# A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Vishay SiC769CD User Guide

Summary

The SiC769CD is an advanced integrated DrMOS Power Stage and Gate Driver solution optimized for high efficiency in multi-phase core voltage regulation systems. This component integrates specialized MOSFETs and a robust driver IC, enabling efficiencies over 90% at frequencies exceeding 1 MHz. The manual details its sophisticated features, including adaptive dead time control, Automatic Skip Mode (SMOD), and comprehensive protection mechanisms (UVLO, shoot-through). It is the preferred solution for electrical engineers designing high-performance power supplies in servers, workstations, and graphics hardware.

📄 Preview 📖 Table of Contents Contents PAGE OF 16

Page 1 Text Content

Si C769CD Vishay Siliconix

Integrated Dr MOS Power Stage

DESCRIPTION FEATURES The Si C769CD is an integrated solution that contains PWM Integrated Gen III MOSFETs and Dr MOS optimized n-channel MOSFETs (high side and low side) and compliant gate driver IC a full featured MOSFET driver IC. The device complies with Enables Vcore switching at 1 MHz

the Intel Dr MOS standard for desktop and server Vcore power Easily achieve > 90 % efficiency in multi-phase, stages. The Si C769CD delivers up to 35 A continuous output low output voltage solutions current and operates from an input voltage range of 3 V to Low ringing on the VSWH pin reduces EMI 16 V. The integrated MOSFETs are optimized for output

Pin compatible with Dr MOS 6 x 6 version 3.0

voltages in the ranges of 0.8 V to 2.0 V with a nominal input

Tri-state PWM input function prevents negative output

voltage of 12 V. The device can also deliver very high power

voltage swing

at 5 V output for ASIC applications.

5 V logic levels on PWM

The Si C769CD incorporates an advanced MOSFET gate

MOSFET threshold voltage optimized for 5 V driver bias

driver IC. This IC accepts a single PWM input from the VR

supply IN

controller and converts it into the high side and low side

Automatic skip mode operation (SMOD) for light load

MOSFET gate drive signals. The driver IC is designed to

efficiency

implement the skip mode (SMOD) function for light load

Under-voltage lockout

efficiency improvement. Adaptive dead time control also

Built-in bootstrap schottky diode

works to improve efficiency at all load points. The Si C769CD ate D river

has a thermal warning (THDN) that alerts the system of Adaptive deadtime and shoot through protection excessive junction temperature. The driver IC includes an Thermal shutdown warning flag enable pin, UVLO and shoot through protection. Low profile, thermally enhanced Power PAK® MLP 6 x 6 The Si C769CD is optimized for high frequency buck 40 pin package applications. Operating frequencies in excess of 1 MHz can Halogen-free according to IEC 61249-2-21 definition

easily be achieved. Compliant to Ro HS directive 2002/95/EC The Si C769CD is packaged in Vishay Siliconix high performance Power PAK MLP6 x 6 package. Compact APPLICATIONS co-packaging of components helps to reduce stray

CPU and GPU core voltage regulation

inductance, and hence increases efficiency.

Server, computer, workstation, game console, graphics boards, PC

Si C769CD APPLICATION DIAGRAMM

VIN5 V

ontroller

SMOD BOOT

DSBL# VSWH

PHASE

Si C769CD

Figure 1

Document Number: 64981 www.vishay.com S10-0113-Rev. D, 18-Jan-10

Page Summary Contents For Vishay SiC769CD User Guide

Page 1 Si C769CD Vishay Siliconix Integrated Dr MOS Power Stage DESCRIPTION FEATURES The Si C769CD is an integrated solution that contains PWM Integrated Gen III MOSFETs and Dr MOS optimized n-channel MOSFET...
Page 2 Si C769CD Vishay Siliconix ORDERING INFORMATION Part Number Package Si C769CD-T1-E3 Power PAK MLP66-40 Si C769DB Reference board ABSOLUTE MAXIMUM RATINGS TA = 25 °C, unless otherwise noted Parameter S...
Page 3 Si C769CD Vishay Siliconix ELECTRICAL SPECIFICATIONS Test Conditions Unless Specified VDSBL# = VSMOD = 5 V, VIN = 12 V, VVDRV = VVCIN 5 V, Parameter Symbol TA = 25 °C Min. Typ.a Max. Unit Power Suppli...
Page 4 Si C769CD Vishay Siliconix MOSFET SPECIFICATIONS Test Conditions Unless Specified VVCIN = VDSBL# = 5 V, Parameter Symbol VVIN = 12 V, TA = 25 °C Min. Typ.a Max. Unit VDS VGS = 0 V, IDS = 250 µA High S...
Page 5 Si C769CD Vishay Siliconix TIMING DEFINITIONS PWM 75% Region Definition Symbol Turn off propagation delay LS td_off_LS Fall time LS tf_LS Dead time rising tdead_on Rise time HS tr_HS Turn off propagat...
Page 6 Si C769CD Vishay Siliconix DETAILED OPERATIONAL DESCRIPTION Voltage Input (VIN) This is the power input to the drain of the high-side Power PWM Input with Tristate Function MOSFET. This pin is connect...
Page 7 Si C769CD Vishay Siliconix DEVICE TRUTH TABLE DSBL# SMOD PWM GH GL H (IL > 0), L (IL ≤ 0) TRISTATE PWM VOLTAGE THRESHOLD DIAGRAM Vth_pwm_r Vth_tri_f Vth_tri_r Vth_pwm_f t TSHO GL t TSHO Figure 3 SM...
Page 8 Si C769CD Vishay Siliconix PIN CONFIGURATION SMOD 1 VSWH VCIN 2 VSWH VDRV 3 28 PGND BOOT 4 27 PGND CGND 5 VSWH 26 PGND GH 6 P3 25 PGND PHASE 7 24 PGND VIN 23 PGND VIN 9 22 PGND VIN 10 21 PGND Figure 5...
Page 9 Si C769CD Vishay Siliconix ELECTRICAL CHARACTERISTICS Temperature (°C) Temperature (°C) ICIN (m A) vs. Temperature at Frequency = 300 k Hz IDRV (m A) vs. Temperature at Frequency = 300 k Hz D = 10 %, ...
Page 10 Si C769CD Vishay Siliconix ELECTRICAL CHARACTERISTICS Temperature (°C) Temperature (°C) SMOD Falling Threshold (V) vs. Temperature (°C) SMOD Rising Threshold (V) vs. Temperature (°C) VCIN = VDRV = 5 V...
Page 11 Si C769CD Vishay Siliconix ELECTRICAL CHARACTERISTICS VCIN (V) VCIN (V) DSBL Falling Threshold vs. VCIN DSBL Rising Threshold vs. VCIN VCIN (V) VCIN (V) SMOD Falling Threshold vs. VCIN SMOD Rising Thr...
Page 12 Si C769CD Vishay Siliconix ELECTRICAL CHARACTERISTICS VIN VIN VCIN VCIN Startup at VIN = 12 V, VOUT = 1.2 V, Power Off at VIN = 12 V, VOUT = 1.2 V, FS = 1 MHz, IOUT = 30 A FS = 1 MHz, IOUT = 30 A lind...
Page 13 Si C769CD Vishay Siliconix TYPICAL POWER LOSS IN SIC769CD Power PAK MLP66-40 PACKAGE 1 MHz ffi ci en cy ac ka ge is si pa tio (W 300 k Hz IOUT (A) VIN = 12 V, VOUT = 1.2 V, VDRV = VCIN = 5 V; No Air F...
Page 14 Si C769CD Vishay Siliconix PACKAGE DIMENSIONS A1 Pin #1 dent Pin 1 dot 0.41 D2-1 by marking A2 MLP66-40 (6 mm x 6 mm) (Nd-1)X e ref. Top View Bottom View Side View MILLIMETERS INCHES Min. Nom. Max. Mi...
Page 15 Si C769CD Vishay Siliconix LAND PATTERN DIMENSIONS Figure 9 - Power PAK MLP 66-40 TAPE AND REEL CARRIER TAPE DIMENSIONS 12.00 Ø 1.50 min. 2.00 ± 0.10 see note 3 4.00 see note 1 R 0.3 max. 7.5 ± 0.1 se...
Page 16 Legal Disclaimer Notice Vishay Disclaimer All product specifications and data are subject to change without notice. Vishay Intertechnology, Inc., its affiliates, agents, and employees, and all persons...