3

FN6504.1

May 28, 2009

Controller and Driver Recommendations

CONTROLLER

COMMENTS

ISL6336

When PSI# is asserted (LOW), the controller generates a 3-level PWM pattern on the phases that are active in PSI# mode. The

active phases in PSI# mode must use VR11.1 drivers, ISL6622, ISL6620 for diode emulation.

ISL6336A

When PSI# is asserted (LOW), the PWM pattern has only high and low states except for fault modes. The controller can be used

with any Intersil driver such as ISL6612, ISL6614, ISL6609, ISL6610. ISL6622, ISL6620 can also be used.

DRIVER

GATE DRIVE

VOLTAGE

# OF GATE

DRIVES

DIODE

EMULATION

(DE)

GATE DRIVE

OPTIMIZATION

(GVOT)

COMMENTS

ISL6622

12V

Dual Output

(Single Phase)

Yes

Yes

Use for phases that are active in PSI# mode and its

coupled channel in coupled inductor applications. Can

also be used on all channels.

ISL6620

5V

Dual Output

(Single Phase)

Yes

No

Use for phases that are active in PSI# mode and its

coupled channel in coupled inductor applications. Can

also be used on all channels.

ISL6612, ISL6612A

12V

Dual Output

(Single Phase)

No

No

Can be used with phases that are inactive in PSI# mode

or with all channels when using the ISL6336A

ISL6596

5V

Dual Output

(Single Phase)

No

No

Can be used with phases that are inactive in PSI# mode

or with all channels when using the ISL6336A

ISL6614, ISL6614A

12V

Quad Output

(Two Phase)

No

No

Can be used with phases that are inactive in PSI# mode

or with all channels when using the ISL6336A

ISL6610

5V

Quad Output

(Two Phase)

No

No

Can be used with phases that are inactive in PSI# mode

or with all channels when using the ISL6336A

NOTE: Intersil 5V and 12V drivers are mostly pin-to-pin compatible and allow dual footprint layout to optimize MOSFET selection and efficiency. Dual = One

Synchronous Channel; Quad = Two Synchronous channels.

ISL6336, ISL6336A