TDA21301

TDA21301 Datasheet

DS-CoreControl-TDA21301

Part	Datasheet
TDA21301	TDA21301 (pdf)

PDF Datasheet Preview
Version , Aug 2004 Datasheet DS-CoreControl-TDA21301 TDA21301 Authors: Edward Chang Published by Infineon Technologies AG Discrete & Power Management CoreControl TM N e v e r s t o p t h i n k i n g. Page 1 of 25 DS-CoreControl-TDA21301 Contents: Pinout Drawing Pinout General Block Reference Circuit Absolute Maximum Rating 6 Thermal 7 Electrical Characteristic 8 Operating 9 VRD10.x VID Table 10 Application Information 11 Voltage Current Load Fault Phase Setting and Converter Start Current Sensing Proportional Current Voltage Hump DAC Offset Voltage & Droop Protection and SS Design Procedure Suggestion 17 Design 18 Layout Guide 22 Outline CoreControl TM Page 2 of 25 DS-CoreControl-TDA21301 Multi-Phase PWM Controller for CPU Core Power Supply Features : P-TSSOP-28 • Multi-Phase PWM Conversion with Automatically Phase Selection • VRD10.X Compliant • Active Droop Compensation For Fast Load Response • Smooth VCORE Voltage Transition during the Dynamic VIDs • Inductive DCR Current Sense Technique • Hiccup Mode Over Current Protection • Programmable Switching Frequency 50kHz ~ 400kHz per Phase , Under Voltage Lockout, and Soft-Start • High Output Ripple Frequency times numbers of working Channels Application : • Intel Processor Voltage Regulator VRM10.X • Low Output Voltage High Output Current DC-DC Converters • Voltage Regulator Modules Type Package Marking TDA21301 P-TSSOP-28 21301 Ordering Code Q67042-S4228 Pinout Drawing: Frequency VS RRT Top View 1 VID4 2 VID3 3 VID2 4 VID1 5 VID0 6 VID125 7 SGND 8 FB 9 COMP 10 PGOOD 11 DVD 12 SS 13 RT 14 VOSS VCC 28 PWM1 27 PWM2 26 PWM3 25 PWM4 24 CSP4 23 CSP2 22 CSP3 21 CSP1 20 GND 19 ADJ 18 NC 17 CSN 16 IMAX 15 CoreControl TM Page 3 of 25 DS-CoreControl-TDA21301 Pinout Description: Number 1 2 3 4 5 6 7 8 9 10 11 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 Name VID4 VID3 VID2 VID1 VID0 VID125 SGND FB COMP PGOOD DVD RT VOSS IMAX CSN NC ADJ GND CSP1 CSP3 CSP2 CSP4 PWM4 PWM3 PWM2 PWM1 VCC Voltage Identification DAC Input. Internally pull up to 1.2V. Voltage Identification DAC Input. Internally pull up to 1.2V. Voltage Identification DAC Input. Internally pull up to 1.2V. Voltage Identification DAC Input. Internally pull up to 1.2V. Voltage Identification DAC Input. Internally pull up to 1.2V. Voltage Identification DAC Input. Internally pull up to 1.2V. The negative input pin of the differential converter output voltage sense amplifier Internal error amplifier inverting input pin Output of the error amplifier and input of the PWM comparators Open drain power good signal output pin Connect the external voltage divider to program the controller under voltage lockout based on the input voltage of the power stage. Soft-Start. Connect with a capacitor to GND to set the Soft-Start Interval. Pulling down this pin below 1V shall shut the converter down. Connect a resistor to GND to set the channel switching frequency Connect a resistor to GND to set the initial offset voltage. Connect a resistor to GND to set the over current level. The negative input pin of the differential current sense amplifier connects to output voltage No connect a resistor to GND to set the Droop Voltage. Ground pin of the IC Differential current sense positive input pin connects to switching node. Differential current sense positive input pin connects to switching node. Differential current sense positive input pin connects to switching node. Differential current sense positive input pin connects to switching node. Channel 4 PWM output pin Channel 3 PWM output pin Channel 2 PWM output pin Channel 1 PWM output pin IC power supply pin connects to 5V CoreControl TM Page 4 of 25 DS-CoreControl-TDA21301 TDA21301 is a multi-phase DC-DC buck converter controller integrated all control functions for the next generation GHz CPU voltage regulator. TDA21301 automatically controls 2 to 4 interleaved buck switching power stage operation. The multi-phase architecture is able to provide high output current with lower power dissipation on the switching devices and minimizing the input ripple current and output ripple voltage. The equivalent high operation frequency optimizes the voltage regulator design for better transient response and thermal performance. TDA21301 utilizes the DCR of the output inductors in every channel as the current sense element. The differential current sense in every channel results precious channel current information to the controller for good droop adjustment, channel current balance, channel switching devices thermal balance and over current protection. The offset error caused by individual differential current sense amplifier can be eliminated due to that the multiplexer is use to select the different channel current sense signals with single differential current sense amplifier. Block Diagram VID0 VID1 VID2 VID3 VID4 VID125 VID DAC & Step Control VOSS Offset Setting OVP Setting PG Setting VCORE FB COMP PGOOD VCC DVD IMAX Power On Reset Oscillatior & Sawtooth PWM Logic I PWM CMP PWM Logic I PWM CMP PWM Logic I PWM CMP OCP Setting

PDF Datasheet Preview

Version , Aug 2004

Datasheet

DS-CoreControl-TDA21301

TDA21301

Authors:

Edward Chang

Published by Infineon Technologies AG

Discrete & Power Management

CoreControl TM

N e v e r s t o p t h i n k i n g.

Page 1 of 25

DS-CoreControl-TDA21301

Contents:

Pinout Drawing Pinout General Block Reference Circuit Absolute Maximum Rating 6 Thermal 7 Electrical Characteristic 8 Operating 9 VRD10.x VID Table 10 Application Information 11

Voltage Current Load Fault Phase Setting and Converter Start Current Sensing Proportional Current Voltage Hump DAC Offset Voltage & Droop Protection and SS Design Procedure Suggestion 17 Design 18 Layout Guide 22 Outline

CoreControl TM

Page 2 of 25

DS-CoreControl-TDA21301

Multi-Phase PWM Controller for CPU Core Power Supply

Features :

P-TSSOP-28
• Multi-Phase PWM Conversion with Automatically Phase Selection
• VRD10.X Compliant
• Active Droop Compensation For Fast Load Response
• Smooth VCORE Voltage Transition during the Dynamic VIDs
• Inductive DCR Current Sense Technique
• Hiccup Mode Over Current Protection
• Programmable Switching Frequency 50kHz ~ 400kHz per Phase , Under Voltage

Lockout, and Soft-Start
• High Output Ripple Frequency times numbers of working Channels

Application :
• Intel Processor Voltage Regulator VRM10.X
• Low Output Voltage High Output Current DC-DC Converters
• Voltage Regulator Modules

Type

Package Marking

TDA21301 P-TSSOP-28 21301
Ordering Code Q67042-S4228

Pinout Drawing:

Frequency VS RRT

Top View
1 VID4 2 VID3 3 VID2 4 VID1 5 VID0 6 VID125 7 SGND 8 FB 9 COMP 10 PGOOD 11 DVD 12 SS 13 RT 14 VOSS

VCC 28 PWM1 27 PWM2 26 PWM3 25 PWM4 24 CSP4 23 CSP2 22 CSP3 21 CSP1 20

GND 19 ADJ 18 NC 17 CSN 16 IMAX 15

CoreControl TM

Page 3 of 25

DS-CoreControl-TDA21301

Pinout Description:

Number 1 2 3 4 5 6 7 8 9 10 11
13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28

Name VID4 VID3 VID2 VID1 VID0 VID125 SGND FB COMP PGOOD DVD

RT VOSS IMAX CSN

NC ADJ GND CSP1 CSP3 CSP2 CSP4 PWM4 PWM3 PWM2 PWM1 VCC

Voltage Identification DAC Input. Internally pull up to 1.2V. Voltage Identification DAC Input. Internally pull up to 1.2V. Voltage Identification DAC Input. Internally pull up to 1.2V. Voltage Identification DAC Input. Internally pull up to 1.2V. Voltage Identification DAC Input. Internally pull up to 1.2V. Voltage Identification DAC Input. Internally pull up to 1.2V. The negative input pin of the differential converter output voltage sense amplifier Internal error amplifier inverting input pin Output of the error amplifier and input of the PWM comparators Open drain power good signal output pin Connect the external voltage divider to program the controller under voltage lockout based on the input voltage of the power stage. Soft-Start. Connect with a capacitor to GND to set the Soft-Start Interval. Pulling down this pin below 1V shall shut the converter down. Connect a resistor to GND to set the channel switching frequency Connect a resistor to GND to set the initial offset voltage. Connect a resistor to GND to set the over current level. The negative input pin of the differential current sense amplifier connects to output voltage No connect a resistor to GND to set the Droop Voltage. Ground pin of the IC Differential current sense positive input pin connects to switching node. Differential current sense positive input pin connects to switching node. Differential current sense positive input pin connects to switching node. Differential current sense positive input pin connects to switching node. Channel 4 PWM output pin Channel 3 PWM output pin Channel 2 PWM output pin Channel 1 PWM output pin IC power supply pin connects to 5V

CoreControl TM

Page 4 of 25

DS-CoreControl-TDA21301

TDA21301 is a multi-phase DC-DC buck converter controller integrated all control functions for the next generation GHz CPU voltage regulator. TDA21301 automatically controls 2 to 4 interleaved buck switching power stage operation. The multi-phase architecture is able to provide high output current with lower power dissipation on the switching devices and minimizing the input ripple current and output ripple voltage. The equivalent high operation frequency optimizes the voltage regulator design for better transient response and thermal performance.

TDA21301 utilizes the DCR of the output inductors in every channel as the current sense element. The differential current sense in every channel results precious channel current information to the controller for good droop adjustment, channel current balance, channel switching devices thermal balance and over current protection. The offset error caused by individual differential current sense amplifier can be eliminated due to that the multiplexer is use to select the different channel current sense signals with single differential current sense amplifier.

Block Diagram

VID0 VID1 VID2 VID3 VID4 VID125

VID DAC & Step Control

VOSS

Offset Setting

OVP Setting

PG Setting

VCORE

FB COMP

PGOOD VCC DVD IMAX

Power On Reset

Oscillatior & Sawtooth

PWM Logic

I PWM CMP

PWM Logic

I PWM CMP

PWM Logic

I PWM CMP

OCP Setting

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Datasheet ID: TDA21301 638699