MAX5069AEVKIT Maxim Integrated Products, MAX5069AEVKIT Datasheet

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MAX5069AEVKIT

Manufacturer Part Number
MAX5069AEVKIT
Description
EVAL KIT FOR MAX5069A
Manufacturer
Maxim Integrated Products
Datasheets
1.MAX5069CAUE.pdf (19 pages)
2.MAX5069AEVKIT.pdf (9 pages)

Specifications of MAX5069AEVKIT

Main Purpose
DC/DC, Step Down
Outputs And Type
1, Isolated
Voltage - Output
12V
Current - Output
10A
Voltage - Input
36 ~ 72V
Regulator Topology
Buck
Frequency - Switching
500kHz
Board Type
Fully Populated
Utilized Ic / Part
MAX5069A
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Power - Output
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
The MAX5069 is a high-frequency, current-mode,
pulse-width modulation (PWM) controller (with dual
MOSFET drivers) that integrates all the building blocks
necessary for implementing AC-DC or DC-DC fixed-fre-
quency power supplies. Isolated or nonisolated push-
pull and half/full-bridge power supplies are easily
constructed using either primary- or secondary-side
regulation. Current-mode control with leading-edge
blanking simplifies control-loop design and a program-
mable internal slope-compensation circuit stabilizes the
current loop when operating at duty cycles above 50%.
An input undervoltage lockout (UVLO) programs the
input-supply startup voltage and ensures proper opera-
tion during brownout conditions.
A single external resistor programs the oscillator frequen-
cy from 50kHz to 2.5MHz. The MAX5069A/D provide a
SYNC input for synchronization to an external clock. The
maximum FET-driver duty cycle for the MAX5069 is 50%.
Programmable dead time allows additional flexibility in
optimizing magnetic design and overcoming parasitic
effects. Programmable hiccup current limit provides
additional protection under severe faults.
The MAX5069 is specified over the -40°C to +125°C auto-
motive temperature range and is available in a
16-pin thermally enhanced TSSOP-EP package. Refer to
the MAX5068 data sheet for single FET-driver applications.
Warning: The MAX5069 is designed to work with high
voltages. Exercise caution.
19-3175; Rev 1; 7/04
Selector Guide appears at end of data sheet.
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.
High-Frequency, Current-Mode PWM Controller
with Accurate Oscillator and Dual FET Drivers
Universal-Input AC Power Supplies
Isolated Telecom Power Supplies
Networking System Power Supplies
Server Power Supplies
Industrial Power Conversion
________________________________________________________________ Maxim Integrated Products
General Description
Applications
♦ Current-Mode Control with 47µA (typ) Startup
♦ Oscillator Frequency Programmable to 2.5MHz
♦ Resistor-Programmable ±4.5% Accurate
♦ Dual Gate-Drive Output for Half/Full-Bridge or
♦ Rectified 85VAC to 265VAC, or 36VDC to 72VDC
♦ Input Directly Driven from 10.8V to 24V
♦ Programmable Dead Time and Slope
♦ Programmable Startup Voltage (UVLO)
♦ Programmable UVLO Hysteresis (MAX5069B/C)
♦ Frequency Synchronization Input (MAX5069A/D)
♦ -40°C to +125°C Automotive Temperature Range
♦ 16-Pin Thermally Enhanced TSSOP-EP Package
*EP = Exposed pad.
MAX5069AAUE
MAX5069BAUE
MAX5069CAUE
MAX5069DAUE
Current
Switching Frequency
Push-Pull Applications
Input (MAX5069A/B)
(MAX5069C/D)
Compensation
TOP VIEW
PART
*MAX5069B/C.
SYNC(HYST*)
UVLO/EN
SCOMP
FLTINT
COMP
RT
DT
FB
1
2
6
3
4
5
7
8
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
TEMP RANGE
Ordering Information
TSSOP-EP
MAX5069
Pin Configuration
16
15
14
13
12
11
10
9
REG5
IN
V
NDRVA
NDRVB
PGND
AGND
CS
CC
PIN-PACKAGE
16 TSSOP-EP*
16 TSSOP-EP*
16 TSSOP-EP*
16 TSSOP-EP*
Features
1

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MAX5069AEVKIT Summary of contents

Page 1

... Networking System Power Supplies Server Power Supplies Industrial Power Conversion Selector Guide appears at end of data sheet. ________________________________________________________________ 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. ♦ Current-Mode Control with 47µA (typ) Startup Current ♦ ...

Page 2

High-Frequency, Current-Mode PWM Controller with Accurate Oscillator and Dual FET Drivers ABSOLUTE MAXIMUM RATINGS IN to PGND ............................................................-0.3V to +30V IN to AGND.............................................................-0.3V to +30V V to PGND..........................................................-0.3V to +13V AGND..........................................................-0.3V to +13V CC FB, COMP, CS, ...

Page 3

High-Frequency, Current-Mode PWM Controller with Accurate Oscillator and Dual FET Drivers ELECTRICAL CHARACTERISTICS (continued +12V for the MAX5069C/ 1µ 100kΩ, NDRV_ = floating, T VCC RT PARAMETER SYMBOL CS Input Bias ...

Page 4

High-Frequency, Current-Mode PWM Controller with Accurate Oscillator and Dual FET Drivers ELECTRICAL CHARACTERISTICS (continued +12V for the MAX5069C/ 1µ 100kΩ, NDRV_ = floating, T VCC RT PARAMETER SYMBOL NDRV_ Switching Frequency ...

Page 5

High-Frequency, Current-Mode PWM Controller with Accurate Oscillator and Dual FET Drivers (V = +23.6V for MAX5069A/B at startup, then reduces to +12V 100kΩ, NDRV_ = floating 0V BOOTSTRAP UVLO WAKE-UP LEVEL ...

Page 6

High-Frequency, Current-Mode PWM Controller with Accurate Oscillator and Dual FET Drivers (V = +23.6V for MAX5069A/B at startup, then reduces to +12V 100kΩ, NDRV_ = floating 0V REG5 OUTPUT VOLTAGE vs. ...

Page 7

High-Frequency, Current-Mode PWM Controller with Accurate Oscillator and Dual FET Drivers (V = +23.6V for MAX5069A/B at startup, then reduces to +12V 100kΩ, NDRV_ = floating 0V FLTINT CURRENT vs. TEMPERATURE ...

Page 8

High-Frequency, Current-Mode PWM Controller with Accurate Oscillator and Dual FET Drivers PIN NAME MAX5069A MAX5069B MAX5069D MAX5069C — SYNC — 2 HYST 3 3 SCOMP UVLO/ ...

Page 9

High-Frequency, Current-Mode PWM Controller with Accurate Oscillator and Dual FET Drivers Detailed Description The MAX5069 is a current-mode, dual MOSFET driver, PWM controller designed for isolated and nonisolated push-pull or half-/full-bridge power-supply applications. A bootstrap UVLO with a programmable hysteresis, ...

Page 10

High-Frequency, Current-Mode PWM Controller with Accurate Oscillator and Dual FET Drivers FLTINT MAX5069B REG5 SCOMP AGND PGND Figure 1. Nonisolated Power Supply with Programmable Input Supply ...

Page 11

High-Frequency, Current-Mode PWM Controller with Accurate Oscillator and Dual FET Drivers MAX5069A/D 1.23V 1.18V Figure 2. Setting the MAX5069A/D Undervoltage Lockout Threshold hysteresis that allows the user to set a voltage (V disable the controller (see Figure 3). At the ...

Page 12

High-Frequency, Current-Mode PWM Controller with Accurate Oscillator and Dual FET Drivers MAX5069A/B Startup Operation Normally derived from the tertiary winding of the IN transformer. However, at startup there is no energy delivered through the transformer; hence, a special ...

Page 13

High-Frequency, Current-Mode PWM Controller with Accurate Oscillator and Dual FET Drivers FLTINT C3 MAX5069B REG5 SCOMP AGND PGND Figure 6. Secondary-Side, Regulated, Isolated Power Supply ...

Page 14

High-Frequency, Current-Mode PWM Controller with Accurate Oscillator and Dual FET Drivers Oscillator/Switching Frequency Use an external resistor program the MAX5069 internal oscillator frequency from 50kHz to 2.5MHz. The MAX5069 NDRVA/NDRVB switching frequency is one half of the ...

Page 15

High-Frequency, Current-Mode PWM Controller with Accurate Oscillator and Dual FET Drivers Note that cycle-by-cycle current limiting is provided at all times by CS with a threshold of 314mV (typ). The fault-integration circuit forces a 60µA current onto FLTINT each time ...

Page 16

High-Frequency, Current-Mode PWM Controller with Accurate Oscillator and Dual FET Drivers The current-sense resistor (R ), connected between CS the source of the MOSFET and ground, sets the current limit. The CS input has a voltage trip level (V 314mV. ...

Page 17

High-Frequency, Current-Mode PWM Controller with Accurate Oscillator and Dual FET Drivers ______________________________________________________________________________________ Typical Operating Circuit 17 ...

Page 18

High-Frequency, Current-Mode PWM Controller with Accurate Oscillator and Dual FET Drivers HYST** UVLO/EN UVLO 1.23V/ 1.18V 2.8V/ 1.6V 60µA Q FLTINT CURRENT-LIMIT COMPARATOR 314mV 5kΩ CS 70ns AGND BLANKING SCOMP COMPENSATION DIGITAL 1.23V SOFT-START FB *MAX5069A/D **MAX5069B/C 18 ______________________________________________________________________________________ MAX5069 ...

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 © 2004 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products ...

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