1SD1548AI
Data Sheet
IGBT-Driver.com Page 1
1SD1548AI Sin gle-Channel
High-Power S CA LE Driv e r Core
Description
The SCALE driver 1SD1548AI from CONCEPT is based on a chip set that was developed
specifically for the reliable driving and safe opera tion of I GBTs a nd power MOSFETs.
The SCALE driver 1 SD1 548AI feat ures
a high gate current of
±
48A and a
high power of 15W. It has been
specially developed for high-
frequency applications (e.g. resonant
converters) with a high gate-power
requirement or for high gate-current
driving applications (e.g. parallel
connection of high-power IGBT
modules).
Product Highlights Applications
Suitable for 1200V and 1700V IGBTs Inverters
Short-circuit and over-current protection Motor drive technology
Extremely reliable, long service life Traction
High gate current of ±48A Railroad pow er supplies
Electrical insulati on of 4000VAC Converters
Electrically insulat ed status acknowledgement P ower engineering
Monitoring of power supply and self-monitoring Switched-mode power supplies
Switching fr eq uenc y DC to 150kHz Radiology and laser technology
Duty cycle: 0... 100% DC/DC c onverters
High dv/d t immunity, typical >100kV/µs Research
Complete with built-in 15W DC/DC c onverter RF generators and converters
1SD1548AI
Data Sheet
Page 2 INTELLIGENT POWER ELECTRONICS
Block Diagram
VDC
GND
Rg
IGD001LDI001
Electronic Level External Circuit
Separation Power Lev el
Driv e r o nIn terface on
PWM
Oscillator
Galvanic
Rth
VDD
GND
Dz
S
Z1
Z2
COM
COM
VPOS
VPOS
VNEG
VNEG
E
AC
C
Rth
G
Fig. 1 Block diagram of the 1SD15 48AI
1SD1548AI
Data Sheet
IGBT-Driver.com Page 3
Pin Designation
Pin Des. Function
1 VDD +15V for electro ni c input side
2 VDD +15V for electro ni c input side
3 VDD +15V for electro ni c input side
4 SO Status output
5 VL Logic lev el/Reset
6 In Input
7 GND Ground
8 GND Ground
9 GND Ground
10 GND Ground
11 GND Ground
12 GND Ground
13 GND Ground
14 VDC +15V for DC/DC converter
15 VDC +15V for DC/DC converter
16 VDC +15V for DC/DC converter
17 VDC +15V for DC/DC converter
18 VDC +15V for DC/DC converter
19 VDC +15V for DC/DC converter
20 Free
21 VDC +15V for DC/DC converter
22 VDC +15V for DC/DC converter
Pin Des. Function
44 VPOS Blocking capacitor +15V
43 COM Common
42 VNEG Blocking capacitor -15V
41 E Emitter
40 G Gate
39 E Emitter
38 G Gate
37 E Emitter
36 G Gate
35 AC Enhanced active clamping
34 Rth Referenc e r e s istor
33 C Collect or sense
32 LS Local status
31 E Emitter
30 G Gate
29 E Emitter
28 G Gate
27 E Emitter
26 G Gate
25 VPOS Blocking capacitor +15V
24 COM Common
23 VNEG Blo cking capaci tor -15V
Notes:
1) Pins with the designation “Free” are not physically present.
2) E (Emitter ) i s directly connect ed to COM (same potential).
3) AC should be connected to VNEG if not used (normal case)
PCB Layout / Dimensions
Details of circuit board layout
Grid of the aspect drawing on page 4 below: 1.27mm (50mil)
Recommended diameter of solder pad: Ø 1.52mm
Recommended diameter of drill holes: Ø 1.1mm
1SD1548AI
Data Sheet
Page 4 INTELLIGENT POWER ELECTRONICS
Dimensions
Fig 2 Front view (top) / Layout overview component side (bottom) 1SD1548AI
1SD1548AI
Data Sheet
IGBT-Driver.com Page 5
Fig. 3 Sid e view (top) / Mecha ni c al fixing (bottom) 1SD1548AI
Height X: typ. 19mm
1SD1548AI
Data Sheet
Page 6 INTELLIGENT POWER ELECTRONICS
Mechanical fixing
The 1SD1548AI d river h as two holes, each 3.2mm in diameter. They allow additional
fixing of the d r iver for app l ications requiring very high resi stance to shaking /vibration
(railways, traction syst ems, electrica l ly-driven vehicles, etc.). See Fig. 3 (bottom).
Absolute Maximum Ratings
Parameter Test conditions Min Max Units
Supply voltage VDC 0 16 Vdc
Supply voltage VDD 0 16 Vdc
Logic inp ut voltage To GND (Note 5) 0 VDD Vdc
Gate pea k current IG G to E -48 +48 A
Output power DC/DC converter 15 W
Operating voltage Continuous (Note 8) 1700 Vdc
Test voltag e (50Hz/1min) Inputs to outputs 4000 VAC(eff)
Operating temperature Note 10 -40 +85 °C
Storage temperature -40 +90 °C
All data r efer to +25°C and VDD = VDC = 15V unless ot h erwis e specified
Electrical Characteristics
Power supply Test conditions Min Typ. Max Units
Nominal supply voltage VDC To GND (Note 1) 15 Vdc
Supply current IDC Without load 55 mA
Max. supp ly c ur r ent IDC Note 2 1200 mA
Output power DC/DC converter Note 3 15 W
Efficiency η Internal DC/DC converter, full load 90 %
Nominal supply voltage VDD To GND 15 Vdc
Supply current IDD Without loa d 10 mA
Supply current IDD At 50kHz switching frequency 14 mA
1SD1548AI
Data Sheet
IGBT-Driver.com Page 7
Electrical Characteristics (Continuation)
Power supply monitoring Test conditions Min Typ. Max Units
Turn-on threshold Vth Note 4 11.4 Vdc
Hysteresis on/o ff N ote 4 0.8 Vdc
Logic inputs Test conditions Min Typ. Max Units
Input voltage All inputs (Note 5) 0 VDD Vdc
Timing characteristics Test conditions Min Typ. Max Units
Delay time inp ut to output Turn-on tpd(on) 335 ns
Turn-off tpd(off) 420 ns
Blocking time After failur e (Note 13) 1 s
Outputs Test conditions Min Typ. Max Units
Output c ur r ent IG G to E ( N ote 6) -48 +48 A
Output ri se t i m e tr(out) G to E (Note 7) 20/85 ns
Output fall time tf(out) G to E (Note 7) 20/60 ns
Output c ur r ent SO 1.5 mA
Output voltage rating SO SO to GND VDD V
Output c ur r ent LS 5 mA
Vce monitoring Test conditions Min Typ. Max Units
Input C To E 0 VDD Vdc
Electrical insulation Test conditions Min Typ. Max Units
Operating voltage Continuous (Note 8) 1700 Vdc
Test voltage 50Hz/1min (Note 12) 4000 VAC(eff)
Partial discharge extinc tion volt. IEC270 (Note 11) >1700 VAC(pk)
Creep path input-output 20 mm
Maximum V/t at V=1000V Note 9 100 kV/µs
All data r efer to +25°C and VDD = VDC = 15V unless ot h erwis e specified
1SD1548AI
Data Sheet
Page 8 INTELLIGENT POWER ELECTRONICS
Operating Conditions
Operating conditions Test conditions Min Max Units
Operating temperature Note 10 -40 +85 °C
Storage temperature -40 +90 °C
Footnotes to the key data
1) The d rivers have a zener diode on the secondary side between VPOS – COM and COM – VNE G for
over-voltage protection. When the feed voltage exceeds 16V, this protection can be subject to
thermal overload.
2) If the specified powe r cons umption is ex ceed ed, this i ndicate s a n overload of the DC/DC co nve rt er .
It should be noted that the DC/DC converter is not protected against overload.
3) This should be considered as a recommended value. Please consult the section: “Output power
and self-heating”. Especially when the drivers produce continuously short pulses (on-time or off-
time < 1.5µs), their self-heating can be considerably increased. The maximum power of the
drivers should be reduced in this case.
4) Under-voltage monitori ng for protecting the powe r semiconductor s. The voltage refers to the local
supply voltage VPO S. However, this corresponds approxima tely to the voltage a t VDC with respe ct
to GND.
5) The input levels must never exceed the limits of the supply voltage (i.e. between GND and VDD),
otherwise latch-up o f the i nte grat ed cir cuits LDI00 1 ca n occur . P arti cular ca re m us t be t aken w hen
driving via cables or l onge r leads. See also ap p lication note AN-99 01 on www.IGBT-Driver.com.
6) The gate current must be limited to its maximum value by a gate resistor.
7) First value: At a load of 94 nF in series with 1.95Ω. Second va lue: At a load of 660nF in series wit h
0.6 Ω
8) Maximum continuous or repeatedly applied DC voltage or peak value of the repeatedly applied AC
voltage between all inputs and all outputs. However, types that have been measured and selected
for higher partial-discharge voltages are also available (see note 11).
9) This specification guarantees that the drive information will be transferred reliably even at a high
DC-link voltage and fastest switching operations.
10) The application-specific self-heating of the drivers – especially at high load – must be taken into
account.
11) The partial discharge is not measured for the standard types. Tested and selected types with
guaranteed partial-discharge immunity can be supplied for applications with maximum
requirements and higher ope r ating voltages (such as railroad applications).
12) The test voltage of 4000 V ac(rms)/50Hz may be applied only once during one minute. It should be
noted that with this (strictly speaking obsolete) test method, some (minor) damage occurs to the
insulation layers due to the partial discharge . Conseque ntly, this test is not perfor med at CONCE PT
as a series test. In the case of repeated insulation tests (e.g. module test, equipment test, system
test), the subsequent tests should be performed with a lower test voltage: the test voltage is
reduced by 400V for each additional test. The more modern if more elaborate partial-discharge
measurement is be tter suited than such test methods as it is almost entirely non -destructive.
13) The typi cal blocking time after a n error is 1 second. If required, versions with othe r blocking times
may also be supplied.
1SD1548AI
Data Sheet
IGBT-Driver.com Page 9
Application Hints
IMPORTANT INFORMAT ION
This data sheet contains only product-specific data. All data that apply to the whole
type series of SCALE drivers are given in the document entitled: “Description and
Application Manual for SCALE Drivers”. In particular, this manual contains a
detailed description of the concept of the SCALE drivers, a description of the function of
all terminal pins as w ell as o ther important application hints.
Note: As the 1SD1548AI is a single-channel driver, the LDI always operates in direct
mode.
Overview and application
The SCALE driver 1SD1548AI is a single-channel driver for IGBTs. The 1SD1548AI
combines compact mechanical dimensions and a simple electrical interface with very
high output currents, very high drive power and a special high insulation. This driver
can thus be used in almost all conceivable applications, especially for parallel-driving
high-power IGBT modules with reverse voltages up to 1700V.
Output p ower and sel f -heating
The specified output power of the driver totals 15W. This typically suffices to drive a
1200A/1200V IGBT modu le with 40k Hz. In the case of a drive p ower of 15W, the ty pica l
input power of the driver is about 18W; the losses due to the driver total about 3W.
Because CONCEPT cannot predict how the drivers will be incorporated in the user’s
application, no binding recommended value for self-heating and thus for the maximum
useful output power at high ambient temperatures can be given. It is consequently
recommended to check the self-heating of the system, especially when it is used at
higher temperatures and if the driver is used with short pulses (on-time or off-time<
1.5 µs) continuously.
For calculating the exact output power, reference should be made to Application Note
AN-9701 “IGBT drivers correctly calculated” on www.igbt-driver.com/go/app-note.
1SD1548AI
Data Sheet
Page 10 INTELLIGENT POWER ELECTRONICS
Collector sense and di men si on ing of Rth
The 1SD1548AI driver has a collector-sense circuit to protect the power semicon-
ductor s. It is sho wn in Fig. 4.
Its basic operating mode can be obtained from the brochure entitled: “Description and
Application Manua l for Scale Drivers”.
To correspond more effectively to the turn-on characteristic of the IGBTs, the SCALE
drivers do not use a static reference voltage to compare the voltage at the collector.
Instead, the reference is used as shown in Fig. 5.
Fig. 4 Collector-sense circuit princ i ple
In order to ensure that the 1SD1548AI can be applied as universally as possible, the
components Ca (response time capacitor) and Rm (attenuation resistor) are not
integrated in the driver as shown in Fig. 4, but must be connected externally. Whereas
Ca can be matched to the specific application, a standard value of 180Ω is
recommended for Rm. The ground terminal of Ca should be connected to the COM pin.
Rm
180R
Ca
C
Rth
G
E
Rth
RG
Dm
(2 x 1N4007)
SCALE Driver 1SD1548AI
150uA1,4mA
OVERCURRENT
MEASURING
+VPOS+VPOS
Ex te r na l Circuit
1SD1548AI
Data Sheet
IGBT-Driver.com Page 11
Notes on Table 1
The values for “Vth1” and “Vth2” are
listed in Table 1 as a function of the
reference resistan ce Rth.
The value in the “Vth1” column cor-
responds to the voltage threshold
after the response t i me has elapsed .
The value in the “Vth2” column cor-
responds to the voltage which is set
up statically across the resistor Rth.
This static value is typically reached
after between 10 and 15 µs.
The value in the VCE(off) column
corresponds to the collector-emitter
voltage value at which the protection
function is activated when the
external circuit is used as shown in
Fig. 4 with one or two Dm diodes of
type 1N4007 connected in series.
A value of 1n5 is used for the
response time capacitor Ca. If this
capacitor is rated higher or lower, the
response time changes in proportion
to the change in capacitance, whereas
the thresholds Vth1 and Vth2 remain
practically unchanged (they are
specified by Rth).
Value Rth
Response
time
Vth1
Vth2
V
CE
(off)
22k
≈ 4.9µs
≈ 4.8V
≈ 3.2V
2.35V (1 diode)
27k
≈ 5.7µs
≈ 5.6V
≈ 3.9V
3.05V (1 diode)
33k
≈ 6.8µs
≈ 6.5V
≈ 4.7V
3.25V (2 diodes)
39k
≈ 7.6µs
≈ 7.3V
≈ 5.6V
4.15V (2 diodes)
47k
≈ 9µs
≈ 8.4V
≈ 6.8V
5.35V (2 diodes)
Table 1 Reference resistor, respo n se time and t u rn-off t hr eshol d with Ca = 1n5
+Vdc
0V Vth
Response tim e
Detail view
Detail
0V
Vce
Vth1
Vce Vth2
Fig. 5 Collector-sense volta ge curv e
1SD1548AI
Data Sheet
Page 12 INTELLIGENT POWER ELECTRONICS
Double or mu l t ipl e pins
Due to the high power and output current and to provide low-inductance
interconnections, several pins are present in duplicate or as multiples. It is strictly
recommended to connect these in parallel on the layout so that the voltage drop across
the lead frames (contact pins) is minimiz ed .
Moreover, input pins 21 and 22 must also be connected to VDC.
Special terminal pins
The 1SD1548AI driver is optimized for universal use and high driver performance and
thus contains more terminal pins than the compact SCALE drivers. These pins will be
described below:
VPOS, COM a n d VNEG pins: external support cap acitor
Like the compact SCALE drivers, the 1SD1548AI also has blocking capacitors on the
secondary side of the DC/DC converter. IGBTs with gate charges up to 12µC
(corresponding typically to about a 1200V/1200A module) can be driven without
external blocking capacitors. At higher gate charges, external blocking capacitors are
required between VPOS – COM and COM – VNEG. These capacitors should be rated
between 10 and 42µF (but not more than 84 µF) with a dielectric strength of 20V. It is
important for the capacitors to be suitable for switched-mode power su pply applicati ons
(low inductance and high current handling capability). They must be connected as
closely as possible to the driver’ s terminal pi ns w i th minimum inductance.
The anode of the capacitor is connected to VPOS (COM), its cathode to COM (VNEG).
VDC and G ND pins: supply for DC/DC con vert er
It is recom me n de d to con ne c t a bl ock in g cap aci tor of appr ox i matel y 22 0 µF to the driver
input. This capacitor should also be of the switched-mode power supply type.
Pin LS: Local status
The status of the IGD 001 is available at this output. It is an open-collector output to
which approximately 5mA may be applied. A LED can be connected here, for example,
as shown in Fig. 6. The LED lights up in normal operation (everything OK) and goes out
when the driver d etects an und ervoltag e or during the blocking time.
1SD1548AI
Data Sheet
IGBT-Driver.com Page 13
3k3
SCALE Driver
VPOS
LS
LED OK
Insulated +16V
Ds
COM
Fig. 6 Status displa y wit h LED at pin LS
Caution:
The Schottky diode Ds should not be omitted if the local status output is used. If the
local status output is not used, LS should be connected to COM in order to increase the
noise immunity o f the driver.
Pin AC: Enhanced active clamping
Pin AC allows the basic active clamping function of the driver to be improved (see
Fig. 1). If it is not used, it should be connected to VNEG.
As the appropriate dimensioning of improved active clamping is complex, time-
consuming and not necessary for most applications, CONCEPT does not support this
feature. However, if this function should be required, or for more information, please
contact CONCEPT’s technical support.
Configu ra tion within th e power section
The drivers should be located as closely as possible to the power transistors. The
connecting leads to the transistors should be as short as possible and as low inductance
as possible, i.e. they can be up to 3 cm to 10 cm long depending on the gate current
and swit ching speed.
1SD1548AI
Data Sheet
Page 14 INTELLIGENT POWER ELECTRONICS
If you need any help, simply call our technical support
CONCEPT provides expert help with your questions and problems:
www.IGBT-Driver.com/go/support
Quite Spec i a l : Cust omi zed SCALE Dri vers
If you need an IGBT driver that is not included in the delivery range, please don’t
hesitate to contact CONCEPT or your CONCEPT sales partner.
CONCEPT engineers have more than 20 years experience in the development and
manufacture of intelligent gate drivers for power MOSFETs and IGBTs and have already
implemented a large number of c ustomized solutions.
Important Notice
The data contained in this product data sheet is intended exclusively for technically
trained staff. Handling all high-voltage equipment involves risk to life. Strict compliance
with the respective safety regulations is mandatory!
Any handling of electronic devices is subject to the general specifications for protecting
electrostatic-sensitive devices according to international standard IEC 747-1, Chapter IX
or European standard EN 100015 (i.e. the workplace, tools, etc. must comply with
these standards). Otherwise, this product may be damaged.
Legal Disclaimer
This data sheet specifies devices but cannot promise to deliver any specific
characteristics. No warranty or guarantee is given – either expressly or implicitly –
regarding delivery, performance o r suitability.
CT-Concept Technologie AG reserves the right to make modifications to its technical
data and product specifications at any time without prior notice. The general terms and
conditions of d elivery of CT-Concept Technologie A G apply.
1SD1548AI
Data Sheet
IGBT-Driver.com Page 15
Ordering In f orma t i o n
The general terms and conditions of delivery of CT-Concept Technologie AG apply.
Type designation Description
1SD1548AI Single-Channel SCALE Driver Core
Information about Other Products
For other drivers, product documenta tion, and application support
Direct link: Please click: www.IGBT-Driver.com
Manufacturer
CT-Concept Technologie AG
Intelligent Power Electronics
Renferst ra sse 15
CH-2504 Biel-Bienne
Switzerland
Tel. +41 - 32 - 344 47 47
Fax +41 - 32 - 344 47 40
E-mail Info@IGBT-Driver.com
Internet www.IGBT-Driver.com
Copyright 2003…2009 by CT-Concept Technologie AG - Switzerland. A ll r ig hts reserved.
We reserve the right to make any technical modifications without prior notice. Version from 2016-05-20
