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参数资料
| 型号： | PT4499C |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 电源模块 |
| 英文描述： | 1-OUTPUT 100 W DC-DC BOOSTER MODULE |
| 封装： | SIP-26 |
| 文件页数： | 4/8页 |
| 文件大小： | 175K |
| 代理商： | PT4499C |
For technical support and more information, see inside back cover or visit www.ti.com
Application Notes
Increasing the Output Current of the PT4482
with the PT4499 Compatible Current Booster
The PT4499 is a 30-A “Current Booster” module
designed specifically for the PT4482 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 PT4482 converter. Each booster
module increases the available output current by
30A. A combination of one PT4482 converter and
two PT4499 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 PT4482 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 PT4499 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.
PT4482, PT4499
PT4499
PT4482
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
+
相关PDF资料 |
PDF描述 |
|---|---|
| PT4499A | 1-OUTPUT 100 W DC-DC BOOSTER MODULE |
| PT4483A | 1-OUTPUT 100 W DC-DC REG PWR SUPPLY MODULE |
| PT4483C | 1-OUTPUT 100 W DC-DC REG PWR SUPPLY MODULE |
| PT4484N | 1-OUTPUT 100 W DC-DC REG PWR SUPPLY MODULE |
| PT4484A | 1-OUTPUT 100 W DC-DC REG PWR SUPPLY MODULE |
相关代理商/技术参数 |
参数描述 |
|---|---|
| PT4499N | 功能描述:DC/DC转换器 30A Current Booster PT4482 DC/DC Conv RoHS:否 制造商:Murata 产品: 输出功率: 输入电压范围:3.6 V to 5.5 V 输入电压（标称）: 输出端数量:1 输出电压（通道 1）:3.3 V 输出电流（通道 1）:600 mA 输出电压（通道 2）: 输出电流（通道 2）: 安装风格:SMD/SMT 封装 / 箱体尺寸: |
| PT44A08-02S | 制造商:ITT Interconnect Solutions 功能描述:Conn MIL-C-26482 Circular SKT 2 POS Solder ST Cable Mount 2 Terminal 1 Port |
| PT44A08-03PT69 | 制造商:ITT Interconnect Solutions 功能描述:Conn MIL-C-26482 Circular PIN 3 POS Solder ST Cable Mount 3 Terminal 1 Port |
| PT44A08-04P | 制造商:ITT Interconnect Solutions 功能描述:Conn MIL-C-26482 Circular PIN 4 POS Solder ST Cable Mount 4 Terminal 1 Port |
| PT44A08-33S | 制造商:ITT Interconnect Solutions 功能描述:Conn MIL-C-26482 Circular SKT 3 POS Solder ST Cable Mount 3 Terminal 1 Port |
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