- 您现在的位置：买卖IC网 > PDF目录98283 > TPS54623RHLT (TEXAS INSTRUMENTS INC) 15 A SWITCHING REGULATOR, 1760 kHz SWITCHING FREQ-MAX, PQCC14 PDF资料下载
参数资料
| 型号： | TPS54623RHLT |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 稳压器 |
| 英文描述： | 15 A SWITCHING REGULATOR, 1760 kHz SWITCHING FREQ-MAX, PQCC14 |
| 封装： | 3.50 X 3.50 MM, GREEN, PLASTIC, QFN-14 |
| 文件页数： | 8/35页 |
| 文件大小： | 1468K |
| 代理商： | TPS54623RHLT |
第1页第2页第3页第4页第5页第6页第7页当前第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页
SS/TR
TPS54623
EN
PWRGD
SS/TR
EN
PWRGD
TPS54623
D
V out2 +
V
V ssoffset
R1 =
V ref
Iss
D
-
Vref
R1
R2 =
Vout2 +
V
Vref
V = Vout1
Vout 2
D
-
>
-
D
R1
2800
Vout1 180
V
SLVSB09
– SEPTEMBER 2011
Figure 25. Ratiometric Start Up Sequence
Ratio-metric and simultaneous power supply sequencing can be implemented by connecting the resistor network
of R1 and R2 shown in Figure 26 to the output of the power supply that needs to be tracked or another voltage
reference source. Using Equation 6 and Equation 7, the tracking resistors can be calculated to initiate the Vout2
slightly before, after or at the same time as Vout1. Equation 8 is the voltage difference between Vout1 and
Vout2.
To design a ratio-metric start up in which the Vout2 voltage is slightly greater than the Vout1 voltage when Vout2
reaches regulation, use a negative number in Equation 6 and Equation 7 for deltaV. Equation 8 results in a
positive number for applications where the Vout2 is slightly lower than Vout1 when Vout2 regulation is
achieved. .
The deltaV variable is zero volt for simultaneous sequencing. To minimize the effect of the inherent SS/TR to
VSENSE offset (Vssoffset, 29mV) in the slow start circuit and the offset created by the pull-up current source
(Iss, 2.3
μA) and tracking resistors, the Vssoffset and Iss are included as variables in the equations.
To ensure proper operation of the device, the calculated R1 value from Equation 6 must be greater than the
value calculated in Equation 9.
(6)
(7)
(8)
(9)
16
Copyright
2011, Texas Instruments Incorporated
Product Folder Link(s) :TPS54623
相关PDF资料 |
PDF描述 |
|---|---|
| TPS54672PWPG4 | 12 A SWITCHING REGULATOR, 700 kHz SWITCHING FREQ-MAX, PDSO28 |
| TPS54810PWPRG4 | 12 A SWITCHING REGULATOR, 762 kHz SWITCHING FREQ-MAX, PDSO28 |
| TPS54810PWPG4 | 12 A SWITCHING REGULATOR, 762 kHz SWITCHING FREQ-MAX, PDSO28 |
| TPS54873PWPG4 | 12 A SWITCHING REGULATOR, 762 kHz SWITCHING FREQ-MAX, PDSO28 |
| TPS54880PWPR | 12 A SWITCHING REGULATOR, 762 kHz SWITCHING FREQ-MAX, PDSO28 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| TPS54625EVM-608 | 制造商:Texas Instruments 功能描述:TPS54625EVM-608 - Boxed Product (Development Kits) 制造商:Texas Instruments 功能描述:TPS54625 EVAL MOD |
| TPS54625PWP | 制造商:Texas Instruments 功能描述: 制造商:Texas Instruments 功能描述:IC REG BUCK ADJ 6.5A 14HTSSOP 制造商:Texas Instruments 功能描述:IC SYNC STEP DOWN 650KHZ HT |
| TPS54625PWPR | 功能描述:Buck Switching Regulator IC Positive Adjustable 0.765V 1 Output 6.5A 14-TSSOP (0.173", 4.40mm Width) Exposed Pad 制造商:texas instruments 系列:D-CAP2?? 包装:剪切带（CT） 零件状态:有效 功能:降压 输出配置:正 拓扑:降压 输出类型:可调式 输出数:1 电压 - 输入（最小值）:4.5V 电压 - 输入（最大值）:18V 电压 - 输出（最小值/固定）:0.765V 电压 - 输出（最大值）:5.5V 电流 - 输出:6.5A 频率 - 开关:650kHz 同步整流器:是 工作温度:-40°C ~ 85°C（TA） 安装类型:表面贴装 封装/外壳:14-TSSOP（0.173"，4.40mm 宽）裸焊盘 供应商器件封装:14-HTSSOP 标准包装:1 |
| TPS54626EVM-608 | 制造商:Texas Instruments 功能描述:TPS54626EVM-608 - Boxed Product (Development Kits) 制造商:Texas Instruments 功能描述:TPS54626 EVAL MOD |
| TPS54626PWP | 制造商:Texas Instruments 功能描述: 制造商:Texas Instruments 功能描述:IC SYNC STEP DOWN 650KHZ HT 制造商:Texas Instruments 功能描述:18V 6.5A DCAP2 sync converter |
发布紧急采购，3分钟左右您将得到回复。