hip6018cb Intersil Corporation, hip6018cb Datasheet

hip6018cb

Manufacturer Part Number

hip6018cb

Description

Advanced Pwm And Dual Linear Power Control

Manufacturer

Intersil Corporation

Datasheet

1.HIP6018CB.pdf (14 pages)

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Advanced PWM and Dual Linear Power

Control

The HIP6018 provides the power control and protection for

three output voltages in high-performance microprocessor

and computer applications. The IC integrates a PWM

controllers, a linear regulator and a linear controller as well

as the monitoring and protection functions into a single

package. The PWM controller regulates the microprocessor

core voltage with a synchronous-rectified buck converter.

The linear controller regulates power for the GTL bus and

the linear regulator provides power for the clock driver circuit.

The HIP6018 includes an Intel-compatible, TTL 5-input

digital-to-analog converter (DAC) that adjusts the core PWM

output voltage from 2.1V

and from 1.8V

reference and voltage-mode control provide ±1% static

regulation. The linear regulator uses an internal pass device

to provide 2.5V±2.5%. The linear controller drives an

external N-channel MOSFET to provide 1.5V±2.5%.

The HIP6018 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 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 over-

current function monitors the output current by using the

voltage drop across the upper MOSFET’s r

eliminating the need for a current sensing resistor.

Ordering Information

HIP6018CB

HIP6018EVAL1

PART NUMBER

to 2.05V

Evaluation Board

TEMP. RANGE

0 to 70

(

224

to 3.5V

in 0.05V steps. The precision

24 Ld SOIC

Data Sheet

PACKAGE

in 0.1V increments

DS(ON)

M24.3

PKG.

NO.

CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.

1-888-INTERSIL or 321-724-7143

Features

• Provides 3 Regulated Voltages

• Drives N-Channel MOSFETs

• Operates from +3.3V, +5V and +12V Inputs

• Simple Single-Loop PWM Control Design

• Fast Transient Response

• Excellent Output Voltage Regulation

• TTL-compatible 5-Bit Digital-to-Analog Core Output

• Power-Good Output Voltage Monitor

• Microprocessor Core Voltage Protection Against Shorted

• Over-Voltage and Over-Current Fault Monitors

• Small Converter Size

Applications

• Full Motherboard Power Regulation for Computers

• Low-Voltage Distributed Power Supplies

Pinout

- Microprocessor Core, Clock and GTL Power

- Voltage-Mode Control

- High-Bandwidth Error Amplifier

- Full 0% to 100% Duty Ratios

- Core PWM Output: ±1% Over Temperature

- Other Outputs: ±2.5% Over Temperature

Voltage Selection

- Wide Range . . . . . . . . . . . . . . . . . . . 1.8V

- 0.1V Steps . . . . . . . . . . . . . . . . . . . . 2.1V

- 0.05V Steps . . . . . . . . . . . . . . . . . . 1.8V

MOSFET

- Does Not Require Extra Current Sensing Element,

- Constant Frequency Operation

- 200kHz Free-Running Oscillator; Programmable from

Uses MOSFET’s r

50kHz to over 1MHz

PGOOD

FAULT

April 1999

VID4

VID3

VID2

VID1

VID0

VIN2

VCC

FB2

Intersil (and design) is a trademark of Intersil Americas Inc.

DS(ON)

HIP6018 (SOIC)

TOP VIEW

UGATE1

PHASE1

LGATE1

PGND

OCSET1

VSEN1

FB1

COMP1

FB3

DRIVE3

GND

VOUT2

HIP6018

FN4497.1

to 2.05V

to 3.5V

Related parts for hip6018cb

hip6018cb Summary of contents

Page 1

... MOSFET’s r eliminating the need for a current sensing resistor. Ordering Information TEMP. RANGE o PART NUMBER ( C) PACKAGE HIP6018CB SOIC HIP6018EVAL1 Evaluation Board 224 Features • Provides 3 Regulated Voltages - Microprocessor Core, Clock and GTL Power • Drives N-Channel MOSFETs • ...

Page 2

Block Diagram - + 225 HIP6018 FIGURE 1. ...

Page 3

Simplified Power System Diagram +5V IN +3. OUT2 V OUT3 Typical Application +12V IN + +3. OUT2 2.5V C OUT2 Q3 V OUT3 1.5V C OUT3 226 HIP6018 LINEAR REGULATOR PWM1 CONTROLLER HIP6018 ...

Page 4

Absolute Maximum Ratings Supply Voltage .+15V CC ...

Page 5

Electrical Specifications Recommended Operating Conditions, Unless Otherwise Noted. Refer to Figures 1, 2 and 3 (Continued) PARAMETER Under-Voltage Hysteresis DRIVE3 Source Current PWM CONTROLLER ERROR AMPLIFIER DC Gain Gain-Bandwidth Product Slew Rate PWM CONTROLLER GATE DRIVER Upper Drive Source Upper ...

Page 6

Functional Pin Description VSEN1 (Pin 19) This pin is connected to the PWM converter’s output voltage. The PGOOD and OVP comparator circuits use this signal to report output voltage status and for over voltage protection. OCSET1 (Pin 20) Connect a ...

Page 7

VIN2 (Pin 12) This pin supplies power to the internal regulator. Connect this pin to a suitable 3.3V source. Additionally, this pin is used to monitor the 3.3V supply. If, following a startup cycle, the voltage drops below 2.05V (typically), ...

Page 8

PWM output disables all converters and drives the FAULT pin to VCC. LUV OVER CURRENT LATCH S Q OC1 S R 0.15V + COUNTER - POR OV ...

Page 9

MOSFET switching. The over-current function will trip at a peak inductor current (I determined by: PEAK SET OCSET I = ---------------------------------------------------- - PEAK OVER-CURRENT TRIP: V > SET (i ...

Page 10

The soft-start function controls the output voltage rate of rise to limit the current surge at start-up. The soft-start interval is programmed by the soft-start capacitor faster soft-start interval increases the peak surge current. The peak surge current ...

Page 11

OSC DRIVER PWM COMP ∆ V OSC - DRIVER + E ERROR AMP REFERENCE DETAILED FEEDBACK COMPENSATION COMP - + HIP6018 REFERENCE FIGURE 11. VOLTAGE-MODE BUCK CONVERTER COMPENSATION DESIGN ...

Page 12

PWM Output Capacitors Modern microprocessors produce transient load rates above 10A/ns. High frequency capacitors initially supply the transient and slow the current load rate seen ...

Page 13

Input Capacitor Selection The important parameters for the bulk input capacitor are the voltage rating and the RMS current rating. For reliable operation, select the bulk capacitor with voltage and current ratings above the maximum input voltage and largest RMS ...

Page 14

... 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, software 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. However, no responsibility is assumed by Intersil or its subsidiaries for its use ...

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