4

Application Information

The HIP1020 was designed specifically to address the

requirements of Device Bay peripherals. The small package,

low cost and integrated features make it the ideal component

for high-side power control of all three Device-Bay rail

voltages without using any additional components except for

the switching MOSFETs themselves. The integrated charge

pump supplies sufficient voltage to fully enhance the lower-

cost N-Channel power MOSFETs, and the internally-

controlled turn-on ramp provides soft switching for all types

of loads.

Although the HIP1020 was developed with Device Bay in

mind, it has the versatility to perform in any situation where

low-cost load switching is required.

MOSFET Selection for Device Bay Peripherals

When selecting power MOSFETs for Device Bay (or any

similar application), two major concerns are the voltage drop

across the MOSFET and the thermal requirements imposed

by the particular application. Voltage drop across the

and the peak current through the device, while the thermal

requirements are determined by several factors including

ambient temperature, amount of air flow if any, area of the

copper mounting pad, the thermal characteristics of the

MOSFET and its package, and the average current through

the MOSFET.

Typical Performance Curves

FIGURE 2. HGATE (PIN 4) TURNING ON WITH VCC = 12V

FIGURE 3. LGATE (PIN 3) TURNING ON WITH VCC = 12V

FIGURE 4. HGATE (PIN 4) TURNING ON WITH VCC = 5V

FIGURE 5. LGATE (PIN 3)TURNING ON WITH VCC = 5V

NOTES: Device is enabled at 10 milliseconds.

2. Pins 3 and 4 are unconnected.

3. Pins 3 and 4 are connected to the gates of “typical” high-performance N-Channel MOSFETs.

0

-5

5

10

15

20

25

010

30

40

50

20

MILLISECONDS

22nF

NOTE 3

NOTE 2

C1 = 22nF

C1 = 10nF

0

-5

5

10

15

20

25

010

30

40

50

20

MILLISECONDS

NOTE 3

NOTE 2

C1 = 22nF

C1 = 10nF

-5

0

5

10

15

0

10

304050

20

MILLISECONDS

NOTE 3

NOTE 2

C1 = 22nF

C1 = 10nF

0

10

20304050

-5

0

5

10

15

MILLISECONDS

NOTE 3

NOTE 2

C1 = 22nF

C1 = 10nF

HIP1020