HIP6304CB INTERSIL [Intersil Corporation], HIP6304CB Datasheet

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HIP6304CB

Manufacturer Part Number
HIP6304CB
Description
Microprocessor CORE Voltage Regulator Multi-Phase Buck PWM Controller
Manufacturer
INTERSIL [Intersil Corporation]
Datasheets

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Microprocessor CORE Voltage Regulator
Multi-Phase Buck PWM Controller
The HIP6304 multi-phase PWM control IC together with its
companion gate drivers, the HIP6601, HIP6602 or HIP6603
and Intersil MOSFETs provides a precision voltage
regulation system for advanced microprocessors.
Multiphase power conversion is a marked departure from
earlier single phase converter configurations previously
employed to satisfy the ever increasing current demands of
modern microprocessors. Multi-phase convertors, by
distributing the power and load current results in smaller and
lower cost transistors with fewer input and output capacitors.
These reductions accrue from the higher effective
conversion frequency with higher frequency ripple current
due to the phase interleaving process of this topology. For
example, a two phase convertor operating at 350kHz will
have a ripple frequency of 700kHz. Moreover, greater
convertor bandwidth of this design results in faster response
to load transients.
Outstanding features of this controller IC include
programmable VID codes from the microprocessor that
range from 1.30V to 2.05V with a system accuracy of 1%.
Pull up currents on these VID pins eliminates the need for
external pull up resistors. In addition “droop” compensation,
used to reduce the overshoot or undershoot of the CORE
voltage, is easily programmed with a single resistor.
Another feature of this controller IC is the PGOOD monitor
circuit which is held low until the CORE voltage increases,
during its Soft-Start sequence, to within 10% of the
programmed voltage. Over-voltage, 15% above programmed
CORE voltage, results in the converter shutting down and
turning the lower MOSFETs ON to clamp and protect the
microprocessor. Under voltage is also detected and results
in PGOOD low if the CORE voltage falls 10% below the
programmed level. Over-current protection reduces the
regulator current to less than 25% of the programmed trip
value. These features provide monitoring and protection for
the microprocessor and power system.
TM
1
1-888-INTERSIL or 321-724-7143
Data Sheet
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
|
Intersil and Design is a trademark of Intersil Corporation.
Features
• AMD Athlon
• Precision Channel Current Sharing
• Precision CORE Voltage Regulation
• Microprocessor Voltage Identification Input
• Fast Transient Recovery Time
• Over Current Protection
• High Ripple Frequency, (Channel Frequency) Times
Ordering Information
Pinout
HIP6304CB
HIP6304CB-T
HIP6304EVAL1
- Loss Less Current Sampling - Uses r
-
- 4-Bit VID Input
- 1.30V to 2.05V in 50mV Steps
- Programmable “Droop” Voltage
Number Channels . . . . . . . . . . . . . . . . . 100kHz to 3MHz
PART NUMBER
1% System Accuracy Over Temperature
March 2000
FS/DIS
COMP
VID3
VID2
VID1
VID0
Compatible Multi-Phase Power Conversion
EN
FB
16 Ld SOIC Tape and Reel
Evaluation Platform
Athlon™ is a trademark of Advanced Micro Devices, Inc.
TEMP. (
1
2
3
4
5
6
7
8
HIP6304 (SOIC)
0 to 70
TOP VIEW
o
C)
|
16 Ld SOIC
Copyright
File Number
PACKAGE
16
15
14
13
12
11
10
9
V
PGOOD
ISEN1
PWM1
PWM2
ISEN2
VSEN
GND
©
CC
DS(ON)
HIP6304
Intersil Corporation 2000
M16.15
PKG. NO.
4840

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HIP6304CB Summary of contents

Page 1

... Fast Transient Recovery Time • Over Current Protection • High Ripple Frequency, (Channel Frequency) Times Number Channels . . . . . . . . . . . . . . . . . 100kHz to 3MHz Ordering Information PART NUMBER TEMP. ( HIP6304CB HIP6304CB SOIC Tape and Reel HIP6304EVAL1 Evaluation Platform Pinout HIP6304 (SOIC) TOP VIEW VID3 1 ...

Page 2

Block Diagram VSEN X 0.9 X1.15 EN COMP VID0 VID1 VID2 VID3 FB Simplified Power System Diagram VSEN PWM 1 HIP6304 PWM 2 VID 2 HIP6304 V PGOOD CC POWER-ON RESET (POR LATCH CLOCK AND S ...

Page 3

Typical Application - Two Phase Converter Using HIP6601 Gate Drivers COMP VSEN PWM2 PGOOD ISEN2 EN VID3 MAIN VID2 CONTROL HIP6304 VID1 PWM1 VID0 FS/DIS ISEN1 GND Typical Application - Two Phase Converter Using a HIP6602 Gate ...

Page 4

ERROR AMPLIFIER CORRECTION - + - + PROGRAMMABLE + REFERENCE DAC - I AVERAGE - + - + CORRECTION FIGURE 1. SIMPLIFIED BLOCK DIAGRAM OF THE HIP6304 VOLTAGE AND CURRENT CONTROL LOOPS FOR A TWO POWER CHANNEL ...

Page 5

Absolute Maximum Ratings Supply Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +7V ...

Page 6

Operation Figure 1 shows a simplified diagram of the voltage regulation and current control loops. Both voltage and current feedback are used to precisely regulate voltage and tightly control output currents, I and the two power channels. ...

Page 7

This voltage rise is initiated by an internal DAC that slowly raises the reference voltage to the error amplifier input. The voltage rise is controlled by the oscillator frequency and the DAC ...

Page 8

Fault Protection The HIP6304 protects the microprocessor and the entire power system from damaging stress levels. Within the HIP6304 both Over-Voltage and Over-Current circuits are incorporated to protect the load and regulator. Over-Voltage The VSEN pin is connected to the ...

Page 9

Current Sensing and Balancing Overview The HIP6304 samples the on-state voltage drop across each synchronous rectifier FET, Q2 indication of the inductor current in that phase, see Figure 7. Neglecting AC effects (to be discussed later), the voltage ...

Page 10

R should be selected to give the desired “droop” voltage at IN the normal full load current 50 A applied through the R resistor ( different full load current if adjusted as under “Over-Current, Selecting R ” above). ...

Page 11

Example: Using the previously given conditions, and For I = 50A Then I = 25.49A SAMPLE As discussed previously, the voltage drop across each Q2 transistor at the point in time when current is sampled is ...

Page 12

Use the remaining printed circuit layers for small signal wiring. The wiring traces from the driver IC to the MOSFET gate and source should be sized to carry at least one ampere of current. Component Selection Guidelines ...

Page 13

SINGLE 0.8 CHANNEL 0.6 2 CHANNEL 0.4 3 CHANNEL 0.2 4 CHANNEL 0 0.1 0.2 0 DUTY CYCLE (V FIGURE 12. RIPPLE CURRENT vs DUTY CYCLE Input Capacitor Selection The important parameters for the bulk input capacitors are the ...

Page 14

Small Outline Plastic Packages (SOIC) N INDEX 0.25(0.010) H AREA E - SEATING PLANE - - 0.10(0.004) 0.25(0.010 NOTES: 1. Symbols are defined in the “MO ...

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