MAX15034

PRODUCTION

Configurable, Single-/Dual-Output, Synchronous Buck Controller for High-Current Applications

Dual Converter Configurable for 25A Per Output or a Single 50A Output

Data Sheet (Rev. 1) Product Selection Table

Part Models: 4
1ku List Price: Starting From $7.55

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Overview

4.75V to 5.5V or 5V to 28V Input
Dual-Output Synchronous Buck Controller
Configurable for Two Separate Outputs (25A) or One Single Output (50A)
Average Current-Mode Control with Accurate Adjustable Current Limit
180° Interleaved Operation Reduces Size of Input Filter Capacitors
Limits Reverse Current Sinking When Operated in Parallel Mode
Each Output is Adjustable from 0.61V to 5.5V
Independently Programmable Adaptive Voltage Positioning
Monotonic Startup into Prebiased Outputs
Independent Shutdown for Each Output
100kHz to 1MHz per Phase Programmable Switching Frequency
Oscillator Frequency Synchronization from 200kHz to 2MHz
Digital Soft-Start on Outputs
Hiccup-Mode Overcurrent Protection
Overtemperature Shutdown
Thermally Enhanced 28-Pin TSSOP Package Capable of Dissipating 2.1W

The MAX15034 two-phase, configurable single- or dual-output buck controller has an input voltage range of 4.75V to 5.5V or 5V to 28V. A mode select input allows for a dual-output supply or connecting two phases together for a single-output, high-current supply. Each output channel of the MAX15034 drives n-channel MOSFETs and is capable of providing more than 25A of load current. The MAX15034 uses average current-mode control with a switching frequency up to 1MHz per phase where each phase is 180° out of phase with respect to the other. Out-of-phase operation results in significantly reduced input capacitor ripple current and output voltage ripple in dual-phase, single-output voltage applications. Each controller has its own high-performance current and voltage-error amplifier that can be compensated for optimum output filter L-C values and transient response.

The MAX15034 offers two enable inputs with accurate turn-on thresholds to allow for output voltage sequencing of the two outputs. The device's switching frequency can be programmed from 100kHz to 1MHz with an external resistor. The MAX15034 can be synchronized to an external clock. Each output voltage is adjustable from 0.61V to 5.5V. Additional features include thermal shutdown and hiccup-mode, short-circuit protection. Use the MAX15034 with adaptive voltage positioning for applications that require a fast transient response or accurate output voltage regulation.

The MAX15034 is available in a thermally enhanced 28-pin TSSOP package capable of dissipating 2.1W. The device is rated for operation over the -40°C to +125°C automotive temperature range.

Applications

Graphics Cards
High-End Computers/Workstations/Servers
Networking Systems
Point-of-Load High-Current/High-Density Telecom DC-DC Regulators
RAID Systems

Part Models: 4
1ku List Price: Starting From $7.55

Documentation

Data Sheet 1

MAX15034: Configurable, Single-/Dual-Output, Synchronous Buck Controller for High-Current Applications Data Sheet (Rev.1) 11/09/2011

Reliability Data 1

MAX15034 Reliability Data 01/12/2023

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.

Part Model	Pin/Package Drawing	Documentation	CAD Symbols, Footprints, and 3D Models
MAX15034BAUI+	28-TSSOP_4.4_EP-4.4_MM	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX15034BAUI+T	28-TSSOP_4.4_EP-4.4_MM	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX15034BAUI/V+	28-TSSOP_4.4_EP-4.4_MM	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX15034BAUI/V+T	28-TSSOP_4.4_EP-4.4_MM	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN

Jan 17, 2018 - 1721E ASSEMBLY
		pcn_1721e
MAX15034BAUI/V+T	PRODUCTION	pcn_1721e
Dec 7, 2015 - 1601 ASSEMBLY
		pcn_1601
MAX15034BAUI/V+T	PRODUCTION	pcn_1601

This is the most up-to-date revision of the Data Sheet.

Software Resources

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Hardware Ecosystem

Parts	Product Life Cycle	Description
Switching Regulators & Controllers 3
MAX5066	PRODUCTION	Configurable, Single-/Dual-Output, Synchronous Buck Controller for High-Current Applications
MAX5061	PRODUCTION	0.6V to 5.5V Output, Parallelable, Average-Current-Mode DC-DC Controllers
MAX5060	PRODUCTION	0.6V to 5.5V Output, Parallelable, Average-Current-Mode DC-DC Controllers

Evaluation Kits

Evaluation Kit for the MAX15034B and MAX5066

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Features and Benefits

5V to 16V Input-Voltage Range (Design Optimized for 12V Input)
Output Voltages
- 1.2V at 20A (Adjustable from 0.61V to 5.5V)
- 1.2V at 20A (Adjustable from 0.61V to 5.5V)
300kHz Switching Frequency
Both Outputs Can be Paralleled for Higher Current Capability (Using Mode Function)
Average Current-Mode Control Provides Accurate Current Limit
Current-Sharing Accuracy within ±5% Between Parallel Channels
180° Interleaved Operation Reduces Size of Input Filter Capacitors
Overtemperature Shutdown
Excellent Line- and Load-Transient Response
Hiccup-Mode Overcurrent Protection
Can be Synchronized to an External Clock
Provision for Output DC Accuracy
Low-Profile Components
Fully Assembled and Tested

Product Details

The MAX15034B evaluation kit (EV kit) is a two-phase, dual-output buck converter with a 5V to 16V input voltage range. The MAX15034B EV kit provides dual 1.2V output voltages (V_OUT1 and V_OUT2). It delivers up to 20A output current for each output with 86.7% efficiency. The MAX15034B EV kit uses average current-mode control and operates at 300kHz switching frequency per phase where each phase is 180° out-of-phase with respect to the other.

The MAX15034B EV kit is a fully assembled and tested circuit board. Both outputs are adjustable between 0.61V and 5.5V by changing feedback resistors R4–R7. Additional features include thermal-shutdown and "hiccup-mode" short-circuit protection.