ET4040QI Datasheet, PDF (1/15 Pages) Altera Corporation – 40A Power Stage High Speed MOSFET with Integrated Current and Temperature Sense

Enpirion^® Power Datasheet
ET4040QI 40A Power Stage
High Speed MOSFET with Integrated
Current and Temperature Sense
Description
The ET4040QI is a 40A, high speed, high density,
monolithic power stage IC with integrated sensing
features in a 5.5mm x 7.5mm x 0.95mm, 46 pin QFN
package. It is targeted for low duty cycle operation,
supplying low voltages for processor, DDR memory,
and GPU core applications. The ET4040QI maintains
very high efficiency at operating frequencies of 1MHz
or greater. The ET4040QI enables 35% higher power
density by utilizing 50-75% less inductance and
significantly less output capacitance than current
generation multi-phase power supply solutions. It
integrates a current sense and temperature
measurement function.
The device has a pin-selectable diode emulation
mode to improve efficiency under PS2 and PS3 low
power modes.
The ET4040QI is designed to interface with multi-
phase PWM controllers and enables high efficiency
delivery of up to 240 Amps for next generation CPU,
DDR memory, and GPU core memory applications.
All Altera Enpirion products are RoHS compliant,
halogen free and are compatible with lead-free
manufacturing environments.
Features
• 40A continuous Operating Current
• 96.4% Peak Efficiency at 500KHz (3.3V at 12A)
• 3MHz Maximum Operating Frequency
• 1.8°C/W Junction-to-Top Thermal Resistance
• 35% Higher Power Density
• No POSCAP or Electrolytic Capacitors Needed
• Thermally Enhanced Low Inductance Package
• Integrated Gate Drive Independent of Drive Voltage
• Integrated Inductor-less Current Sense
• Integrated Die Temperature Sense
• Tri-state Control Option
• Diode Emulation Mode for Light Load Efficiency
• Top-side Cooling for Heat-sink Attachment
• RoHS Compliant, MSL Level 3, 260^oC Reflow
Applications
• High Density Power Stage in Conjunction with
Multi-phase Controllers
• CPU Core, Non-core, Peripheral and DDR Memory
Core Power Supplies
• GPU Core Regulation
• Servers, Desktops, Telecommunications,
Equipment, Industrial and Embedded computing
CONTROLLER
PWM
4.5V – 14V
CIN
1.8V
3.3V
PWM
OFF#
VIN
PGND
VCC_GD
PGND
VCC
VCC_GND
SW
PGND
INDUCTOR
COUT
VOUT
PHASE
BOOT
Figure 1. Simplified Applications Circuit
09588
March 19, 2014
Figure 2. Highest Efficiency
www.altera.com/enpirion, Page 1
Rev A