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参数资料
| 型号： | PT7772A |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 稳压器 |
| 英文描述： | 32 A SWITCHING REGULATOR, 750 kHz SWITCHING FREQ-MAX, SMA27 |
| 封装： | SIP-27 |
| 文件页数： | 1/5页 |
| 文件大小： | 109K |
| 代理商： | PT7772A |
For technical support and more information, see inside back cover or visit www.ti.com/powertrends
SLTS055A
(Revised 6/30/2000)
Standard Application
Cin = Required 2400F electrolytic
Cout = Required 680F electrolytic
L1
= Optional 1H input choke
The PT7772 is a high-output Inte-
grated Switching Regulator (ISR)
housed in a 27-pin SIP package. The
PT7772 operates from a 3.3V bus to
provide a 32 amp low-voltage power
source for the industry’s latest high-
speed Ps, ASICs, DSPs.
The PT7772 has been designed to
work in parallel with one or more of
the PT7746 -32A current boosters to
increase the load current capability in
increments of 32A.
The output voltage is program-
mable from 1.3V to 2.05V with a 4-bit
input, compatible with Intel’s Pentium
Pro Processor. A differential remote
sense is also provided, to compensate
for voltage drop between the ISR and
load.
The PT7772 requires a capacitance
of 2400F at the input, and 680F at
the output for proper operation. Note
that this product does not include short
circuit protection.
For STBY* pin; Open = output enabled
Gnd = output disabled.
Pin-Out Information
PT7772
7 - 11
13 - 19
20 - 25
27
V
IN
GND
1H
GND
V
OUT
C
OUT
+
C
IN
+
12
26
1
L1
SYNC OUT
LOAD
REMOTE SENSE (+)
REMOTE SENSE (-)
VID1
VID2
VID3
PROGRAMMING PINS
2
3
4
STBY*
5
VID0
Pin
Function
1 VID0
2 VID1
3 VID2
4 VID3
5 STBY*- Stand-by
6 Do not connect
7 V
in
8 V
in
9 V
in
10 V
in
11 V
in
12 Remote Sense Gnd
13 GND
Pin
Function
14 GND
15 GND
16 GND
17 GND
18 GND
19 GND
20 Vout
21 Vout
22 Vout
23 Vout
24 Vout
25 Vout
26 Remote Sense Vout
27 Sync Out
PT7772—3.3V
32 Amp “Sledge Hammer”
Programmable ISR
Specifications
Characteristics
PT7772 SERIES
(T
a = 25°C unless noted)
Symbols
Conditions
Min
Typ
Max
Units
Output Current
Io
Ta = +60°C, 200 LFM, pkg N
0.1 (1)
—32
A
Ta = +25°C, natural convection
0.1 (1)
—26
A
Input Voltage Range
Vin
0.1A
≤ Io ≤ 32A
3.1 (2)
—
3.6
V
Output Voltage Tolerance
Vo
Vin = +3.3V, Io = 32A
Vo-0.03
—
Vo+0.03
V
0°C
≤ Ta ≤ +55°C
Line Regulation
Regline
3.1V
≤ Vin ≤ 3.6V, Io = 32A
—
±10
—
mV
Load Regulation
Regload
Vin = +3.3V, 0.1 ≤ Io ≤ 32A
—
±10
—
mV
Vo Ripple/Noise pk-pk
Vn
Vin = +3.3V, Io = 32A
—
50
—
mV
Transient Response
ttr
Cout =680F,
Io =25% load step from 24A
—
100
—
s
Vos
Vo over/undershoot
—
200
—
mV
ttr
Cout =2400F, Io =50% load step from 16A
—
100
—
s
Vos
Vo over/undershoot
—
200
—
mV
Efficiency
η
Vin = +3.3V, Io = 20A, Vo = 1.8V
—
90
—
%
Switching Frequency
o
3.1V
≤ Vin ≤ 3.6V
650
700
750
kHz
0.1A
≤ Io ≤ 32A
Absolute Maximum
Ta
—
0
—
+85
(3)
°C
Operating Temperature Range
Storage Temperature
T s
—
-40
—
+125
°C
Weight
—
Vertical/Horizontal
—
53/66
—
grams
Notes: (1) The ISR will operate down to no load with reduced specifications.
(2) The minimum input voltage is 3.1V or V
out+1.2V, whichever is greater.
(3) See Safe Operating Area curves for appropriate derating.
Output Capacitors: The PT7772 series requires a minimum output capacitance of 680F for proper operation. Do not use Oscon type capacitors.
The maximum allowable output capacitance is 30,000F.
Input Filter: An input filter is optional for most applications. The input inductor must be sized to handle 32ADC with a typical value of 1H.
The input capacitance must be rated for a minimum of 2.6Arms of ripple current. For transient or dynamic load applications, additional
capacitance may be required.
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| PT7777N | 32 A SWITCHING REGULATOR, 750 kHz SWITCHING FREQ-MAX, SMA27 |
| PT7777A | 32 A SWITCHING REGULATOR, 750 kHz SWITCHING FREQ-MAX, SMA27 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| PT7772C | 功能描述:开关变换器、稳压器与控制器 PROGRAMMABLE 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 |
| PT7772N | 功能描述:REGU32A 1.30-2.05V 4BIT 680UF VE RoHS:否 类别:电源 - 板载 >> DC DC Converters 系列:PT7770 标准包装:10 系列:PT4570 类型:隔离 输出数:1 电压 - 输入（最小）:36V 电压 - 输入（最大）:75V Voltage - Output 1:9V Voltage - Output 2:- Voltage - Output 3:- 电流 - 输出（最大）:3.3A 电源（瓦） - 制造商系列:30W 电压 - 隔离:1.5kV（1500V） 特点:- 安装类型:表面贴装 封装/外壳:19-SIP SMD 模块 尺寸/尺寸:3.00" L x 1.19" W x 0.50" H（76.2mm x 30.2mm x 12.7mm） 包装:托盘 工作温度:-40°C ~ 85°C 效率:84% 电源（瓦特）- 最大:30W |
| PT7773 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:0.8V to 3.1V 32 Amp High-Performance Programmable ISR |
| PT7773A | 功能描述:DC/DC转换器 PROGRAMMABLE ISR 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: |
| PT7773C | 功能描述:开关变换器、稳压器与控制器 PROGRAMMABLE 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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