ST L6384E User Manual
Features
■ High voltage rail up to 600V
■ dV/dt immunity ±50V/nsec in full temperature
range
■ Driver current capability:
– 400mA source,
– 650mA sink
■ Switching times 50/30 nsec rise/fall with 1nF
load
■ CMOS/TTL Schmitt trigger inputs with
hysteresis and pull down
■ Shut down input
■ Dead time setting
■ Under voltage lock out
■ Integrated bootstrap diode
■ Clamping on V
■
SO-8/DIP-8 packages
CC
L6384E
High-voltage half bridge driver
DIP-8 SO-8
Description
The L6384E is an high-voltage device,
manufactured with the BCD"OFF-LINE"
technology. It has an Half - Bridge Driver structure
that enables to drive N-channel Power MOS or
IGBT. The High Side (Floating) Section is enabled
to work with voltage Rail up to 600V. The Logic
Inputs are CMOS/TTL compatible for ease of
interfacing with controlling devices. Matched
delays between Low and High Side Section
simplify high frequency operation. Dead time
setting can be readily accomplished by means of
an external resistor.
Figure 1. Block diagram
H.V.
V
CC
DT/SD
2
BOOTSTRAP DRIVER
V
CC
HVG
DRIVER
UV
DETECTION
RS
1
IN
V
CC
Idt
3
Vthi
DEAD
TIME
LOGIC
LEVEL
SHIFTER
LVG
DRIVER
V
8
BOOT
C
BOOT
HVG
7
OUT
6
LVG
5
GND
4
D97IN518A
LOAD
October 2007 Rev 1 1/17
www.st.com
17
Contents L6384E
Contents
1 Electrical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.1 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.2 Thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.3 Recommended operating conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2 Pin connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
3 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3.1 AC operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3.2 DC operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3.3 Timing diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
4 Bootstrap driver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
4.1 C
selection and charging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
BOOT
5 Typical characteristic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
6 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
7 Order codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
8 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
2/17
L6384E Electrical data
1 Electrical data
1.1 Absolute maximum ratings
Table 1. Absolute maximum ratings
Symbol Parameter Value Unit
V
V
V
V
V
V
dV
out/dt
P
T
T
1. The device has an internal Clamping Zener between GND and the Vcc pin, It must not be supplied by a
Low Impedence Voltage Source.
Output voltage -3 to V
out
Supply voltage
cc
I
Supply current
s
Floating supply voltage -1 to 618 V
boot
High side gate output voltage -1 to V
hvg
Low side gate output voltage -0.3 to Vcc +0.3 V
lvg
Logic input voltage -0.3 to Vcc +0.3 V
V
i
Shut down/dead time voltage -0.3 to Vcc +0.3 V
sd
(1)
(1)
boot
- 0.3 to 14.6 V
25 mA
boot
Allowed output slew rate 50 V/ns
Total power dissipation (Tj = 85 °C) 750 mW
tot
Junction temperature 150 °C
J
Storage temperature -50 to 150 °C
s
-18 V
V
Note: ESD immunity for pins 6, 7 and 8 is guaranteed up to 900 V (Human Body Model)
1.2 Thermal data
Table 2. Thermal data
Symbol Parameter SO-8 DIP-8 Unit
Thermal Resistance Junction to ambient 150 100 °C/W
R
th(JA)
3/17
Electrical data L6384E
1.3 Recommended operating conditions
Table 3. Recommended operating conditions
Symbol Pin Parameter Test condition Min Typ Max Unit
V
out
V
BS
f
sw
V
cc
T
1. If the condition Vboot - Vout < 18V is guaranteed, Vout can range from -3 to 580V.
2. VBS = V
6 Output Voltage
(2)
8 Floating Supply Voltage
Switching Frequency HVG,LVG load CL = 1nF 400 kHz
2 Supply Voltage V
j
Junction Temperature -45 125 °C
- V
boot
out
(1)
(1)
580 V
17 V
clamp
V
4/17
L6384E Pin connection
2 Pin connection
Figure 2. Pin connection (Top view)
1
Table 4. Pin description
IN
V
CC
DT/SD
GND
2
3
4 LVG
D97IN519
8
7
6
5
N° Pin Type Function
1 IN I
2 V
cc
Logic Input: it is in phase with HVG and in opposition of phase with LVG. It
is compatible to V
voltage. [V
CC
il Max
Supply input voltage: there is an internal clamp [Typ. 15.6V]
High impedance pin with two functionalities. When pulled lower than V
[Typ. 0.5V] the device is shut down. A voltage higher than Vdt sets the
dead time between high side gate driver and low side gate driver. The
dead time value can be set forcing a certain voltage level on the pin or
connecting a resistor between pin 3 and ground. Care must be taken to
3 DT/SD I
avoid below threshold spikes on pin 3 that can cause undesired shut down
of the IC. For this reason the connection of the components between pin 3
and ground has to be as short as possible. This pin can not be left floating
for the same reason. The pin has not be pulled through a low impedance
, because of the drop on the current source that feeds Rdt. The
to V
CC
operative range is: Vdt....270K ⋅ Idt, that allows a dt range of 0.4 - 3.1µs.
4 GND Ground
V
BOOT
HVG
VOUT
= 1.5V, V
ih Min
= 3.6V]
dt
Low Side Driver Output: the output stage can deliver 400mA source and
650mA sink [Typ. Values]. The circuit guarantees 0.3V max on the pin (@
I
5 LVG O
sink
allows to omit the bleeder resistor connected between the gate and the
source of the external mosfet normally used to hold the pin low; the gate
driver ensures low impedance also in SD conditions.
6 V
O
out
High Side Driver Floating Reference: layout care has to be taken to avoid
below ground spikes on this pin.
High Side Driver Output: the output stage can deliver 400mA source and
650mA sink [Typ. Values]. The circuit gurantees 0.3V max between this pin
7 HVG O
and V
threshold. This allows to omit the bleeder resistor connected between the
gate and the source of the external mosfet normally used to hold the pin
low; the gate driver ensures low impedance also in SD conditions.
Bootstrap Supply Voltage: it is the high side driver floating supply. The
8 Vboot
bootstrap capacitor connected between this pin and pin 6 can be fed by an
internal structure named "bootstrap driver" (a patented structure). This
structure can replace the external bootstrap diode.
= 10mA) with VCC > 3V and lower than the turn on threshold. This
out
(@ I
= 10mA) with VCC > 3V and lower than the turn on
sink
5/17
Electrical characteristics L6384E
3 Electrical characteristics
3.1 AC operation
Table 5. AC operation electrical characteristcs (VCC = 14.4V; TJ = 25°C)
Symbol Pin Parameter Test condition Min Typ Max Unit
1 vs
t
on
t
onsd
t
off
t
t
High/low side driver turn-on
5,7
propagation delay
3 vs
Shut down input propagation
5,7
delay
1 vs
High/low side driver turn-off
5,7
propagation delay
5,7 Rise time CL = 1000pF 50 ns
r
5,7 Fall time CL = 1000pF 30 ns
f
V
= 0V Rdt= 47kΩ
out
V
= 0V R
out
V
= 0V R
out
V
out
= 0V R
dt
dt
= 47kΩ 250 300 ns
dt
= 146kΩ 200 250 ns
= 270kΩ 170 200 ns
200+
dt
ns
220 280 ns
3.2 DC operation
Table 6. DC operation electrical characteristcs (VCC = 14.4V; TJ = 25°C)
Symbol Pin Parameter Test condition Min Typ Max Unit
Supply voltage section
V
clamp
V
ccth1
V
ccth2
V
cchys
I
qccu
I
qcc
Bootstrapped supply voltage section
V
boot
I
QBS
I
LK
R
dson
2 Supply voltage clamping Is = 5mA 14.6 15.6 16.6 V
2 VCC UV turn on threshold 11.5 12 12.5 V
VCC UV turn off threshold 9.5 10 10.5 V
VCC UV Hysteresis 2 V
2
Undervoltage quiescent
supply current
Quiescent current Vin = 0 380 500 µA
Bootstrap supply voltage 17 V
Quiescent current IN = HIGH 200 µA
8
High voltage leakage current
Bootstrap driver on
resistance
(1)
≤ 11V 150 µA
V
cc
= V
= V
V
hvg
600V
out
boot
=
10 µA
Vcc ≥12.5V; IN = LOW 125 Ω
6/17
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