- 您现在的位置：买卖IC网 > PDF目录1881 > TLE7368-3E (Infineon Technologies)IC PS SYSTEM MULTI VOLT PGDSO-36 PDF资料下载
参数资料
| 型号： | TLE7368-3E |
| 厂商： | Infineon Technologies |
| 文件页数： | 24/41页 |
| 文件大小： | 0K |
| 描述： | IC PS SYSTEM MULTI VOLT PGDSO-36 |
| 标准包装： | 1,000 |
| 应用： | 电源，汽车应用 |
| 输入电压： | 4.5 V ~ 45 V |
| 输出数： | 3 |
| 输出电压： | 5V，3.3V，1.3V |
| 工作温度： | -40°C ~ 150°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 36-BSSOP（0.433"，11.00mm 宽）裸露焊盘 |
| 供应商设备封装： | PG-DSO-36 |
| 包装： | 带卷 (TR) |
| 其它名称： | SP000794336 TLE73683EFUMA1 TLE73683EXUMA1 |
第1页第2页第3页第4页第5页第6页第7页第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页当前第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页第36页第37页第38页第39页第40页第41页
TLE7368
Detailed Internal Circuits Description
5
Detailed Internal Circuits Description
In the following the main circuit blocks of the TLE7368, namely the Buck converter, the linear regulators, the
trackers, the charge pump, the enable and reset circuits and the watchdog are described in more detail.
5.1
Buck Regulator
The TLE7368’s DC to DC converter features all the functions necessary to implement a high efficient, low emission
Buck regulator with minimum external components. The step down regulator in the TLE7368 follows a concept
similar to the one of its predecessor, TLE6368, which allows operation over a battery voltage range from as low
as 4.5 V up to a maximum of 45 V at peak currents of 2.5 A at minimum. Figure 3 shows the block diagram of the
converter with its major components, i.e. the internal DMOS power stages, the high side driver including its supply
scheme, the power stage slope control circuit for reduced EME, the current mode control scheme and various
protection circuits for safe converter operation.
5.1.1
Buck Regulator Control Scheme
The step down converter’s control method is based upon the current mode control scheme. Current mode control
provides an inherent line feed forward, cycle by cycle current limiting and ease of loop compensation. No external
compensation components are needed to stabilize the loop, i.e. the operation of the Buck converter. The slope
compensation circuit in addition to the current sense amplifier and the error amplifier prevents instabilities/sub
harmonic oscillations at duty cycles higher than 0.5. The cycle by cycle current limiting feature supports also a soft
start feature during power up. Additional implemented current blanking prevents faulty DMOS turn off signals
during switching operation.
5.1.2
High Side Driver Supply and 100% Duty Cycle Operation
The supply concept of the Buck converter’s power stage driver follows the Bootstrapping principle. A small external
capacitor, placed between pins SW and BST, is used to provide the necessary charge at the gate of the power
stage. The capacitor is refreshed at each switching cycle while the power stage is turned off resulting in the ability
to power the gate at the next turn on of the power stage.
In cases where the input/battery voltage approaches the nominal Buck converter output voltage, the duty cycle of
the converter increases. At the point where the power stage is statically turned on (100% duty cycle) a refresh of
the Bootstrap capacitor as described above is not possible. In this case the charge pump helps to accomplish the
gate over drive in order to keep the power stage turned on with low R dson . With decreasing input voltage, shortly
before switching to 100% duty cycle, the device operates in pulse skipping mode. In this mode the device appears
to be operating at much lower frequencies with very small duty cycles. In real, the device is doing a few 100% duty
cycle periods followed by a period with a duty cycle smaller than 1.
Data Sheet
24
Rev. 2.1, 2010-11-22
相关PDF资料 |
PDF描述 |
|---|---|
| TLV1117LV25DCYT | IC REG LDO 2.5V 1A SOT223-4 |
| TLV431BH6TA | IC VREF SHUNT ADJ SC-70-6 |
| TLV70018QDDCRQ1 | IC REG LDO 1.8V .2A SOT23-5 |
| TLV70430DBVT | IC REG LDO 3V .15A SOT23-5 |
| TLV803ZDBZT | IC VOLT SUPERVISR 2.25V SOT23-3 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| TLE73683EXT | 功能描述:直流/直流开关转换器 DC/DC 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 |
| TLE73683EXUMA1 | 制造商:Infineon Technologies AG 功能描述:Micro Controller Supply 制造商:Infineon Technologies AG 功能描述:DC/DC CONVERTER - Tape and Reel 制造商:Infineon Technologies AG 功能描述:IC PS SYSTEM MULTI VOLT PGDSO-36 |
| TLE7368E | 功能描述:直流/直流开关转换器 DC/DC CONVERTER 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 |
| TLE7368EXUMA1 | 制造商:Infineon Technologies AG 功能描述:Micro Controller Supply 36-Pin DSO 制造商:Infineon Technologies AG 功能描述:DC/DC CONVERTER - Tape and Reel 制造商:Infineon Technologies AG 功能描述:IC PS SYSTEM MULTI VOLT PGDSO-36 |
| TLE7368G | 功能描述:直流/直流开关转换器 Next Gen Micro Controller Supply 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 |
发布紧急采购，3分钟左右您将得到回复。