IPM6210A Datasheet, PDF (1/15 Pages) Intersil Corporation – Precision Dual PWM Controller And Linear Regulator for Notebook CPUs

TM
Data Sheet
IPM6210A
August 2001
File Number 9033.1
Precision Dual PWM Controller And
Linear Regulator for Notebook CPUs
The IPM6210A is a highly integrated power controller which
provides a complete power management solution for mobile
CPUs. The IC integrates two PWM controllers and a linear
regulator as well as monitoring and protection circuitry into a
single 28-lead plastic SSOP package. The two PWM
controllers regulate the microprocessor core and I/O
voltages with synchronous-rectified buck converters, while
the linear regulator powers the CPU clock.
The IPM6210A includes 5-bit digital-to-analog converter
(DAC) that adjusts the core PWM output voltage from
0.925V_DC to 2.0V_DC and conforms to the Intel Mobile VID
specification. The DAC setting may be changed during
operation to accommodate Dual-Mode processors. Special
measures are taken to provide such a transition with
controlled rate in a specified 100µs. A precision reference,
remote sensing, and a proprietary architecture with
integrated processor mode-compensated “droop” provide
excellent static and dynamic core voltage regulation. The
second PWM controller has a fixed 1.5V output voltage and
powers the I/O circuitry. Both PWM controllers have
integrated feedback loop compensation that dramatically
reduces number of the external components. At nominal
loads PWM controllers operate at a fixed frequency of
300kHz. At light loads when the filter inductor current
becomes discontinuous, controllers operate in a hysteretic
mode. Out-of-phase operation of two PWM controllers to
reduce input current ripple is provide in both modes of
operation. The linear regulator uses an internal pass device
to provide 2.5V for the CPU clock generator.
The IPM6210A monitors all the output voltages. A single
Power-Good signal is issued when soft start is completed
and all outputs are within ±10% of their respective set points.
A built-in overvoltage protection for the core and I/O outputs
forces the lower MOSFETs on to prevent output voltages
from going above 115% of their settings. Undervoltage
protection latches the chip off when any of three outputs
drops below 75% of the set value. The PWM controller's
overcurrent circuitry monitors the output current by sensing
the voltage drop across the lower MOSFETs. If precision
overcurrent protection is required, an external current-sense
resistor may optionally be used.
Ordering Information
PART NUMBER TEMP. (^oC)
PACKAGE
IPM6210ACA
-10 to 85 28 Ld SSOP
IPM6210ACA-T
-10 to 85 28 Ld SSOP,
Tape and Reel
PKG. NO.
M28.15
M28.15
Features
• Provides 3 Regulated Voltages
- 0.9V to 2.0V Microprocessor Core (SpeedStep^TM
Enabled)
- 1.5V Microprocessor I/O
- 2.5V Microprocessor Clock Generator
• High Efficiency Over Wide Load Range
• Not Dissipative Current-Sense Scheme
- Uses MOSFET’s r_DS(ON)
- Optional Current-Sense Resistor for Precision
Overcurrent
• Adaptive Dead-Time Drivers for N-Channel MOSFETs
• Operates from +5V, +3.3V and Battery (5.6-24V) Inputs
• Precision Core Voltage Control:
- Remote “Kelvin” Sensing
- Summing Current-Mode Control
- On-Chip Mode-Compensated “Droop” for Optimum
Transient Response and Lower Processor Power
Dissipation
• TTL-Compatible 5-Bit Digital Output Voltage Selection
- Wide Range - 0.925V_DC to 1.3V_DC in 25mV Steps, and
from 1.3V_DC to 2.0V_DC in 50mV Steps
- Programmable “On-the-Fly” VID Code Change with
Customer Programmable Slew Rate and 100µs Settling
Time
• Power-Good Output Voltage Monitor
• No Negative Voltage on Outputs at Turn-Off
• Overvoltage, Undervoltage and Overcurrent Fault
Monitors
• 300kHz Fixed Switching Frequency
• Thermal Shutdown
Applications
• Mobile PCs
• _{Web Tablets}
• _{Internet Appliances}
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 321-724-7143 | Intersil and Design is a trademark of Intersil Americas Inc.
SpeedStep™ is a trademark of Intel Corporation. | Copyright © Intersil Americas Inc. 2001, All Rights Reserved