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ADP1850

Analog Devices
Part Number ADP1850
Manufacturer Analog Devices
Description DC-to-DC Synchronous Buck Controller
Published Mar 6, 2017
Detailed Description Data Sheet Wide Range Input, Dual/Two-Phase, DC-to-DC Synchronous Buck Controller ADP1850 FEATURES Wide range input: 2...
Datasheet PDF File ADP1850 PDF File

ADP1850
ADP1850

Overview
Data Sheet Wide Range Input, Dual/Two-Phase, DC-to-DC Synchronous Buck Controller ADP1850 FEATURES 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 APPLICATIONS High current single and dual output intermediate bus and point of load converters requiring sequencing and tracking capability, including converters for: Point-of-load power supplies Telecom base station and networking Consumer Industrial and instrumentation Healthcare and medical GENERAL DESCRIPTION The ADP1850 is a configurable dual output or two-phase, single output dc-to-dc synchronous buck controller capable of running from commonly used 3.
3 V to 12 V (up to 20 V) voltage inputs.
The device operates in current mode for improved transient response and uses valley current sensing for enhanced noise immunity.
The architecture enables accurate current sharing between interleaved phases for high current outputs.
The ADP1850 is ideal in system applications requiring multiple output voltages: the ADP1850 includes a synchronization feature to eliminate beat frequencies between switching devices; provides accurate tracking capability between supplies and includes precision enable for simple, robust sequencing.
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