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TPS62004DGSRG4 PDF预览

TPS62004DGSRG4

更新时间: 2024-02-18 05:47:28
品牌 Logo 应用领域
德州仪器 - TI 转换器稳压器开关式稳压器或控制器电源电路开关式控制器光电二极管功效DC-DC转换器
页数 文件大小 规格书
25页 469K
描述
HIGH-EFFICIENCY STEP-DOWN LOW POWER DC-DC CONVERTER

TPS62004DGSRG4 技术参数

是否无铅: 不含铅是否Rohs认证: 符合
生命周期:Active零件包装代码:MSOP
包装说明:TSSOP, TSSOP10,.19,20针数:10
Reach Compliance Code:compliantECCN代码:EAR99
HTS代码:8542.39.00.01Factory Lead Time:6 weeks
风险等级:5.18其他特性:PFM CONTROL TECHNIQUE IS ALSO POSSIBLE
模拟集成电路 - 其他类型:SWITCHING REGULATOR控制模式:CURRENT-MODE
控制技术:PULSE WIDTH MODULATION最大输入电压:5.5 V
最小输入电压:2 V标称输入电压:3.6 V
JESD-30 代码:S-PDSO-G10JESD-609代码:e4
长度:3 mm湿度敏感等级:1
功能数量:1端子数量:10
最高工作温度:85 °C最低工作温度:-40 °C
最大输出电流:1.6 A最大输出电压:1.56 V
最小输出电压:1.455 V标称输出电压:1.5 V
封装主体材料:PLASTIC/EPOXY封装代码:TSSOP
封装等效代码:TSSOP10,.19,20封装形状:SQUARE
封装形式:SMALL OUTLINE, THIN PROFILE, SHRINK PITCH峰值回流温度(摄氏度):260
认证状态:Not Qualified座面最大高度:1.1 mm
子类别:Switching Regulator or Controllers表面贴装:YES
切换器配置:BUCK最大切换频率:1000 kHz
技术:MOS温度等级:INDUSTRIAL
端子面层:Nickel/Palladium/Gold (Ni/Pd/Au)端子形式:GULL WING
端子节距:0.5 mm端子位置:DUAL
处于峰值回流温度下的最长时间:NOT SPECIFIED宽度:3 mm
Base Number Matches:1

TPS62004DGSRG4 数据手册

 浏览型号TPS62004DGSRG4的Datasheet PDF文件第2页浏览型号TPS62004DGSRG4的Datasheet PDF文件第3页浏览型号TPS62004DGSRG4的Datasheet PDF文件第4页浏览型号TPS62004DGSRG4的Datasheet PDF文件第6页浏览型号TPS62004DGSRG4的Datasheet PDF文件第7页浏览型号TPS62004DGSRG4的Datasheet PDF文件第8页 
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SLVS294C − SEPTEMBER 2000 − REVISED SEPTEMBER 2003  
operation (continued)  
In the PFM mode, the converter operates with:  
D
D
D
Variable frequency  
Constant peak current that reduces switching losses  
Quiescent current at a minimum  
Thus maintaining the highest efficiency at light load currents. In this mode, the output voltage is monitored with  
the error amplifier. As soon as the output voltage falls below the nominal value, the high side switch is turned  
on and the inductor current ramps up. When the inductor current reaches the peak current of typical: 150 mA  
+ 50 mA/V x (V − V ), the high side switch turns off and the low side switch turns on. As the inductor current  
I
O
ramps down, the low side switch is turned off before the inductor current becomes negative which completes  
the cycle. When the output voltage falls below the nominal voltage again, the next cycle is started.  
The converter enters the PWM mode again as soon as the output voltage can not be maintained with the typical  
peak inductor current in the PFM mode.  
The control loop is internally compensated reducing the amount of external components.  
The switch current is internally sensed and the maximum current limit can be set to typical 600 mA by connecting  
ILIM to ground or to typically 1.2 A connecting ILIM to V .  
IN  
100% duty cycle operation  
As the input voltage approaches the output voltage and the duty cycle exceeds typical 95%, the converter turns  
the P-channel high side switch continuously on. In this mode, the output voltage is equal to the input voltage  
minus the voltage drop across the P-channel MOSFET.  
synchronization, power save mode and forced PWM mode  
If no clock signal is applied, the converter operates with a typical switching frequency of 750 kHz. It is possible  
to synchronize the converter to an external clock within a frequency range from 500 kHz to 1000 kHz. The device  
automatically detects the rising edge of the first clock and is synchronizes immediately to the external clock.  
If the clock signal is stopped, the converter automatically switches back to the internal clock and continues  
operation without interruption. The switch over is initiated if no rising edge on the SYNC pin is detected for a  
duration of four clock cycles. Therefore, the maximum delay time can be 8 µs in case the internal clock has a  
minimum frequency of 500 kHz.  
In case the device is synchronized to an external clock, the power save mode is disabled and the device stays  
in forced PWM mode.  
Connecting the SYNC pin to the GND pin enables the power save mode. The converter operates in the PWM  
mode at moderate to heavy loads and in the PFM mode during light loads maintaining high efficiency over a  
wide load current range.  
Connecting the SYNC pin to the V pin forces the converter to operate permanently in the PWM mode even  
IN  
at light or no load currents. The advantage is the converter operates with a fixed switching frequency that allows  
simple filtering of the switching frequency for noise sensitive applications. In this mode, the efficiency is lower  
compared to the power save mode during light loads (see Figure 1).  
It is possible to switch from forced PWM mode to the power save mode during operation.  
The flexible configuration of the SYNC pin during operation of the device allows efficient power management  
by adjusting the operation of the TPS6200x to the specific system requirements.  
low noise antiringing switch  
An antiringing switch is implemented in order to reduce the EMI radiated from the converter during  
discontinuous conduction mode (DCM). In DCM, the inductor current ramps to zero before the end of each  
switching period. The internal load comparator turns off the low side switch at that instant thus preventing the  
5
POST OFFICE BOX 655303 DALLAS, TEXAS 75265  

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