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HIP6021ACB

更新时间： 2024-11-22 22:33:59
品牌 Logo 应用领域
英特矽尔 - INTERSIL 开关光电二极管控制器
页数 文件大小 规格书
16页 189K
描述
Advanced PWM and Triple Linear Power Controller

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HIP6021ACB 数据手册

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HIP6021A  
Data Sheet  
November 1999  
File Number 4793  
Advanced PWM and Triple Linear Power  
Controller  
Features  
• Provides 4 Regulated Voltages  
The HIP6021A provides the power control and protection for  
four output voltages in high-performance, graphics intensive  
microprocessor and computer applications. The IC  
integrates a voltage-mode PWM controller and three linear  
controllers, as well as the monitoring and protection  
functions into a 28 lead SOIC package.  
- Microprocessor Core, AGP Bus, Memory, and GTL Bus  
Power  
• Drives N-Channel MOSFETs  
• Linear Regulator Drives Compatible with both MOSFET  
and Bipolar Series Pass Transistors  
• Fixed or Externally Resistor-Adjustable Linear Outputs  
The synchronous-rectified buck converter includes an Intel-  
compatible, TTL 5-input digital-to-analog converter (DAC)  
• Simple Single-Loop Control Design  
- Voltage-Mode PWM Control  
that adjusts the core PWM output voltage from 1.3V  
to  
• Fast PWM Converter Transient Response  
- High-Bandwidth Error Amplifier  
- Full 0% to 100% Duty Ratio  
DC  
in 0.1V  
2.05V  
in 0.05V steps and from 2.1V  
to 3.5V  
DC  
DC DC  
increments. The precision reference and voltage-mode  
control provide ±1% static regulation. A TTL-compatible  
signal applied to the SELECT pin dictates which method of  
control is used for the AGP bus power: a low state results in  
linear control of the AGP bus to 1.5V, while a high state  
transitions the output through a linearly controlled softstart to  
3.3V, followed by full enhancement of the external MOSFET  
to pass the input voltage. The other two linear regulators  
provide fixed output voltages of 1.5V GTL bus power and  
1.8V power for the North/South Bridge core and/or cache  
memory. These levels are user-adjustable by means of an  
external resistor divider and pulling the FIX pin low. All linear  
controllers can employ either N-Channel MOSFETs or  
bipolar NPNs for the pass transistor.  
• Excellent Output Voltage Regulation  
- Core PWM Output: ±1% Over Temperature  
- Other Outputs: ±3% Over Temperature  
• TTL-Compatible 5-Bit DAC Core Output Voltage Selection  
- Shutdown Feature Removed When All Inputs High  
- Wide Range 1.3V  
DC  
to 3.5V  
DC  
• Power-Good Output Voltage Monitor  
• Over-Voltage and Over-Current Fault Monitors  
- Switching Regulator Does Not Require Extra Current  
Sensing Element, Uses Upper MOSFET’s r  
DS(ON)  
• Small Converter Size  
- Constant Frequency Operation  
- 200kHz Free-Running Oscillator; Programmable From  
50kHz to Over 1MHz  
- Small External Component Count  
The HIP6021A monitors all the output voltages. A single  
Power Good signal is issued when the core is within ±10% of  
the DAC setting and all other outputs are above their under-  
voltage levels. Additional built-in over-voltage protection for  
the core output uses the lower MOSFET to prevent output  
voltages above 115% of the DAC setting. The PWM  
Applications  
•
Motherboard Power Regulation for Computers  
controller’s over-current function monitors the output current  
by using the voltage drop across the upper MOSFET’s  
Pinout  
HIP6021A (SOIC)  
TOP VIEW  
r
.
DS(ON)  
1
2
3
4
5
6
7
8
9
28  
27  
26  
25  
24  
23  
22  
21  
20  
19  
18  
DRIVE2  
FIX  
VCC  
Ordering Information  
UGATE  
PHASE  
LGATE  
PGND  
OCSET  
VSEN1  
FB  
VID4  
TEMP.  
PKG.  
NO.  
o
VID3  
PART NUMBER RANGE ( C)  
PACKAGE  
28 Ld SOIC  
VID2  
HIP6021ACB  
0 to 70  
M28.3  
VID1  
HIP6021EVAL1  
Evaluation Board  
VID0  
PGOOD  
SD  
COMP  
VSEN3  
DRIVE3  
VSEN2  
SELECT  
10  
11  
SS 12  
FAULT/RT 13  
VSEN4 14  
17 GND  
16 VAUX  
15 DRIVE4  
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.  
1-888-INTERSIL or 407-727-9207 | Copyright © Intersil Corporation 1999  
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