ipm6210a Intersil Corporation, ipm6210a Datasheet

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ipm6210a

Manufacturer Part Number
ipm6210a
Description
Precision Dual Pwm Controller And Linear Regulator For Notebook Cpus
Manufacturer
Intersil Corporation
Datasheet

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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
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
IPM6210ACA
IPM6210ACA-T
PART NUMBER
DC
to 2.0V
DC
TEMP. (
-10 to 85
-10 to 85
and conforms to the Intel Mobile VID
o
TM
C)
1
28 Ld SSOP
28 Ld SSOP,
Tape and Reel
PACKAGE
Data Sheet
M28.15
M28.15
PKG. NO.
SpeedStep™ is a trademark of Intel Corporation.
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 321-724-7143
Features
• Provides 3 Regulated Voltages
• High Efficiency Over Wide Load Range
• Not Dissipative Current-Sense Scheme
• Adaptive Dead-Time Drivers for N-Channel MOSFETs
• Operates from +5V, +3.3V and Battery (5.6-24V) Inputs
• Precision Core Voltage Control:
• TTL-Compatible 5-Bit Digital Output Voltage Selection
• Power-Good Output Voltage Monitor
• No Negative Voltage on Outputs at Turn-Off
• Overvoltage, Undervoltage and Overcurrent Fault
• 300kHz Fixed Switching Frequency
• Thermal Shutdown
Applications
• Mobile PCs
• Web Tablets
• Internet Appliances
- 0.9V to 2.0V Microprocessor Core (SpeedStep
- 1.5V Microprocessor I/O
- 2.5V Microprocessor Clock Generator
- Uses MOSFET’s r
- Optional Current-Sense Resistor for Precision
- Remote “Kelvin” Sensing
- Summing Current-Mode Control
- On-Chip Mode-Compensated “Droop” for Optimum
- Wide Range - 0.925V
- Programmable “On-the-Fly” VID Code Change with
Monitors
Enabled)
Overcurrent
Transient Response and Lower Processor Power
Dissipation
from 1.3V
Customer Programmable Slew Rate and 100µs Settling
Time
August 2001
DC
|
to 2.0V
Copyright © Intersil Americas Inc. 2001, All Rights Reserved
|
Intersil and Design is a trademark of Intersil Americas Inc.
DS(ON)
DC
DC
in 50mV Steps
to 1.3V
File Number
DC
IPM6210A
in 25mV Steps, and
9033.1
TM

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ipm6210a Summary of contents

Page 1

... Data Sheet 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 ...

Page 2

... Pinout Simplified Power System Diagram + OUT2 I 3.3V V OUT3 CPU CLK 2 IPM6210A IPM6210A (SSOP) TOP VIEW LGATE2 1 28 VCC PGND2 2 27 LGATE1 BOOT2 3 26 PGND1 UGATE2 4 25 BOOT1 PHASE2 5 24 UGATE1 ISEN2 6 23 PHASE1 VID4 7 22 ISEN1 VID3 8 21 PGOOD VID2 ...

Page 3

... ENABLE Enable Voltage Low Enable Voltage High PWM 1 CONVERTER Output Voltage Static Load Regulation 3 IPM6210A Thermal Information Thermal Resistance (Typical, Note 1) SSOP Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . Maximum Junction Temperature (Plastic Package 150 Maximum Storage Temperature Range . . . . . . . . . . -65 Maximum Lead Temperature (Soldering 10s 300 (SSOP - Lead Tips Only) +0 ...

Page 4

... OUT2 V Lower Threshold OUT2 V Upper Threshold OUT3 V Lower Threshold OUT3 PGOOD Voltage Low PGOOD Leakage Current 4 IPM6210A SYMBOL TEST CONDITIONS V Percent of the voltage set by VID code. UV1 Disabled during dynamic VID code change. T DOC1 Percent of the voltage set by VID code. V OVP1 T ...

Page 5

... IPM6210A + DACOUT + + + + - + + + - + + ...

Page 6

... Description Operation Overview The IPM6210A three-in-one power management integrated circuit provides complete power solution for modern processors for notebook and sub-notebook PCs. The IC controls operation of two synchronous buck converters and one linear regulator ...

Page 7

... VID set voltage. Initialization The IPM6210A initializes upon receipt of input power assuming EN is high or not connected. The Power-On Reset (POR) function continually monitors the input supply voltage on the VCC pin and initiates soft-start operation after input supply voltage exceeds 4 ...

Page 8

... NOTE Connected to GND open or connected to 3.3V SS through pull-up resistors. 8 IPM6210A Mode-Compensated Droop An output voltage ‘droop’ active voltage positioning is NOMINAL now widely used in the computer power applications. The OUT1 VID0 VOLTAGE technique is based on raising the converter voltage at light load in anticipation of the possible load current step ...

Page 9

... CPU 2 Ch1 50mV Ch2 5.0A FIGURE 4. The IPM6210A incorporates a new proprietary droop technique specially designed for the SpeedStep converters and provides mode-compensated, relatively equal droop in both, the performance and the battery- optimized modes. The droop is set as a fraction of the VID programmed voltage and the gain in the current loop is different for each VID combination ...

Page 10

... When the low level on the comparator output is detected eight times in a row, the mode control flip- flop is set and converter is commanded to operate in the 10 IPM6210A hysteretic mode. If during this pulse counting process the C2 comparator's output happens to be high, the counter of the ...

Page 11

... Both PWM controllers use the lower MOSFET’s on-resistance - r to monitor the current for protection DS(ON) against shorted outputs. The sensed voltage drop after amplification is compared with an internally set threshold. 11 IPM6210A Several scenarios of the current protection circuit behavior are possible ...

Page 12

... The minimum practical output inductor value is the one that keeps inductor current just on the boundary of continuous conduction at some minimum load. The industry standard practice is to choose the minimum current somewhere from 10% to 25% of the nominal current. At light load, IPM6210A is PWM controllers automatically switch to a hysteretic mode either operation to sustain high efficiency ...

Page 13

... MOSFET turns on. Also, important is to verify that the lower MOSFET gate voltage does not reach threshold when high dV/dt transition occurs on the phase node. To minimize this effect, IPM6210A has a low, 0.8Ω typical, low side driver pull-down resistance. Requirements to the upper MOSFET r ...

Page 14

... IPM6210A DC-DC Converter Application Circuit Figure 12 shows an application circuit of a power supply for a notebook PC microprocessor system. The power supply provides the microprocessor core voltage (V voltage (V ) and the clock generator voltage (V I/O +5.6-24V , +5V and +3. + +5.6V-24. GND 56µF CR1 BAT54WT1 C2 Q1 0.22µF HUF76112SK8 ...

Page 15

... Intersil Corporation 7585 Irvine Center Drive 2401 Palm Bay Rd. Suite 100 Palm Bay, FL 32905 Irvine, CA 92618 TEL: (321) 724-7000 TEL: (949) 341-7000 FAX: (321) 724-7946 FAX: (949) 341-7123 15 IPM6210A M28.15 28 LEAD SHRINK NARROW BODY SMALL OUTLINE PLASTIC PACKAGE GAUGE PLANE SYMBOL A ...

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