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參數(shù)資料
| 型號(hào)： | PT4495C |
| 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： | METAL, SMD-26 |
| 文件頁(yè)數(shù)： | 4/7頁(yè) |
| 文件大?。?/td> | 154K |
| 代理商： | PT4495C |
For technical support and more information, see inside back cover or visit www.ti.com
Application Notes
Increasing the Output Current of the PT4472
with the PT4495 Compatible Current Booster
The PT4495 is a 30-A “Current Booster” module
designed specifically for the PT4472 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 PT4472 converter. Each booster
module increases the available output current by
30A. A combination of one PT4472 converter and
two PT4495 booster modules can supply up to 90A
of output current; enough to supply virtually any
multi-processor application. Figure 1-1 shows
the connection schematic for the regulator and
current 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 PT4472 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 330F of output capacitance is required
across the output of each PT4495 booster for proper
operation. A value greater than 330F 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.
PT4472, PT4495
PT4495
PT4472
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
330F
Optional
+
C
OUT
330F
Required 3
+
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| PT4495N | 功能描述:CONVERTER 30A BOOSTER PT4472 VRT RoHS:是 類別:電源 - 板載 >> 配件 系列:PT4470 標(biāo)準(zhǔn)包裝:1 系列:- 附件類型:測(cè)試板 適用于相關(guān)產(chǎn)品:- |
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| PT4497A | 功能描述:BOOSTER(PT4486) 8.5A 48VIN HRZ RoHS:是 類別:電源 - 板載 >> 配件 系列:PT4480 標(biāo)準(zhǔn)包裝:1 系列:- 附件類型:測(cè)試板 適用于相關(guān)產(chǎn)品:- |
| 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(biāo)準(zhǔn)包裝:1 系列:- 附件類型:測(cè)試板 適用于相關(guān)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(biāo)準(zhǔn)包裝:1 系列:- 附件類型:測(cè)試板 適用于相關(guān)產(chǎn)品:- |
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