STMicroelectronics TD352 Technical data
■ 1A sink / 0.75A source min. gate drive
P
■ Active Miller clamp feature
■ Desaturation detection
■ Adjustable and accurate turn-on delay
■ UVLO protection
■ 2kV ESD protection
Description
TD352 is an advanced gate driver for IGBT and
power MOSFET. Control and protection functions
are included and allow the design of high reliability
systems.
Innovative active Miller clamp function avoids the
need of negative gate drive in most applications
and allows the use of a simple bootstrap supply
for the high side driver.
TD352
Advanced IGBT/MOSFET Driver
N
DIP-8
(Plastic Package)
D
SO-8
(Plastic Micropackage)
TD352 includes an adjustable turn-on delay. This
Pin Connections (top view)
feature can be used to implement reliable
deadtime between high and low sides of a half
bridge. External resistor and capacitor are used to
provide accurate timing.
Applications
■ 1200V 3-phase inverter
■ Motor control systems
■ UPS
VREF
TD352
CD VL
DESAT
Order Codes
Part Number Temperature Range Package Packaging Marking
TD352IN
TD352ID
TD352IDT Tape & Reel TD352I
-40°C, +125°C
DIP
SO
Tube
VHIN
OUT
CLAM
TD352I
TD352I
December 2004 Revision 1 1/13
TD352 Block Diagram
1 Block Diagram
Figure 1. System and internal block diagram
VH
4.7k
IN VH
VREF
CD
DESAT
Vref
Delay
Desat
UVLO
OUT
VL
Control Block
CLAMP
16V
TD352
Table 1. Pin Description
Name Pin Number Type Function
IN 1 Analog input Input
VREF 2 Analog output +5V reference voltage
CD 3 Timing capacitor Turn on delay
DESAT 4 Analog input Desaturation protection
CLAMP 5 Analog output Miller clamp
VL 6 Power supply Signal ground
OUT 7 Analog output Gate drive output
VH 8 Power supply Positive supply
2/13
Absolute Maximum Ratings TD352
2 Absolute Maximum Ratings
Table 2. Key parameters and their absolute maximum ratings
Symbol Parameter Value Unit
VHL Maximum Supply Voltage (VH - VL) 28 V
Vout Voltage on OUT, CLAMP, LVOFF pins VL-0.3 to VH+0.3 V
Vter Voltage on other pins (IN, CD, VREF) -0.3 to 7 V
Pd Power dissipation 500 mW
Tstg Storage temperature -55 to 150 °C
Tj Maximum Junction Temperature 150 °C
Rhja Thermal Resistance Junction-Ambient 150 °C/W
ESD Electrostatic discharge 2 kV
Table 3. Operating Conditions
Symbol Parameter Value Unit
VH Positive Supply Voltage vs. VL UVLO to 26 V
Toper Operating Free Air Temperature Range -40 to 125 °C
3/13
TD352 Electrical Characteristics
3 Electrical Characteristics
Table 4. T
Symbol Parameter Test Condition Min Typ Max Unit
Input
Vton IN turn-on threshold voltage 0.8 1.0 V
Vtoff IN turn-off threshold voltage 4.0 4.2 V
Iinp IN Input current IN input voltage < 4.5V 1
Voltage reference - Note 1
Vref Voltage reference T=25°C 4.85 5.00 5.15 V
Iref Maximum output current 10 mA
Clamp
Vtclamp CLAMP pin voltage threshold 2.0 V
VCL Clamp low voltage Icsink=500mA 2.5 V
Delay
Vtdel Voltage threshold 2.5 V
Rdel Discharge resistor I=1mA 500
Desaturation protection
Vdes Desaturation threshold VH-2
Ides Source current 250 µA
Outputs
Isink Output sink current Vout=6V 1000 1700 mA
Isrc Output source current Vout=VH-6V 750 1300 mA
VOL1 Output low voltage 1 Iosink=20mA 0.35 V
VOL2 Output low voltage 2 Iosink=500mA 2.5 V
VOH1 Output high voltage 1 Iosource=20mA VH-2.5 V
VOH2 Output high voltage 2 Iosource=500mA VH-4.0 V
tr Rise time CL=1nF, 10% to 90% 100 ns
tf Fall time CL=1nF, 90% to 10% 100 ns
tdon Turn on propagation delay
tdoff Turn off propagation delay 10% output change 400 ns
Under Voltage Lockout (UVLO)
UVLOH UVLO top threshold 10 11 12 V
UVLOL UVLO bottom threshold 9 10 11 V
Vhyst UVLO hysteresis Vhyst=UVLOH-UVLOL 0.5 1 V
Supply current
Iin Quiescent current input low, no load 2.5 mA
= -20 to 125°C, VH=16V (unless otherwise specified)
amb
10% output change:
Rd=4.7k, no Cd
Rd=11k, Cd=220pF 1.8 2.0
500
2.2
µA
Ω
ς
ns
µs
Note:1.Recommended capacitor range on VREF pin is 10nF to 100nF
4/13
Loading...