Intersil Corporation HIP6019B Datasheet

HIP6019B

Data Sheet May 1999 File Number

Advanced Dual PWM and Dual Linear
Power Control

The HIP6019B provides the power control and protection for
four output voltages in high-perf ormance microprocessor and
computer applications. The IC integrates two PWM
controllers, a linear regulator and a linear controller as well as
the monitoring and protection functions into a single 28 lead
SOIC package. One PWM controller regulates the
microprocessor core voltage with a synchronous-rectified
buckconv erter ,whilethesecondPWMcontroller supplies the
computer’s 3.3V pow er with a standard b uck converter. The
linear controller regulates power for the GTL bus and the
linear regulator provides power for the clock driver circuits.

The HIP6019B includes an Intel-compatible, TTL 5-input
digital-to-analog converter (DAC) that adjusts the core PWM
output voltage from 2.1VDC to 3.5VDC in 0.1V increments
and from 1.3VDC to 2.05VDC in 0.05V steps. The precision
reference and voltage-mode control provide 1% static
regulation. The second PWM controller is user-adjustable for
output levels between 3.0V and 3.5V with ±2% accuracy. The
adjustable linear regulator uses an internal pass device to
provide 2.5V ±2.5%. The adjustable linear controller drives an
external N-Channel MOSFET to provide 1.5V ±2.5%.

The HIP6019B monitors all the output voltages. A single
Power Good signal is issued when the core is within 10% of
the DAC setting and the other levels are above their under­voltage 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
controller’s over-current functions monitor the output current
by sensing the voltage drop across the upper MOSFET’s
r

, eliminating the need for a current sensing resistor.

DS(ON)

Pinout

HIP6019B

(SOIC)

TOP VIEW

28
27
26
25
24
23
22
21
20
19
18
17
16
15

VCC
UGATE1
PHASE1
LGATE1
PGND
OCSET1
VSEN1
FB1
COMP1
FB3
GATE3
GND
VOUT4
VSEN2

UGATE2
PHASE2

VID4
VID3
VID2
VID1
VID0

PGOOD

OCSET2

FB2

COMP2

SS

FAULT/RT

FB4

1
2
3
4
5
6
7
8

9
10
11
12
13
14

4587

Features

• Provides 4 Regulated Voltages

- Microprocessor Core, I/O, Clock Chip and GTL Bus

• Drives N-Channel MOSFETs

• Operates from +5V and +12V Inputs

• Simple Single-Loop Control Designs

- Voltage-Mode PWM Control

• Fast Transient Response

- High-Bandwidth Error Amplifiers

- Full 0% to 100% Duty Ratios

• Excellent Output Voltage Regulation

- Core PWM Output: ±1% Over Temperature

- I/O PWM Output: ±2% Over Temperature

- Other Outputs: ±2.5% Over Temperature

• TTL-Compatible 5-Bit Digital-to-Analog Core Output
Voltage Selection

- Wide Range . . . . . . . . . . . . . . . . . . . 1.3V

DC

to 3.5V

- 0.1V Steps . . . . . . . . . . . . . . . . . . . . 2.1VDC to 3.5V

- 0.05V Steps . . . . . . . . . . . . . . . . . . 1.3VDC to 2.05V

• Power-Good Output Voltage Monitor

• Microprocessor Core Voltage Protection Against Shorted
MOSFET

• Over-Voltage and Over-Current Fault Monitors

- Does Not Require Extra Current Sensing Element,

Uses MOSFET’s r

DS(ON)

• Small Converter Size

- Constant Frequency Operation

- 200kHz Free-Running Oscillator; Programmable from

50kHz to 1MHz

Applications

•

Full Motherboard Power Regulation for Computers

•

Low-Voltage Distributed Power Supplies

Ordering Information

PART NUMBER TEMP. (oC) PACKAGE PKG. NO.

HIP6019BCB 0 to 70 28 Ld SOIC M28.3

DC
DC
DC

2-267

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

Block Diagram

HIP6019B

VCC

OCSET1

VSEN1

OCSET2

POWER-ON

RESET (POR)

200µA

+

110%

LUV

-

PGOOD

+

90%

DRIVE

LOWER

PGND

TTL D/A

VCC

GND

CONVERTER

DACOUT

VID4

VID3

4V

VID2

VID1

VID0

FB1 COMP1

SS

FIGURE 1.

(DAC)

11µA

UGATE1

PHASE1

VCC

DRIVE1

GATE

INHIBIT

-

+

OC1

-

-

+

115%

OV

SOFT-

LOGIC

START

OC

200µA

AND FAULT

+

FAULT

CONTROL

+

-

VCC

PWM1

PWM

-

COMP1

AMP1

ERROR

LGATE1

FB3

LINEAR

UNDER-

VOLTAGE

0.3V

-

+

GATE3

-

+

-

+

VSEN2

2-268

FAULT / RT

VCC

DRIVE2

GATE2

OC2

-

+

PHASE2

-

INHIBIT

GATE

+

PWM2

CONTROL

PWM

COMP2

-

FB2

COMP2

+

AMP2

ERROR

+

1.26V

-

+

VSEN2

+

2.5V

-

+

-

-

+

0.25A

VOUT4

OC4

FB4

-

+

1.26V

+

-

+

OSCILLATOR

4.3V

-

+

Simplified Power System Diagram

+5V

IN

V

OUT2

HIP6019B

PWM2

CONTROLLER

HIP6019B

PWM1

CONTROLLER

V

OUT1

V

OUT3

V

OUT4

Typical Application

+12V

IN

+5V

IN

V

OUT2

3.0V TO 3.5V

C

L

OUT2

OUT2

C

CR2

IN

Q3

OCSET2

UGATE2
PHASE2

LINEAR LINEAR

CONTROLLER REGULATOR

FIGURE 2.

VCC

OCSET1

PGOOD

UGATE1
PHASE1

LGATE1
PGND

Q1

Q2

CR1

L

OUT1

C

OUT1

POWERGOOD

V

OUT1

1.3V TO 3.5V

V

1.5V

V

OUT4

2.5V

OUT3

C

Q4

OUT3

C

OUT4

2-269

VSEN2

FB2

COMP2

GATE3

FB3

VOUT4

FB4

HIP6019B

GND

FIGURE 3.

VSEN1

FB1

COMP1

FAULT / RT

VID0
VID1
VID2
VID3
VID4

SS

C

SS

HIP6019B

Absolute Maximum Ratings Thermal Information

Supply Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +15V

PGOOD, R T/FA ULT, and GATE Voltage. . . . GND - 0.3V to VCC + 0.3V

Input, Output or I/O Voltage. . . . . . . . . . . . . . . . . . GND -0.3V to 7V

ESD Classification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Class 2

Operating Conditions

Supply Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . +12V ±10%

Ambient Temperature Range. . . . . . . . . . . . . . . . . . . . . 0oC to 70oC

Junction Temperature Range. . . . . . . . . . . . . . . . . . . . 0oC to 125oC

CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operationofthe
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.

Refer to Figures 1, 2 and 3

PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNITS

VCC SUPPLY CURRENT

Nominal Supply I

POWER-ON RESET

Rising VCC Threshold V
Falling VCC Threshold V
Rising V

OSCILLATOR

Free Running Frequency RT = OPEN 185 200 215 kHz
Total Variation 6kΩ < RT to GND < 200kΩ -15 - +15 %
Ramp Amplitude ∆V

REFERENCE AND DAC

DAC(VID0-VID4) Input Low Voltage - - 0.8 V
DAC(VID0-VID4) Input High Voltage 2.0 - - V
DACOUT Voltage Accuracy -1.0 - +1.0 %
Reference Voltage

(Pin FB2, FB3, and FB4)

LINEAR REGULATOR

Regulation 10mA < I
Under-Voltage Level FB4
Under-Voltage Hysteresis -6- %
Over-Current Protection 180 230 - mA
Over-Current Protection During Start-Up C

LINEAR CONTROLLER

Regulation VSEN3 = GATE3 -2.5 - 2.5 %
Under-Voltage Level FB3
Under-Voltage Hysteresis -6- %

Threshold - 1.25 - V

OCSET1

CC

OSC

UGATE1, GATE2, GATE3, LGATE1, and
VOUT4 Open

OCSET
OCSET

RT = Open - 1.9 - V

FB4 Rising - 75 87 %

UV

Voltage < 4V 560 700 - mA

SS

FB3 Rising - 75 87 %

UV

Thermal Resistance (Typical, Note 1) θJA (oC/W)

SOIC Package. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

SOIC Package (with 3 in2 of copper) . . . . . . . . . . . 50

Maximum Junction Temperature (Plastic Package) . . . . . . . .150oC

Maximum Storage Temperature Range. . . . . . . . . . -65oC to 150oC

Maximum Lead Temperature (Soldering 10s) . . . . . . . . . . . . .300oC

(SOIC - Lead Tips Only)

-10- mA

= 4.5V 8.6 - 10.4 V
= 4.5V 8.2 - 10.2 V

1.240 1.265 1.290 V

< 150mA -2.5 - 2.5 %

VOUT4

P-P

2-270

HIP6019B

Electrical Specifications Recommended Operating Conditions, Unless Otherwise Noted.

Refer to Figures 1, 2 and 3 (Continued)

PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNITS

PWM CONTROLLER ERROR AMPLIFIERS

DC Gain -88- dB
Gain-Bandwidth Product GBWP - 15 - MHz
Slew Rate SR COMP = 10pF - 6 - V/µs

PWM CONTROLLER GATE DRIVERS

Drive1 (and 2) Source I
Drive1 (and 2) Sink R
Lower Gate Source I
Lower Gate Sink R

UGATE

UGATEVGATE-PHASE

LGATE

LGATEVGATE

VCC = 12V, V

VCC = 12V, V

= 1V - 1.4 3.0 Ω

PROTECTION

Over-Voltage Trip VSEN1 Rising 112 115 118 %

V

OUT1

Over-Voltage Trip VSEN2 Rising 4.1 4.3 4.5 V

V

OUT2

VSEN2 Input Resistance -70- kΩ
FAULT Sourcing Current I
OCSET1(and 2) Current Source I
Soft-Start Current I

OVP

OCSET

SS

V

FAULT/RT

V

OCSET

= 10.0V 10 14 - mA

= 4.5V

Chip Shutdown Soft-Start Threshold - - 1.0 V

POWER GOOD

Upper Threshold VSEN1 Rising 108 - 110 %

V

OUT1

Under-Voltage VSEN1 Rising 92 - 94 %

V

OUT1

Hysteresis Upper/Lower Threshold - 2 - %

V

OUT1

Under-Voltage VSEN2 Rising 2.45 2.55 2.65 V

V

OUT2

Under-Voltage Hysteresis - 100 - mV

V

OUT2

PGOOD Voltage Low V

PGOODIPGOOD

= -4mA - - 0.5 V

UGATE1

(or V

) = 6V - 1 - A

GATE2

= 1V - 1.7 3.5 Ω

= 1V - 1 - A

LGATE

DC

170 200 230 µA

-11- µA

Typical Performance Curves

1000

100

RESISTANCE (kΩ)

10

RT PULLUP
TO +12V

RT PULLDOWN TO V

10 100 1000

SWITCHING FREQUENCY (kHz)

FIGURE 4. RT RESISTANCE vs FREQUENCY FIGURE 5. BIAS SUPPLY CURRENT vs FREQUENCY

2-271

SS

140

C
V

120

100

80

(mA)

60

CC

I

40

20

100 200 300 400 500 600 700 800 900 1000

= C

UGATE1

= 12V, VIN = 5V

VCC

= C

UGATE2

SWITCHING FREQUENCY (kHz)

LGATE1

= C

GATE

C

C

C

C

GATE

GATE

GATE

GATE

= 4800pF

= 3600pF

= 1500pF

= 660pF