LT1166CS8 Linear Technology, LT1166CS8 Datasheet - Page 11

• Manufacturer Part Number: LT1166CS8
• Description: IC BIAS SYS AUTO PWR-OUTPT 8SOIC
• Manufacturer: Linear Technology

Specifications of LT1166CS8

• Configuration: High and Low Side, Synchronous
• Input Type: Non-Inverting
• Number Of Configurations: 1
• Number Of Outputs: 2
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (3.9mm Width)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Voltage - Supply: -
• Delay Time: -
• Current - Peak: -
• High Side Voltage - Max (bootstrap): -

APPLICATIONS
Parallel Operation
Parallel operation is an effective way to get more output
power by connecting multiple power drivers. All that is
required is a small ballast resistor to ensure current
sharing between the drivers and an isolation inductor to
keep the drivers apart at high frequency. In Figure 14 one
power slice can deliver 6A at 100V
16 . The addition of another slice boosts the power
output to 600W RMS into 8 and the addition of two or
more drivers theoretically raises the power output to
1200W RMS into 4 . Due to IR loss across the sense
V
***
IN
**
*
110V
0.1% RESISTORS
4 TURNS T37-52 (MICROMETALS)
6 TURNS T80-52 (MICROMETALS)
AC
LT1004-2.5
LT1004-2.5
–12.5V
12.5V
–15V
15V
~
~
BRIDGE
DIODE
+
–
U
R14
1k
390
390
R15
R16
AUXILARY SUPPLIES
+
+
INFORMATION
C7
1000 F
35V
C8
1000 F
35V
U
C4
0.1 F
9.1k
10k
R7*
R9*
+
+
7815
7915
10 F
10 F
PK
W
3
2
, or 300W RMS into
R10*
–
+
R8*
1k
1k
LT1360
Figure 14. 350W Shaker Table Amplifier
+
+
C5
220 F
25V
C6
220 F
25V
7
4
R13
200
C3
3300pF
U
15V
–15V
6
180 H
FB
FB
resistors, the FET R
sagging of the power supply, the circuit of Figure 14
actually delivers 350W RMS into 8 . Performance photos
and a THD vs frequency plot are included in Figure 15
through 18. Frequency compensation is provided by the
2k input resistor, 180 H inductor and the 1nF compensa-
tion capacitors. The common node in the auxiliary power
supplies is connected to amplifier output to generate the
floating 15V supplies.
R
2k
IN
1nF
2
V
IN
V
LT1166
BOTTOM
1nF
V
TOP
SENSE
SENSE
POWER SLICE
1
4
I
I
V
LIM
LIM
OUT
+
+
–
–
2N3906
2N3904
R1
100
R12
100
8
7
3
6
5
POWER SLICE
ON
100
100
R2
R11
C1
1 F
C2
1 F
resistance at 10A, and some
R5
1k
R6
1k
100V
–100V
IRF9240
IRF230
R3
0.22
R4
0.22
1166 • F14
R17
0.22
L1**
0.4 H
1
V
OUT
LT1166
10A
FAST-BLOW
L3***
1.5 H
11