2010-5
SYSTEM CATALOG
Semiconductors for Power Supplies
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Power Supply Circuit Types and Their Applications
Power supply circuitry includes two blocks: an AC-DC block that converts an alternating current to a direct current, and a DC-DC
block that converts an input DC voltage into several working voltages appropriate for operating the electronic circuitry.
To meet customer demands, Toshiba supports low- to high-power applications and helps improve energy-saving performance
and power efficiency.
Switching
Power Supplies
(AC-DC converters)
DC-DC Converters
Linear
Power Supplies
Half-bridge type
Output:
Up to around 400 W
Forward type
Output:
Up to around 200 W
Flyback type
Output:
Up to around 100 W
Insulated type
Non-insulated type
Output:
Up to around 50 W
Linear type
Output:
Up to around 20 W
Power supplies for
FPD TVs
●
Servers
●
Industrial power
supplies
●
Desktop PCs
●
Game consoles
●
Complex copy
machines
●
Power supplies
●
Chargers for mobile
handsets
●
Notebook PC adaptors
●
Secondary power
supplies
●
●
On-board
DC-DC converters
Notebook PCs
Power conditioners for CPUs
Communications
equipment
Power supplies
Mobile handsets
●
Power supplies for
various boards
●
●
Power Supply Schemes and
Recommended Semiconductor Components
Linear Power Supplies
Switching Power Supplies
(AC-DC converters)
Regulator ICs
PFC controller ICs
Specialized ICs
Power MOSFETs
Power transistors
Inverter control ICs
Photocouplers
Diodes
P.22, P.26
P.28
P.28
P.29
P.30
P.29
P.30
P.20
P.6 to P.9, P.21
P.24
P.28
DC-DC Converters
P.10 to P.19
Linear Power Supplies
P.10 to P.19
–2
Features of Toshiba’s Semiconductor Components for Power Supply Applications
Power MOSFETs
●
Primary-Side MOSFETs
P.22, P26
●
Low ON-resistance and low gate capacitance
●
Maintains the high avalanche capability of proven
conventional products
●
Secondary-Side MOSFETs for Synchronous
Rectification
P.24
●
Ultra-high speed and low ON-resistance
●
New additions to the ultra-high-speed trench series with
a V
DSS
of 60 V to 100 V
DC-DC Converter ICs
●
P.6
Small, thin package and high efficiency
PS-8 or SOP Advance with low thermal resistance
Multiple outputs
Digital control
P.8
P.9
●
●
●
Regulator ICs
●
Series Regulators
●
P.10
Low dropout, low V
OUT
and on/off switch
P.14
Diodes
●
P.30
●
Point Regulator ICs
●
CMOS and bipolar regulators
Single- and dual-output regulators
P.19
Schottky barrier diodes with low leakage current and low
forward voltage
●
Trench structure with high breakdown voltage
●
The leakage current at high temperature is reduced by
90% compared to conventional products.
●
●
Shunt Regulator ICs
●
High precision of ±1% and thin package
P.29
Photocouplers
Power Transistors
●
Power transistors for switching applications
P.28
●
Fast-switching and high-h
FE
transistors are offered in a
variety of packages.
●
Power transistors for MOS gate driving
P.28
●
An NPN transistor and a PNP transistor are housed in a
small surface-mount package to provide a fast gate
driving capability for devices like power MOSFETs.
TLP181/TLP285/TLP781
To meet customer needs, Toshiba offers photocouplers in
a variety of packages that are certified by international
safety standards.
●
DIP4: TLP781
SOP4: TLP285
MFSOP: TLP181
●
●
Contents
1. Configuration Examples of Power Supply Circuitry ............... P.4
2. DC-DC Converter ICs ............................................................ P.6
3. Regulator ICs ....................................................................... P.10
Series Regulators ............................................................... P.10
Low Drop-Out Regulator (LDO) ......................................... P.11
Point Regulator ICs ............................................................ P.14
Shunt Regulators................................................................ P.19
4. PFC Controller ICs............................................................... P.20
5. Specialized ICs .................................................................... P.21
6. Power MOSFETs ................................................................ P.22
7. Power Transistors................................................................. P.28
8. Inverter Control ICs.............................................................. P.28
9. Photocouplers...................................................................... P.29
10. Diodes .................................................................................. P.30
3–
Configuration Examples of
Power Supply Circuitry
Mobile Equipment
Block Diagram
For mobile equipment, such as notebook PCs, DC-DC converters are necessary to support not only inputs from external power
supplies, but also those from internal power supplies including batteries. Toshiba also offers low ON-resistance power
MOSFETs and multiple-output power supply ICs to improve energy efficiency.
Main Board
AC-DC adaptor
power supply
Charger
DC-DC converter
Power Management Switches
DC-DC converter
CPU
Graphics
Primary side and PFC: High-voltage MOSFET
●
Secondary side:
Low-voltage MOSFET (TK Series)
●
Feedback photocouplers for isolation between
P.29
primary and secondary sides (e.g., TLP285)
Memory
I/O
DC-DC converters:
Low-voltage MOSFET (high-speed SOP)
Battery pack
protection
circuitry
PMS and battery pack protection circuitry:
Low-voltage MOSFET (low ON-resistance SOP)
●
Linear Power Supplies (Point Regulator ICs)
Since point regulator ICs are physically small, a constant-voltage source can be easily embedded
in space-limited applications.
Point regulator ICs are available in fixed and adjustable voltage versions. Compared to switching
power supplies, linear power supplies generate less noise and require fewer external components.
On/Off Control
CONTROL
●
Application Examples
General-purpose applications
Input
V
IN
Linear Power Supply
(Point Regulator IC)
P.14
V
OUT
Output
GND
LCD Displays
Power supply
High-voltage MOSFET
SBD
P.31
DC-DC converter
Low-voltage MOSFET
U-MOS Series
P.22 P.24
DC-DC converter
System power device
Low-voltage MOSFET
U-MOS Series
P.22 P.24
Gate
driver
DC-DC converter
LDO (Low drop-out regulator)
P.6
P.11
Timing
control
Source
driver
LCD
panel
Inverter
Backlight
LED drivers
LED drivers
Switching power transistors
P.21
P.28
–4
●
Switching Power Supplies (AC-DC Power Supplies)
Switching power supplies are used at a frequency above 100 kHz. Toshiba offers MOSFETs ideal for
fast switching.
Application Examples
●
Notebook PC adaptors
PFC Switch
High-voltage MOSFET:
DTMOS Series
π-MOSVII
Series
Switching power transistor
SBD of the PFC Controller Block
P.25
P.26
P.28
P.31
Secondary-Side SBD
Secondary-Side Switch
MOSFET:
U-MOS Series
P.31
P.24
Output
Input
PFC
P.20
PFC Controller ICs
TB6818FG
TB6819FG (under development)
Main Block Switch
High-voltage MOSFET:
P.25
DTMOS Series
π-MOSVII
Series
P.26
●
DC-DC Converters (Isolated)
A DC-DC converter can be used in energy-saving mode or for generating a DC supply voltage for
●
Application Examples
General-purpose applications
internal circuitry separately from that of the main DC power source, such as a battery.
For DC-DC Converters
Low-voltage MOSFET:
U-MOS Series
Switching power transistor
Input
Output
P.24
P.28
Solar Power Inverters (Power Conditioner Systems (PCS))
PFC Switch
High-voltage MOSFET:
P.26
π-MOSVII
Series
P.25
DTMOS Series
IGBT
Inverter Switch
High-voltage MOSFET:
P.26
π-MOSVII
Series
P.25
DTMOS Series
IGBT
SBD of the PFC Controller Block
P.31
Booster Block
Inverter Block
Input
Solar panels
Output
FET Driver
FET Driver
Microcontroller
TMPM370FYFG
TMPM370FYDFG
5–
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