HIP6200, HIP6201
Data Sheet
February 1998
File Number
4423.2
Transient Voltage Regulator
DeCAPitator™
The Intersil DeCAPitator helps to stabilize a power system
voltage during severe transients. It accomplishes this by
supplying current when the voltage is more than 1% low or
sinking current when the voltage is higher than 1.5% from
the average load voltage. The fast transient response of the
DeCAPitator can make up for the slow response time of
many switching DC-DC converters.
Although the HIP6200 serves as a simple replacement for
large output capacitors for any dynamic load, it is especially
useful in stabilizing the CPU core voltage in portable
computer applications, where size and efficiency are major
concerns. The DeCAPitator enables power supply designs
for more powerful microprocessors without increasing
converter size or decreasing converter efficiency.
The DeCAPitator acts independently of the PWM control
circuitry. This simplifies converter layout because the
DeCAPitator and the load may be located separately from
the DC-DC converter. The DeCAPitator should be located
near the load for optimum performance.
Features
• Saves Power System Size and Cost
- Replaces Expensive Bulk Capacitors
- Small 8 Lead SOIC Package
• Linear Regulator Response
- Greater than 5MHz Bandwidth
• Very Low Static Power Dissipation
- Shutdown Current . . . . . . . . . . . . . . . . . . . . . . . . . < 5µA
- Power Dissipated Only During Load Transients
• Over Temperature Shutdown/Signal
• Simplifies Power Supply Layout
- Allows for Remotely Located CPU DC-DC Converter
Applications
• Notebook Computers
• Pentium®, Pentium Pro, and Pentium II Power Supplies
Ordering Information
PART NUMBER
HIP6200CB
HIP6201CB
TEMP.
RANGE (
o
C)
0 to 70
0 to 70
PACKAGE
8 Ld SOIC
8 Ld SOIC
PKG.
NO.
M8.15
M8.15
Pinouts
HIP6200 (SOIC)
TOP VIEW
PV
CC
PGND
GND
V
CC
1
2
3
4
8 EN/OT
7 OUT
6 SNS
5 CAP
PV
CC
PGND
GND
V
CC
HIP6201 (SOIC)
TOP VIEW
1
2
3
4
8 EN
7 OUT
6 SNS
5 CAP
Pentium® is a registered trademark of Intel Corporation.
DeCAPitator™ is a trademark of Intersil Corporation.
2-441
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
HIP6200, HIP6201
Typical Application - Portable CPU Dynamic Regulator
BATTERY
POWER
+5V
V
CC
4
EN/OT
8
POR
X 0.99
R
CAP
5
20R
+
X 1.015
6
SNS
CPU
LOAD
2
PGND
HIP6200
+
1
PV
CC
PWM
CONTROLLER
-
7
OUT
-
3
GND
Block Diagram
V
CC
P
VCC
R
VCC
EN/OT
(HIP6200)
EN
(HIP6201)
POWER-ON
RESET (POR)
THERMAL
MONITOR
(TMON)
99%
UPPER
COMPARATOR
+
-
ENABLE
+
UPPER
AMPLIFIER
-
OUT
R
T1
CAP
R
T2
LOWER
AMPLIFIER
+
-
+
-
101.5%
LOWER
COMPARATOR
GND
PGND
ENABLE
R
GND
R
OUT
SNS
2-442
HIP6200, HIP6201
Functional Pin Description
P
VCC
(Pin 1)
P
VCC
is the power source for the npn transistor output
device. P
VCC
is connected internally to V
CC
through a
resistor. Bulk capacitance should be placed between this pin
and PGND to minimize voltage deviations.
SNS (Pin 6)
SNS is the remote sense of the output voltage to be
regulated. If the output voltage increases rapidly by greater
than 1.5%, the lower amplifier responds by turning on the N-
Channel MOSFET to sink current through the OUT pin to
PGND. If the output voltage decreases rapidly by greater
than 1%, the upper amplifier responds by turning on the npn
transistor to source current from P
VCC
to OUT.
PGND (Pin 2)
PGND is power ground for the N-Channel MOSFET output
device. Tie this pin to the ground plane of the circuit board.
OUT (Pin 7)
This pin is the output pin of the IC. Tie this pin directly to the
voltage to be regulated.
GND (Pin 3)
GND is signal ground for the IC. Tie this pin to the ground
plane of the circuit board.
EN/OT or EN (Pin 8)
This pin is the only differentiation between the HIP6200 and
the HIP6201.
On the HIP6200, this pin is multiplexed. It is chip enable and
also an overtemperature indicator. When this pin is low, the
chip is disabled. If an overtemperature occurs, this pin will be
pulled low internally. Tie EN/OT to a pull-up resistor and
drive with an open collector signal.
On the HIP6201, this pin is chip enable only. Pulling it low
disables the IC. EN should be driven with a logic signal.
V
CC
(Pin 4)
V
CC
provides bias power to the chip. It should be tied to
system 5V. Provide local decoupling to this pin.
CAP (Pin 5)
Connect a capacitor to GND to set the internal amplifiers’
on-time response to a rapid voltage change at the SNS pin.
2-443
HIP6200, HIP6201
Absolute Maximum Ratings
Supply Voltage, V
CC
, P
VCC
. . . . . . . . . . . . . . . . . . . . . . . . . . . +7.0V
EN, CAP, OUT, SNS. . . . . . . . . . . . . . . . . . . . . . . .GND-0.3V to +7V
GND - PGND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.5V to +0.5V
Thermal Information
Thermal Resistance (Typical, Note 1)
θ
JA
(
o
C/W)
SOIC Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
145
o
C/W
Maximum Junction Temperature . . . . . . . . . . . . . . . . . . . . . . .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
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . +5V
±5%
Output Device Supply Voltage, P
VCC
. . . . . . . . . . . . +4.5V to +5.5V
Output Voltage, OUT = SNS = CAP. . . . . . . . . . . . . . +1.3V to +2.0V
Load Transient Current
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±8A
Ambient Operating 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
V
CC
SUPPLY CURRENT
Nominal Supply
Shutdown Supply
PROTECTION CIRCUITRY
EN Threshold
Overtemperature (OT) Threshold
On-Resistance of OT NMOS
POWER-ON RESET (POR)
V
CC
Rising Threshold
V
CC
Falling Threshold
CAP Rising Threshold
CAP Falling Threshold
POR Turn-Off Delay to EN Falling
POR Turn-On Delay to EN Rising
POR Turn-Off Delay to V
CC
UV
POR Turn-On Delay after V
CC
UV
POR Turn-Off Delay to CAP UV
POR Turn-On Delay after CAP UV
REFERENCE VOLTAGE
V
SNS
- V
CAP
V
CAP
- V
SNS
AMPLIFIERS
Transconductance
Response Time (Rising)
Response Time (Falling)
RESISTOR VALUES
Small Time Constant Resistor
Large Time Constant Resistor
V
CC
to P
VCC
Resistor
OUT to SNS Resistor
GND to PGND Resistors
Recommended Operating Conditions, Unless Otherwise Noted
SYMBOL
TEST CONDITIONS
MIN
TYP
MAX
UNITS
µA
µA
I
VCC
I
VCC_SD
V
TH_EN
OT
R
ds_TFN
V
THH_VCC
V
THL_VCC
V
TH_CAP
EN = V
CC
EN = V
CC
EN = V
CC
EN = V
CC
EN = GND
-
-
300
1
-
-
0.8
130
-
1.5
150
250
2.0
170
600
V
o
C
Ω
-
3.6
-
0.95
-
-
4.1
4.0
1.10
1.05
2
1
15
15
2
15
4.5
-
1.20
-
-
-
-
-
-
-
V
V
V
V
µs
ms
µs
µs
µs
µs
EN = V
CC
, V
CC
Falling
EN = V
CC
, V
CC
Rising
EN = V
CC
, CAP Falling
EN = V
CC
, CAP Rising
V
HIGH
V
LOW
CAP = 2V, SNS Increased Until Amplifier Turns On
CAP = 2V, SNS Decreased Until Amplifier Turns On
-
-
-
-
-
-
30
20
-
-
mV
mV
-
60mV Step on OUT, Time for I
OUT
< -4A
-60mV Step on OUT, Time for I
OUT
> 4A
R
T1
R
T2
R
VCC
R
OUT
R
GND
50
50
500
100
100
-
175
175
A/V
ns
ns
Ω
Ω
Ω
Ω
Ω
120
3000
6
1000
-
200
4000
10
1500
140
250
5500
16
2100
-
2-444
HIP6200, HIP6201
Application Information
Theory of Operation
The HIP6200 is used in conjunction with a switching DC-DC
converter to provide a regulated DC voltage. The output
voltage of a DC-DC converter changes instantly with sudden
load changes characteristic of today’s microprocessors. This
change occurs because the bulk capacitors are imperfect;
they have parasitic resistances (ESR) and inductances (ESL)
which translate into voltage drops as the load is initially
supplied by the bulk capacitance. Also, due to its output
inductor, the DC-DC converter takes about 10-20µs (typical)
before it provides the load current required by the CPU. The
HIP6200 contains two high-speed linear regulators which are
inactive except during the converter response time after high
di/dt load transients. When active, the linear regulators
maintain a small difference between the desired and actual
output voltage.
The Typical Application Diagrams below illustrate how the
DeCAPitator functions. The left side shows a common DC-
DC converter response to a fast ‘low-to-high’ load transient.
The right side shows a similar response with a HIP6200
circuit employed. The HIP6200 allows the use of fewer bulk
capacitors to handle the regulation requirements of the high
edge-rate load transients. The response time of the
HIP6200’s linear regulators (100ns typical) are fast enough
to help with the leading edge spike. Output voltage
deviations during the converter response time are reduced
with the HIP6200 since it helps supply the load while the
inductor current slews.
Typical Application Diagrams
BATTERY
POWER
PWM
CONTROLLER
+5V
BATTERY
POWER
V
CC
V
OUT
I
CPU
PWM
CONTROLLER
I
L
C
BULK
CPU
LOAD
C
CAP
V
CAP
4
EN 8
HIP6201
CAP 5
3
GND
2
6
1
7
OUT
I
OUT
SNS
I
CPU
CPU
LOAD
C
BULK
V
OUT
P
VCC
C
PVCC
I
L
PGND
C
BULK
: (11) 220µF, 10V, 0.1Ω Tantalums
C
BULK
: (5) 100µF, 10V, 0.1Ω Tantalums
C
CAP
: small Ceramic (0805)
C
VCC
: small Ceramic (0805)
C
PVCC
: (1) 100µF, 10V, 0.1Ω Tantalum
I
CPU
I
L
I
CPU
I
L
V
CAP
V
OUT
V
OUT
I
OUT
CONVERTER
RESPONSE TIME (T
R
)
FIGURE 1. PORTABLE CPU WITHOUT HIP6200, HIP6201
FIGURE 2. PORTABLE CPU WITH HIP6200, HIP6201
2-445
嵌入式系统
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