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參數(shù)資料
| 型號： | PT6656Q |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 5 A SWITCHING REGULATOR, 600 kHz SWITCHING FREQ-MAX, PSMA14 |
| 封裝： | PLASTIC, SIP-14 |
| 文件頁數(shù)： | 16/19頁 |
| 文件大小： | 548K |
| 代理商： | PT6656Q |
Application Notes
For technical support and further information, visit http://power.ti.com
PT6650 Series
Adjusting the Output Voltage of the
PT6650 5-A 24-V Bus Converter Series
The output voltage of the PT6650 Series ISRs may be
adjusted higher or lower than the factory trimmed pre-
set voltage with the addition of a single external resistor.
Table 3-1 gives the allowable adjustment range for each
model in the series as Va (min) and Va (max).
Adjust Up:
An increase in the output voltage is obtained
by adding a resistor R2, between pin 14 (Vo adj) and pins
7-10 (GND).
Adjust Down:
To decrease the output voltage, add a resis-
tor (R1), between pin 14 (Vo adj) and pins 11-13 (Vout).
Refer to Figure 3-1 and Table 3-2 for both the placement and
value of the required resistor, either (R1) or R2 as appropriate.
Notes:
1. Use only a single 1 % resistor in either the (R1) or R2
location. Place the resistor as close to the ISR as possible.
2. Never connect capacitors from Vo adjust to either GND,
Vout, or the Remote Sense pin. Any capacitance added to the
Vo adjust pin will affect the stability of the ISR.
3. If the remote sense feature is being used, connecting the
resistor (R1) between pin 14 (Vo adj) and pin 1 (Remote
Sense) can benefit load regulation.
4. Adjustments to the output voltage may place additional
limits on the input voltage for the part. The revised limits
must comply with the following requirements.
Vin (min)
= (Vout + 3) V or 9 V, whichever is higher.
Vin (max)
= (10 x Vout ) V or 28 V, whichever is less.
5. For output voltages above 12.5 Vdc, the maximum output
current must be limited to 4 Adc.
The values of (R
1) [adjust down], and R2 [adjust up], can
also be calculated using the following formulae.
Ro (Vo – 1.25) (Va – 1.25)
(R1)
=
1.25 (Vo – Va)
– Rs
k
Ro (Vo – 1.25)
– Rs
k
R2
=
Va - Vo
Where: Vo = Original output voltage
Va = Adjusted output voltage
Ro = The resistance value in Table 3-1
Rs = The series resistance from Table 3-1
Figure 3-1
Table 3-1
PT6650 ADJUSTMENT AND FORMULA PARAMETERS
Series Pt #
PT6652
PT6651
PT6653
PT6654
PT6656
PT6655
Vo (nom)
2.5 V
3.3 V
5 V
9 V
12 V
15 V
Va (min)
1.8 V
2.2 V
3 V
6 V
9 V
10 V
Va (max)
4.3 V
4.7 V
6.5 V
10.2 V
13.6 V
17 V
Ro (k
)
4.99
4.22
2.49
2
Rs (k
)
2.49
4.99
12.7
C
in
+
C
out
+
(R1)
Adj Down
R2
Adjust
Up
Vo
COM
Vin
L
O
A
D
PT6650
11,12,13
14
7,8,9,10
4,5,6
Vin
V o
GND
Vo(adj)
STBY
3
Vsense
1
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相關(guān)代理商/技術(shù)參數(shù) |
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|---|---|
| PT6656R | 功能描述:開關(guān)變換器、穩(wěn)壓器與控制器 12Vout 4A 24V-Input Adjustable ISR RoHS:否 制造商:Texas Instruments 輸出電壓:1.2 V to 10 V 輸出電流:300 mA 輸出功率: 輸入電壓:3 V to 17 V 開關(guān)頻率:1 MHz 工作溫度范圍: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel |
| PT6670 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:3.3V INPUT 20W BOOST INTEGRATED SWITCHING REGULATOR |
| PT6671 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:5V/3.3V Input 20W Boost Integrated Switching Regulator |
| PT6671B | 功能描述:REG 3.3V-5V 4A SIP HSMD HT RoHS:是 類別:電源 - 板載 >> DC DC Converters 系列:PT6670 標(biāo)準(zhǔn)包裝:10 系列:PT4570 類型:隔離 輸出數(shù):1 電壓 - 輸入（最?。?36V 電壓 - 輸入（最大）:75V Voltage - Output 1:9V Voltage - Output 2:- Voltage - Output 3:- 電流 - 輸出（最大）:3.3A 電源（瓦） - 制造商系列:30W 電壓 - 隔離:1.5kV（1500V） 特點:- 安裝類型:表面貼裝 封裝/外殼:19-SIP SMD 模塊 尺寸/尺寸:3.00" L x 1.19" W x 0.50" H（76.2mm x 30.2mm x 12.7mm） 包裝:托盤 工作溫度:-40°C ~ 85°C 效率:84% 電源（瓦特）- 最大:30W |
| PT6671D | 功能描述:開關(guān)變換器、穩(wěn)壓器與控制器 5Vout 3.3V-Input 20W Boost ISR RoHS:否 制造商:Texas Instruments 輸出電壓:1.2 V to 10 V 輸出電流:300 mA 輸出功率: 輸入電壓:3 V to 17 V 開關(guān)頻率:1 MHz 工作溫度范圍: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel |
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