MAX5060ETI+T Maxim Integrated Products, MAX5060ETI+T Datasheet

IC CNTRLR DC-DC 28-TQFN

MAX5060ETI+T

Manufacturer Part Number
MAX5060ETI+T
Description
IC CNTRLR DC-DC 28-TQFN
Manufacturer
Maxim Integrated Products
Datasheet
1.MAX5061AUE.pdf (31 pages)

Specifications of MAX5060ETI+T

Pwm Type
Current Mode
Number Of Outputs
1
Frequency - Max
1.5MHz
Duty Cycle
90%
Voltage - Supply
4.75 V ~ 28 V
Buck
Yes
Boost
No
Flyback
No
Inverting
No
Doubler
No
Divider
No
Cuk
No
Isolated
No
Operating Temperature
-40°C ~ 85°C
Package / Case
28-TQFN Exposed Pad
Frequency-max
1.5MHz
Output Voltage
0.6 V to 5.5 V
Output Current
30 A
Input Voltage
4.75 V to 5.5 V, 7 V to 28 V
Mounting Style
SMD/SMT
Maximum Operating Temperature
+ 85 C
Minimum Operating Temperature
- 40 C
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
The MAX5060/MAX5061 pulse-width modulation (PWM)
DC-DC controllers provide high-output-current capability
in a compact package with a minimum number of exter-
nal components. These devices utilize an average-cur-
rent-mode control that enables optimal use of low
R
heatsinks even when delivering high output currents.
Differential sensing (MAX5060) enables accurate control
of the output voltage, while adaptive voltage positioning
provides optimum transient response. An internal regula-
tor enables operation with 4.75V to 5.5V or 7V to 28V
input voltage ranges. The high switching frequency, up
to 1.5MHz, allows the use of low-output inductor values
and input capacitor values. This accommodates the use
of PC-board-embedded planar magnetics.
The MAX5060 features a clock output with 180° phase
delay to control a second out-of-phase converter for
lower capacitor ripple currents. The MAX5060 also limits
the reverse current if the bus voltage becomes higher
than the regulated output voltage. The MAX5060 is
specifically designed to limit current sinking when multi-
ple power-supply modules are paralleled. The
MAX5060/MAX5061 offer an adjustable 0.6V to 5.5V out-
put voltage. The MAX5060 offers an overvoltage protec-
tion, power-good signal, and an output enable function.
The MAX5060/MAX5061 operate over the automotive
temperature range (-40°C to +125°C). The MAX5060 is
available in a 28-pin thin QFN package while the
MAX5061 is available in a 16-pin TSSOP package.
19-3583; Rev 2; 7/05
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
MAX5060
MAX5061
DS(ON)
PART
Servers and Workstations
Point-of-Load Telecom DC-DC Regulators
Networking Systems
RAID Systems
High-End Desktop Computers
MOSFETs, eliminating the need for external
Average-Current-Mode DC-DC Controllers
Average-Current-Mode DC-DC Controller
for 5V/12V/24V Input Bus with CLKOUT,
Load Monitoring, Overvoltage, EN Input,
SYNC Input, and PGOOD Output
Average-Current-Mode DC-DC Controller
for 5V/12V/24V Input with SYNC/ENABLE
Input
________________________________________________________________ Maxim Integrated Products
General Description
Selector Guide
OUTPUT
0.6V to 5.5V Output, Parallelable,
Applications
♦ 4.75V to 5.5V or 7V to 28V Input Voltage Range
♦ Adjustable Output Voltage from 0.6V to 5.5V
♦ Up to 30A Output Current
♦ Can Parallel Outputs For Higher Output Current
♦ Programmable Adaptive Output Voltage
♦ True-Differential Remote Output Sensing
♦ Average-Current-Mode Control
♦ Limits Reverse Current Sinking in Paralleled
♦ Programmable Switching Frequency from 125kHz
♦ Integrated 4A Gate Drivers
♦ Clock Output for 180° Out-of-Phase Operation
♦ Voltage Signal Proportional to Output Current for
♦ Output Overvoltage Crowbar Protection
♦ Programmable Hiccup Current-Limit Threshold
♦ Overtemperature Thermal Shutdown
*EP = Exposed pad.
Pin Configurations appear at end of data sheet.
MAX5060ATI
MAX5060ETI
MAX5061AUE -40°C to +125°C
MAX5061EUE -40°C to +85°C
Positioning
(MAX5060)
Modules (MAX5060)
to 1.5MHz
(MAX5060)
Load Monitoring (MAX5060)
(MAX5060)
and Response Time
• Superior Current Sharing Between Paralleled
• Accurate Current Limit Eliminates MOSFET
PART
Modules
and Inductor Derating
TEMP RANGE
-40°C to +125°C
-40°C to +85°C
Ordering Information
PIN-PACKAGE
28 TQFN-EP*
28 TQFN-EP*
16 TSSOP-EP*
16 TSSOP-EP*
Features
PKG
CODE
T2855-3
T2855-3
U16E-3
U16E-3
1

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MAX5060ETI+T Summary of contents

Page 1

... Average-Current-Mode DC-DC Controller MAX5061 for 5V/12V/24V Input with SYNC/ENABLE Input ________________________________________________________________ Maxim Integrated Products For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. 0.6V to 5.5V Output, Parallelable, ♦ 4.75V to 5. 28V Input Voltage Range ♦ ...

Page 2

Output, Parallelable, Average-Current-Mode DC-DC Controllers ABSOLUTE MAXIMUM RATINGS IN to SGND.............................................................-0.3V to +30V BST to SGND..........................................................-0.3V to +35V .......................................-0. PGND (MAX5060).............................-0. PGND (MAX5061).............................-0. BST ...

Page 3

Average-Current-Mode DC-DC Controllers ELECTRICAL CHARACTERISTICS (continued 5V (MAX5060 only (Note 1) PARAMETER OSCILLATOR Switching Frequency Range Switching Frequency Switching Frequency Accuracy CLKOUT Phase Shift (MAX5060) CLKOUT Output Low Level (MAX5060) CLKOUT ...

Page 4

Output, Parallelable, Average-Current-Mode DC-DC Controllers ELECTRICAL CHARACTERISTICS (continued 5V (MAX5060 only (Note 1) PARAMETER SYMBOL CURRENT-ERROR AMPLIFIER (Transconductance Amplifier) Transconductance Open-Loop Gain DIFFERENTIAL VOLTAGE AMPLIFIER (DIFF, MAX5060 only) ...

Page 5

Average-Current-Mode DC-DC Controllers ELECTRICAL CHARACTERISTICS (continued 5V (MAX5060 only (Note 1) PARAMETER ENABLE INPUTS EN Input High Voltage (MAX5060) EN Input Hysteresis (MAX5060) EN Pullup Current (MAX5060) RT/SYNC/EN Input High Voltage ...

Page 6

Output, Parallelable, Average-Current-Mode DC-DC Controllers (T = +25°C, Figures 1 and 2, unless otherwise noted.) A EFFICIENCY vs. OUTPUT CURRENT AND INPUT VOLTAGE 100 12V ...

Page 7

Average-Current-Mode DC-DC Controllers (T = +25°C, Figures 1 and 2, unless otherwise noted.) A OUTPUT VOLTAGE vs. OUTPUT CURRENT AND ERROR AMPLIFIER GAIN ( 1.600 1.575 1.550 1.525 R /R ...

Page 8

Output, Parallelable, Average-Current-Mode DC-DC Controllers (T = +25°C, Figures 1 and 2, unless otherwise noted.) A LOW-SIDE DRIVER (DL) RISE TIME MAX5060 toc19 C = 22nF LOAD V = 12V IN 2V/div 40ns/div INPUT STARTUP RESPONSE MAX5060 ...

Page 9

Average-Current-Mode DC-DC Controllers (T = +25°C, Figures 1 and 2, unless otherwise noted.) A REVERSE CURRENT SINK AT ENABLE TURN- 12V 1.5V 2.0V) IN OUT EXTERNAL MAX5060 toc28 2A/div 200 s/div FREQUENCY vs. TEMPERATURE ...

Page 10

Output, Parallelable, Average-Current-Mode DC-DC Controllers PIN NAME MAX5060 MAX5061 1 3 PGND N. BST 22 SGND 9 — CLKOUT 10 ...

Page 11

Output, Parallelable, Average-Current-Mode DC-DC Controllers PIN NAME MAX5060 MAX5061 17 12 EAOUT 18 13 EAN 19 — DIFF 20 14 CSN 21 15 CSP 23 — SENSE- 24 — SENSE ...

Page 12

Output, Parallelable, Average-Current-Mode DC-DC Controllers V = 12V IN C1, C2 R13 SENSE- SENSE+ R EXT LIM MAX5060 OFF V_IOUT V_IOUT (VOLTAGE I ) OUT OVI R IN DIFF EAN ...

Page 13

Average-Current-Mode DC-DC Controllers SYNC R T OFF Figure 2. Typical Application Circuit ______________________________________________________________________________________ 0.6V to 5.5V Output, Parallelable, Typical Application Circuit (continued 12V IN C1, C2 R13 CSN ...

Page 14

Output, Parallelable, Average-Current-Mode DC-DC Controllers LDO REGULATOR V CC LIM CLP CSP CSN V_IOUT V CLAMP LOW SGND RT/SYNC OSCILLATOR CLKOUT GENERATOR DIFF +0.6V SENSE- DIFF ...

Page 15

Average-Current-Mode DC-DC Controllers 0. LDO REGULATOR V CC LIM CLP CSP CSN SGND RT/SYNC/EN OSCILLATOR RAMP GENERATOR EAOUT ERROR AMP EAN VEA SOFT 0.6V REF START Figure 4. Functional Diagram ...

Page 16

Output, Parallelable, Average-Current-Mode DC-DC Controllers Detailed Description The MAX5060/MAX5061 are high-performance average- current-mode PWM controllers. The average-current- mode control technique offers inherently stable operation, reduces component derating and size by accurately controlling the inductor current. This also ...

Page 17

Average-Current-Mode DC-DC Controllers Internal Oscillator The internal oscillator generates a clock with the fre- quency proportional to the inverse of R frequency is adjustable from 125kHz to 1.5MHz with better than 8% accuracy using a single resistor con- nected from ...

Page 18

Output, Parallelable, Average-Current-Mode DC-DC Controllers The MAX5060/MAX5061 use an average-current-mode control scheme to regulate the output voltage (Figure 5). The main control loop consists of an inner current loop and an outer voltage loop. The inner loop ...

Page 19

Average-Current-Mode DC-DC Controllers Current-Sense Amplifier The differential current-sense amplifier (CA) provides a DC gain of 34.5. The maximum input offset voltage of the current-sense amplifier is 1mV and the common- mode voltage range 5.5V ( ...

Page 20

Output, Parallelable, Average-Current-Mode DC-DC Controllers where I = peak-to-peak inductor current. Choose L RC2 = 5.1V, and R CC SENSE sense resistor. Note that the current limit of MAX5061 is reduced by 3mV ...

Page 21

Average-Current-Mode DC-DC Controllers The MAX5060 includes a power-good generator (PGOOD) for undervoltage protection (UVP), and a reverse current-limit protection; the MAX5060/MAX5061 include a hiccup current-limit protection to prevent dam- age to the powered electronic circuits. Additionally, the MAX5060 includes output ...

Page 22

Output, Parallelable, Average-Current-Mode DC-DC Controllers Parallel Operation For applications requiring large output current, parallel two or more MAX5060s (multiphase operation) to increase the available output current. The paralleled converters operate at the same switching frequency but different ...

Page 23

Average-Current-Mode DC-DC Controllers SENSE- SENSE+ CSN CSP MAX5060 DIFF LX EAN DL EAOUT RT/SYNC PGND SGND CLKOUT Figure 11. Parallel Configuration of Multiple MAX5060s ______________________________________________________________________________________ 0.6V to 5.5V Output, Parallelable, 90 PHASE DELAY CIRCUIT V IN ...

Page 24

Output, Parallelable, Average-Current-Mode DC-DC Controllers Applications Information Inductor Selection The switching frequency, peak inductor current, and allowable ripple at the output determine the value and size of the inductor. Selecting higher switching frequen- cies reduces the inductance ...

Page 25

Average-Current-Mode DC-DC Controllers RMS HI where OUT IN DC OUT ( /2). OUT MOS ...

Page 26

Output, Parallelable, Average-Current-Mode DC-DC Controllers Keep the maximum output voltage deviation less than or equal to the adaptive voltage-positioning window ( V ). Assume 50% contribution each from the out- OUT put capacitance discharge and the ESR ...

Page 27

Average-Current-Mode DC-DC Controllers Use the following equation to calculate the resistor OUT C provides a low-frequency pole while midband zero. Place a zero (f bump at the crossover frequency. Place ...

Page 28

Output, Parallelable, Average-Current-Mode DC-DC Controllers TOP VIEW MAX5060 26 27 EXPOSED PAD THIN QFN 28 ______________________________________________________________________________________ ...

Page 29

Average-Current-Mode DC-DC Controllers (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information go to www.maxim-ic.com/packages.) D D/2 MARKING AAAAA PIN # 1 I.D. C -DRAWING NOT TO SCALE- ______________________________________________________________________________________ ...

Page 30

Output, Parallelable, Average-Current-Mode DC-DC Controllers (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information go to www.maxim-ic.com/packages.) COMMON DIMENSIONS PKG. 16L 5x5 20L 5x5 SYMBOL MIN. ...

Page 31

... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________ 31 © 2005 Maxim Integrated Products ...

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