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參數(shù)資料
| 型號： | PT4497A |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 電源模塊 |
| 英文描述： | 1-OUTPUT 100 W DC-DC BOOSTER MODULE |
| 封裝： | SIP-26 |
| 文件頁數(shù)： | 4/9頁 |
| 文件大小： | 208K |
| 代理商： | PT4497A |
For technical support and further information, visit http://power.ti.com
Application Notes
Increasing the Output Current of the PT4486
with the PT4497 Compatible Current Booster
The PT4497 is a 8.5-A “Current Booster” module
designed specifically for the PT4486 programmable
DC/DC converter. The booster is controlled directly
by the regulator, and effectively adds an additional
output stage that operates in parallel. This allows
the system to run sychronously, providing a low
noise solution. Up to two booster modules can be
connected to a PT4486 converter. Each booster
module increases the available output current by
8.5 A. A combination of one PT4486 converter and
two PT4497 booster modules can supply up to 25.5 A
of output current; enough power to supply a moder-
ately sized rack-mounted system. Figure 1-1 shows
the connection schematic for the regulator and cur-
rent booster combination.
A current booster is not a stand-alone product, and
can only operate with a regulator. It is housed in
the same package as its compatible regulator, and
shares the same mechanical outline. Except for an
increase in output current, the overall performance
of a converter/booster combination is identical to
that of a stand-alone converter.
Figure 1-1; Current Booster Application Schematic
Table 1-1; Booster Pin-Out Information
Pin
Function
Pin Function
1+Vin
10 +Vout
19 –Vout
2–Vin
11 +Vout
20 (–)Vsense
3
Do not connect
12 +Vout
21 Do not connect
4Vr
13 +Vout
22 Do not connect
5Va
14 –Vout
23 Do not connect
6
Do not connect
15 –Vout
24 Do not connect
7
Do not connect
16 –Vout
25 Do not connect
8+Vout
17 –Vout
26 DRV
9+Vout
18 –Vout
Notes:
1. Refer to the PT4486 specification table for the
performance of the regulator/booster combination.
2. The pin-out of the current booster modules include a
number pins identified, “Do not connect” (see Table 1-1).
These pins are not connected internally to the module
but must be soldered to a pad to preserve the unit’s
mechanical integrity.
3. A minimum of 33 F of output capacitance is required
across the output of each PT4497 booster for proper
operation. A value greater than 33 F will further
reduce transients due to large and/or fast load steps.
4. The converter and all boosters must be located on
the same printed circuit board. A similar footprint
and trace layout for each module will also facilitate
current sharing.
PT4486, PT4497
PT4497
PT4486
1
2
8 - 13
–V
IN
-V
OUT
+V
OUT
20
7
REMOTE SENSE (+)
REMOTE SENSE (-)
VID0
VID1
VID2
VID3
PROGRAMMING PINS
Inhibit
3
C
IN
33F
Optional
+
C
IN
33F
Optional
+
LOAD
1
8 - 13
14 - 19
+V
IN
25
VID4
24
23
22
21
14-19
2
4526
20
4526
C
OUT
33F
Optional
+
C
OUT
33F
Required 3
+
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| PT4497C | 功能描述:BOOSTER(PT448) 8.5A 48VIN HZ SMD RoHS:是 類別:電源 - 板載 >> 配件 系列:PT4480 標準包裝:1 系列:- 附件類型:測試板 適用于相關產(chǎn)品:- |
| PT4497N | 功能描述:BOOSTER(PT4486) 8.5A 48VIN VRT RoHS:是 類別:電源 - 板載 >> 配件 系列:PT4480 標準包裝:1 系列:- 附件類型:測試板 適用于相關產(chǎn)品:- |
| PT4498 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:100-W 30-A Programmable Isolated DC/DC Converter |
| PT4498A | 功能描述:BOOSTER(PT4484) 20A 48VIN HRZ RoHS:是 類別:電源 - 板載 >> 配件 系列:PT4480 標準包裝:1 系列:- 附件類型:測試板 適用于相關產(chǎn)品:- |
| PT4498C | 功能描述:BOOSTER(PT4484) 20A 48VIN HZ SMD RoHS:是 類別:電源 - 板載 >> 配件 系列:PT4480 標準包裝:1 系列:- 附件類型:測試板 適用于相關產(chǎn)品:- |
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