MAXM17536 datasheet(19/22 Pages) MAXIM

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Component Selection Table

Table 1. Selection Component Values

Power Dissipation

The power dissipation inside the module leads to increase

in the junction temperature of the MAXM17536. The

power loss inside the module at full load can be estimated

as follows:

OUT

LOSS

OUT

1000 V

45.15 21.67

(1 0.0043 T )



−−



η×







××

−









where:

POUT = Total output power

VOUT = Output voltage

VIN = Input voltage

η is the efficiency of the power module at the desired

operating conditions. See the Typical Operating

Characteristics for the power-conversion efficiency or

measure the efficiency to determine the total power

dissipation. The junction temperature (TJ) of the module

can be estimated at any given maximum ambient

temperature (TA) from the following equation:

TJ = TA + (θJA x PLOSS)

For the MAXM17536 evaluation board, the thermal

resistance from junction-to-ambient (θJA) is 24°C/W.

Operating the module at junction temperatures greater

than +125°C degrades operating lifetimes. An EE-SIM

model is available for the MAXM17536 to simulate

efficiency and power loss for the desired operating condi-

tions.

VIN

(V)

VOUT

(V)

CIN

COUT

(kΩ)

fSW

(kHz)

RRT

(kΩ)

4.5 to 16

0.9

4 x 4.7µF, 1206, X7R, 50V

12 x 47μF, 1210, X7R, 10V

33.2

Open

300

61.9

4.5 to 17

1.2

4 x 4.7µF, 1206, X7R, 50V

9 x 47μF, 1210, X7R, 10V

39.2

118

400

45.3

4.5 to 21

1.5

4 x 4.7µF, 1206, X7R, 50V

7 x 47μF, 1210, X7R, 10V

52.3

78.7

400

45.3

4.5 to 26

1.8

4 x 4.7µF, 1206, X7R, 50V

5 x 47μF, 1210, X7R, 10V

71.5

400

45.3

4.5 to 35

2.5

4 x 4.7µF, 1206, X7R, 50V

5 x 47μF, 1210, X7R, 10V

57.6

32.4

400

45.3

4.5 to 60

3.3

4 x 4.7µF, 1206, X7R, 100V

4 x 47μF, 1210, X7R, 10V

121

45.3

300

61.9

7 to 60

4 x 4.7µF, 1206, X7R, 100V

3 x 22μF, 1210, X7R, 25V

174

38.3

450

Open

11 to 60

4 x 4.7µF, 1206, X7R, 100V

3 x 22μF, 1210, X7R, 25V

294

37.4

750

16 to 60

4 x 4.7µF, 1206, X7R, 100V

3 x 22μF, 1210, X7R, 25V

340

27.4

900

19.6

Figure 1. Setting the Input-Undervoltage Lockout

Figure 2. Setting the Output Voltage

EN/UVLO

SGND

MAXM17536

SGND

MAXM17536

VOUT

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MAXM17536

4.5V to 60V, 4A High-Efficiency, DC-DC Step-Down

SiP Power Module with Integrated Inductor

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