17 AMP 鈥淐URRENT BOOSTER鈥?/div>
FOR PT7720 SERIES
The PT7748 is a new high-perfor-
mance 17 Amp 鈥淐urrent Booster鈥?for
the PT7720 Series housed in a 27-pin
SIP package. Multiple PT7748 boosters
will operate in parallel with the PT7720
Series boosting output current in incre-
ments of 17A . Combinations of
PT7720 and PT7748 current boosters
can easily supply enough power for virtu-
ally any multiple megaprocessor
application.
Application Notes
Mechanical Outline
Product Selector Guide
A PT7748 current booster adds a
parallel output stage driven by the
PT7720. As such, the system runs in
perfect sychronization providing a low
noise solution.
The PT7748 only operates in combi-
nation with the PT7720 series and is not a
stand-alone product. Therefore please
refer the PT7720 series data sheet for
performance specifications. The PT7748
also has the same mechanical dimensions
and package options as the PT7720 series.
Pin-Out Information
Pin Function
1
Do not connect
Do not connect
Do not connect
Do not connect
Do not connect
Do not connect
V
in
V
in
V
in
V
in
V
in
Do not connect
GND
Ordering Information
Pin Function
14
15
16
17
18
19
20
21
22
23
24
25
26
27
GND
GND
GND
GND
GND
GND
V
out
V
out
V
out
V
out
V
out
V
out
Do not connect
Sync In
PT7748t
t
Features
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
17A Current Boost
Automatically Tracks Vout of PT7720
High Efficiency
Input Voltage Range:
11V to 14V
鈥?/div>
Synchronized with PT7720
鈥?/div>
27-pin SIP Package
鈥?/div>
Run up to 4 in Parallel - 85 Amps
2
3
4
5
6
7
8
9
10
11
12
13
PT Series Suffix
(PT1234X)
Case/Pin
Configuration
Vertical Through-Hole
Horizontal Through-Hole
Horizontal Surface Mount
N
A
C
(For dimensions and PC board layout,
see Package Styles 1000 and 1010.)
Standard Application
PROGRAMMING PINS
VID0
VID1
VID2
VID3
VID4
REMOTE SENSE (+)
6 4 3 2 1
26
V
IN
L1
7 - 11
1碌H
+
27
PT7720
13 - 19
5
12
20 - 25
V
OUT
C
IN
STBY*
GND
C
OUT
+
LOAD
GND
REMOTE SENSE (-)
27
L1
7 - 11
1碌H
+
PT7748
13 - 19
20 - 25
C in = Required 560碌F electrolytic
C out = Required 1200碌F electrolytic
L1 = Optional 1碌H input choke
C
IN
C
OUT
+
Output Capacitors:
The PT7720 series requires a minimum output capacitance of 1200碌F for proper operation. Do not use Oscon type capacitors. The maximum allowable output capacitance
Is (57,000
梅
Vout)碌F, or 15,000碌F, whichever is less.
Input Filter:
An input inductor is optional for most applications. The input inductor must be sized to handle 7ADC with a typical value of 1碌H. The input capacitance must be rated for a
minimum of 4.0 Arms of ripple current when operated at maximum output current and maximum output voltage. Contact an applications engineer for input capacitor selection for
applications at other output voltages and output currents.
52
Power Trends, Inc.
27715 Diehl Road, Warrenville, IL 60555
(800) 531-5782
Fax: (630) 393-6902
http://www.powertrends.com
next
型號
版本
描述
廠商
下載
英文版
15 AMP HIGH-PERFORMANCE BIG HAMMER PROGRAMMABLE ISR
TI
英文版
15 AMP HIGH-PERFORMANCE BIG HAMMER PROGRAMMABLE ISR
TI [Texas ...
英文版
15 AMP HIGH-PERFORMANCE BIG HAMMER PROGRAMMABLE ISR
TI
英文版
15 AMP HIGH-PERFORMANCE BIG HAMMER PROGRAMMABLE ISR
TI [Texas ...
英文版
15 AMP HIGH-PERFORMANCE BIG HAMMER PROGRAMMABLE ISR
TI
英文版
15 AMP HIGH-PERFORMANCE BIG HAMMER PROGRAMMABLE ISR
TI [Texas ...
英文版
18 AMP “BIG-HAMMER” PROGRAMMABLE INTEGRATED SWITCHING REGU...
TI
英文版
18 AMP “BIG-HAMMER” PROGRAMMABLE INTEGRATED SWITCHING REGU...
TI [Texas ...
英文版
18 AMP “BIG-HAMMER” PROGRAMMABLE INTEGRATED SWITCHING REGU...
TI
英文版
18 AMP “BIG-HAMMER” PROGRAMMABLE INTEGRATED SWITCHING REGU...
TI [Texas ...
英文版
18 AMP “BIG-HAMMER” PROGRAMMABLE INTEGRATED SWITCHING REGU...
TI
英文版
18 AMP “BIG-HAMMER” PROGRAMMABLE INTEGRATED SWITCHING REGU...
TI [Texas ...
英文版
20 Amp Programmable Next Generation Big Hammer
TI
英文版
20 Amp Programmable Next Generation Big Hammer
TI [Texas ...
英文版
20 Amp Programmable Next Generation Big Hammer
TI
英文版
20 Amp Programmable Next Generation Big Hammer
TI [Texas ...
英文版
20-A Programmable Integrated Switching Regulator
TI [Texas ...
英文版
20 Amp 3.3V-Input Next Generation ＇Big Hammer＇ Programmabl...
ETC
英文版
20 Amp Programmable Next Generation ig hammer
英文版
20-A 1.8V to 2.55V 3.3V-Input Programmable ISR
ETC
1
2
