Transcript
Product Brief
DrMOS 5x5 Power MOSFET and Driver in one Small 5x5 Package DrMOS 5x5 is an integrated power stage for high performance DC/DC Voltage Regulation solutions, comprising Infineon’s Driver and OptiMOS™ 5 25 V MOSFET technologies in a 5.0x5.0x0.8 mm3 package. It utilizes low-side source-down technique, enabling a big PGND pad for improved thermal coupling to the PCB. Parasitics in the DrMOS 5x5 have been reduced, resulting in lower power loss. With OptiMOS™ 5 MOSFETs, DrMOS 5x5 can enable a peak efficiency of more than 95%. Together with Infineon’s Digital VR controller, DrMOS 5x5 offers Best-in-Class efficiency and power density, developed, qualified and validated as a system solution from Infineon. It is optimized for next generation Voltage Regulation standards in Server applications, such as Intel’s VR platforms. Customer Benefits and Safety Features DrMOS 5x5 features PWM three-state functionality, compatible to standard PWM Controller ICs with 3.3 V logic and works with +5 V high-side (HS) and low-side (LS) driving voltage. The IQFN40 package is RoHS compliant. The device can issue a thermal warning to the system, triggered by an integrated temperature sense, in case the system has reached a certain temperature. DrMOS 5x5 offers additional safety features, such as shoot-through protection to prevent simultaneous conduction of the HS and LS MOSFETs. Furthermore, UVLO (Under Voltage LockOut) protection for critical supply voltages including the boot voltage is implemented. This ensures system functionality during small drops in the input voltage. For the boot circuit, a refresh feature exists to properly maintain the boot voltage during idle periods. The integrated Remote Driver function allows to switch off the LS MOSFET at low loads, improving system efficiency.
Main Features Recommended input voltage
+4.5 V to +16 V Low-side source-down for lowest
parasitics and max. performance Fast switching technology for 500 kHz to 1 MHz high-switching frequencies
Key Benefits > 95% peak efficiency Thermal warning Remote Driver disable function Integrated bootstrap diode (no need
of ext. diode) with refresh circuit
Applications Desktop and Server VR Buck Converter Single-phase and multiphase POL CPU/GPU Regulation in Notebook, Desktop Graphics Cards, DDR Memory, Graphic Memory High Power Density VRM
www.infineon.com/drmos
Product Brief
DrMOS 5x5 Power MOSFET and Driver in one Small 5x5 Package Vin + Drv + Cntl Efficiency
96
System Efficiency for VR12.5 Application With the following conditions DrMOS 5x5 provides >95% peak efficiency: 5 phases, PS0, 600 kHz, 150 nH, LL = 0 mΩ Vin = 12 V, Vout = 1.82 V
95 Efficiency [%]
94 93 92 91 90 89 88
0
10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 200 Output Load Current [A] Infineon TDA21231
Package Footprint and Package Pin-out
8
7
6
5
4
3
2
31 VIN
30
PGND
11
PHFLT#
GL
27
EN
PVCC
29
12 13
PHASE
BOOT
GH
1 µF
PGND
GL
PWM
AGND
25
14
24
15 16 17 18 19 20 21 22 23
L
SW
VOUT
PHFLT#
4.0 k
VIN
10 k
PVCC
AGND
HS MOSFET
Level Shifter
100 k HS Logic
AGND 3.3 V 4.25 k
26
PGND
HS Driver
UVLO
EN
28
PGND
VCC
DRIVER IC
1
9 10
PVCC/VCC (e.g. 5 V)
NC PWM
VCC
VIN
e.g. 4x10 µF
Application Diagram
1Ω
AGND
VIN (e.g. 12 V) CIN
Competitor 2
1 µF
GH BOOT
PHASE
470 nF CBOOT
Competitor 1
Shoot Through Protection Unit
1.5 k SW
Input Logic TriState
Thermal Sense Cell
LS MOSFET
PVCC
LS Logic
LS Driver
10 k PGND
COUT
PVCC
GL
Product Portfolio Product Type
Part No. / Product Name
Max. Phases / Rail
Package Name
Power stage (driver + MOSFETs)
TDA21231 DrMOS 5x5
–
5.0x5.0 mm2 PG-IQFN-31
Digital VR Controller
PX7247 / PX7241 PX7143 / PX7242
6 +1 / 3+3 3 ph / 1+1
6.0x6.0 mm2 VQFN 48pin 5.0x5.0 mm2 VQFN 40pin
Published by Infineon Technologies Austria AG 9500 Villach, Austria © 2015 Infineon Technologies AG. All Rights Reserved. Visit us: www.infineon.com
Please note! THIS DOCUMENT IS FOR INFORMATION PURPOSES ONLY AND ANY INFORMATION GIVEN HEREIN SHALL IN NO EVENT BE REGARDED AS A WARRANTY, GUARANTEE OR DESCRIPTION OF ANY FUNCTIONALITY, CONDITIONS AND/OR QUALITY OF OUR PRODUCTS OR ANY SUITABILITY FOR A PARTICULAR PURPOSE. WITH REGARD TO THE TECHNICAL SPECIFICATIONS OF OUR PRODUCTS, WE KINDLY ASK YOU TO REFER TO THE RELEVANT PRODUCT DATA SHEETS PROVIDED BY US. OUR CUSTOMERS AND THEIR TECHNICAL DEPARTMENTS ARE REQUIRED TO EVALUATE THE SUITABILITY OF OUR PRODUCTS FOR THE INTENDED APPLICATION. WE RESERVE THE RIGHT TO CHANGE THIS DOCUMENT AND/ OR THE INFORMATION GIVEN HEREIN AT ANY TIME.
Order Number: B111-I0109-V1-7600-EU-EC-P Date: 06 / 2015
Additional information For further information on technologies, our products, the application of our products, delivery terms and conditions and/or prices please contact your nearest Infineon Technologies office (www.infineon.com). Warnings Due to technical requirements, our products may contain dangerous substances. For information on the types in question please contact your nearest Infineon Technologies office. Except as otherwise explicitly approved by us in a written document signed by authorized representatives of Infineon Technologies, our products may not be used in any life endangering applications, including but not limited to medical, nuclear, military, life critical or any other applications where a failure of the product or any consequences of the use thereof can result in personal injury.
