MAXM17536EVKIT datasheet(3/11 Pages) MAXIM

3 / 11 page

Maxim Integrated │ 3

www.maximintegrated.com

Evaluates: MAXM17536 5V Output

MAXM17536 5V Output

Evaluation Kit

EXTVCC Linear Regulator

Powering VCC of the IC from EXTVCC increases

the efficiency of the power converter at higher input

voltages. If the applied EXTVCC voltage is greater than

4.7V (typ), VCC is powered from EXTVCC. If EXTVCC is

lower than 4.7V (typ), VCC is powered from VIN. Refer to

the MAXM17536 module data sheet for further information.

To connect EXTVCC to VOUT place the shunt across

pins 2-3 of jumper J3. Refer to Table 3 for summary of

EXTVCC jumper configurations.

Electro-Magnetic 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.

Use of EMI filter components, as shown in the EV kit

schematic, results in lower conducted emissions below

CISPR22 Class B limits. The MAXM17536EVKIT# PCB

layout is also designed to limit radiated emissions from

switching nodes of the power converter resulting in radiated

emissions below CISPR22 Class B limits. Further, capacitors

150pF/100V and 0.1μF/100V placed near the input of the

board helps in attenuating high-frequency noise.

Hot-Plug-In and Long Input Cables

The MAXM17536EVKIT# PCB provides an electrolytic

capacitor (C24, 47μF/80V) to dampen input voltage peaks

and oscillations that can arise during hot-plug-in and/or

due to long input cables. This capacitor limits the peak

voltage at the input of the MAXM17536 power module,

when the EV kit is powered directly from a precharged

capacitive source or an industrial backplane PCB. Long

input cables, between input power source and the EV

kit circuit can cause input-voltage oscillations due to the

inductance of the cables. The equivalent series resistance

(ESR) of the electrolytic capacitor helps damp out the

oscillations caused by long input cables.

Table 3. EXTVCC Configuration (J3)

*Default position

SHUNT POSITION

EXTVCC PIN

EXTVCC FUNCTION

Not installed

Unconnected

VCC Powered by VIN

1-2

Connected to GND

VCC Powered by VIN

2-3*

Connected to VOUT

MAXM17536EVKIT Datasheet(PDF) 3 Page - Maxim Integrated Products

MAXM17536EVKIT Datasheet(HTML) 3 Page - Maxim Integrated Products

Html Pages

1 2 3 4 5 6 7 8 9 10 11

Datasheet Download

Link URL