mlp2n06cl ON Semiconductor, mlp2n06cl Datasheet - Page 5

• Manufacturer Part Number: mlp2n06cl
• Description: Smartdiscretes Mosfet 2 Amps, 62 Volts, Logic Level
• Manufacturer: ON Semiconductor

ACTIVE CLAMPING
realization of the popular gate−to−source and gate−to−drain
Zener diode clamp elements. Until recently, such features
have been implemented only with discrete components
which consume board space and add system cost. The
SMARTDISCRETES technology approach economically
melds these features and the power chip with only a slight
increase in chip area.
polysilicon region monolithicly integrated with, but
electrically isolated from, the main device structure. Each
back−to−back diode element provides a temperature
compensated voltage element of about 7.2 V. As the
polysilicon region is formed on top of silicon dioxide, the
diode elements are free from direct interaction with the
conduction regions of the power device, thus eliminating
parasitic electrical effects while maintaining excellent
thermal coupling.
voltage elements are strung together; the MLP2N06CL uses
8 such elements. Customarily, two voltage elements are used
to provide a 14.4 V gate−to−source voltage clamp. For the
SMARTDISCRETES technology can provide on−chip
In practice, back−to−back diode elements are formed in a
To achieve high gate−to−drain clamp voltages, several
0.01
PULSE GENERATOR
1.0
0.1
R
gen
1.0E−05
0.02
SINGLE PULSE
D = 0.5
Figure 10. Switching Test Circuit
0.05
0.1
0.2
50W
0.01
1.0E−04
z = 50 W
V
in
Figure 9. Thermal Response (MLP2N06CL)
50 W
R
1.0E−03
L
DUT
V
V
DD
out
http://onsemi.com
MLP2N06CL
t, TIME (s)
5
1.0E−02
OUTPUT, V
INVERTED
MLP2N06CL, the integrated gate−to−source voltage
elements provide greater than 2.0 kV electrostatic voltage
protection.
is set less than that of the power MOSFET device. As soon
as the drain−to−source voltage exceeds this avalanche
voltage, the resulting gate−to−drain Zener current builds a
gate voltage across the gate−to−source impedance, turning
on the power device which then conducts the current. Since
virtually all of the current is carried by the power device, the
gate−to−drain voltage clamp element may be small in size.
This technique of establishing a temperature compensated
drain−to−source sustaining voltage (Figure 7) effectively
removes the possibility of drain−to−source avalanche in the
power device.
useful for snubbing loads where the inductive energy would
otherwise avalanche the power device. An improvement in
ruggedness of at least four times has been observed when
inductive energy is dissipated in the gate−to−drain clamped
conduction mode rather than in the more stressful
gate−to−source avalanche mode.
INPUT, V
The avalanche voltage of the gate−to−drain voltage clamp
The gate−to−drain voltage clamp technique is particularly
t
d(on)
P
(pk)
DUTY CYCLE, D = t
out
in
Figure 11. Switching Waveforms
t
1
t
2
10%
t
on
1.0E−01
50%
10%
1
t
/t
r
PULSE WIDTH
90%
2
R
D CURVES APPLY FOR POWER
PULSE TRAIN SHOWN
READ TIME AT t
T
J(pk)
qJC
t
(t) = r(t) R
d(off)
− T
1.0E+00
C
= P
qJC
(pk)
1
R
qJC
90%
t
50%
(t)
off
90%
t
f
1.0E+01