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| 型号： | TPS62410DRCR |
| 厂商： | Texas Instruments |
| 文件页数： | 17/33页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK SYNC ADJ 0.8A 10SON |
| 标准包装： | 1 |
| 类型： | 降压（降压） |
| 输出类型： | 可调式 |
| 输出数： | 2 |
| 输出电压： | 0.6 V ~ 6 V |
| 输入电压： | 2.5 V ~ 6 V |
| PWM 型： | 电压模式 |
| 频率 - 开关： | 2.25MHz |
| 电流 - 输出： | 800mA |
| 同步整流器： | 是 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 10-VFDFN 裸露焊盘 |
| 包装： | 标准包装 |
| 供应商设备封装： | 10-SON 裸露焊盘（3x3） |
| 产品目录页面： | 1033 (CN2011-ZH PDF) |
| 其它名称： | 296-25488-6 |
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www.ti.com
SLVS737 – FEBRUARY 2007
DETAILED DESCRIPTION (continued)
DEF_1 PIN FUNCTION
The DEF_1 pin is dedicated to converter 1 and works as an analog input for adjustable output voltage setting.
Connecting an external resistor network to this pin adjusts the default output voltage to any value starting from
0.6V to V IN .
180 ° OUT OF PHASE OPERATION
In PWM Mode the converters operate with a 180 ° turn-on phase shift of the PMOS (high side) transistors. It
prevents the high side switches of both converters to be turned on simultaneously, and therefore smooths the
input current. This feature reduces the surge current drawn from the supply.
SHORT-CIRCUIT PROTECTION
Both outputs are short-circuit protected with maximum output current = I LIMF (P-MOS and N-MOS). Once the
PMOS switch reaches its current limit, it will be turned off and the NMOS turned on. The PMOS only turns on
again, once the current in the NMOS decreases below the NMOS current limit.
THERMAL SHUTDOWN
As soon as the junction temperature, T J , exceeds typically 150 ° C the device goes into thermal shutdown. In this
mode, the P and N-Channel MOSFETs are turned-off. The device continues its operation when the junction
temperature falls below the thermal shutdown hysteresis again.
EasyScale?: One Pin Serial Interface for Dynamic Output Voltage Adjustment
General
EasyScale is a simple but very flexible one pin interface to configure the output voltage of both DC/DC
converters. The interface is based on a master – slave structure, where the master is typically a μ Controller or
Application processor. Figure 27 and Table 2 give an overview of the protocol. The protocol consists of a device
specific address byte and a data byte. The device specific address byte is fixed to 4E hex. The data byte
consists of five bit for information, two address bits and the RFA bit. RFA bit set to high indicates the R equest
F or A cknowledge condition. The Acknowledge condition is only applied if the protocol was received correctly.
The advantage of EasyScale compared to other one-pin interfaces is that its bit detection is, to a large extent,
independent from the bit transmission rate. It can automatically detect bit rates between 1.7kBit/sec and up to
160kBit/sec. Furthermore, the interface is shared with the Mode/Data Pin and requires therefore no additional
pin.
Protocol
All bits are transmitted MSB first and LSB last. Figure 28 shows the protocol without acknowledge request (bit
RFA = 0), Figure 29 with acknowledge (bit RFA = 1) request.
Prior to both bytes, device address byte and data byte, a start condition needs to be applied. For this, the
Mode/Data pin needs to be pulled high for at least t Start before the bit transmission starts with the falling edge. In
case the Mode/Data line was already at high level (forced PWM Mode selection) no start condition need be
applied prior the device address byte.
The transmission of each byte needs to be closed with an End Of Stream condition for at least T EOS .
Addressable Registers
In TPS62410 two registers with a data content of 5 bits can be addressed to change the output voltage of both
converters. With 5 bit data content, 32 different values for each register are available. Table 1 shows the
addressable registers if DEF_1 pin acts as analog input with external resistors connected.
The available output voltages for converter 1 are shown in Table 3 , for converter 2 in Table 4 . To generate these
output voltages, a precise internal resistor divider network is used, which makes external resistors unnecessary
and results therefore in an higher output voltage accuracy and less board space.
17
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相关代理商/技术参数 |
参数描述 |
|---|---|
| TPS62410DRCRG4 | 功能描述:直流/直流开关调节器 2.25MHZ 2x800mA Dual St-Down Cnvrtr RoHS:否 制造商:International Rectifier 最大输入电压:21 V 开关频率:1.5 MHz 输出电压:0.5 V to 0.86 V 输出电流:4 A 输出端数量: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:PQFN 4 x 5 |
| TPS62410DRCT | 功能描述:直流/直流开关调节器 2.25MHZ 2x800mA Dual Step-Down RoHS:否 制造商:International Rectifier 最大输入电压:21 V 开关频率:1.5 MHz 输出电压:0.5 V to 0.86 V 输出电流:4 A 输出端数量: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:PQFN 4 x 5 |
| TPS62410DRCT | 制造商:Texas Instruments 功能描述:IC DUAL STPDN CONV 2X0.8A 10SON 制造商:Texas Instruments 功能描述:IC, DUAL STPDN CONV 2X0.8A 10SON 制造商:Texas Instruments 功能描述:IC, DUAL STPDN CONV 2X0.8A 10SON; Primary Input Voltage:6V; No. of Outputs:2; Output Voltage:6V; Output Current:800mA; Voltage Regulator Case Style:SON; No. of Pins:10; Operating Temperature Min:-40C; Operating Temperature Max:85C;;RoHS Compliant: Yes |
| TPS62410DRCTG4 | 功能描述:直流/直流开关转换器 2.25MHZ 2x800mA Dual St-Down Cnvrtr RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
| TPS62410Q1-EVM | 功能描述:EVALUATION MODULE 制造商:texas instruments 系列:* 零件状态:在售 标准包装:1 |
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