hip6602a Intersil Corporation, hip6602a Datasheet

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hip6602a

Manufacturer Part Number
hip6602a
Description
Microprocessor Core Voltage Regulator Multiphase Buck Pwm Controller
Manufacturer
Intersil Corporation
Datasheet

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Microprocessor CORE Voltage Regulator
Multi-Phase Buck PWM Controller
The HIP6311A Multi-Phase Buck PWM control IC together
with HIP6601A, HIP6602A or HIP6603A companion gate
drivers form a precision voltage regulation system for
advanced microprocessors. The HIP6311A controls
microprocessor core voltage regulation by driving 2 to 4
synchronous-rectified buck channels in parallel. The multi-
phase buck topology takes advantage of interleaving phases
to increase ripple frequency and reduce input and output
ripple currents. Resulting in fewer components, reduced
component ratings, lower power dissipation, and smaller
implementation area.
The HIP6311A control IC features a 5 bit digital-to-analog
converter (DAC) that adjusts the core output voltage from
1.100V to 1.850V with an unsurpassed system accuracy of
±0.5% over temperature. The HIP6311A uses a lossless
current sensing approach in which the voltage developed
across the on-resistance of the lower MOSFETs during
conduction is sampled. Current sensing provides the
required signals for precision droop, channel-current
balancing, load sharing, and over-current protection.
Another feature of this control IC is the PGOOD monitor
which is held low until the core voltage increases to within
8% of the programmed voltage. An over-voltage condition is
detected when the output voltage exceeds 115% of the
programmed VID. This results in the converter shutting down
and PGOOD being pulled low. During an under-voltage
condition (output voltage 10% below the programmed VID),
PGOOD transitions low, but the converter continues to
operate.
Ordering Information
HIP6311ACB
HIP6311ACBZ
(See Note)
HIP6311ACBZA
(See Note)
*Add “-T” suffix to part number for tape and reel packaging.
NOTE: Intersil Pb-free products employ special Pb-free material
sets; molding compounds/die attach materials and 100% matte tin
plate termination finish, which is compatible with both SnPb and
Pb-free soldering operations. Intersil Pb-free products are MSL
classified at Pb-free peak reflow temperatures that meet or exceed
the Pb-free requirements of IPC/JEDEC J Std-020B.
PART NUMBER
TEMP. (
0 to 70
0 to 70
0 to 70
®
o
1
C)
20 Ld SOIC
20 Ld SOIC
(Pb-free)
20 Ld SOIC
(Pb-free)
PACKAGE
Data Sheet
M20.3
M20.3
M20.3
PKG. NO.
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 321-724-7143
Features
• Precision CORE Voltage Regulation
• Microprocessor Voltage Identification Input
• R
• Fast Transient Response
• Digital Soft Start
• Over Current Protection
• Selection of 2, 3, or 4 Phase Operation
• 50kHz to 1.5MHz Switching Frequency
• Pb-free available
Applications
• Desktop Motherboards
• Voltage Regulator Modules
• Servers and Workstations
Pinout
- ±0.5% System Accuracy Over Temperature
- 5-Bit VID Input
- 1.100V to 1.850V in 25mV Steps
- Programmable Droop Voltage
- Accurate Channel Current Balancing
- Loss less Current Sampling
- Low-Cost Implementation
DS(on)
Current Sensing
Copyright © Intersil Americas Inc. 2001, 2004, All Rights Reserved
July 2004
FS/DIS
COMP
VSEN
VID4
VID3
VID2
VID1
VID0
GND
FB
|
Intersil and Design is a trademark of Intersil Americas Inc.
10
1
2
3
4
5
6
7
8
9
HIP6311A (SOIC)
TOP VIEW
20
19
18
17
16
15
14
13
12
11
V
PGOOD
PWM4
ISEN4
ISEN1
PWM1
PWM2
ISEN2
ISEN3
PWM3
HIP6311A
CC
FN9035.1

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hip6602a Summary of contents

Page 1

... Data Sheet Microprocessor CORE Voltage Regulator Multi-Phase Buck PWM Controller The HIP6311A Multi-Phase Buck PWM control IC together with HIP6601A, HIP6602A or HIP6603A companion gate drivers form a precision voltage regulation system for advanced microprocessors. The HIP6311A controls microprocessor core voltage regulation by driving synchronous-rectified buck channels in parallel ...

Page 2

Block Diagram VSEN X 0.9 X1.15 AND FAULT COMP VID0 VID1 VID2 D/A VID3 VID4 FB 2 HIP6311A HIP6311A V PGOOD CC POWER-ON RESET (POR LATCH CLOCK AND S SAWTOOTH GENERATOR + ∑ + OVP - ...

Page 3

Simplified Power System Diagram VSEN PWM 1 PWM 2 HIP6311A PWM 3 PWM 4 VID Functional Pin Description 1 20 VID4 2 19 VID3 3 18 VID2 4 17 VID1 5 16 VID0 6 15 COMP ...

Page 4

Typical Application - 2 Phase Converter Using HIP6601 Gate Drivers +5V COMP VSEN PWM4 PWM3 PGOOD PWM2 VID4 VID3 PWM1 VID2 MAIN CONTROL VID1 HIP6311A VID0 ISEN4 ISEN3 FS/DIS ISEN2 ISEN1 GND 4 HIP6311A HIP6311A +12V BOOT ...

Page 5

Typical Application - 4 Phase Converter Using HIP6602 Gate Drivers FB COMP V VSEN CC ISEN1 PGOOD PWM1 VID4 PWM2 ISEN2 VID3 VID2 MAIN CONTROL VID1 HIP6311A VID0 ISEN3 FS/DIS PWM3 PWM4 GND ISEN4 5 HIP6311A HIP6311A +12V BOOT1 UGATE1 ...

Page 6

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

Page 7

ERROR AMPLIFIER CORRECTION - ∑ PROGRAMMABLE REFERENCE + ∑ DAC - I AVERAGE - + ∑ ∑ CORRECTION FIGURE 1. SIMPLIFIED BLOCK DIAGRAM OF THE HIP6311A VOLTAGE AND CURRENT CONTROL LOOPS FOR ...

Page 8

Correction circuit to the Comparator, reduces the output pulse width of the Comparator to compensate for the detected “above average” current in that channel. Droop Compensation In addition to control of each power ...

Page 9

Figure 3 shows the start-up sequence as initiated by a fast rising 5V supply, V applied to the HIP6311A. Note the CC, short rise to the three state level in PWM 1 output during first 32 PWM cycles. DELAY TIME ...

Page 10

MOSFETs, avoiding a possibly destructive ringing of the capacitors and output inductors. If the conditions that caused the over-voltage still persist, the PWM outputs will be cycled between three state and V clamped to ground, as ...

Page 11

COMP FB SAWTOOTH ERROR GENERATOR AMPLIFIER CORRECTION - + + - DIFFERENCE REFERENCE DAC TO OTHER CHANNELS TO OVER + CURRENT - TRIP COMPARATOR FIGURE 7. SIMPLIFIED FUNCTIONAL BLOCK DIAGRAM SHOWING CURRENT AND VOLTAGE ...

Page 12

In order to fully utilize the output-voltage tolerance range, the output voltage is positioned in the upper half of the range when the output is unloaded and in the ...

Page 13

As discussed previously, the voltage drop across each Q2 transistor at the point in time when current is sampled is r (Q2 The voltage at Q2’s drain, the DSON SAMPLE PHASE node, is applied through the R ...

Page 14

IN LOCATE NEXT TO IC PIN( COMP C T HIP6311A R FB LOCATE NEXT PIN R IN VSEN FIGURE 11. PRINTED CIRCUIT BOARD POWER PLANES AND ISLANDS Component Selection Guidelines Output Capacitor ...

Page 15

Considerations section. With all else fixed, decreasing the inductance could increase the power dissipated in the MOSFETs by 30%. 1.0 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 ...

Page 16

... Intersil Corporation’s quality certifications can be viewed at www.intersil.com/design/quality Intersil products are sold by description only. Intersil Corporation reserves the right to make changes in circuit design and/or specifications at any time without notice. Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be accurate and reliable. ...

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