MD1213DB1 Supertex, MD1213DB1 Datasheet - Page 2

• Manufacturer Part Number: MD1213DB1
• Description: Power Management IC Development Tools MD1213 + TC6320 DEMOBOARD HIGH SPEED 100V 2A PULSER
• Manufacturer: Supertex
• Type: Power Driversr

Specifications of MD1213DB1

• Product: Power Management Modules
• Tool Is For Evaluation Of: TC6320
• Input Voltage: 100 V
• Interface Type: SMA
• Factory Pack Quantity: 1

Designing a Pulser with the MD1213
The MD1213’s output stage has separate power pins that
enable users to select the output signal’s high and low levels
independently from the supply voltages that the main part of
the circuit uses. For example, the input logic levels could be
0V and 3.3V, and the output levels may lie anywhere in the
range of ±5.0V.
Typically, the MD1213’s output has rise and fall times of
about 6.0ns when driving a 1000pF load. The output stage
is capable of peak currents of up to ±2.0A, depending on the
system’s supply voltages and load capacitance. Such high
currents are necessary to drive the input capacitances of the
output MOSFETs for fast switching speeds.
The bottom of the MD1213 12-Lead QFN package has a
thermal pad for power dissipation enhancement. It must ex-
ternally connect to the VSS pin on the PCB. This pad is con-
nected internally to the substrate of the IC circuit. It must
have the lowest potential voltage of the circuit at all times,
including during the power up or down periods, or it could
cause circuit latch-up or damage.
The Supertex TC6320 is comprised of an N- and P-channel
MOSFET pair with low threshold voltages (2.0V maximum).
This 8-Lead SO packaged device features 200V breakdown
voltage, 2.0A peak current output capabilities, and low input
capacitance (110pF maximum). The TC6320 integrates the
gate-source resistors and Zener diodes that a high voltage
pulse-driver requires. The high output current capability of
the TC6320 MOSFET speeds output waveform rise and fall
time, while their low input capacitance minimizes propaga-
tion delays.
Operating Supply Voltages
Symbol
V
V
V
V
V
V
V
SS
DD
CC
PP
NN
H
L
Supertex inc.
Parameter
Negative drive supply
Positive drive supply
Logic supply
TC6320 HV positive supply
TC6320 HV negative supply
1235 Bordeaux Drive, Sunnyvale, CA 94089
(cont.)
V
SS
-100
Min
-5.5
V
4.5
1.8
0
+2.0
SS
2
During power up/down conditions, the high voltage supplies
V
via the output transistor’s parasitic gate-to-source capaci-
tances. The maximum permissible gate-to-source voltage
(V
across its’ gate and source terminals protect against such
transient voltages. But even if it is possible to slowly ramp
the high voltage supplies, these Zener diodes are still cru-
cial, as they also serve as the DC voltage restoration stage
for the gates.
Note that it is possible to vary the V
out making significant changes to the circuit configuration.
For example, V
polar pulses. Or V
unipolar pulser. If the user plans to operate the demoboard
above 100V, he must adjust the bypass capacitors (C8 or
C16) to a voltage rating of 200V. Due to the BV limitation of
the TC6320, the differential voltage (V
greater then 200V.
Typ
3.3
10
10
PP
0
-
-
-
GS
and V
) is ±20V. The TC6320’s integral 15 - 18V Zener diodes
NN
V
DD
Max
100
V
5.5
can inject transient voltages greater than 20V
12
Tel: [phone]
0
0
DD
-2.0
NN
can be 0V and V
NN
can be -200V and V
Units
V
V
V
V
V
www.supertex.com
(V
---
Conditions
(V
---
---
PP
PP
DD
DD
+200V for positive uni-
and V
- V
- V
MD1213DB1
PP
PP
-V
SS
SS
0V for a negative
) ≤ 13
) ≤ 13
NN
NN
) must not be
voltages with-