MAX17595EVKIT# Maxim Integrated, MAX17595EVKIT# Datasheet

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MAX17595EVKIT#

Manufacturer Part Number
MAX17595EVKIT#
Description
Power Management IC Development Tools MAX17595 Eval Kit
Manufacturer
Maxim Integrated
Datasheet
1.MAX17595EVKIT.pdf (22 pages)

Specifications of MAX17595EVKIT#

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The MAX17595/MAX17596/MAX17597 is a family of peak-
current-mode controllers for design of wide input-voltage
flyback and boost regulators. The MAX17595 offers
optimized input thresholds for universal input AC-DC
converters and telecom DC-DC (36V to 72V input range)
power supplies. The MAX17596/MAX17597 offer input
thresholds suitable for low-voltage DC-DC applications
(4.5V to 36V). The MAX17597 implements a boost con-
verter. All three controllers contain a built-in gate driver
for external n-channel MOSFETs.
The
an internal error amplifier with 1% accurate ref-
erence,
reference. The switching frequency is programmable
from 100kHz to 1MHz with an accuracy of 8% , allowing
optimization of magnetic and filter components, result-
ing in compact and cost-effective power conversion. For
EMI-sensitive applications, the MAX17595/MAX17596/
MAX17597 family incorporates a programmable frequen-
cy dithering scheme, enabling low-EMI spread-spectrum
operation.
Users can start the power supply precisely at the desired
input voltage, implement input overvoltage protection, and
program soft-start time. A programmable slope com-
pensation scheme is provided to ensuree stability of the
peak-current-mode control scheme.
Hiccup-mode overcurrent protection and thermal
shutdown are provided to minimize dissipation in
overcurrent and overtemperature fault conditions.
For related parts and recommended products to use with this part,
refer to www.maximintegrated.com/MAX17595.related.
For pricing, delivery, and ordering information, please contact Maxim Direct
at 1-888-629-4642, or visit Maxim’s website at www.maximintegrated.com.
Universal Input Offline AC-DC Power Supplies
Wide-Range DC-Input Flyback/Boost Battery
Chargers
Battery-Powered Applications
Industrial, Telecom, and Automotive Applications
MAX17595/ MAX17596 / MAX17597
eliminating
the
General Description
need
Applications
for
Peak-Current-Mode Controllers for
MAX17595/MAX17596/MAX17597
an
external
Flyback and Boost Regulators
house
S Peak-Current-Mode Offline (Universal Input AC)
S Peak-Current-Mode DC-DC (4.5V to 36V) Flyback
S Peak-Current-Mode Nonsynchronous (4.5V to 36V)
S Current Mode Control Provides Excellent
S Low 20µA Startup Supply Current
S 100kHz to 1MHz Programmable Switching
S Programmable Frequency Dithering for Low-EMI
S Adjustable Current Limit with External Current-
S Fast Cycle-By-Cycle Peak Current Limiting
S Hiccup-Mode Short-Circuit Protection
S Overtemperature Protection
S Programmable Soft-Start and Slope Compensation
S Input Overvoltage Protection
S Space-Saving, 3mm x 3mm TQFN Package
Ordering Information/Selector Guide
data sheet.
and Telecom (36V to 72V) Flyback Controller—
MAX17595
Controller—MAX17596
Boost PWM Controller—MAX17597
Transient Response
Frequency with Optional Synchronization
Spread-Spectrum Operation
Sense Resistor
Benefits and Features
EVALUATION KIT AVAILABLE
appears at end of
19-6178; Rev 1; 2/13

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MAX17595EVKIT# Summary of contents

Page 1

General Description The MAX17595/MAX17596/MAX17597 is a family of peak- current-mode controllers for design of wide input-voltage flyback and boost regulators. The MAX17595 offers optimized input thresholds for universal input AC-DC converters and telecom DC-DC (36V to 72V input range) power ...

Page 2

... IN IN-SW V Clamp Voltage V IN ENABLE (EN Undervoltage Threshold V EN Input Leakage Current I Maxim Integrated MAX17595/MAX17596/MAX17597 Peak-Current-Mode Controllers for Flyback and Boost Regulators Maximum Input/Output Current (Continuous NDRV (pulsed, for less than 100ns) .......................... 1.5A/-0.9A Continuous Power Dissipation TQFN (single-layer board) + 0.3)V DRV + 0.3)V IN Operating Temperature Range ........................ -40NC to +125NC Storage Temperature Range ...

Page 3

... Input Synchronization Pulse Width Synchronization Frequency f SYNC Range DITHERING RAMP GENERATOR (DITHER/SYNC) Charging Current Discharging Current Ramp-High Trip Point Ramp-Low Trip Point Maxim Integrated MAX17595/MAX17596/MAX17597 Peak-Current-Mode Controllers for Flyback and Boost Regulators up to 21V for startup 25kI VIN = T = +25NC ...

Page 4

... Current-Limit Events to N HICCUP-R Hiccup Overcurrent Hiccup Timeout Minimum On-Time t ON-MIN SLOPE COMPENSATION (SLOPE) Slope Bias Current I SLOPE Slope Resistor Range Maxim Integrated MAX17595/MAX17596/MAX17597 Peak-Current-Mode Controllers for Flyback and Boost Regulators up to 21V for startup 25kI VIN = T = +25NC.) (Note 2) A ...

Page 5

... Externally limit the maximum current to V Note 4: Using an external clock for synchronization increases the maximum duty cycle by a factor equal to f MAX17595/MAX17596. External synchronization is not available for the MAX17597. Maxim Integrated MAX17595/MAX17596/MAX17597 Peak-Current-Mode Controllers for Flyback and Boost Regulators ...

Page 6

... TEMPERATURE (°C) EN/UVLO FALLING THRESHOLD vs. TEMPERATURE 1.149 1.148 1.147 1.146 1.145 -40 - TEMPERATURE (°C) Maxim Integrated MAX17595/MAX17596/MAX17597 Peak-Current-Mode Controllers for Flyback and Boost Regulators = 1FF 1FF, T VIN VDRV V WAKE-UP LEVEL vs. TEMPERATURE IN (MAX17596/MAX17597) 4.13 4.12 4.11 4.10 4.09 4.08 4.07 100 120 -40 - TEMPERATURE (°C) ...

Page 7

... FREQUENCY SELECTION RESISTOR ( FREQUENCY DITHERING vs 200 300 400 500 600 R DITHER Maxim Integrated MAX17595/MAX17596/MAX17597 Peak-Current-Mode Controllers for Flyback and Boost Regulators Typical Operating Characteristics (continued) = 1FF 1FF, T VIN VDRV V SUPPLY CURRENT UNDER UVLO IN vs. TEMPERATURE 25.5 24.5 23.5 22.5 21 ...

Page 8

... SWITCHING FREQUENCY (Hz) BODE PLOT (FIGURE 9 OUTPUT) BANDWIDTH = 11.5kHz PHASE MARGIN = 50.9° Maxim Integrated MAX17595/MAX17596/MAX17597 Peak-Current-Mode Controllers for Flyback and Boost Regulators Typical Operating Characteristics (continued) = 1FF 1FF, T VIN VDRV ENABLE SHUTDOWN MAX17595/6/7 toc16 EN/UVLO 5V/div ...

Page 9

... Signal Ground. Connect SGND to the signal ground plane Current-Sense Input. Peak-current-limit trip voltage is 300mV (typ). 10 PGND Power Ground. Connect PGND to the power ground plane. 11 NDRV External Switching nMOS Gate-Driver Output Maxim Integrated MAX17595/MAX17596/MAX17597 Peak-Current-Mode Controllers for Flyback and Boost Regulators SGND 8 MAX17595 ...

Page 10

... MAX17595 are respected. Maxim Integrated MAX17595/MAX17596/MAX17597 Peak-Current-Mode Controllers for Flyback and Boost Regulators Regulator Input. Connect V DRV The MAX17595 implements a rising and falling UVLO threshold that allows successfully used in univer- ...

Page 11

... UVLO EN / UVLO 1.21V OVI 1.21V RT 10µA CHIPPEN SS SS 1.21V SGND Figure 1. MAX17595/MAX17596/MAX17597 Block Diagram (*See Note 4.) Maxim Integrated MAX17595/MAX17596/MAX17597 Peak-Current-Mode Controllers for Flyback and Boost Regulators THERMAL SENSOR CONTROL AND DRIVER LOGIC HICCUP 8 PEAK EVENTS OR 1 RUNAWAY CHIPEN OSC OSC ...

Page 12

... DITHER to RT. Spread-spectrum modulation technique spreads the energy of switching frequency and its har- monics over a wider band while reducing their peaks, helping to meet stringent EMI goals. Maxim Integrated MAX17595/MAX17596/MAX17597 Peak-Current-Mode Controllers for Flyback and Boost Regulators The devices’ EN/UVLO pin serves as an enable/disable input, as well as an accurate programmable input UVLO pin ...

Page 13

... Hz, and t is the soft-start time programmed for the fly- SS back converter in ms cummulative capacitor VDRV used in V node in μF. See the DRV of Flyback/Boost Converter (SS) Maxim Integrated MAX17595/MAX17596/MAX17597 Peak-Current-Mode Controllers for Flyback and Boost Regulators Startup Operation UVLO IN ), START reaches the ...

Page 14

... START C START Figure 3. MAX17595 RC-Based Startup Circuit SUM C START Figure 4. MAX17595 Current-Source-Based Startup Circuit Maxim Integrated MAX17595/MAX17596/MAX17597 Peak-Current-Mode Controllers for Flyback and Boost Regulators from the SS pin to SGND. Capacitor C lated as: W 6.3) k − where t applicable to the boost converter application circuit of Figure 11. For optoisolated converters, the soft-start ...

Page 15

... 6. Figure 6. MAX17596/MAX17597 Typical Startup Circuit with Bias Winding to Turn Off Q1 and Reduce Power Dissipation Maxim Integrated MAX17595/MAX17596/MAX17597 Peak-Current-Mode Controllers for Flyback and Boost Regulators selected in the 20kI to 50kI range, R lated as: The devices include a robust overcurrent protection scheme , and ...

Page 16

... SLOPE pin unconnected rec- ommended that discontinuous-mode designs also use this minimum amount of slope compensation to provide better noise immunity and jitter-free operation. Maxim Integrated MAX17595/MAX17596/MAX17597 Peak-Current-Mode Controllers for Flyback and Boost Regulators : I Figure 7 ...

Page 17

... FB pin. Loop compensation is applied at the COMP pin as an R-C network from COMP to GND that imple- ments the required poles and zeros, as shown in Figure Maxim Integrated MAX17595/MAX17596/MAX17597 Peak-Current-Mode Controllers for Flyback and Boost Regulators 8. The boost converter application circuit of Figure 11 for the MAX17597 uses this approach ...

Page 18

... SGND 549kI R13 549kI 22kI R4 549kI R5 19.8kI R6 4.99kI SGND Figure 9. MAX17595 Typical Application Circuit (Universal Offline Isolated Power Supply) Maxim Integrated MAX17595/MAX17596/MAX17597 Peak-Current-Mode Controllers for Flyback and Boost Regulators IN R15 R16 D2 402kI 402kI C9 4.7µF 50V R14 402kI V IN PGND C5 ...

Page 19

... COMP PGND 348kI EN /UVLO C8 R6 100nF 20kI OVI R7 10kI SGND Figure 10. MAX17596 Typical Application Circuit (Power Supply for DC-DC Applications) Maxim Integrated MAX17595/MAX17596/MAX17597 Peak-Current-Mode Controllers for Flyback and Boost Regulators Typical Operating Circuits (continued 750I 0.1µF, 50V NDRV N1 ...

Page 20

... V OUT R4 1.96kI C5 C6 33nF 330pF 187kI R6 18kI R7 18kI Figure 11. MAX17597 Typical Application Circuit (Nonsynchronous Boost Converter) Maxim Integrated MAX17595/MAX17596/MAX17597 Peak-Current-Mode Controllers for Flyback and Boost Regulators Typical Operating Circuits (continued 1µ DRV SLOPE MAX17597 FB NDRV COMP ...

Page 21

... RoHS status only. Package drawings may show a different suffix character, but the drawing pertains to the package regardless of RoHS status. PACKAGE TYPE 16 TQFN Maxim Integrated MAX17595/MAX17596/MAX17597 Peak-Current-Mode Controllers for Flyback and Boost Regulators ...

Page 22

... Maxim Integrated cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim Integrated product. No circuit patent licenses are implied. Maxim Integrated reserves the right to change the circuitry and specifications without notice at any time. The parametric values (min and max limits) shown in the Electrical Characteristics table are guaranteed ...

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