HIP6015 Intersil Corporation, HIP6015 Datasheet

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HIP6015

Manufacturer Part Number
HIP6015
Description
Buck Pulse-Width Modulator (PWM) Controller and Output Voltage Monitor
Manufacturer
Intersil Corporation
Datasheet
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
0.1V increments and from 1.8V
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/ 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
a current sensing resistor.
Pinout
DS(ON)
of the upper MOSFET which eliminates the need for
OCSET
COMP
V
VID0
VID1
VID2
VID3
VID4
SEN
SS
FB
10
1
2
3
4
5
6
7
8
9
TOP VIEW
HIP6015
(SOIC)
1
DC
to 2.05V
Data Sheet
20
19
18
17
16
15
14
13
12
11
R
OVP
V
NC
NC
BOOT
UGATE
PHASE
PGOOD
GND
DC
CC
T
DC
to 3.5V
in 0.05V
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
DC
in
Features
• Drives N-Channel MOSFET
• Operates from +5V or +12V Input
• Simple Single-Loop Control Design
• Fast Transient Response
• Excellent Output Voltage Regulation
• TTL-Compatible 5-Bit Digital-to-Analog Output Voltage
• Power-Good Output Voltage Monitor
• Over-Voltage and Over-Current Fault Monitors
• Small Converter Size
Applications
• Power Supply for Pentium®, Pentium Pro, Pentium II,
• High-Power 5V to 3.xV DC-DC Regulators
• Low-Voltage Distributed Power Supplies
Ordering Information
HIP6015CB
1-888-INTERSIL or 321-724-7143
PART NUMBER
- Voltage-Mode PWM Control
- High-Bandwidth Error Amplifier
- Full 0% to 100% Duty Ratio
-
Selection
- Wide Range . . . . . . . . . . . . . . . . . . . 1.8V
- 0.1V Binary Steps . . . . . . . . . . . . . . . 2.1V
- 0.05V Binary Steps . . . . . . . . . . . . . 1.8V
- Does Not Require Extra Current Sensing Element,
- Constant Frequency Operation
- 200kHz Free-Running Oscillator Programmable from
PowerPC™, K6™, 6X86™ and Alpha™ Microprocessors
Uses MOSFET’s r
50kHz to over 1MHz
1% Over Line Voltage and Temperature
March 2000
Alpha™ is a trademark of Digital Equipment Corporation.
Pentium® is a registered trademark of Intel Corporation.
K6™ is a trademark of Advanced Micro Devices, Inc.
RANGE (
DS(ON)
TEMP.
0 to 70
6X86™ is a trademark of Cyrix Corporation.
o
|
C)
Copyright
File Number
20 Ld SOIC
PowerPC™ is a trademark of IBM.
PACKAGE
©
Intersil Corporation 2000
HIP6015
DC
DC
DC
to 2.05V
to 3.5V
to 3.5V
4421.2
M20.3
PKG.
NO.
DC
DC
DC

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HIP6015 Summary of contents

Page 1

... 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 ...

Page 2

... Block Diagram V SEN OCSET REFERENCE VID0 D/A VID1 VID2 CONVERTER VID3 (DAC) VID4 FB COMP HIP6015 +12V V CC OCSET MONITOR AND PROTECTION BOOT OSC UGATE PHASE HIP6015 - + + - COMP V GND SEN 110% RESET (POR 90 OVER- 115% VOLTAGE + - + - OVER- CURRENT 200 A 4V PWM COMPARATOR ...

Page 3

... Upper Gate Sink PROTECTION Over-Voltage Trip (V /DACOUT) SEN OCSET Current Source OVP Sourcing Current Soft Start Current 3 HIP6015 Thermal Information Thermal Resistance (Typical, Note 1) SOIC Package +0.3V CC Maximum Junction Temperature (Plastic Package .150 Maximum Storage Temperature Range . . . . . . . . . . -65 Maximum Lead Temperature (Soldering 10s .300 ...

Page 4

... OCSET (Pin 2) Connect a resistor (R ) from this pin to the drain of the OCSET upper MOSFET internal 200 A current source OCSET (I ), and the upper MOSFET on-resistance (r OCS 4 HIP6015 SYMBOL TEST CONDITIONS V Rising SEN V Falling SEN Upper and Lower Threshold V I ...

Page 5

... T 5 HIP6015 Functional Description Initialization The HIP6015 automatically initializes upon receipt of power. Special sequencing of the input supplies is not necessary. The Power-On Reset (POR) function continually monitors the input supply voltages. The POR monitors the bias voltage at the V OCSET pin. The level on OCSET is equal to V voltage drop (see over-current protection) ...

Page 6

... NOTE connected to GND connected HIP6015 inhibits PWM operation. The soft-start function recharges C , and PWM operation resumes with the error amplifier SS clamped to the SS voltage. Should an overload occur while recharging C while fully charging C shows this operation with an overload condition. Note that the inductor current increases to over 15A during the C charging interval and causes an over-current trip ...

Page 7

... O Locate the HIP6015 within 3 inches of the MOSFET, Q circuit traces for the MOSFET’s gate and source connections from the HIP6015 must be sized to handle peak current. Figure 6 shows the circuit traces that require additional layout consideration. Use single point and ground plane construction for the circuits shown ...

Page 8

... The compensation network consists of the error amplifier (internal to the HIP6015) and the impedance networks Z and Z . The goal of the compensation network provide a closed loop transfer function with the highest 0dB crossing frequency (f ) and adequate phase margin. 0dB ...

Page 9

... Given a sufficiently fast control loop design, the HIP6015 will provide either 0% or 100% duty cycle in response to a load transient. The response time is the time required to slew the inductor current from an initial current value to the transient current level ...

Page 10

... These equations assume linear voltage-current transitions and are approximations. The gate-charge losses are dissipated by the HIP6015 and do not heat the MOSFET. However, large gate- charge increases the switching interval, t the upper MOSFET switching losses. Ensure that the ...

Page 11

... Schottky, Motorola MBR2535CTL or Equivalent Intersil MOSFET; RFP70N03 1 11 HIP6015 in application note AN9706. Although the Application Note details the HIP6005, the same evaluation platform can be used to evaluate the HIP6015. Intersil AnswerFAX (321-724- 7800) doc. #99706 2N6394 +12V ...

Page 12

... For information regarding Intersil Corporation and its products, see web site www.intersil.com Sales Office Headquarters NORTH AMERICA Intersil Corporation P. O. Box 883, Mail Stop 53-204 Melbourne, FL 32902 TEL: (321) 724-7000 FAX: (321) 724-7240 12 HIP6015 M20.3 (JEDEC MS-013-AC ISSUE C) 20 LEAD WIDE BODY SMALL OUTLINE PLASTIC PACKAGE SYMBOL A ...

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