L o w Vo l t a g e I C s – D i s c r e t e s : O p t i M O S
®
, O p t i M O S
®
2
Pow e r Ma n a g e m e n t & Su p p l y :
D C / D C Se l e c t
i o n Gu i d e
w w w. i n f i n e o n . c o m / p o w e r
Never stop thinking.
Introduction
D C / D C C O N V E R S I O N plays a critical role in todays’ applications
such as desktop and notebook computers, consumer equipment e.g. DVD
players and set-top boxes or portable electronics, such as PDAs, MP3 players
to mention but a few.
A L L T H E S E A P P L I C A T I O N S make ever-increasing demands on the
internal power conversion; power losses must be reduced and efficiency
improved, translating into less heat and a longer battery lifetime. At the same
time devices are constantly shrinking in size, increasing the power density.
W E C A N H E L P you out. Our OptiMOS
®
2 power MOSFET technology
reduces the resistive and switching loss components significantly. The gate
charge – and consequently the “figure-of-merit” of our devices – has become
the new industry benchmark. More importantly, the output charge is reduced to
extremely low levels, minimizing the total switching losses for a given output
current. At the same time, best-in-class power MOSFETs with an on-resistance
in the range of 3 mΩ and below, are now possible, making new circuit con-
cepts and applications possible. New packages like our SSO8 show strongly
reduced package resistances, and – furthermore – parasitic inductances.
Coupled with excellent thermal performance, our new 30 V OptiMOS
®
2 pro-
ducts allow for new levels of power conversion efficiency especially in portable
applications. For applications with space constraints, a large product portfolio
of devices in smaller packages is available, including dual and complementary
devices.
c
c
d
s
I N A D C / D C C O N V E R T E R solution all components must be optimized
in order to achieve the highest efficiency and power density, at a given cost.
Our low-voltage control ICs and gate drivers are designed for optimum performance,
along with new ideas for control and protection functions.
2
Contents
ICs
In t e g r a t e d Sw i t c h
P W M C o n t ro l I C
G a t e Dr i v e r
4
4
4
Di s c re t e s
N - C h a n n e l M O S F E Ts , 2 5 t o 2 4 0 V
( O p t i M O S
®
2 , O p t i M O S
®
, St a n d a rd M O S )
P - C h a n n e l M O S F E Ts , - 2 0 t o - 2 4 0 V
( O p t i M O S
®
- P, St a n d a rd M O S )
Complementary P/N Enhancement
Alphanumeric Listing
Pa c k a g e s
12
13
14
16
6
3
Integrated
Switch
TDA 21201
Integrated switch = Gate driver + power MOSFETs
Used for DC/DC conversion for CPU power supply
on PC mainboards
Can also be used for any voltage conversion with
high V
IN
/ V
OUT
ratio
Gate driver functionality: Overtemperature
protection, cross-current prevention, power-down
Package: P-TO220-7 / D
2
-PAK
SMD version:
Straight lead version:
Supply voltage 12 V
Current rating depending on cooling:
30 A ( Heatsink), 18 A (SMD)
Efficiency
>
85% can be reached
Simple board layout
Volume production started
TDA 21201-B7
TDA 21201-P7
Gate Driver
TDA 21102 / TDA 21106
High-speed MOSFET driver in single & dual version
Drives two N-Channel MOS in half-bridge configuration
( buck converter )
Supply voltage 12 V
Increased current handling capability for
efficient high-speed designs:
Gate drive peak current 2 A
Switching frequency
>
1 MHz
Functionality: Cross-current prevention,
shut-down mode
Package P-DSO-8 ( TDA 21106 ), P-DSO-14 ( TDA 21102 )
Compatible with Intersil HIP6601 and 6602
Can be used with all standard PWM controllers
No bootstrap diode required
Staggered lead version: TDA 21201-S7
PWM Control IC
TDA 21302
2 – 4 Phase PWM conversion with
automatic phase selection
VRD10.x compliant
Active droop compensation for fast load response
Smooth Vcore voltage transition during the
VID on-the-fly
Power stage thermal balance by
Sync. FET R
DS(on)
current sense technique
Hiccup mode over current protection
Programmable switching frequency
( 50 KHz – 400 KHz per phase)
Under voltage lockout
Soft-start
High output ripple frequency times numbers
of working channels
4
Package P-DSO-32
V
CC
TDA 21201-B7
Phase 1
PWM
control
IC
Phase 2
TDA 21201-B7
V
OUT
GND
GND
Control IC
Gate driver + Power stage = Integrated switch
Application example: integrated switch application circuit (2-phase solution) with a simple
and clean layout
Vcc
Bootstrap
capacitor
Phase 1
TDA
21106
V
IN
6x OptiMOS
®
2
TDA
21302
Phase 2
Phase 3
TDA
21102
V
IN
CPU
supply
voltage
(< 2 V)
GND
V
IN
PMW control IC
Gate driver
Power stage
Application example: stand-alone gate driver / application circuit ( 3-phase solution with single and dual gate driver)
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In t e g r a t e d Sw i t c h / P W M C o n t ro l I C / G a t e Dr i v e r
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