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HIP6012 の電気的特性と機能

HIP6012のメーカーはIntersil Corporationです、この部品の機能は「Buck and Synchronous-Rectifier Pulse-Width Modulator (PWM) Controller」です。


製品の詳細 ( Datasheet PDF )

部品番号 HIP6012
部品説明 Buck and Synchronous-Rectifier Pulse-Width Modulator (PWM) Controller
メーカ Intersil Corporation
ロゴ Intersil Corporation ロゴ 




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HIP6012 Datasheet, HIP6012 PDF,ピン配置, 機能
Data Sheet
HIP6012
June 1997
File Number 4324
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 HIP60012 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 over-current conditions by
inhibiting PWM operation. The HIP6012 monitors the current
by using the rDS(ON) of the upper MOSFET which eliminates
the need for a current sensing resistor.
Pinout
HIP6012
(SOIC)
TOP VIEW
RT 1
OCSET 2
SS 3
COMP 4
FB 5
EN 6
GND 7
14 VCC
13 PVCC
12 LGATE
11 PGND
10 BOOT
9 UGATE
8 PHASE
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
• Over-Current Fault Monitor
- Does Not Require Extra Current Sensing Element
- Uses MOSFETs rDS(ON)
• Small Converter Size
- Constant Frequency Operation
- 200kHz Free-Running Oscillator Programmable from
50kHz to Over 1MHz
• 14 Pin, SOIC Package
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
Ordering Information
TEMP.
PART NUMBER RANGE (oC)
PACKAGE
HIP6012CB
0 to 70 14 Ld SOIC
PKG.
NO.
M14.15
2-152
PowerPC™ is a trademark of IBM.
Alpha™ is a trademark of Digital Equipment Corporation.
Pentium® is a registered trademark of Intel Corporation.
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





HIP6012 pdf, ピン配列
HIP6012
Absolute Maximum Ratings
Supply Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +15.0V
Boot Voltage, VBOOT - VPHASE. . . . . . . . . . . . . . . . . . . . . . . +15.0V
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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
115
Maximum Junction Temperature . . . . . . . . . . . . . . . . . . . . . . 150oC
Maximum Storage Temperature Range . . . . . . . . . . -65oC to 150oC
Maximum Lead Temperature (Soldering 10s) . . . . . . . . . . . . 300oC
(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
PARAMETER
VCC SUPPLY CURRENT
Nominal Supply
Shutdown Supply
POWER-ON RESET
Rising VCC Threshold
Falling VCC Threshold
Enable - Input threshold Voltage
Rising VOCSET Threshold
OSCILLATOR
Free Running Frequency
Total Variation
Ramp Amplitude
REFERENCE
Reference Voltage
ERROR AMPLIFIER
DC Gain
Gain-Bandwidth Product
Slew Rate
GATE DRIVERS
Upper Gate Source
Upper Gate Sink
Lower Gate Source
Lower Gate Sink
PROTECTION
OCSET Current Source
Soft Start Current
Recommended Operating Conditions, Unless Otherwise Noted
SYMBOL
TEST CONDITIONS
MIN
ICC EN = VCC; UGATE and LGATE Open
EN = 0V
-
-
VOCSET = 4.5VDC
VOCSET = 4.5VDC
VOCSET = 4.5VDC
-
8.8
0.8
-
VOSC
RT = OPEN, VCC = 12
6k< RT to GND < 200k
RT = OPEN
180
-20
-
1.251
GBW
SR
COMP = 10pF
-
-
-
IUGATE
RUGATE
ILGATE
RLGATE
VBOOT - VPHASE = 12V, VUGATE = 6V
ILGATE = 0.3A
VCC = 12V, VLGATE = 6V
ILGATE = 0.3A
IOCSET
ISS
VOCSET = 4.5VDC
350
-
300
-
170
-
TYP
5
50
-
-
-
1.27
200
-
1.9
1.270
88
15
6
500
5.5
450
3.5
200
10
MAX
-
100
10.4
-
2.0
-
220
+20
-
1.289
-
-
-
-
10
-
6.5
230
-
UNITS
mA
µA
V
V
V
V
kHz
%
VP-P
V
dB
MHz
V/µs
mA
mA
µA
µA
2-154


3Pages


HIP6012 電子部品, 半導体
HIP6012
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.
For an equation for the ripple current see the section under
component guidelines titled ‘Output Inductor Selection’.
A small ceramic capacitor should be placed in parallel with
ROCSET to smooth the voltage across ROCSET in the
presence of switching noise on the input voltage.
Application Guidelines
Layout Considerations
As in any high frequency switching converter, layout is very
important. Switching current from one power device to
another can generate voltage transients across the
impedances of the interconnecting bond wires and circuit
traces. These interconnecting impedances should be
minimized by using wide, short printed circuit traces. The
critical components should be located as close together as
possible using ground plane construction or single point
grounding.
Figure 5 shows the critical power components of the
converter. To minimize the voltage overshoot the
interconnecting wires indicated by heavy lines should be
part of ground or power plane in a printed circuit board. The
components shown in Figure 6 should be located as close
together as possible. Please note that the capacitors CIN
and CO each represent numerous physical capacitors.
Locate the HIP6012 within 3 inches of the MOSFETs, Q1
and Q2. The circuit traces for the MOSFETs’ gate and
source connections from the HIP6012 must be sized to
handle up to 1A peak current.
VIN
HIP6012
UGATE
PHASE
LGATE
PGND
Q1 LO
VOUT
CIN
Q2 D2
CO
RETURN
FIGURE 5. PRINTED CIRCUIT BOARD POWER AND
GROUND PLANES OR ISLANDS
Figure 6 shows the circuit traces that require additional
layout consideration. Use single point and ground plane
construction for the circuits shown. Minimize any leakage
current paths on the SS PIN and locate the capacitor, CSS
close to the SS pin because the internal current source is
only 10µA. Provide local VCC decoupling between VCC and
GND pins. Locate the capacitor, CBOOT as close as practical
to the BOOT and PHASE pins.
BOOT
CBOOT
D1
HIP6012
PHASE
SS
+12V
CSS
GND
VCC
CVCC
+VIN
Q1 LO
VOUT
Q2 CO
FIGURE 6. PRINTED CIRCUIT BOARD SMALL SIGNAL
LAYOUT GUIDELINES
Feedback Compensation
Figure 7 highlights the voltage-mode control loop for a
synchronous-rectified buck converter. The output voltage
(Vout) is regulated to the Reference voltage level. The error
amplifier (Error Amp) output (VE/A) is compared with the
oscillator (OSC) triangular wave to provide a pulse-width
modulated (PWM) wave with an amplitude of VIN at the
PHASE node. The PWM wave is smoothed by the output filter
(LO and CO).
The modulator transfer function is the small-signal transfer
function of Vout/VE/A. This function is dominated by a DC
Gain and the output filter (LO and CO), with a double pole
break frequency at FLC and a zero at FESR. The DC Gain of
the modulator is simply the input voltage (VIN) divided by the
peak-to-peak oscillator voltage VOSC.
2-157

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部品番号部品説明メーカ
HIP6011

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

Intersil Corporation
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HIP6013

Buck Pulse-Width Modulator (PWM) Controller

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HIP6014

Buck and Synchronous-Rectifier (PWM) Controller and Output Voltage Monitor

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