2.75 V to 20 V
  • Power stage input voltage: 1 V to 20 V
  • Output voltage range: 0.6 V up to 90% VIN
  • Output current to more than 25 A per channel
  • Accurate current sharing between channels (interleaved)
  • Programmable frequency: 200 kHz to 1.5 MHz
  • 180° phase shift between channels for reduced input capacitance
  • ±0.85% reference voltage accuracy from −40°C to +85°C
  • Integrated boost diodes
  • Power saving mode (PSM) at light loads
  • Accurate power good with internal pull-up resistor
  • Accurate voltage tracking capability
  • Independent channel precision enable
  • Overvoltage and overcurrent limit protection
  • Externally programmable soft start, slope compensation and current sense gain
  • Synchronization input
  • Thermal overload protection
  • Input undervoltage lockout (UVLO)
  • Available in 32-lead 5 mm × 5 mm LFCSP
ADP1850
Wide Range Input, Dual/Two-Phase, DC-to-DC Synchronous Buck Controller
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Documentation

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Tools & Simulations

LTspice 1


Models for the following parts are available in LTspice:

  • ADP1850

ADP1850-77 Buck Designer Tool

Microsoft Excel download tool from ADIsimPower to generate a power supply design complete with a schematic, bill of materials, and performance specifications.

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LTspice

LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.


Evaluation Kits

EVAL-ADP1850

ADP1850 Evaluation Board

Product Details

This describes the design, operation, and test results of the ADP1850DP-EVALZ operating in dual-phase mode and the ADP1850SP-EVALZ operating in single-phase mode.


The input range for this evaluation board is 10 V to 15 V, and the regulated output voltage is 1.09 V with a maximum 50 A output current. A switching frequency (fSW) of 300 kHz is chosen to achieve a good balance between efficiency and the sizes of the power components.


The input range for the ADP1850SP-EVALZ evaluation board is 10 V to 20 V, and the two regulated output voltages are set to 3.3 V (VOUT1) and 1.8 V (VOUT2) with a maximum 14 A output current. A switching frequency (fSW) of 600 kHz is chosen to achieve a good balance between efficiency and the sizes of the power components.

EVAL-ADP1850
ADP1850 Evaluation Board

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