FN4903 Rev.1.00

Page 1 of 14

Dec 2000

FN4903

Rev.1.00

Dec 2000

IPM6220

Advanced Triple PWM and Dual Linear Power Controller for Portable Applications

DATASHEET

The IPM6220 provides a highly integrated power control and

protection solution for five output voltages required in high-

performance notebook PC applications. The IC integrates

three fixed frequency pulse-width-modulation (PWM)

controllers and two linear regulators along with monitoring and

protection circuitry into a single 24 lead SSOP package.

The two PWM controllers that regulate the system main 5V

and 3.3V voltages are implemented with synchronous-

rectified buck converters. Synchronous rectification and

hysteretic operation at light loads contribute to high efficiency

over a wide range of input voltage and load variation.

Efficiency is further enhanced by using the lower MOSFET’s

rDS(ON) as the current sense element. Input voltage feed-

forward ramp modulation, current-mode control, and internal

feed-back compensation provide fast and stable handling of

input voltage load transients encountered in advanced

portable computer chip sets.

The third PWM controller is a boost converter that regulates a

resistor selectable output voltage of nominally 12V.

Two internal linear regulators provide +5V ALWAYS and

+3.3V ALWAYS low current outputs required by the notebook

system controller.

Pinout

IPM6220 (SSOP)

TOP VIEW

Features

• Provides Five Regulated Voltages

-+5V ALWAYS

- +3.3V ALWAYS

-+5V Main

- +3.3V Main

-+12V

• High Efficiency Over Wide Line and Load Range

- Synchronous Buck Converters on Main Outputs

- Hysteretic Operation at Light Load

• No Current-Sense Resistor Required

- Uses MOSFET’s rDS(ON)

- Optional Current-Sense Resistor for More Precision

• Operates Directly From Battery 5.6 to 22V Input

• Input Undervoltage Lock-Out (UVLO)

• Excellent Dynamic Response

- Voltage Feed-Forward and Current-Mode Control

• Monitors Output Voltages

• Synchronous Converters Operate Out of Phase

• Separate Shut-Down Pins for Advanced Configuration and

Power Interface (ACPI) Compatibility

• 300kHz Fixed Switching Frequency on Main Outputs

• Thermal Shut-Down Protection

Applications

• Mobile PCs

• Hand-Held Portable Instruments

Related Literature

• Application Note AN9915

Ordering Information

PART NUMBER

TEMP.

RANGE (oC)

PACKAGE

PKG.

NO.

IPM6220CA

0 to 70

24 Ld SSOP

M24.15

IPM6220EVAL1

Evaluation Board

VBATT

3.3V ALWAYS

BOOT2

UGATE2

VSEN2

SDWN2

PGOOD

BOOT1

LGATE1

ISEN1

PHASE1

GND

GATE3

SDWNALL

UGATE1

24

23

22

21

20

19

18

17

16

15

14

13

1

2

3

4

5

6

7

8

9

10

11

12

PGND2

PHASE2

ISEN2

VSEN1

VSEN3

5V ALWAYS

LGATE2

PGND1

SDWN1

NOT RECOMM

ENDED FOR N

EW DESIGNS

RECOMMEND

ED REPLACEM

ENT

ISL6232 (Availa

ble Feb. 2004)