1
File Number
4421.2
HIP6015
Buck Pulse-Width Modulator (PWM)
Controller and Output Voltage Monitor
The HIP6015 provides complete control and protection for a
DC-DC converter optimized for high-performance
microprocessor applications. It is designed to drive an
N-Channel MOSFET in a standard buck topology. The
HIP6015 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 HIP6015 includes a fully
TTL-compatible 5-input digital-to-analog converter (DAC)
that adjusts the 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 regulator
hold the selected output voltage to within
±
1% over
temperature and line voltage variations.
The HIP6015 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/
μ
s slew rate which enables high converter bandwidth for
fast transient performance. The resulting PWM duty ratio
ranges from 0% to 100%.
The HIP6015 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 HIP6015
protects against over-current and over-voltage conditions by
inhibiting PWM operation. Additional built-in over-voltage
protection triggers an external SCR to crowbar the input
supply. The HIP6015 monitors the current by using the
r
DS(ON)
of the upper MOSFET which eliminates the need for
a current sensing resistor.
Pinout
HIP6015
(SOIC)
TOP VIEW
Features
Drives N-Channel MOSFET
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 . . . . . . . . . . . . . . . . . . . 1.8V
DC
to 3.5V
DC
- 0.1V Binary Steps. . . . . . . . . . . . . . . 2.1V
DC
to 3.5V
DC
- 0.05V Binary Steps. . . . . . . . . . . . . 1.8V
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
Applications
Power Supply for Pentium, Pentium Pro, Pentium II,
PowerPC, K6, 6X86 and Alpha Microprocessors
High-Power 5V to 3.xV DC-DC Regulators
Low-Voltage Distributed Power Supplies
6X86 is a trademark of Cyrix Corporation.
Alpha is a trademark of Digital Equipment Corporation.
K6 is a trademark of Advanced Micro Devices, Inc.
Pentium is a registered trademark of Intel Corporation.
PowerPC is a trademark of IBM.
11
12
13
14
15
16
17
18
20
19
10
9
8
7
6
5
4
3
2
1
V
SEN
OCSET
SS
VID0
VID1
VID2
VID4
VID3
COMP
FB
R
T
OVP
V
CC
NC
NC
BOOT
UGATE
PHASE
PGOOD
GND
Ordering Information
PART NUMBER
TEMP.
RANGE (
o
C)
PACKAGE
PKG.
NO.
HIP6015CB
0 to 70
20 Ld SOIC
M20.3
Data Sheet
March 2000
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 321-724-7143
|
Copyright
Intersil Corporation 2000