MAX5038, MAX5041 Dual-Phase, Parallelable, Average Current-Mode Controllers

Description

The MAX5038/MAX5041 dual-phase, PWM controllers provide high-output-current capability in a compact package with a minimum number of external components. The MAX5038/MAX5041 utilize a dual-phase, average current-mode control that enables optimal use of low R_DS(ON) MOSFETs, eliminating the need for external heatsinks even when delivering high output currents.

Differential sensing enables accurate control of the output voltage, while adaptive voltage positioning provides optimum transient response. An internal regulator enables operation with input voltage ranges of +4.75V to +5.5V or +8V to +28V. The high switching frequency, up to 500kHz per phase, and dual-phase operation allow the use of low-output inductor values and input capacitor values. This accommodates the use of PC board-embedded planar magnetics achieving superior reliability, current sharing, thermal management, compact size, and low system cost.

The MAX5038/MAX5041 also feature a clock input (CLKIN) for synchronization to an external clock, and a clock output (CLKOUT) with programmable phase delay (relative to CLKIN) for paralleling multiple phases. The MAX5038 offers a variety of factory-trimmed preset output voltages (see Selector Guide) and the MAX5041 offers an adjustable output voltage from +1.0V to +3.3V.

The MAX5038/MAX5041 operate over the extended industrial temperature range (-40°C to +85°C) and are available in a 28-pin SSOP package. Refer to the MAX5037 data sheet for a VRM 9.0-compatible, VID-controlled output voltage controller in a 44-pin MQFP or QFN package.

Key Features

Applications/Uses

+4.75V to +5.5V or +8V to +28V Input Voltage Range
Up to 60A Output Current
Internal Voltage Regulator for a +12V or +24V Power Bus
True Differential Remote Output Sensing
Two Out-Of-Phase Controllers Reduce Input Capacitance Requirement and Distribute Power Dissipation
Average Current-Mode Control
- Superior Current Sharing Between Individual Phases and Paralleled Modules
- Accurate Current Limit Eliminates MOSFET and Inductor Derating
Integrated 4A Gate Drivers
Selectable Fixed Frequency 250kHz or 500kHz Per Phase (Up to 1MHz for 2 Phases)
Fixed (MAX5038) or Adjustable (MAX5041) Output Voltages
0.5% Accurate Reference (MAX5041B)
External Frequency Synchronization from 125kHz to 600kHz
Internal PLL with Clock Output for Paralleling Multiple DC-DC Converters
Thermal Protection
28-Pin SSOP Package

	High-End Desktop Computers
	Large-Memory Arrays
	Networking Systems
	Point-of-Load High-Current/High-Density Telecom DC-DC Regulators
	RAID Systems
	Servers and Workstations

Key Specifications: Step-Down Switching Regulators

Part Number

V_IN (min) (V)

V_IN (max) (V)

Min. V_OUT (V)

Max. V_OUT (V)

Preset V_OUT (V)

I_OUT (A)

Output Adj. Method

Operating Current, I_CC (max) (mA)

Number of DC-DC Outputs

Operating Freq. (kHz)

Features

EV-Kit

Package

RoHS Available

Operating Temp. Range (°C)

Price^**

MAX5038

4.75

1.2

3.3

1.2
1.5
1.8
2.5
3.3

Preset

250
500

•	Adjustable Frequency

•	Average Current Mode Control

•	Current Limit

•	Dual/Multi-Phase Controller

•	Fixed Frequency/ PWM Operation

•	Soft Start

•	Synchronous Rectifier

Yes

SSOP/28

Yes

-40 to +85

MAX5041

Resistor

$2.61 @ 1k

See All Step-Down Switching Regulators (223)

Key Specifications: Switch-Mode DC-DC Power Supplies

Part Number

Topology

V_IN (min) (V)

V_IN (max) (V)

Number of DC-DC Outputs

Preset V_OUT (V)

Digital/VID Programmed Output

Min. Adjustable V_OUT (V)

Max. Adjustable V_OUT (V)

I_OUT (A)

Operating Current, I_CC (max) (mA)

Operating Freq. (kHz)

Internal Power Switch(es)

Package

Price^**

MAX5038

Step-Down

4.75

1.2
1.5
1.8
2.5
3.3

250
500

SSOP/28

MAX5041

3.3

$2.61 @ 1k

See All Switch-Mode DC-DC Power Supplies (429)

Notes:
^**This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

Ordering Information

Notes:

Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales.
Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day.
Part number suffixes: T or T&R = tape and reel; + = RoHS/lead-free; # = RoHS/lead-exempt. More: SeeFull Data Sheet or Part Naming Conventions.
* Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.

Devices: 1-19 of 19

MAX5038

Free
Sample

Buy

Package:	TYPE PINS FOOTPRINT
	DRAWING CODE/VAR *

Temp

RoHS/Lead-Free?
Materials Analysis

MAX5038EAI33+T

SSOP;28 pin;
Dwg: 21-0056C (PDF)
Use pkgcode/variation: A28+1*

-40°C to +85°C

RoHS/Lead-Free: Lead Free
Materials Analysis

MAX5038EAI33+

SSOP;28 pin;
Dwg: 21-0056C (PDF)
Use pkgcode/variation: A28+1*

-40°C to +85°C

RoHS/Lead-Free: Lead Free
Materials Analysis

MAX5038EAI33-T

-40°C to +85°C

See data sheet

MAX5038EAI33

SSOP;28 pin;
Dwg: 21-0056C (PDF)
Use pkgcode/variation: A28-1*

-40°C to +85°C

RoHS/Lead-Free: No
Materials Analysis

MAX5038EAI25-T

-40°C to +85°C

See data sheet

MAX5038EAI25

SSOP;28 pin;
Dwg: 21-0056C (PDF)
Use pkgcode/variation: A28-1*

-40°C to +85°C

RoHS/Lead-Free: No
Materials Analysis

MAX5038EAI18-T

-40°C to +85°C

See data sheet

MAX5038EAI12-T

-40°C to +85°C

See data sheet

MAX5038EAI12

SSOP;28 pin;
Dwg: 21-0056C (PDF)
Use pkgcode/variation: A28-1*

-40°C to +85°C

RoHS/Lead-Free: No
Materials Analysis

MAX5038EAI15

SSOP;28 pin;
Dwg: 21-0056C (PDF)
Use pkgcode/variation: A28-1*

-40°C to +85°C

RoHS/Lead-Free: No
Materials Analysis

MAX5038EAI15-T

-40°C to +85°C

See data sheet

MAX5038EAI18

SSOP;28 pin;
Dwg: 21-0056C (PDF)
Use pkgcode/variation: A28-1*

-40°C to +85°C

RoHS/Lead-Free: No
Materials Analysis

MAX5041

Free
Sample

Buy

Package:	TYPE PINS FOOTPRINT
	DRAWING CODE/VAR *

Temp

RoHS/Lead-Free?
Materials Analysis

MAX5041EVKIT

See data sheet

MAX5041EAI

SSOP;28 pin;
Dwg: 21-0056C (PDF)
Use pkgcode/variation: A28-1*

-40°C to +85°C

RoHS/Lead-Free: No
Materials Analysis

MAX5041EAI-T

SSOP;28 pin;
Dwg: 21-0056C (PDF)
Use pkgcode/variation: A28-1*

-40°C to +85°C

RoHS/Lead-Free: No
Materials Analysis

MAX5041BEAI

SSOP;28 pin;
Dwg: 21-0056C (PDF)
Use pkgcode/variation: A28-1*

-40°C to +85°C

RoHS/Lead-Free: No
Materials Analysis

MAX5041BEAI-T

SSOP;28 pin;
Dwg: 21-0056C (PDF)
Use pkgcode/variation: A28-1*

-40°C to +85°C

RoHS/Lead-Free: No
Materials Analysis

MAX5041EAI+

SSOP;28 pin;
Dwg: 21-0056C (PDF)
Use pkgcode/variation: A28+1*

-40°C to +85°C

RoHS/Lead-Free: Lead Free
Materials Analysis

MAX5041EAI+T

SSOP;28 pin;
Dwg: 21-0056C (PDF)
Use pkgcode/variation: A28+1*

-40°C to +85°C

RoHS/Lead-Free: Lead Free
Materials Analysis

Related Products

MAX5037 VRM 9.0, Dual-Phase, Parallelable, Average Current-Mode Controller
MAX5038, MAX5041 Dual-Phase, Parallelable, Average Current-Mode Controllers