MAX17577 datasheet(4/14 Pages) MAXIM

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Evaluate: MAX17577 and MAX17578

in -12V and -5V Output-Voltage

Applications

MAX17577EVKIT#, MAX17578EVKIT#

Evaluation Kits

Inductive Output Short-Circuit Protection

The MAX17577EVKIT# and MAX17578EVKIT# PCB

layouts provide footprints for optional R-D circuits (R107

and D101, R207 and D201) that are used for Inductive

Output Short-Circuit Protection. For more details, refer to

the MAX17577, MAX17578 IC data sheet.

Electromagnetic Interference (EMI)

Compliance to conducted emissions (CE) standards

requires an EMI filter at the input of a switching power

converter. The EMI filter attenuates high-frequency cur-

rents drawn by the switching power converter, and limits

the noise injected back into the input power source.

The MAX17577EVKIT# and MAX17578EVKIT# PCBs

have designated footprints for the placement of con-

ducted EMI filter components as per the optional Bill of

Material (BoM). Use of these filter components results in

lower conducted EMI, below CISPR32 Class B limits. Cut

open the trace at L102 and L202 before installing EMI

filter components. The PCB layouts are also designed

to limit radiated emissions from switching nodes of the

power converter, resulting in radiated emissions below

CISPR32 Class B limits.

(VIN1 = VIN2 = 24V, fSW1 = fSW2 = 600kHz, unless otherwise noted.)

MAX17577EVKIT# and MAX17578EVKIT# EV Kit Performance Reports

100

0.0

0.2

0.4

0.6

0.8

LOAD CURRENT (A)

MAX17577

EFFICIENCY VS. LOAD CURRENT

VOUT1 = -12V

VIN = 48V

VIN = 36V

VIN = 24V

VIN = 16V

TOC01

-5.10

-5.05

-5.00

-4.95

-4.90

0.0

0.2

0.4

0.6

0.8

1.0

LOAD CURRENT (A)

MAX17578

LOAD AND LINE REGULATION

VOUT2 = -5V

VIN = 36V

VIN = 24V

VIN = 16V

VIN = 48V

TOC04

VIN = 55V

-12.15

-12.10

-12.05

-12.00

-11.95

0.0

0.2

0.4

0.6

0.8

LOAD CURRENT (A)

MAX17577

LOAD AND LINE REGULATION

VOUT1 = -12V

VIN = 36V

VIN = 24V

VIN = 16V

VIN = 48V

TOC02

200mV/div

200µs/div

MAX17577

LOAD TRANSIENT BETWEEN 0 AND 0.4A

VOUT1 = -12V

TOC05

VOUT(AC)

IOUT

200mA/div

100

0.01

0.10

1.00

LOAD CURRENT (A)

MAX17578

EFFICIENCY VS. LOAD CURRENT

VOUT2 = -5V

VIN = 48V

VIN = 36V

VIN = 24V

VIN = 16V

TOC03

VIN = 55V

200mV/div

200µs/div

MAX17577

LOAD TRANSIENT BETWEEN 0.4A AND 0.8A

VOUT1 = -12V

TOC06

VOUT(AC)

IOUT

500mA/div

0.8A

0.4A

MAX17577 Datasheet(PDF) 4 Page - Maxim Integrated Products

MAX17577 Datasheet(HTML) 4 Page - Maxim Integrated Products

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