IX6610
Transformer Coupled
Driver Logic Interface
Features
Description
• TTL Logic level micro-controller Interface
• Pulse transformer bidirectional data interface
• Short input pulse suppression
• Interlock and dead time control
• Four 1A pulse transformer drivers
• Two 1A drivers for push-pull power converter for the
secondary side power supply
• Non-overlap operation of high side and low side
drivers
• Internal startup oscillator
The IX6610 is a primary side logic interface device
that implements a dual channel bidirectional
transformer interface to drive a secondary side
intelligent IGBT driver. The bidirectional transformer
interface transmits the primary side input commands,
secondary side output faults, and power supply faults.
Asynchronous data transmission is through high
frequency narrow pulses to avoid duty cycle
restrictions, to achieve shorter delays, and to prevent
any transformer core saturation issues. The IX6610
contains all the necessary blocks to implement a
power converter that supplies isolated power to the
secondary side IGBT drivers. IX6610 is a primary side
device with built-in interlock and dead time control that
can be interfaced directly to a low voltage
• Primary side fault monitoring
• Secondary side fault monitoring
• Two fault status outputs
• 2mA quiescent current (non- switching)
microcontroller to provide input signal conditioning as
well as fault management.
Applications
• Pulse transformer coupled IGBT/MOSFET gate
driver interface
The IX6610 operates over a temperature range of
-40°C to +85°C. The IX6610 is available in either
28-lead TSSOP with exposed pad or as tested die.
IX6610 Block Diagram
28 PGND1
27 TRDCN
Ordering Information
Softstart Control
PGND1
TRDCP
1
Output Power Select
Part
Description
PGND1
PGND1
GND
2
3
Watchdog
Timer
IX6610T
28-Pin TSSOP, in Tubes, Exposed Tab (50/Tube)
MODE
IX6610TR 28-Pin TSSOP, Exposed Pad, Tape & Reel (1000/Reel)
IX6610 Tested Die
VDD
RCVAP
RCVAN
RCVBP
26
POR
FLTRST
RESET
4
5
THSD
RST
Reset
Generator
25
24
Oscillator
Clock
Select
CLK
6
23 RCVBN
EN2
VDD
Power Supply
Fault Logic
FAULT1
7
OVLO
UVLO
22
VIN
VDD
Output Fault
Logic
21 VAUX
FAULT2
RBIAS
8
9
Internal
VREF
Start-Up
Regulator
20 TEST
Precision
Current
Generator
+
-
VDD
vbg
3.3V
LDO
vbg
19
18
VDD
CB
Soft-Start
Control
INB 10
Dead Time
Generator
INA
11
TRAP
12
13
17
TRBP
Channel A
Leading Edge Pulse
Channel B
Leading Edge Pulse
PGND2
PGND2
PGND2
16 TRBN
TRAN
Channel B
Trailing Edge Pulse
Channel A
Trailing Edge Pulse
PGND2
PGND2
CA
15
PGND2 14
DS-IX6610-R00A
PRELIMINARY
1