IPM6220
TM
PRELIMINARY
Data Sheet
July 2000
File Number
4903
Multi-Output System Electronics
Regulator for Mobile PCs
The IPM6220 provides the power control and protection 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 regulate the system main +5V and
+3.3V voltages with synchronous-rectified buck converters.
Synchronous rectification and hysteretic operation at light
loads contributes to a high efficiency over a wide range of load
variation. Efficiency is even further enhanced by using FETs
r
DS(ON)
as a current sense resistor. Feed-forward ramp
modulation, current mode control scheme, internal feed-back
compensation provide fast and firm transients handling when
powering advanced CPUs and chip sets.
The third PWM controller regulates output voltage of +12V
boost converter.
Two linear regulators provide +5-ALWAYS and +3.3-ALWAYS
low current outputs required by the notebook system controller.
The IPM6220 monitors all the output voltages. A single Power-
Good signal is issued when soft start is completed and all
outpovervoltage protection latches the chip off to prevent output
voltages from going above 115% of their settings. Undervoltage
protection latches the chip off when any of the output drops
below 75% of its setting value after soft-start sequence is
completed. The PWM controller鈥檚 over-current circuitry monitor
the output currents by sensing the voltage drop across the
lower MOSFETs. If precision current-sensing is required, an
external current-sense resistors may optionally be used.
Features
鈥?Provides Five Regulated Voltages
- +5V-ALWAYS
- +3.3V-ALWAYS
- +5V-MAIN
- +3.3V-MAIN
- +12V
鈥?High Ef鏗乧iency Over Wide Load Range
- Synchronous Buck Converters on Main Outputs
- Hysteretic Operation at Light Load
鈥?No Current-Sense Resistor Required
- Uses MOSFET鈥檚 r
DS(ON)
- Optional Current-Sense Resistor for Precision
Overcurrent
鈥?Operates Directly From Battery 5.6V to 24V Input
鈥?Input Undervoltage Lock-Out (UVLO)
鈥?Excellent Dynamic Response
- Combined Voltage Feed-Forward and Current Mode
Control
鈥?Power-Good Output Voltages Monitor
鈥?Out of Phase Clock Generator
鈥?Separate Shutdown Pins for Advanced Con鏗乬uration
Power Interface (ACPI) Compliance
鈥?300kHz Fixed Switching Frequency
鈥?Thermal Shutdown
[ /Title
(IPM6
220)
/Subjec
t
(Multi-
Output
System
Electro
nics
Regula
tor for
Mobile
PCs)
/Autho
r ()
/Keyw
ords
(Intersi
l
Corpor
ation,
semico
nducto
r,
Multi-
Output
System
Electro
nics
Regula
tor for
Mobile
PCs)
/Creato
r ()
/DOCI
NFO
Applications
鈥?Mobile PCs
鈥?Hand-Held Portable Instruments
Pinout
IPM6220 (SSOP)
TOP VIEW
VBATT 1
3.3V-ALWAYS 2
BOOT2 3
UGATE2 4
PHASE2 5
5V-ALWAYS 6
LGATE2 7
PGND2 8
ISEN2 9
VSEN2 10
SDWN2 11
PGOOD 12
24 BOOT1
23 UGATE1
22 PHASE1
21 ISEN1
20 LGATE1
19 PGND1
18 VSEN1
17 SDWN1
16 GATE3
15 VSEN3
14 GND
13 SDWNALL
Related Literature
鈥?Technical Brief TB363 鈥淕uidelines for Handling and
Processing Moisture Sensitive Surface Mount Devices
(SMDs)鈥?/div>
Ordering Information
PART NUMBER
IPM6220CB
TEMP. (
o
C)
0 to 70
PACKAGE
24 Ld SSOP
PKG. NO.
M24.15-P
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 321-724-7143
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Copyright
漏
Intersil Corporation 2000
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