- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄69522 > TPS65573DSSR (TEXAS INSTRUMENTS INC) 1.5 A SWITCHED CAPACITOR CONVERTER, PDSO12 PDF資料下載
參數(shù)資料
| 型號： | TPS65573DSSR |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 1.5 A SWITCHED CAPACITOR CONVERTER, PDSO12 |
| 封裝： | 2 X 3 MM, SON-12 |
| 文件頁數(shù)： | 16/16頁 |
| 文件大?。?/td> | 681K |
| 代理商： | TPS65573DSSR |
IGBT Driver Control
Protection
www.ti.com................................................................................................................................................................................................... SLVS868 – MARCH 2009
Typical usages of this function are:
Setting the peak charging currents based on the battery voltage. The easiest way is to connect a resistive
divider with battery voltage. This saves battery life.
Reducing peak current at the primary side when the system powers a zoom-lens motor. This avoids
inadvertent shutdowns due to a large current from the battery.
In Figure 1, three optional connections to I_PEAK are shown:
1. Use the controller to input PWM signal with RC filter.
2. Use a digital-to-analog converter (DAC).
3. Use a resistive divider to input a fixed value into I_PEAK.
Methods 1 and 2 make it possible to delicately control peak current at the primary side. For example, set higher
current during initial charging, but set lower current just before complete charging. This effectively saves the
battery life.
The TPS65573 integrates an IGBT driver for flashing the xenon tube. After charge completion, the xenon tube
allows turnon with the IGBT driver. If the earlier flashing is needed before charge completion, the confirmation of
the lowest allowable flashing voltage to apply to the xenon tube is required.
G_IGBT should be connected to the gate of IGBT as close as possible to avoid the misoperation of flashing or
breaking the gate of IGBT. The output voltage of G_IGBT voltage depends on IGBT_VCC. The rise time and fall
time of G_IGBT are almost the same because the TPS65573 does not include a pullup/pulldown resistor for the
IGBT driver. The rise time and fall time should be met with the value specified in the data sheet of the IGBT to
avoid breaking the IGBT.
The IGBT drive hasone logic input, named F_ON. To turn on the xenon tube, high-level signal should be inputted
into both F_ON.
The TPS65573 provides two protection mechanisms; thermal shutdown and overcurrent protection.
Thermal Shutdown (TSD)
Once the TPS65573 die temperature reaches a specific temperature, the operation is immediately latched off. To
recover the operation, the TPS65573 die temperature should be lower than a specific temperature and forced to
a low level at CHG if protection is needed.
Overcurrent Protection (OCP)
The TPS65573 has OCP at the SW pin. The TPS65573 is latched off if the SW pin is dropped to compare VBAT
pin voltage during the switch ON time. The threshold is specified in Overcurrent Protection Trigger Voltage at SW
in Electrical Characteristics. To recover the operation, the CHG level is forced to a low level after protection
occurs and peak current is less than threshold.
Copyright 2009, Texas Instruments Incorporated
9
Product Folder Link(s): TPS65573
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| TPS65573DSST | 1.5 A SWITCHED CAPACITOR CONVERTER, PDSO12 |
| TPS65708YZHT | SWITCHING CONTROLLER, PBGA16 |
| TPS65800RTQTG4 | 8-CHANNEL POWER SUPPLY SUPPORT CKT, PQCC56 |
| TPS65800RTQT | 8-CHANNEL POWER SUPPLY SUPPORT CKT, PQCC56 |
| TPS65800RTQRG4 | 8-CHANNEL POWER SUPPLY SUPPORT CKT, PQCC56 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TPS65573DSST | 功能描述:功率驅(qū)動器IC Integ Photo Flash Chrgr & IGBT Drvr RoHS:否 制造商:Micrel 產(chǎn)品:MOSFET Gate Drivers 類型:Low Cost High or Low Side MOSFET Driver 上升時間: 下降時間: 電源電壓-最大:30 V 電源電壓-最小:2.75 V 電源電流: 最大功率耗散: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube |
| TPS65580EVM-575 | 制造商:Texas Instruments 功能描述:TPS65580EVM-575 - Boxed Product (Development Kits) |
| TPS65580PWPR | 功能描述:Buck Switching Regulator IC Positive Adjustable 0.764V 3 Output 1.5A, 2.5A 20-TSSOP (0.173", 4.40mm Width) Exposed Pad 制造商:texas instruments 系列:D-CAP2?? 包裝:剪切帶（CT） 零件狀態(tài):有效 功能:降壓 輸出配置:正 拓?fù)?降壓 輸出類型:可調(diào)式 輸出數(shù):3 電壓 - 輸入（最小值）:4.5V 電壓 - 輸入（最大值）:18V 電壓 - 輸出（最小值/固定）:0.764V 電壓 - 輸出（最大值）:7V 電流 - 輸出:1.5A，2.5A 頻率 - 開關(guān):700kHz 同步整流器:是 工作溫度:-40°C ~ 85°C（TA） 安裝類型:表面貼裝 封裝/外殼:20-TSSOP（0.173"，4.40mm 寬）裸焊盤 供應(yīng)商器件封裝:20-HTSSOP 標(biāo)準(zhǔn)包裝:1 |
| TPS65581PWPR | 功能描述:Buck Switching Regulator IC Positive Adjustable 0.764V 3 Output 1.5A, 2.5A 20-TSSOP (0.173", 4.40mm Width) Exposed Pad 制造商:texas instruments 系列:D-CAP2?? 包裝:剪切帶（CT） 零件狀態(tài):有效 功能:降壓 輸出配置:正 拓?fù)?降壓 輸出類型:可調(diào)式 輸出數(shù):3 電壓 - 輸入（最小值）:4.5V 電壓 - 輸入（最大值）:18V 電壓 - 輸出（最小值/固定）:0.764V 電壓 - 輸出（最大值）:7V 電流 - 輸出:1.5A，2.5A 頻率 - 開關(guān):700kHz 同步整流器:是 工作溫度:-40°C ~ 85°C（TA） 安裝類型:表面貼裝 封裝/外殼:20-TSSOP（0.173"，4.40mm 寬）裸焊盤 供應(yīng)商器件封裝:20-HTSSOP 標(biāo)準(zhǔn)包裝:1 |
| TPS65630ARTGR | 制造商:Texas Instruments 功能描述: |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。