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HIP6004B
Data Sheet
October 2003
FN4567.3
Buck and Synchronous-Rectifier (PWM)
Controller and Output Voltage Monitor
The HIP6004B provides complete control and protection for
a DC-DC converter optimized for high-performance
microprocessor applications. It is designed to drive two
N-Channel MOSFETs in a synchronous-rectified buck
topology. The HIP6004B integrates all of the control, output
adjustment, monitoring and protection functions into a single
package.
The output voltage of the converter is easily adjusted and
precisely regulated. The HIP6004B includes a fully
TTL-compatible 5-input digital-to-analog converter (DAC)
that adjusts the output voltage from 1.3V
DC
to 2.05V
DC
in
0.05V and from 2.1V
DC
to 3.5V
DC
in 0.1V increments steps.
The precision reference and voltage-mode regulator hold the
selected output voltage to within
±1%
over temperature and
line voltage variations.
The HIP6004B provides simple, single feedback loop,
voltage-mode control with fast transient response. It includes
a 200kHz free-running triangle-wave oscillator that is
adjustable from below 50kHz to over 1MHz. The error
amplifier features a 15MHz gain-bandwidth product and
6V/µs slew rate which enables high converter bandwidth for
fast transient performance. The resulting PWM duty ratio
ranges from 0% to 100%.
The HIP6004B monitors the output voltage with a window
comparator that tracks the DAC output and issues a Power
Good signal when the output is within
±10%.
The HIP6004B
protects against over-current and overvoltage conditions by
inhibiting PWM operation. Additional built-in overvoltage
protection triggers an external SCR to crowbar the input
supply. The HIP6004B monitors the current by using the
r
DS(ON)
of the upper MOSFET which eliminates the need for
a current sensing resistor.
Features
• Drives Two N-Channel MOSFETs
• Operates from +5V or +12V Input
• Simple Single-Loop Control Design
- Voltage-Mode PWM Control
• Fast Transient Response
- High-Bandwidth Error Amplifier
- Full 0% to 100% Duty Ratio
• Excellent Output Voltage Regulation
-
±1%
Over Line Voltage and Temperature
• TTL-Compatible 5-Bit Digital-to-Analog Output
Voltage Selection
- Wide Range . . . . . . . . . . . . . . . . . . . 1.3V
DC
to 3.5V
DC
- 0.1V Binary Steps . . . . . . . . . . . . . . 2.1V
DC
to 3.5V
DC
- 0.05V Binary Steps . . . . . . . . . . . . 1.3V
DC
to 2.05V
DC
• Power-Good Output Voltage Monitor
• 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
• QFN Package:
- Compliant to JEDEC PUB95 MO-220
QFN - Quad Flat No Leads - Package Outline
- Near Chip Scale Package footprint, which improves
PCB efficiency and has a thinner profile
Applications
• Power Supply for Pentium®, Pentium Pro, Pentium II,
PowerPC™, K6™, 6X86™ and Alpha™ Microprocessors
• High-Power 5V to 3.xV DC-DC Regulators
Ordering Information
PART NUMBER
HIP6004BCB
HIP6004BCV
HIP6004BCR
TEMP.
RANGE (
o
C)
0 to 70
0 to 70
0 to 70
PACKAGE
20 Ld SOIC
20 Ld TSSOP
20 Ld 5x5 QFN
PKG.
DWG. #
M20.3
M20.173
L20.5x5
• Low-Voltage Distributed Power Supplies
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 registered trademark of Intersil Americas Inc.
Copyright © Intersil Americas Inc. 2003. All Rights Reserved.
All other trademarks mentioned are the property of their respective owners.
HIP6004B
Absolute Maximum Ratings
Supply Voltage, V
CC
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .+15V
Boot Voltage, V
BOOT
- V
PHASE
. . . . . . . . . . . . . . . . . . . . . . . .+15V
Input, Output or I/O Voltage . . . . . . . . . . . . GND -0.3V to V
CC
+0.3V
ESD Classification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Class 2
Thermal Information
Thermal Resistance
θ
JA
(
o
C/W)
θ
JC
(
o
C/W)
Operating Conditions
Supply Voltage, V
CC
. . . . . . . . . . . . . . . . . . . . . . . . . . . +12V
±10%
Ambient Temperature Range. . . . . . . . . . . . . . . . . . . . . 0
o
C to 70
o
C
SOIC Package (Note 1) . . . . . . . . . . . .
65
NA
TSSOP Package (Note 1) . . . . . . . . . .
85
NA
QFN Package (Notes 2, 3). . . . . . . . . .
33
5
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
(Lead Tips Only)
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 a high effective thermal conductivity test board in free air. See Tech Brief TB379 for details.
2.
θ
JA
is measured in free air with the component mounted on a high effective thermal conductivity test board with “direct attach” features. See
Tech Brief TB379.
3. For
θ
JC
, the “case temp” location is the center of the exposed metal pad on the package underside.
Electrical Specifications
PARAMETER
V
CC
SUPPLY CURRENT
Nominal Supply
POWER-ON RESET
Rising V
CC
Threshold
Falling V
CC
Threshold
Rising V
OCSET
Threshold
OSCILLATOR
Free Running Frequency
Total Variation
Ramp Amplitude
REFERENCE AND DAC
Recommended Operating Conditions, Unless Otherwise Noted
SYMBOL
TEST CONDITIONS
MIN
TYP
MAX
UNITS
I
CC
UGATE and LGATE Open
-
5
-
mA
V
OCSET
= 4.5V
V
OCSET
= 4.5V
-
8.2
-
-
-
1.26
10.4
-
-
V
V
V
RT = OPEN
185
-15
-
200
-
1.9
215
+15
-
kHz
%
V
P-P
6kΩ < RT to GND < 200kΩ
∆V
OSC
RT = Open
DAC (VID0-VID4) Input Low Voltage
DAC (VID0-VID4) Input High Voltage
DACOUT Voltage Accuracy
ERROR AMPLIFIER
DC Gain
Gain-Bandwidth Product
Slew Rate
GATE DRIVERS
Upper Gate Source
Upper Gate Sink
Lower Gate Source
Lower Gate Sink
PROTECTION
Over-Voltage Trip (V
SEN
/DACOUT)
OCSET Current Source
OVP Sourcing Current
Soft Start Current
I
OCSET
I
OVP
I
SS
V
OCSET
= 4.5V
DC
V
SEN
= 5.5V, V
OVP
= 0V
I
UGATE
R
UGATE
I
LGATE
R
LGATE
V
BOOT
- V
PHASE
= 12V, V
UGATE
= 6V
I
LGATE
= 0.3A
V
CC
= 12V, V
LGATE
= 6V
I
LGATE
= 0.3A
GBW
SR
COMP = 10pF
-
2.0
-1.0
-
-
-
0.8
-
+1.0
V
V
%
-
-
-
88
15
6
-
-
-
dB
MHz
V/µs
350
-
300
-
500
5.5
450
3.5
-
10
-
6.5
mA
Ω
mA
Ω
-
170
60
-
115
200
-
10
120
230
-
-
%
µA
mA
µA
4
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