TC429_13 Datasheet, PDF (1/20 Pages) Microchip Technology – 6A Single High-Speed, CMOS Power MOSFET Driver

TC429
6A Single High-Speed, CMOS Power MOSFET Driver
Features
• High Peak Output Current: 6A
• Wide Input Supply Voltage Operating Range:
- 7V to 18V
• High-Impedance CMOS Logic Input
• Logic Input Threshold Independent of Supply
Voltage
• Low Supply Current:
- With Logic ‘1’ Input – 5 mA max.
- With Logic ‘0’ Input – 0.5 mA max.
• Output Voltage Swing Within 25 mV of Ground
or V_DD
• Short Delay Time: 75 nsec max
• Available in the Space-Saving 8-Pin SOIC
Package.
• High Capacitive Load Drive Capability:
- t_RISE, t_FALL = 35 nsec max with
C_LOAD = 2500 pF
Applications
• Switch-Mode Power Supplies
• CCD Drivers
• Pulse Transformer Drive
• Class D Switching Amplifiers
Package Types
CERDIP/PDIP/SOIC
V_DD 1
INPUT 2
NC 3
GND 4
TC429
8 V_DD
7 OUTPUT
6 OUTPUT
5 GND
NC = No Internal Connection
Note: Duplicate pins must both be connected for
proper operation.
General Description
The TC429 is a high-speed, single output, CMOS-level
translator and driver. Designed specifically to drive
highly capacitive power MOSFET gates, the TC429
features a 2.5 output impedance and 6A peak output
current drive.
A 2500 pF capacitive load will be driven to 18V in
25 nsec. The rapid switching times with large
capacitive loads minimize MOSFET switching power
losses.
A TTL/CMOS input logic level is translated into an
output voltage swing that equals the supply voltage and
will swing to within 25 mV of ground or V_DD. Input volt-
age swing may equal the supply voltage. Logic input
current is under 10 µA, making direct interface to
CMOS/bipolar switch-mode power supply controllers
easy. Input “speed-up” capacitors are not required.
The CMOS design minimizes quiescent power supply
current. With a logic ‘1’ input, power supply current is
5 mA maximum and decreases to 0.5 mA for logic ‘0’
inputs.
For dual output MOSFET drivers, see the TC426/
TC427/TC428 (DS21415), TC4426/TC4427/TC4428
(DS21422) and TC4426A/TC4427A/TC4428A
(DS21423) data sheets.
For non-inverting applications, or applications requiring
latch-up protection, see the TC4420/TC4429
(DS21419) data sheet.
 2002-2012 Microchip Technology Inc.
DS21416D-page 1