MAX15020EVKIT+ Maxim Integrated Products, MAX15020EVKIT+ Datasheet

no-image

MAX15020EVKIT+

Manufacturer Part Number
MAX15020EVKIT+
Description
EVAL KIT FOR MAX15020
Manufacturer
Maxim Integrated Products
Datasheets
1.MAX15020ATP.pdf (19 pages)
2.MAX15020EVKIT.pdf (7 pages)

Specifications of MAX15020EVKIT+

Main Purpose
DC/DC, Step Down
Outputs And Type
1, Non-Isolated
Voltage - Output
30V
Current - Output
2A
Voltage - Input
7.5 ~ 40V
Regulator Topology
Buck
Board Type
Fully Populated
Utilized Ic / Part
MAX15020
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Power - Output
-
Frequency - Switching
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
The MAX15020 high-voltage step-down DC-DC con-
verter operates over an input voltage range of 7.5V to
40V. The device integrates a 0.2Ω high-side switch and
is capable of delivering 2A load current with excellent
load and line regulation. The output is dynamically
adjustable from 0.5V to 36V through the use of an exter-
nal reference input (REFIN). The MAX15020 consumes
only 6µA in shutdown mode.
The device utilizes feed-forward voltage-mode architec-
ture for good noise immunity in the high-voltage switch-
ing environment and offers external compensation for
maximum flexibility. The switching frequency is selec-
table to 300kHz or 500kHz and can be synchronized to
an external clock signal of 100kHz to 500kHz by using
the SYNC input. The IC features a maximum duty cycle
of 95% (typ) at 300kHz.
The device includes configurable undervoltage lockout
(UVLO) and soft-start. Protection features include
cycle-by-cycle current limit, hiccup-mode for output
short-circuit protection, and thermal shutdown. The
MAX15020 is available in a 20-pin TQFN 5mm x 5mm
package and is rated for operation over the
-40°C to +125°C temperature range.
19-0811; Rev 0; 4/07
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.
Printer Head Driver Power Supply
Automotive Power Supply
Industrial Power Supply
Step-Down Power Supply
(7.5V TO 40V)
2A, 40V Step-Down DC-DC Converter with
INPUT
PWM
V
IN
________________________________________________________________ Maxim Integrated Products
Dynamic Output-Voltage Programming
General Description
Applications
ON/OFF
REFIN
EP
REFOUT
SS
IN
SYNC GND FSEL PGND
MAX15020
REG
DVREG
o Wide 7.5V to 40V Input Voltage Range
o 2A Output Current, Up to 96% Efficiency
o Dynamic Programmable Output Voltage (0.5V to
o Maximum Duty Cycle of 95% (typ) at 300kHz
o 100kHz to 500kHz Synchronizable SYNC
o Configurable UVLO and Soft-Start
o Low-Noise, Voltage-Mode Step-Down Converter
o Programmable Output-Voltage Slew Rate
o Lossless Constant Current Limit with Fixed
o Extremely Low-Power Consumption (< 6µA typ) in
o 20-Pin (5mm x 5mm) Thin QFN Package
+ Denotes a lead-free package.
* EP = Exposed pad.
Pin Configuration appears at end of data sheet.
MAX15020ATP+
36V)
Frequency Range
Timeout to Hiccup Mode
Shutdown Mode
PART
COMP
BST
LX
FB
Typical Operating Circuit
-40°C to +125°C
TEMP RANGE
Ordering Information
PIN-
PACKAGE
20 TQFN-EP*
(5mm x 5mm)
(0.5V TO 36V)
V
OUT
Features
T2055-5
CODE
PKG
1

Related parts for MAX15020EVKIT+

Image
Part Number
Description
Manufacturer
Datasheet
Request R
MAX15020
Part Number:
MAX15020
Description:
Step-Down DC-DC Converter
Manufacturer:
Maxim Integrated Products
Datasheet:
MAX15020.pdf (19 pages)
MAX7528KCWP
Part Number:
MAX7528KCWP
Description:
MAX7528KCWPMaxim Integrated Products [CMOS Dual 8-Bit Buffered Multiplying DACs]
Manufacturer:
Maxim Integrated Products
Datasheet:
MAX7528KCWP.pdf (12 pages)
MAX3261CCJ
Part Number:
MAX3261CCJ
Description:
Single +5V, fully integrated, 1.25Gbps laser diode driver.
Manufacturer:
Maxim Integrated Products
Datasheet:
MAX3261CCJ.pdf (12 pages)
MAX3263CAG
Part Number:
MAX3263CAG
Description:
Single +5V, fully integrated, 155Mbps laser diode driver.
Manufacturer:
Maxim Integrated Products
Datasheet:
MAX3263CAG.pdf (12 pages)
MAX8809AETL+
Part Number:
MAX8809AETL+
Description:
VRD11/VRD10, K8 Rev F 2/3/4-Phase PWM Controllers with Integrated Dual MOSFET Drivers
Manufacturer:
Maxim Integrated Products
Datasheet:
MAX8809AETL.pdf (50 pages)
MAX1535CETJ+T
Part Number:
MAX1535CETJ+T
Description:
Highly Integrated Level 2 SMBus Battery Chargers
Manufacturer:
Maxim Integrated Products
Datasheet:
MAX1535CETJT.pdf (39 pages)
DS2741N+
Part Number:
DS2741N+
Description:
Current Monitor and Accumulator with Integrated Sense Resistor; ; Temperature Range: -40°C to +85°C
Manufacturer:
Maxim Integrated Products
MAX13450EAUD+T
Part Number:
MAX13450EAUD+T
Description:
TSSOP 14/A°/RS-485 Transceivers with Integrated 100O/120O Termination Resis
Manufacturer:
Maxim Integrated Products
MAX13451EAUD+T
Part Number:
MAX13451EAUD+T
Description:
TSSOP 14/A°/RS-485 Transceivers with Integrated 100O/120O Termination Resis
Manufacturer:
Maxim Integrated Products
MAX17497BATE+
Part Number:
MAX17497BATE+
Description:
QFN 16/A°/AC-DC and DC-DC Peak-Current-Mode Converters with Integrated Step
Manufacturer:
Maxim Integrated Products
MAX17502FATB+T
Part Number:
MAX17502FATB+T
Description:
TDFN/A/65V, 1A, 600KHZ, SYNCHRONOUS STEP-DOWN REGULATOR WITH INTEGRATED SWI
Manufacturer:
Maxim Integrated Products
MAX1978EVKIT
Part Number:
MAX1978EVKIT
Description:
Integrated Temperature Controller f
Manufacturer:
Maxim Integrated Products
MAX2606EUT+
Part Number:
MAX2606EUT+
Description:
SOT23-6/I°/45MHz to 650MHz, Integrated IF VCOs with Differential Output
Manufacturer:
Maxim Integrated Products
MAX2608EUT+
Part Number:
MAX2608EUT+
Description:
SOT23-6/I°/45MHz to 650MHz, Integrated IF VCOs with Differential Output
Manufacturer:
Maxim Integrated Products
MAX2831EVKIT+
Part Number:
MAX2831EVKIT+
Description:
EVALUATION KIT/2.4GHZ TO 2.5GHZ 802.11G/B RF TRANSCEIVER WITH INTEGRATED PA
Manufacturer:
Maxim Integrated Products

MAX15020EVKIT+ Summary of contents

Page 1

... Step-Down Power Supply V IN (7.5V TO 40V) PWM 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. o Wide 7.5V to 40V Input Voltage Range o 2A Output Current 96% Efficiency o Dynamic Programmable Output Voltage (0.5V to ...

Page 2

Step-Down DC-DC Converter with Dynamic Output-Voltage Programming ABSOLUTE MAXIMUM RATINGS IN, ON/OFF to GND........…. ...................................-0.3V to +45V LX to GND................................................-0.715V to (V BST to GND ..................................................-0. BST to LX................................................................-0.3V to +12V PGND GND .................................................-0.3V ...

Page 3

Step-Down DC-DC Converter with Dynamic Output-Voltage Programming ELECTRICAL CHARACTERISTICS (continued 36V REG DVREG PGND unless otherwise noted. Typical values are at T PARAMETER SYMBOL SOFT-START/REFIN/REFOUT/FB Soft-Start Current REFOUT ...

Page 4

Step-Down DC-DC Converter with Dynamic Output-Voltage Programming (V = 36V, Circuit of Figure +25°C, unless otherwise noted UNDERVOLTAGE LOCKOUT HYSTERESIS vs. TEMPERATURE 1.0 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0 ...

Page 5

Step-Down DC-DC Converter with Dynamic Output-Voltage Programming (V = 36V, Circuit of Figure TURN-ON/TURN-OFF WAVEFORM MAX15020 toc09 V ON/OFF V OUT V = 12V 27Ω IN LOAD 10ms/div EFFICIENCY vs. LOAD CURRENT ...

Page 6

Step-Down DC-DC Converter with Dynamic Output-Voltage Programming (V = 36V, Circuit of Figure +25°C, unless otherwise noted LOAD TRANSIENT MAX15020 toc16 V OUT I OUT V = 40V 30V IN OUT ...

Page 7

Step-Down DC-DC Converter with Dynamic Output-Voltage Programming (V = 36V, Circuit of Figure +25°C, unless otherwise noted SOFT-START VOLTAGE RISE vs. REFIN VOLTAGE RISE 0.1µ 0 ...

Page 8

Step-Down DC-DC Converter with Dynamic Output-Voltage Programming PIN NAME 1 COMP Voltage-Error-Amplifier Output. Connect COMP to the necessary compensation feedback network. Feedback Regulation Point. Connect to the center tap of an external resistor-divider connected between 2 FB the ...

Page 9

Step-Down DC-DC Converter with Dynamic Output-Voltage Programming IN LDO REF REG EN THERMAL REF REF REFOUT SHDN ICSS SSA REFIN SS E/A FB COMP IN EN RAMP SYNC OSC FSEL Figure 1. Functional Diagram _______________________________________________________________________________________ ON/OFF REF OK ...

Page 10

Step-Down DC-DC Converter with Dynamic Output-Voltage Programming V IN 7.5V TO 40V C1 R1 560µF 97.5kΩ R2 4.02kΩ C10 1µF R3 10kΩ PWM INPUT C9 0.1µF 0Ω Figure 2. Typical Application Circuit Detailed Description The MAX15020 voltage-mode step-down ...

Page 11

Step-Down DC-DC Converter with Dynamic Output-Voltage Programming At startup, after V is applied and the UVLO threshold IN is reached, a 15µA (typ) current is sourced into the capacitor (C ) connected from SS to GND forcing the ...

Page 12

Step-Down DC-DC Converter with Dynamic Output-Voltage Programming Applications Information Setting the ON/ OFF Threshold When the voltage at ON/OFF rises above 1.225V, the MAX15020 turns on. Connect a resistive divider from IN to ON/OFF to GND to set ...

Page 13

Step-Down DC-DC Converter with Dynamic Output-Voltage Programming Input Capacitor Selection The discontinuous input current of the buck converter causes large input ripple currents and therefore the input capacitor must be carefully chosen to keep the input-voltage ripple within ...

Page 14

Step-Down DC-DC Converter with Dynamic Output-Voltage Programming Compensation Design The MAX15020 uses a voltage-mode control scheme that regulates the output voltage by comparing the error-amplifier output (COMP) with an internal ramp to produce the required duty cycle. The ...

Page 15

Step-Down DC-DC Converter with Dynamic Output-Voltage Programming C13 R9 C11 OUT FB ERROR R8 AMPLIFIER SS CLOSED-LOOP GAIN GAIN (dB Figure 3. Error-Amplifier Compensation Circuit (Closed-Loop and Error-Amplifier Gain ...

Page 16

Step-Down DC-DC Converter with Dynamic Output-Voltage Programming Power Dissipation The MAX15020 is available in a thermally enhanced package and can dissipate When the die temperature reaches +160°C, the part shuts down and is ...

Page 17

Step-Down DC-DC Converter with Dynamic Output-Voltage Programming Pin Configuration TOP VIEW MAX15020 REG 19 GND THIN QFN (5mm x 5mm) ______________________________________________________________________________________ PROCESS: ...

Page 18

Step-Down DC-DC Converter with Dynamic Output-Voltage Programming (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.) 18 ______________________________________________________________________________________ Package Information ...

Page 19

... 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 ____________________ 19 © 2007 Maxim Integrated Products Package Information (continued registered trademark of Maxim Integrated Products, Inc ...

Related keywords