®
HIP6012
Data Sheet
December 27, 2004
FN4324.2
Buck and Synchronous-Rectifier
Pulse-Width Modulator (PWM) Controller
The HIP6012 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 HIP6012 integrates all of the control, output
adjustment, monitoring and protection functions into a single
package.
The output voltage of the converter can be precisely
regulated to as low as 1.27V, with a maximum tolerance of
±1.5%
over temperature and line voltage variations.
The HIP6012 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 HIP6012 protects against overcurrent conditions by
inhibiting PWM operation. The HIP6012 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
- 1.27V Internal Reference
-
±1.5%
Over Line Voltage and Temperature
• Overcurrent Fault Monitor
- Does Not Require Extra Current Sensing Element
- Uses MOSFETs r
DS(ON)
• Small Converter Size
- Constant Frequency Operation
- 200kHz Free-Running Oscillator Programmable from
50kHz to Over 1MHz
• 14 Pin, SOIC and TSSOP Packages
•
Pb-Free Available (RoHS Compliant)
Applications
• Power Supply for Pentium®, Pentium Pro, PowerPC™ and
Alpha™ Microprocessors
• High-Power 5V to 3.xV DC-DC Regulators
• Low-Voltage Distributed Power Supplies
Pinout
HIP6012
(SOIC, TSSOP)
TOP VIEW
RT
OCSET
SS
COMP
FB
EN
GND
1
2
3
4
5
6
7
14 VCC
13 PVCC
12 LGATE
11 PGND
10 BOOT
9
8
UGATE
PHASE
Ordering Information
PART
NUMBER
HIP6012CB
HIP6012CBZ
(See Note)
HIP6012CV
HIP6012CVZ
(See Note)
TEMP.
RANGE (
o
C)
0 to 70
0 to 70
0 to 70
0 to 70
PACKAGE
14 Ld SOIC
14 Ld SOIC (Pb-free)
14 Ld TSSOP
14 Ld TSSOP (Pb-free)
PKG.
NO.
M14.15
M14.15
M14.173
M14.173
Add “-T” suffix for tape and reel.
NOTE: Intersil Pb-free products employ special Pb-free material
sets; molding compounds/die attach materials and 100% matte tin
plate termination finish, which are RoHS compliant and compatible
with both SnPb and Pb-free soldering operations. Intersil Pb-free
products are MSL classified at Pb-free peak reflow temperatures that
meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020.
PowerPC™ is a trademark of IBM.
Alpha™ is a trademark of Digital Equipment Corporation.
Pentium® is a registered trademark of Intel Corporation.
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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