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HIP6005A の電気的特性と機能

HIP6005AのメーカーはIntersil Corporationです、この部品の機能は「Buck Pulse-Width Modulator (PWM) Controller and Output Voltage Monitor」です。


製品の詳細 ( Datasheet PDF )

部品番号 HIP6005A
部品説明 Buck Pulse-Width Modulator (PWM) Controller and Output Voltage Monitor
メーカ Intersil Corporation
ロゴ Intersil Corporation ロゴ 




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HIP6005A Datasheet, HIP6005A PDF,ピン配置, 機能
Data Sheet
HIP6005A
September 1997 File Number 4418.1
Buck Pulse-Width Modulator (PWM)
Controller and Output Voltage Monitor
The HIP6005A 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
HIP6005A 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 HIP6005A includes a fully TTL-
compatible 5-input digital-to-analog converter (DAC) that
adjusts the output voltage from 2.1VDC to 3.5VDC in 0.1V
increments and from 1.8VDC to 2.05VDC 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 HIP6005A 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 HIP6005A 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 HIP6005A
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 HIP6005A monitors the current by using the
rDS(ON) of the upper MOSFET which eliminates the need for
a current sensing resistor.
Ordering Information
TEMP.
PART NUMBER RANGE (oC)
PACKAGE
HIP6005ACB
0 to 70 20 Ld SOIC
PKG.
NO.
M20.3
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.
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 . . . . . . . . . . . . . . . . . . . 1.8VDC to 3.5VDC
- 0.1V Binary Steps . . . . . . . . . . . . . . . 2.1VDC to 3.5VDC
- 0.05V Binary Steps . . . . . . . . . . . . . 1.8VDC to 2.05VDC
• Power-Good Output Voltage Monitor
• Over-Voltage and Over-Current Fault Monitors
- Does Not Require Extra Current Sensing Element,
Uses MOSFET’s rDS(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
Pinout
HIP6005A
(SOIC)
TOP VIEW
VSEN 1
OCSET 2
SS 3
VID0 4
VID1 5
VID2 6
VID3 7
VID4 8
COMP 9
FB 10
20 RT
19 OVP
18 VCC
17 NC
16 NC
15 BOOT
14 UGATE
13 PHASE
12 PGOOD
11 GND
2-98
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

1 Page





HIP6005A pdf, ピン配列
HIP6005A
Absolute Maximum Ratings
Supply Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +15V
Boot Voltage, VBOOT - VPHASE. . . . . . . . . . . . . . . . . . . . . . . . +15V
Input, Output or I/O Voltage . . . . . . . . . . . .GND -0.3V to VCC +0.3V
ESD Classification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Class 2
Operating Conditions
Supply Voltage, VCC . . . . . .
Ambient Temperature Range
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+12V ±10%
0oC to 70oC
Junction Temperature Range . . . . . . . . . . . . . . . . . . . . 0oC to 125oC
Thermal Information
Thermal Resistance (Typical, Note 1)
θJA (oC/W)
SOIC Package. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
110
SOIC Package (with 3in2 of Copper) . . . . . . . . . . .
86
Maximum Junction Temperature (Plastic Package) . . . . . . . .150oC
Maximum Storage Temperature Range . . . . . . . . . . -65oC to 150oC
Maximum Lead Temperature (Soldering 10s) . . . . . . . . . . . . .300oC
(SOIC - 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. θJA is measured with the component mounted on an evaluation PC board in free air.
Electrical Specifications Recommended Operating Conditions, Unless Otherwise Noted
PARAMETER
SYMBOL
TEST CONDITIONS
VCC SUPPLY CURRENT
Nominal Supply
POWER-ON RESET
ICC UGATE Open
Rising VCC Threshold
Falling VCC Threshold
Rising VOCSET Threshold
OSCILLATOR
VOCSET = 4.5V
VOCSET = 4.5V
Free Running Frequency
RT = Open
Total Variation
6k< RT to GND < 200k
Ramp Amplitude
REFERENCE AND DAC
VOSC RT = Open
DAC(VID0-VID4) Input Low Voltage
DAC(VID0-VID4) Input High Voltage
DACOUT Voltage Accuracy
ERROR AMPLIFIER
DC Gain
Gain-Bandwidth Product
GBW
Slew Rate
SR COMP = 10pF
GATE DRIVER
Upper Gate Source
Upper Gate Sink
PROTECTION
IUGATE
RUGATE
VBOOT - VPHASE = 12V, VUGATE = 6V
Over-Voltage Trip (VSEN/DACOUT)
OCSET Current Source
OVP Sourcing Current
Soft Start Current
IOCSET
IOVP
ISS
VOCSET = 4.5V
VSEN = 5.5V; VOVP = 0V
MIN TYP MAX UNITS
-5-
mA
- - 10.4
8.2 -
-
- 1.26 -
V
V
V
185 200 215
-15 - +15
- 1.9 -
kHz
%
VP-P
- - 0.8
2.0 -
-
-1.0 - +1.0
V
V
%
- 88 -
- 15 -
-6-
dB
MHz
V/µs
350 500
- 5.5
-
10
mA
- 115 120
170 200 230
60 -
-
- 10 -
%
µA
mA
µA
2-100


3Pages


HIP6005A 電子部品, 半導体
HIP6005A
Functional Description
Initialization
The HIP6005A 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 VCC pin and the input voltage (VIN) on
the OCSET pin. The level on OCSET is equal to VIN less a
fixed voltage drop (see over-current protection). The POR
function initiates soft start operation after both input supply
voltages exceed their POR thresholds. For operation with a
single +12V power source, VIN and VCC are equivalent and
the +12V power source must exceed the rising VCC
threshold before POR initiates operation.
Soft Start
The POR function initiates the soft start sequence. An
internal 10µA current source charges an external capacitor
(CSS) on the SS pin to 4V. Soft start clamps the error
amplifier output (COMP pin) and reference input (+ terminal
of error amp) to the SS pin voltage. Figure 3 shows the soft
start interval with CSS = 0.1µF. Initially the clamp on the error
amplifier (COMP pin) controls the converter’s output voltage.
At t1 in Figure 3, the SS voltage reaches the valley of the
oscillator’s triangle wave. The oscillator’s triangular
waveform is compared to the ramping error amplifier voltage.
This generates PHASE pulses of increasing width that
charge the output capacitor(s). This interval of increasing
pulse width continues to t2. With sufficient output voltage,
the clamp on the reference input controls the output voltage.
This is the interval between t2 and t3 in Figure 3. At t3 the SS
voltage exceeds the DACOUT voltage and the output
voltage is in regulation. This method provides a rapid and
controlled output voltage rise. The PGOOD signal toggles
‘high’ when the output voltage (VSEN pin) is within ±5% of
DACOUT. The 2% hysteresis built into the power good
comparators prevents PGOOD oscillation due to nominal
output voltage ripple.
PGOOD
(2V/DIV.)
0V
SOFT-START
(1V/DIV.)
OUTPUT
VOLTAGE
(1V/DIV.)
0V
0V
t1 t2 t3
TIME (5ms/DIV.)
FIGURE 3. SOFT START INTERVAL
Over-Current Protection
The over-current function protects the converter from a
shorted output by using the upper MOSFET’s on-resistance,
rDS(ON) to monitor the current. This method enhances the
converter’s efficiency and reduces cost by eliminating a
current sensing resistor.
4V
2V
0V
15A
10A
5A
0A
TIME (20ms/DIV.)
FIGURE 4. OVER-CURRENT OPERATION
The over-current function cycles the soft-start function in a
hiccup mode to provide fault protection. A resistor (ROCSET)
programs the over-current trip level. An internal 200µA current
sink develops a voltage across ROCSET that is referenced to
VIN. When the voltage across the upper MOSFET (also
referenced to VIN) exceeds the voltage across ROCSET, the
over-current function initiates a soft-start sequence. The soft-
start function discharges CSS with a 10µA current sink and
inhibits PWM operation. The soft-start function recharges CSS,
and PWM operation resumes with the error amplifier clamped
to the SS voltage. Should an overload occur while recharging
CSS, the soft start function inhibits PWM operation while fully
charging CSS to 4V to complete its cycle. Figure 4 shows this
operation with an overload condition. Note that the inductor
current increases to over 15A during the CSS charging interval
and causes an over-current trip. The converter dissipates very
little power with this method. The measured input power for the
conditions of Figure 4 is 2.5W.
The over-current function will trip at a peak inductor current
(IPEAK) determined by:
IPEAK = I--O-----C----S----rE--D--T--S----(--O-R----N-O---)-C----S----E----T--
where IOCSET is the internal OCSET current source (200µA
typical). The OC trip point varies mainly due to the
MOSFETs rDS(ON) variations. To avoid over-current tripping
in the normal operating load range, find the ROCSET resistor
from the equation above with:
1. The maximum rDS(ON) at the highest junction temperature.
2. The minimum IOCSET from the specification table.
3. Determine IPEAK for IPEAK > IOUT(MAX) + (∆I) ⁄ 2 ,
where I is the output inductor ripple current.
2-103

6 Page



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部品番号部品説明メーカ
HIP6005

Buck Pulse-Width Modulator (PWM) Controller and Output Voltage Monitor

Intersil Corporation
Intersil Corporation
HIP6005A

Buck Pulse-Width Modulator (PWM) Controller and Output Voltage Monitor

Intersil Corporation
Intersil Corporation
HIP6005ACB

Buck Pulse-Width Modulator (PWM) Controller and Output Voltage Monitor

Intersil Corporation
Intersil Corporation
HIP6005B

Buck Pulse-Width Modulator (PWM) Controller and Output Voltage Monitor

Intersil Corporation
Intersil Corporation


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