HIP6018
Data Sheet
April 1998
File Number
4497.1
Advanced PWM and Dual Linear Power
Control
The HIP6018 provides the power control and protection for
three output voltages in high-performance microprocessor
and computer applications. The IC integrates a PWM
controllers, 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 HIP6018 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 1.8V
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 2.5V±2.5%. The linear controller drives an
external N-channel MOSFET to provide 1.5V±2.5%.
The HIP6018 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.
Features
• Provides 3 Regulated Voltages
- Microprocessor Core, Clock and GTL Power
• Drives N-Channel MOSFETs
• Operates from +3.3V, +5V and +12V Inputs
• Simple Single-Loop PWM Control Design
- Voltage-Mode Control
• Fast Transient Response
- High-Bandwidth Error Amplifier
- Full 0% to 100% Duty Ratios
• 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 . . . . . . . . . . . . . . . . . . . 1.8V
DC
to 3.5V
DC
- 0.1V Steps . . . . . . . . . . . . . . . . . . . . 2.1V
DC
to 3.5V
DC
- 0.05V Steps . . . . . . . . . . . . . . . . . . 1.8V
DC
to 2.05V
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 over 1MHz
Ordering Information
PART NUMBER
HIP6018CB
HIP6018EVAL1
TEMP. RANGE
(
o
C)
0 to 70
Evaluation Board
PACKAGE
24 Ld SOIC
PKG.
NO.
M24.3
Applications
• Full Motherboard Power Regulation for Computers
• Low-Voltage Distributed Power Supplies
Pinout
HIP6018 (SOIC)
TOP VIEW
VCC 1
VID4 2
VID3 3
VID2 4
VID1 5
VID0 6
PGOOD 7
FAULT 8
SS 9
RT 10
FB2 11
VIN2 12
24 UGATE1
23 PHASE1
22 LGATE1
21 PGND
20 OCSET1
19 VSEN1
18 FB1
17 COMP1
16 FB3
15 DRIVE3
14 GND
13 VOUT2
2-224
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
HIP6018
Absolute Maximum Ratings
Supply Voltage, V
CC
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +15V
PGOOD, RT, FAULT, and GATE Voltage .GND - 0.3V to V
CC
+ 0.3V
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
SOIC Package (with 3 in
2
of copper) . . . . . . . . . . .
65
Maximum Junction Temperature (Plastic Package) . . . . . . . .150
o
C
Maximum Storage Temperature Range . . . . . . . . . . -65
o
C to 150
o
C
Maximum Lead Temperature (Soldering 10s) . . . . . . . . . . . . .300
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
UGATE1, DRIVE3, LGATE1, and VOUT2 Open
-
10
-
mA
V
OCSET
= 4.5V
V
OCSET
= 4.5V
8.6
8.2
2.45
-
-
-
-
2.55
500
1.25
10.4
10.2
2.65
-
-
V
V
V
mV
V
Rising VIN2 Under-Voltage Threshold
VIN2 Under-Voltage Hysteresis
Rising V
OCSET1
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
Reference Voltage (Pin FB2 and FB3)
LINEAR REGULATOR
Regulation
Under-Voltage Level
Under-Voltage Hysteresis
Over-Current Protection
Over-current Protection During Start-Up
LINEAR CONTROLLER
Regulation
Under-Voltage Level
FB3
UV
VSEN3 = DRIVE3, 0 < I
DRIVE3
< 20mA
FB3 Rising
FB2
UV
10mA < I
VOUT2
< 150mA
FB2 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
1.240
-
-
-
1.265
0.8
-
+1.0
1.290
V
V
%
V
-2.5
-
-
180
560
-
75
6
230
700
2.5
87
-
-
-
%
%
%
mA
mA
-2.5
-
-
75
2.5
87
%
%
2-227
HIP6018
Electrical Specifications
PARAMETER
Under-Voltage Hysteresis
DRIVE3 Source Current
PWM CONTROLLER ERROR AMPLIFIER
DC Gain
Gain-Bandwidth Product
Slew Rate
PWM CONTROLLER GATE DRIVER
Upper Drive Source
Upper Drive Sink
Lower Drive Source
Lower Drive Sink
PROTECTION
V
OUT1
Over-Voltage Trip
FAULT Sourcing Current
OCSET1 Current Source
Soft-Start Current
Chip Shutdown Soft-Start Threshold
POWER GOOD
V
OUT1
Upper Threshold
V
OUT1
Under Voltage
V
OUT1
Hysteresis (VSEN1 / DACOUT)
PGOOD Voltage Low
V
PGOOD
VSEN1 Rising
VSEN1 Rising
Upper/Lower Threshold
I
PGOOD
= -4mA
108
92
-
-
-
-
2
-
110
94
-
0.5
%
%
%
V
I
OVP
I
OCSET
I
SS
VSEN1 Rising
V
FAULT
= 10V
V
OCSET
= 4.5V
DC
112
10
170
-
-
115
14
200
11
-
118
-
230
-
1.0
%
mA
µA
µA
V
I
UGATE
R
UGATE
I
LGATE
R
LGATE
VCC = 12V, V
UGATE1
(or V
GATE2
) = 6V
V
UGATE1-PHASE1
= 1V
VCC = 12V, V
LGATE1
= 1V
V
LGATE1
= 1V
-
-
-
-
1
1.7
1
1.4
-
3.5
-
3.0
A
Ω
A
Ω
GBWP
SR
COMP = 10pF
-
-
-
88
15
6
-
-
-
dB
MHz
V/µs
VIN2 - DRIVE3 > 0.6V
Recommended Operating Conditions, Unless Otherwise Noted. Refer to Figures 1, 2 and 3
(Continued)
SYMBOL
TEST CONDITIONS
MIN
-
20
TYP
6
40
MAX
-
-
UNITS
%
mA
Typical Performance Curves
100
C
UGATE1
= C
LGATE1
= C
GATE
V
VCC
= 12V, V
IN
= 5V
1000
RESISTANCE (kΩ)
80
R
T
PULLUP
TO +12V
I
CC
(mA)
60
C
GATE
= 3600pF
40
C
GATE
= 1500pF
R
T
PULLDOWN TO V
SS
20
C
GATE
= 660pF
0
100
C
GATE
= 4800pF
100
10
10
100
SWITCHING FREQUENCY (kHz)
1000
200
300
400
500
600
700
800
900
1000
SWITCHING FREQUENCY (kHz)
FIGURE 4. R
T
RESISTANCE vs FREQUENCY
FIGURE 5. BIAS SUPPLY CURRENT vs FREQUENCY
2-228
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