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参数资料
| 型号： | PT6722A |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 稳压器 |
| 英文描述： | 14 A SWITCHING REGULATOR, 400 kHz SWITCHING FREQ-MAX, SMA23 |
| 封装： | ROHS COMPLIANT, SIP-23 |
| 文件页数： | 5/8页 |
| 文件大小： | 179K |
| 代理商： | PT6722A |
Application Notes continued
For technical support and more information, see inside back cover or visit www.ti.com
Pin-Coded Output Voltage Programming on
Non-Isolated “Excalibur” Series ISRs
Programmable versions of the PT6700 and PT6720 series
of Excalibur ISRs incorporate a pin-coded output voltage
control. These regulators include up to five control pins,
identified VID0–VID4 (pins 3–7) respectively. By selectively
grounding VID0-VID4, the output voltage of these regu-
lators can be programmed in incremental steps over a
specified output voltage range. The program code and voltage
range is designed to be compatible with the “Voltage ID”
specification defined for popular microprocessors. Refer to
Figure 1 for the connection schematic, and the applicable
data sheet for the program code.
Notes:
1. The programming convention is as follows:-
Logic 0:
Connect to pin13 (Remote Sense Ground).
Logic 1:
Open circuit/open drain (See notes 2, & 4)
2. Do not connect pull-up resistors to the voltage
programming pins.
3. To minimize output voltage error, always use pin 13
(Remote Sense Ground) as the logic “0” reference. While
the regular ground (pins 14-18) can also be used for
programming, doing so will degrade the load regulation of
the product.
4. If active devices are used to ground the voltage control pins,
low-level open drain MOSFET devices should be used over
Figure 1
bipolar transistors. The inherent Vce(sat) in bipolar devices
introduces errors in the device’s internal voltage control
circuit. Discrete transistors such as the BSS138, 2N7002,
IRLML2402, are examples of appropriate devices.
Active Voltage Programming:
Special precautions should be taken when making changes
to the voltage control progam code while the unit is
powered. It is highly recommended that the ISR be either
powered down or held in standby. Changes made to the
program code while Vout is enabled induces high current
transients through the device. This is the result of the
electrolytic output capacitors being either charged or dis-
charged to the new output voltage set-point. The transient
current can be minimized by making only incremental
changes to the binary code, i.e. one LSB at a time. A
minimum of 100s settling time between each program
state is also recommended. Making non-incremental
changes to VID3 and VID4 with the output enabled is
discouraged. If they are changed, the transients induced
can overstress the device and may also activate the OVP
drive output. If the program code cannot be asserted prior
to power-up, pull pin 8 (STBY) to GND during the period
that the input voltage is applied. The release of pin 8 will
then to allow the device to initiate a soft-start power-up to
the program voltage.
C
out
+
C
in
+
1
H
(Optional)
V
in
COM
STBY
L
O
A
D
Q1
COM
V
out
PT6700
765
43
23
19-22
13
8
14-18
2
10-12
Vo
Vin
GND
SNS(+)
SNS(-)
Pwr
Good
STBY
VID4 - VID0
1
OVP
PT6701/6702/6703, & PT6721/6722
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相关代理商/技术参数 |
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| PT6722C | 功能描述:REG 1.1-1.85V 13A 12VIN SMD RoHS:否 类别:电源 - 板载 >> DC DC Converters 系列:PT6720 设计资源:Maxi/Mini/Micro Design Guide, Appl Manual 标准包装:1 系列:Maxi 类型:隔离 输出数:1 电压 - 输入（最小）:43V 电压 - 输入（最大）:110V Voltage - Output 1:15V Voltage - Output 2:- Voltage - Output 3:- 电流 - 输出（最大）:* 电源（瓦） - 制造商系列:400W 电压 - 隔离:* 特点:* 安装类型:通孔 封装/外壳:模块 尺寸/尺寸:4.60" L x 2.20" W x 0.54" H（116.8mm x 55.9mm x 13.7mm） 包装:散装 工作温度:-55°C ~ 100°C 效率:* 电源（瓦特）- 最大:* |
| PT6722N | 功能描述:REG 1.1-1.85V 13A 12VIN VERT RoHS:否 类别:电源 - 板载 >> DC DC Converters 系列:PT6720 设计资源:Maxi/Mini/Micro Design Guide, Appl Manual 标准包装:1 系列:Maxi 类型:隔离 输出数:1 电压 - 输入（最小）:43V 电压 - 输入（最大）:110V Voltage - Output 1:15V Voltage - Output 2:- Voltage - Output 3:- 电流 - 输出（最大）:* 电源（瓦） - 制造商系列:400W 电压 - 隔离:* 特点:* 安装类型:通孔 封装/外壳:模块 尺寸/尺寸:4.60" L x 2.20" W x 0.54" H（116.8mm x 55.9mm x 13.7mm） 包装:散装 工作温度:-55°C ~ 100°C 效率:* 电源（瓦特）- 最大:* |
| PT6724 | 制造商:TI 制造商全称:Texas Instruments 功能描述:14-A 12V-Input Adjustable Integrated Switching Regulator |
| PT6724A | 功能描述:开关变换器、稳压器与控制器 5Vout 13A 12V Input Adjustable ISR RoHS:否 制造商:Texas Instruments 输出电压:1.2 V to 10 V 输出电流:300 mA 输出功率: 输入电压:3 V to 17 V 开关频率:1 MHz 工作温度范围: 安装风格:SMD/SMT 封装 / 箱体:WSON-8 封装:Reel |
| PT6724C | 功能描述:开关变换器、稳压器与控制器 5Vout 13A 12V Input Adjustable ISR RoHS:否 制造商:Texas Instruments 输出电压:1.2 V to 10 V 输出电流:300 mA 输出功率: 输入电压:3 V to 17 V 开关频率:1 MHz 工作温度范围: 安装风格:SMD/SMT 封装 / 箱体:WSON-8 封装:Reel |
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