Features
■ 1.5 A source/2.3 A sink (typ) gate drive
■ Active Miller clamp feature
■ Two-level turn-off with adjustable level and
delay
■ Desaturation detection
■ Fault status output
■ Negative gate drive capability
■ Input compatible with pulse transformer or
optocoupler
■ Separate sink and source outputs for easy gate
driving
■ UVLO protection
■ 2 kV ESD protection (HBM)
Applications
■ 1200 V, 3-phase inverters
■ Motor control
■ UPS systems
TD350E
Advanced IGBT/MOSFET driver
Description
This device is an advanced gate driver for IGBTs
and power MOSFETs. Control and protection
functions are included and allow the design of
high reliability systems.
The innovative active Miller clamp function
eliminates the need for negative gate drive in
most applications and allows the use of a simple
bootstrap supply for the high side driver.
The device includes a two-level turn-off feature
with adjustable level and delay. This function
protects against excessive overvoltage at turn-off
in case of overcurrent or short-circuit conditions.
The same delay set in the two-level turn-off
feature is applied at turn-on to prevent pulse width
distortion.
The device also includes IGBT desaturation
protection and a FAULT status output, and is
compatible with both pulse transformer and
optocoupler signals.
Table 1. Device summary
Order codes Temperature range Package Packaging
TD350E
-40, +125 °C SO-14
TD350ETR Tape and reel
September 2011 Doc ID 018539 Rev 2 1/17
Tube
www.st.com
17
Contents TD350E
Contents
1 Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2 Pin connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
4 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
5 Functional description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
5.1 Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
5.2 Voltage reference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
5.3 Desaturation protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
5.4 Active Miller clamp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
5.5 Two-level turn-off . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
5.6 Minimum ON time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
5.7 Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
5.8 Fault status output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
5.9 Undervoltage protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
6 Timing diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
7 Typical performance curves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
8 Application diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
9 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
10 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
2/17 Doc ID 018539 Rev 2
TD350E Block diagram
1 Block diagram
Figure 1. TD350E functional block diagram
9UHI
0ULSE4RANSFORMER
9+
9UHI
9UHI
9+
).
62%&
&!5,4
.#
#/&&
.#
,6/&&
6REF
/FF
DELAY
/FF,EVEL
56,/
#ONTROL "LOCK
4$%
$ESAT
$%3!4
6(
/54(
/54,
6,
#,!-0
'.$
6
/PTIONNAL
6
".W
Doc ID 018539 Rev 2 3/17
Pin connections TD350E
2 Pin connections
Figure 2. Pin connections (top view)
$%3!4
6(
(
/54
/54,
6,
#,!-0
'.$
62%
&!5, 4
.#
#/&&
.#
,6/&&
).
&
4$%
Table 2. Pin description
Name Pin number Type Function
IN 1 Analog input Input
VREF 2 Analog output +5 V reference voltage
FAULT 3 Digital output Fault status output
NC 4 Not connected
COFF 5 Timing capacitor Turn-off delay
NC 6 Not connected
LVOFF 7 Analog input Turn off level
GND 8 Power supply Signal ground
".W
CLAMP 9 Analog output Miller clamp
VL 10 Power supply Negative supply
OUTL 11 Analog output Gate drive output (sink)
OUTH 12 Analog output Gate drive output (source)
VH 13 Power supply Positive supply
DESAT 14 Analog input Desaturation protection
4/17 Doc ID 018539 Rev 2
TD350E Absolute maximum ratings
3 Absolute maximum ratings
Table 3. Key parameters and their absolute maximum ratings
Symbol Parameter Value Unit
VHL Maximum supply voltage (VH - VL) 28 V
VH Maximum VH voltage vs. GND 28 V
VL Minimum VL voltage vs. GND -12 V
V
V
V
T
R
R
ESD Electrostatic discharge (HBM) 2 kV
Voltage on OUTH, OUTL, CLAMP pins VL-0.3 to VH+0.3 V
out
Voltage on DESAT, FAULT, LVOFF pin -0.3 to VH+0.3 V
des
Voltage on other pins (IN, COFF, VREF) -0.3 to 7 V
other
Power dissipation 500 mW
P
d
Storage temperature -55 to 150 °C
stg
T
Maximum junction temperature 150 °C
j
Thermal resistance junction-ambient 125 °C/W
thja
Thermal resistance junction-case 22 °C/W
thjc
Table 4. Operating conditions
Symbol Parameter Value Unit
VH Positive supply voltage vs. GND UVLO to 26 V
VL Negative supply voltage vs. GND 0 to -10 V
VH-VL Maximum total supply voltage 26 V
T
Operating free air temperature range -40 to 125 °C
oper
Doc ID 018539 Rev 2 5/17
Electrical characteristics TD350E
4 Electrical characteristics
TA = -20 to 125 °C, VH=16 V, VL= -10 V (unless otherwise specified)
Table 5. Electrical characteristics
Symbol Parameter Test condition Min Typ Max Unit
Input
V
V
t
onmin
I
Voltage reference
V
I
IN turn-on threshold voltage 0.8 1.0 V
ton
IN turn-off threshold voltage 4.0 4.2 V
toff
Minimum pulse width 100 135 220 ns
IN input current 1 μA
inp
(1)
Voltage reference
ref
Maximum output current 10 mA
ref
Desaturation protection
V
I
Desaturation threshold 6.5 7.2 7.9 V
des
Source current 250 μA
des
Fault output
t
fault
V
Delay for fault detection 500 ns
FAULT low voltage I
FL
Clamp
V
tclamp
V
CLAMP pin voltage threshold 2.0 V
Clamp low voltage
CL
Off delay
T=25°C
T
<T<T
min
FLsink
T=25°C; I
T
min
max
=10mA 1 V
=500mA
CLsink
<T<T
max
; I
CLsink
=500mA
4.85
4.77
5.00 5.15
5.22
VL+2.5
VL+3.0VV
V
V
V
R
Voltage threshold 2.35 2.50 2.65 V
tdel
Discharge resistor I=1mA 500 Ω
del
Off levels
I
blvoff
V
LVOFF peak input current (sink) LVOFF=12V 120 200 μA
Offset voltage LVOFF=12V -0.3 -0.15 0 V
iolv
Outputs
V
V
Output low voltage at I
OL1
Output low voltage at I
OL2
=20mA VL+0.35 V
osink
osink
=200mA
T=25°C
<T<T
T
min
max
6/17 Doc ID 018539 Rev 2
VL+1.0
VL+1.5VV
TD350E Electrical characteristics
Table 5. Electrical characteristics (continued)
Symbol Parameter Test condition Min Typ Max Unit
V
V
V
V
Output low voltage at I
OL3
Output high voltage 1 I
OH1
Output high voltage 2 I
OH2
Output high voltage 3 I
OH3
osink
=500mA
T=25°C
<T<T
T
min
osource
osource
osource
max
=20 mA VH-2.5 V
=200 mA VH-3.0 V
=500 mA VH-4.0 V
VL+2.5
VL+3.0VV
CL=1nF, 10% to 90%
t
r
t
f
Rise time
Fall time
(2)
VL=0
VL=-10V
CL=1nF, 90% to 10%
VL=0
VL=-10V
10% output change;
130
175
75
90
400 500 600 ns
T=25°C
t
pd_on
Turn-on propagation delay
10% output change;
T
<T<T
min
max
10% output change;
350 650 ns
350 450 570 ns
T=25°C
t
pd_off
Turn-off propagation delay
10% output change;
<T<T
T
min
max
300 620 ns
Δtw Input to output pulse distortion 10% output change 25 50 120 ns
Undervoltage lockout (UVLO)
ns
ns
ns
ns
UVLOH UVLO top threshold 10 11 12 V
UVLOL UVLO bottom threshold 9 10 11 V
V
UVLO hysteresis UVLOH-UVLOL 0.5 1 V
hyst
Supply current
Quiescent current Output=0 V, no load 5 mA
I
in
1. Recommended capacitor range on VREF pin is 10 nF to 100 nF.
2. 2-step turn-off disabled
Doc ID 018539 Rev 2 7/17
Functional description TD350E
5 Functional description
5.1 Input
The input is compatible with optocouplers or pulse transformers. The input is triggered by
the signal edge and allows the use of a small-sized, low-cost pulse transformer. Input is
active low (output is high when input is low) to ease the use of the optocoupler. When driven
by a pulse transformer, the input pulse (positive and negative) width must be larger than the
minimum pulse width t
5.2 Voltage reference
A voltage reference is used to create accurate timing for the two-level turn-off with external
resistor and capacitor.
5.3 Desaturation protection
Desaturation protection ensures the protection of the IGBT in the event of overcurrent.
When the DESAT voltage goes higher than 7 V, the output is driven low (with 2-level turn-off,
if applicable). The FAULT output is activated. The FAULT state is exited at the next falling
edge of IN input.
onmin
.
A programmable blanking time is used to allow enough time for IGBT saturation. Blanking
time is provided by an internal current source and external capacitor.
DESAT input can also be used with an external comparator for overcurrent or
overtemperature detection.
5.4 Active Miller clamp
A Miller clamp allows the control of the Miller current during a high dV/dt situation and can
eliminate the need for a negative supply voltage.
During turn-off, the gate voltage is monitored and the clamp output is activated when gate
voltage goes below 2 V (relative to GND). The clamp voltage is VL+3 V max for a Miller
current up to 500 mA. The clamp is disabled when the IN input is triggered again.
5.5 Two-level turn-off
The two-level turn-off is used to increase the reliability of the application.
During turn-off, gate voltage can be reduced to a programmable level in order to reduce the
IGBT current (in the event of overcurrent). This action prevents both dangerous overvoltage
across the IGBT and RBSOA problems, especially at short-circuit turn-off.
Turn-off (T
timing.
) delay is programmable through an external resistor and capacitor for accurate
a
Turn-off delay (T
width.
8/17 Doc ID 018539 Rev 2
) is also used to delay the input signal to prevent distortion of input pulse
a
TD350E Functional description
5.6 Minimum ON time
In order to ensure the proper operation of the 2-level turn-off function, the input ON time
(T
) must be greater than the T
win
T
winmin=Ta
R
del
Input signals smaller than T
the output stage after the T
For an input signal width T
below T
+2*R
del*Coff
is the internal discharge resistor and C
are ignored. Input signals larger than T
a
delay with minimum width distortion (ΔTw=T
a
between Ta and T
(pulse distortion) and the IGBT could be partially turned on. These input signals
win
win
winmin
value:
is the external timing capacitor.
off
winmin
, the output width T
winmin
are transmitted to
wout-Twin
wout
).
is reduced
should be avoided during normal operation.
5.7 Output
The output stage is able to sink 2.3 A and source 1.5 A (typ) at 25 °C (1.2 A/0.75 A minimum
over the full temperature range). Separate sink and source outputs allow independent gate
charge and discharge control without an extra external diode.
5.8 Fault status output
Fault output is used to signal a fault event (desaturation, UVLO) to a controller. The fault pin
is designed to drive an optocoupler.
5.9 Undervoltage protection
Undervoltage detection protects the application in the event of a low VH supply voltage
(during startup or a fault situation). During undervoltage, the OUTH pin is open and the
OUTL pin is driven low (active pull-down for VH>2 V, passive pull-down for VH<2 V). Fault
output signals the undervoltage state and is reset only when undervoltage state disappears.
Figure 3. Undervoltage protection
6(
/54
&!5, 4
56(
56,
6CCMIN
6
".W
Doc ID 018539 Rev 2 9/17
Functional description TD350E
Figure 4. Detailed internal schematic
56,/
#/&&
,6 / & &
99
#OMP?)NPUT
$ELAY
6REF
U!
#OMP?$ESAT
9
62%&
9+
$%3!4
).
#ONTROL"LOCK
9UHI
#OMP?$ELAY/FF
9
6
#OMP?#LAMP
9
&!5,4
#,!-0
6(
/54(
9+
LEVEL/&&DRIVER
/54,
6,
10/17 Doc ID 018539 Rev 2
'.$
".W
TD350E Timing diagrams
6 Timing diagrams
Figure 5. Turn-on and turn-off
IN
COFF
Ta
OUT
CLAMP
Vge
VL level
Vce
Figure 6. Minimum ON time
Tin<Ta Tin>Twinmin
IN
Ta<Tin<Twinmin
Twin
VH level
Twout
Open
VH level
Miller plateau
Ta
LVOFF
VL level
Clamp threshold
2.5V
COFF
Ta
OUT
CLAMP
Figure 7. Desaturation fault
IN
COFF
OUT
DESAT
FAULT
Ta
Open
2.5V
Ta
Desat Blanking Time
Ta Ta
VH level
LVOFF
VL level
Ta
VH level
LVOFF
VL level
7V
open
Doc ID 018539 Rev 2 11/17
Typical performance curves TD350E
7 Typical performance curves
Figure 8. Supply current vs. temperature Figure 9. Low level output voltage vs. temp.
Figure 10. Desaturation threshold vs. temp. Figure 11. Voltage reference vs. temp.
5.0
4.0
3.0
In (mA)
2.0
1.0
0.0
-50 -25 0 25 50 75 100 125
Temp (°C)
10
9
8
Vdes (V)
7
3.0
3.0
2.0
2.0
Iosink=500mA
Iosink=500mA
VOL -VL ( V)
VOL -VL ( V)
1.0
1.0
Iosink=200mA
Iosink=200mA
Iosink=20mA
0.0
0.0
-50 -25 0 25 50 75 100 125
-50 -25 0 25 50 75 100 125
Temp (°C)
Temp (°C)
5.20
5.10
5.00
Vref ( V)
Iosink=20mA
6
5
-50 -25 0 25 50 75 100 125
Temp (°C)
4.90
4.80
-50 -25 0 25 50 75 100 125
Temp (°C)
Figure 12. High level output voltage vs. temp. Figure 13. Desaturation source current vs.
4.0
4.0
3.0
3.0
Iosource=500mA
Iosource=500mA
2.0
2.0
VH-VO H (V)
VH-VO H (V)
1.0
1.0
0.0
0.0
-50-250 255075100125
-50-250 255075100125
Temp (°C)
Temp (°C)
Iosource=200mA
Iosource=200mA
Iosource=20mA
Iosource=20mA
temp.
500
400
300
200
Ides (uA)
100
0
-50 -25 0 25 50 75 100 125
Temp (°C)
12/17 Doc ID 018539 Rev 2
TD350E Application diagrams
8 Application diagrams
Figure 14. Single supply IGBT drive with active Miller clamp and 2-level turn-off
6(
6REF
6(
9
6REF
).
62%&
&!5,4
.#
#/&&
.#
,6/&&
6REF
/FF,EVEL
/FF
DELAY
56,/
$%3!4
$ESAT
#ONTROL "LOCK
6(
/54(
/54,
6,
#,!-0
'.$
6
4$%
Figure 15. Large IGBT drive with negative gate drive and desaturation detection
6REF
6REF
/FF
DELAY
/FF,EVEL
56,/
"LOCK
#ONTROL
4$%
$ESAT
$%3!4
6(
/54(
/54,
6,
#,!-0
'.$
6
6
0ULSE4RANSFORMER
6(
6REF
6(
6REF
).
62%&
&!5,4
.#
#/&&
.#
,6/& &
Figure 16. Use of DESAT input for direct overcurrent detection
%
Doc ID 018539 Rev 2 13/17
Package mechanical data TD350E
9 Package mechanical data
In order to meet environmental requirements, ST offers these devices in different grades of
ECOPACK
specifications, grade definitions and product status are available at: www.st.com.
ECOPACK
®
packages, depending on their level of environmental compliance. ECOPACK®
®
is an ST trademark.
Table 6. SO-14 mechanical data
mm. inch
Dim.
Min Typ Max Min Typ Max
A 1.75 0.068
a1 0.1 0.2 0.003 0.007
a2 1.65 0.064
b 0.35 0.46 0.013 0.018
b1 0.19 0.25 0.007 0.010
C 0.5 0.019
c1 45° (typ.)
D 8.55 8.75 0.336 0.344
E 5.8 6.2 0.228 0.244
e 1.27 0.050
e3 7.62 0.300
F 3.8 4.0 0.149 0.157
G 4.6 5.3 0.181 0.208
L 0.5 1.27 0.019 0.050
M 0.68 0.026
S 8° (max.)
14/17 Doc ID 018539 Rev 2
TD350E Package mechanical data
Figure 17. Package dimensions
Doc ID 018539 Rev 2 15/17
Revision history TD350E
10 Revision history
Table 7. Document revision history
Date Revision Changes
08-Mar-2011 1 First release.
23-Sep-2011 2
– Updated Ta b l e 1
– Minor text changes throughout the document
16/17 Doc ID 018539 Rev 2
TD350E
Please Read Carefully:
Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the
right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any
time, without notice.
All ST products are sold pursuant to ST’s terms and conditions of sale.
Purchasers are solely responsible for the choice, selection and use of the ST products and services described herein, and ST assumes no
liability whatsoever relating to the choice, selection or use of the ST products and services described herein.
No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted under this document. If any part of this
document refers to any third party products or services it shall not be deemed a license grant by ST for the use of such third party products
or services, or any intellectual property contained therein or considered as a warranty covering the use in any manner whatsoever of such
third party products or services or any intellectual property contained therein.
UNLESS OTHERWISE SET FORTH IN ST’S TERMS AND CONDITIONS OF SALE ST DISCLAIMS ANY EXPRESS OR IMPLIED
WARRANTY WITH RESPECT TO THE USE AND/OR SALE OF ST PRODUCTS INCLUDING WITHOUT LIMITATION IMPLIED
WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE (AND THEIR EQUIVALENTS UNDER THE LAWS
OF ANY JURISDICTION), OR INFRINGEMENT OF ANY PATENT, COPYRIGHT OR OTHER INTELLECTUAL PROPERTY RIGHT.
UNLESS EXPRESSLY APPROVED IN WRITING BY TWO AUTHORIZED ST REPRESENTATIVES, ST PRODUCTS ARE NOT
RECOMMENDED, AUTHORIZED OR WARRANTED FOR USE IN MILITARY, AIR CRAFT, SPACE, LIFE SAVING, OR LIFE SUSTAINING
APPLICATIONS, NOR IN PRODUCTS OR SYSTEMS WHERE FAILURE OR MALFUNCTION MAY RESULT IN PERSONAL INJURY,
DEATH, OR SEVERE PROPERTY OR ENVIRONMENTAL DAMAGE. ST PRODUCTS WHICH ARE NOT SPECIFIED AS "AUTOMOTIVE
GRADE" MAY ONLY BE USED IN AUTOMOTIVE APPLICATIONS AT USER’S OWN RISK.
Resale of ST products with provisions different from the statements and/or technical features set forth in this document shall immediately void
any warranty granted by ST for the ST product or service described herein and shall not create or extend in any manner whatsoever, any
liability of ST.
ST and the ST logo are trademarks or registered trademarks of ST in various countries.
Information in this document supersedes and replaces all information previously supplied.
The ST logo is a registered trademark of STMicroelectronics. All other names are the property of their respective owners.
© 2011 STMicroelectronics - All rights reserved
STMicroelectronics group of companies
Australia - Belgium - Brazil - Canada - China - Czech Republic - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan -
Malaysia - Malta - Morocco - Philippines - Singapore - Spain - Sweden - Switzerland - United Kingdom - United States of America
www.st.com
Doc ID 018539 Rev 2 17/17
Loading...