HIP6020A
TM
Data Sheet
September 2001
File Number
4735.2
Advanced Dual PWM and Dual Linear
Power Controller
The HIP6020A provides the power control and protection for
four output voltages in high-performance, graphics intensive
microprocessor and computer applications. The IC
integrates two PWM controllers and two linear controllers, as
well as the monitoring and protection functions into a 28-pin
SOIC package. One PWM controller regulates the
microprocessor core voltage with a synchronous-rectified
buck converter. The second PWM controller supplies the
computer system’s AGP 1.5V or 3.3V bus power with a
standard buck converter. The linear controllers regulate
power for the 1.5V GTL bus and the 1.8V power for the
North/South Bridge core voltage and/or cache memory
circuits.
The HIP6020A includes an Intel-compatible, TTL 5-input
digital-to-analog converter (DAC) that adjusts the core PWM
output voltage from 1.3V
DC
to 2.05V
DC
in 0.05V steps and
from 2.1V
DC
to 3.5V
DC
in 0.1V increments. The precision
reference and voltage-mode control provide
±1%
static
regulation. The second PWM controller’s output is user-
selectable, through a TTL-compatible signal applied at the
SELECT pin, for levels of 1.5V (±3%) or fully ON switch. The
linear regulators use external N-Channel MOSFETs or
bipolar NPN pass transistors to provide output voltages of
1.5V
±3%
(V
OUT3
) and 1.8V
±3%
(V
OUT4
).
The HIP6020A monitors all the output voltages. A single
Power Good signal is issued when the core is within ±10% of
the DAC setting and all other outputs 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
controllers’ 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 4 Regulated Voltages
- Microprocessor Core, AGP Bus, North/South Bridge
and/or Cache Memory, and GTL Bus Power
• Drives N-Channel MOSFETs
• Linear Regulator Drives Compatible with both MOSFET
and Bipolar Series Pass Transistors
• Simple Single-Loop Control Designs
- Voltage-Mode PWM Control
• Fast PWM Converter Transient Response
- High-Bandwidth Error Amplifiers
- Full 0% to 100% Duty Ratios
• Excellent Output Voltage Regulation
- Core PWM Output:
±1%
Over Temperature
- AGP Bus PWM Output:
±3%
Over Temperature
(1.5V Setting Only)
- Other Outputs:
±3%
Over Temperature
• TTL-Compatible 5 Bit DAC Microprocessor Core Output
Voltage Selection
- Wide Range - 1.3V
DC
to 3.5V
DC
• Power-Good Output Voltage Monitor
• Over-Voltage and Over-Current Fault Monitors
- Switching Regulators Use MOSFET’s r
DS(ON)
Sensing
• Small Converter Size
- Constant Frequency Operation
- 200kHz Free-Running Oscillator; Programmable From
50kHz to Over 1MHz
- Small External Component Count
Applications
• Motherboard Power Regulation for Computers
Pinout
HIP6020A (SOIC)
TOP VIEW
UGATE2 1
PHASE2 2
VID4 3
VID3 4
VID2 5
VID1 6
28 VCC
27 UGATE1
26 PHASE1
25 LGATE1
24 PGND
23 OCSET1
22 VSEN1
21 FB1
20 COMP1
19 FB3
18 DRIVE3
17 GND
16 VAUX
15 DRIVE4
Related Literature
• Technical Brief TB363 “Guidelines for Handling and
Processing Moisture Sensitive Surface Mount Devices
(SMDs)”
Ordering Information
PART NUMBER
HIP6020ACB
TEMP.
RANGE (
o
C)
0 to 70
PACKAGE
28 Ld SOIC
PKG.
NO.
M28.3
VID0 7
PGOOD 8
OCSET2 9
VSEN2 10
SELECT 11
SS 12
FAULT/RT 13
FB4 14
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.
Copyright © Intersil Americas Inc. 2001, All Rights Reserved
HIP6020A
Absolute Maximum Ratings
Supply Voltage, V
CC
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .+15V
PGOOD, RT/FAULT, DRIVE, PHASE, and
GATE Voltage . . . . . . . . . . . . . . . . . . . GND - 0.3V to V
CC
+ 0.3V
Input, Output or I/O Voltage . . . . . . . . . . . . . . . . . . GND -0.3V to 7V
ESD Classification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Class 1
Thermal Information
Thermal Resistance (Typical, Note 1)
θ
JA
(
o
C/W)
SOIC Package . . . . . . . . . . . . . . . . . . . . . . . . . . . .
70
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)
Recommended 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.
θJA
is measured with the component mounted on a low effective thermal conductivity test board in free air. See Tech Brief TB379 for details.
Electrical Specifications
PARAMETER
VCC SUPPLY CURRENT
Nominal Supply Current
POWER-ON RESET
Rising VCC Threshold
Falling VCC Threshold
Rising VAUX Threshold
VAUX Threshold Hysteresis
Rising V
OCSET1
Threshold
OSCILLATOR
Free Running Frequency
Total Variation
Ramp Amplitude
Recommended Operating Conditions, Unless Otherwise Noted. Refer to Figures 1, 2 and 3
SYMBOL
TEST CONDITIONS
MIN
TYP
MAX
UNITS
I
CC
UGATE1, LGATE1, UGATE2, DRIVE3, and
DRIVE4 Open
-
9
-
mA
V
OCSET
= 4.5V
V
OCSET
= 4.5V
V
OCSET
= 4.5V
V
OCSET
= 4.5V
-
8.2
-
-
-
-
-
2.5
0.5
1.26
10.4
-
-
-
-
V
V
V
V
V
F
OSC
RT = OPEN
6kΩ < RT to GND < 200kΩ
185
-15
-
200
-
1.9
215
+15
-
kHz
%
V
P-P
∆V
OSC
RT = Open
DAC AND STANDARD BUCK REGULATOR REFERENCE
DAC(VID0-VID4) Input Low Voltage
DAC(VID0-VID4) Input High Voltage
DACOUT Voltage Accuracy
PWM2 Reference Voltage
PWM2 Reference Voltage Tolerance
LINEAR REGULATORS (V
OUT3
AND V
OUT4
)
Regulation
FB3 Regulation Voltage
FB4 Regulation Voltage
FB3,4 Under-Voltage Level
FB3,4 Under-Voltage Hysteresis
Output Drive Current
VAUX-V
DRIVE
> 0.6V
20
VREG
3
VREG
4
FB
UV
FB Rising
-
-
-
-
3
1.5
1.8
75
7
40
-
-
-
-
-
%
V
V
%
%
mA
SELECT < 0.8V
2.0
-1.0
-
-
-
1.5
3
+1.0
-
-
0.8
V
V
%
V
%
4
HIP6020A
Electrical Specifications
PARAMETER
Recommended Operating Conditions, Unless Otherwise Noted. Refer to Figures 1, 2 and 3
(Continued)
SYMBOL
TEST CONDITIONS
MIN
TYP
MAX
UNITS
SYNCHRONOUS PWM CONTROLLER ERROR AMPLIFIER
DC Gain
Gain-Bandwidth Product
Slew Rate
PWM CONTROLLERS GATE DRIVERS
UGATE1,2 Source
UGATE1,2 Sink
LGATE Source
LGATE Sink
PROTECTION
VSEN1 Over-Voltage (VSEN1/DACOUT)
FAULT Sourcing Current
OCSET1,2 Current Source
Soft-Start Current
VSEN2 Under-Voltage Threshold
I
OVP
I
OCSET
I
SS
SELECT < 0.8V
SELECT > 2.0V
VSEN2 Under-Voltage Hysteresis
SELECT < 0.8V
SELECT > 2.0V
POWER GOOD
VSEN1 Upper Threshold
(VSEN1/DACOUT)
VSEN1 Under-Voltage
(VSEN1/DACOUT)
VSEN1 Hysteresis (VSEN1/DACOUT)
PGOOD Voltage Low
V
PGOOD
VSEN1 Rising
VSEN1 Rising
Upper/Lower Threshold
I
PGOOD
= -4mA
108
92
-
-
-
-
2
-
110
94
-
0.8
%
%
%
V
VSEN1 Rising
V
FAULT/RT
= 2.0V
V
OCSET
= 4.5V
DC
-
-
170
-
-
-
-
-
115
8.5
200
28
75
2.475
7
0.231
120
-
230
-
-
-
-
-
%
mA
µA
µA
%
V
%
V
I
UGATE
R
UGATE
I
LGATE
R
LGATE
VCC = 12V, V
UGATE1
(or V
UGATE2
) = 6V
V
GATE-PHASE
= 1V
VCC = 12V, V
LGATE1
= 1V
V
LGATE
= 1V
-
-
-
-
1
1.7
1
1.4
-
3.5
-
3.0
A
Ω
A
Ω
GBWP
SR
COMP1 = 10pF
-
-
-
88
15
6
-
-
-
dB
MHz
V/µs
Typical Performance Curves
140
C
UGATE1
= C
UGATE2
= C
LGATE1
= C
120
1000
RESISTANCE (kΩ)
R
T
PULLUP
TO +12V
I
CC
(mA)
100
80
C = 3600pF
60
C = 1500pF
10
R
T
PULLDOWN TO V
SS
40
20
0
100
V
IN
= 5V; SELECT < 0.8V
V
CC
= 12V
C = 4800pF
100
C = 660pF
10
100
SWITCHING FREQUENCY (kHz)
1000
200
300
400
500
600
700
800
900
1000
SWITCHING FREQUENCY (kHz)
FIGURE 1. R
T
RESISTANCE vs FREQUENCY
FIGURE 2. BIAS SUPPLY CURRENT vs FREQUENCY
5
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