HIP6028
Data Sheet
May 1998
File Number
4630
Advanced PWM and Dual Linear Power
Control with Integrated ACPI Support
Interface
The HIP6028 provides the power control and protection for
three output voltages in high-performance microprocessor
and computer applications. The IC integrates a PWM
controller, a linear regulator and a linear controller as well as
the monitoring and protection functions into a single
package. The PWM controller regulates the microprocessor
core voltage with a synchronous-rectified buck converter.
The linear controller regulates power for the GTL bus and
the linear regulator provides power for the clock driver circuit.
The HIP6028 includes an Intel-compatible, TTL 5-input
digital-to-analog converter (DAC) that adjusts the core PWM
output voltage from 2.1V
DC
to 3.5V
DC
in 0.1V increments
and from 1.3V
DC
to 2.05V
DC
in 0.05V steps. The precision
reference and voltage-mode control provide
±1%
static
regulation. The linear regulator uses an internal pass device
to provide a fixed 2.5V
±2.5%.
The linear controller drives an
external N-channel MOSFET to provide a fixed 1.5V
±2.5%.
The HIP6028 monitors all the output voltages. A single
Power Good signal is issued when the core is within
±10%
of
the DAC setting and the other levels are above their under-
voltage levels. Additional built-in over-voltage protection for
the core output uses the lower MOSFET to prevent output
voltages above 115% of the DAC setting. The PWM over-
current function monitors the output current by using the
voltage drop across the upper MOSFET’s r
DS(ON)
,
eliminating the need for a current sensing resistor.
The HIP6028 offers integrated ACPI S3 shutdown state
support. Through the SD1&3 pin, the microprocessor core
and GTL bus supplies can be shut down when entering
power-saving standby operation mode.
Features
• Provides 3 Regulated Voltages
- Microprocessor Core, Clock and GTL Power
• Integrated ACPI S3-State Shutdown Support
• Drives Low Cost Transistors
- PWM Controller Drives N-MOSFETs
- Linear Controller Compatible with Both MOSFETs and
NPN Bipolar Transistors
• Operates from +3.3V, +5V and +12V Inputs
• Simple Control Design
- Single-Loop Voltage-Mode PWM Control
- Fixed 1.5V GTL Output Voltage
- Fixed 2.5V Clock Output Voltage
• Fast Transient Response
- High-Bandwidth Error Amplifier
- Full 0% to 100% Duty Ratio
• Excellent Output Voltage Regulation
- Core PWM Output:
±1%
Over Temperature
- Other Outputs:
±2.5%
Over Temperature
• TTL-compatible 5-Bit Digital-to-Analog Core Output
Voltage Selection
- Wide Range . . . . . . . . . . . . . . . . . . . 1.3V
DC
to 3.5V
DC
• Power-Good Output Voltage Monitor
• Microprocessor Core Voltage Protection Against Shorted
MOSFET
• Over-Voltage and Over-Current Fault Monitors
- Does Not Require Extra Current Sensing Element,
Uses MOSFET’s r
DS(ON)
• Small Converter Size
- Constant Frequency Operation; 200kHz Free-Running
Oscillator; Programmable from 50kHz to 1MHz
Applications
• Full Motherboard Power Regulation for Computers
• Low-Voltage Distributed Power Supplies
Ordering Information
PART NUMBER
HIP6028CB
HIP6028EVAL1
TEMP.
RANGE
(
o
C)
0 to 70
PACKAGE
24 Ld SOIC
PKG. NO.
M24.3
Pinout
HIP6028 (SOIC)
TOP VIEW
VCC 1
VID4 2
VID3 3
VID2 4
VID1 5
VID0 6
PGOOD 7
FAULT 8
SS 9
RT 10
SD1&3 11
VIN2 12
24 UGATE
23 PHASE
22 LGATE
21 PGND
20 OCSET
19 VSEN1
18 FB
17 COMP
16 VSEN3
15 DRIVE3
14 GND
13 VOUT2
Evaluation Board
2-311
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
http://www.intersil.com or 407-727-9207
|
Copyright
©
Intersil Corporation 1999
HIP6028
Absolute Maximum Ratings
Supply Voltage, V
CC
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +15V
PGOOD, RT, FAULT, DRIVE3,
LGATE, and UGATE Voltage . . . . . . . . . GND - 0.3V to V
CC
+ 0.3V
Other Input, Output or I/O Voltage . . . . . . . . . . . . . GND -0.3V to 7V
Thermal Information
Thermal Resistance (Typical, Note 1)
θ
JA
(
o
C/W)
SOIC Package. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
75
Maximum Junction Temperature (Plastic Package) . . . . . . . 150
o
C
Maximum Storage Temperature Range . . . . . . . . . . -65
o
C to 150
o
C
Maximum Lead Temperature (Soldering 10s) . . . . . . . . . . . . 3 00
o
C
(SOIC - Lead Tips Only)
Operating Conditions
Supply Voltage, V
CC
. . . . . . . . . . . . . . . . . . . . . . . . . . . +12V
±10%
Ambient Temperature Range . . . . . . . . . . . . . . . . . . . . 0
o
C to 70
o
C
Junction Temperature Range . . . . . . . . . . . . . . . . . . . 0
o
C to 125
o
C
CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation of the
device at these or any other conditions above those indicated in the operational sections of this specification is not implied.
NOTE:
1.
θ
JA
is measured with the component mounted on an evaluation PC board in free air.
Electrical Specifications
PARAMETER
VCC SUPPLY CURRENT
Nominal Supply
POWER-ON RESET
Rising VCC Threshold
Falling VCC Threshold
Recommended Operating Conditions, Unless Otherwise Noted. Refer to Figures 1, 2 and 3
SYMBOL
TEST CONDITIONS
MIN
TYP
MAX
UNITS
I
CC
UGATE, DRIVE3, LGATE, and VOUT2 Open
-
8
-
mA
V
OCSET
= 4.5V
V
OCSET
= 4.5V
8.6
8.2
2.45
-
-
-
-
2.55
0.5
1.25
10.4
10.2
2.65
-
-
V
V
V
V
V
Rising VIN2 Under-Voltage Threshold
VIN2 Under-Voltage Hysteresis
Rising V
OCSET
Threshold
OSCILLATOR
Free Running Frequency
Total Variation
Ramp Amplitude
REFERENCE and DAC
DAC(VID0-VID4) Input Low Voltage
DAC(VID0-VID4) Input High Voltage
DACOUT Voltage Accuracy
LINEAR REGULATOR
Regulation
Under-Voltage Level
Under-Voltage Hysteresis
Over-Current Protection (Current-Limiting)
LINEAR CONTROLLER
Regulation
Under-Voltage Level
Under-Voltage Hysteresis
DRIVE3 Source Current
PWM CONTROLLER ERROR AMPLIFIER
DC Gain
Gain-Bandwidth Product
GBWP
VSEN3 = 1.4V, DRIVE3 = 2V, VIN2 = 3.3V
VSEN3
UV
VSEN3 = DRIVE3
VSEN3 Rising
VOUT2
UV
10mA < I
VOUT2
< 150mA
VOUT2 Rising
∆V
OSC
RT = OPEN
6kΩ < RT to GND < 200kΩ
RT = Open
185
-15
-
200
-
1.9
215
+15
-
kHz
%
V
P-P
-
2.0
-1.0
-
-
-
0.8
-
+1.0
V
V
%
2.437
-
-
180
2.500
1.875
0.150
230
2.563
2.175
-
-
V
V
V
mA
1.462
-
-
20
1.500
1.125
0.090
40
1.538
1.305
-
-
V
V
V
mA
-
-
88
15
-
-
dB
MHz
2-314
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
