TPS652510

更新时间： 2024-11-16 11:58:27

品牌	Logo	应用领域
德州仪器 - TI		转换器输入元件 DC-DC转换器
页数	文件大小	规格书
29页	1466K
描述
4.5-V TO 16-V INPUT, HIGH CURRENT, SYNCHRONOUS STEP DOWN THREE DC-DC CONVERTERS WITH INTEGRATED FET

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TPS652510 数据手册

TPS652510

www.ti.com

SLVSB30A –SEPTEMBER 2011–REVISED SEPTEMBER 2011

4.5-V TO 16-V INPUT, HIGH CURRENT, SYNCHRONOUS STEP DOWN THREE DC-DC

CONVERTERS WITH INTEGRATED FET

Check for Samples: TPS652510

FEATURES

•

Adjustable Cycle-by-Cycle Current Limit Set

by External Resistor

•

Wide Input Supply Voltage Range:

4.5 V - 16 V

Current-Mode Control With Simple

Compensation Circuit

•

0.8-V, 1% Accuracy Reference

Automatic Low Pulse Skipping (PSM) Power

Mode, Allowing for an Output Ripple Better

than 2%

Continuous Loading:

3 A (Buck1), 2 A (Buck2 and 3)

•

Maximum Current:

3.5 A (Buck 1), 2.5 A (Buck2 and 3)

•

Support Pre-Biased Outputs

Power Good Supervisor and Reset Generator

Synchronous Operation, 300-kHz – 2.2-MHz

Switching Frequency Set By External Resistor

Small, Thermally Efficient 40-Pin 6-mm x 6-mm

RHA (QFN) package

External Enable Pins With Built-In Current

Source for Easy Sequencing

•

-40°C to 125°C Junction Temperature Range

External Soft Start Pins

DESCRIPTION/ORDERING INFORMATION

TPS652510 is a power management IC with three step-down buck converters. Both high-side and low-side

MOSFETs are integrated to provide fully synchronous conversion with higher efficiency. The converters are

designed to simplify its application while giving the designer the option to optimize their usage according to the

target application.

The converters can operate in 5-, 9-, 12- or 15-V systems. The output voltage can be set externally using a

resistor divider to any value between 0.8 V and the input supply minus the resistive drops on the converter path.

Each converter features enable pin that allows a delayed start-up for sequencing purposes, soft start pin that

allows adjustable soft-start time by choosing the soft-start capacitor, and a current limit (RLIM) pin that enables

designer to adjust current limit by selecting an external resistor and optimize the choice of inductor. All converters

operate in ‘hiccup mode’: Once an over-current lasting more than 10 ms is sensed in any of the converters, they

will shut down for 10 ms and then the start-up sequencing will be tried again. If the overload has been removed,

the converter will ramp up and operate normally. If this is not the case the converter will see another over-current

event and shuts down again repeating the cycle (hiccup) until the failure is cleared. If an overload condition lasts

for less than 10 ms, only the relevant converter affected will shut-down and re-start and no global hiccup mode

will occur.

The switching frequency of the converters is set by an external resistor connected to ROSC pin. The switching

regulators are designed to operate from 300 kHz to 2.2 MHz. The converters operate with 180° phase between

then to minimize the input filter requirements. All converters have peak current mode control which simplifies

external frequency compensation.

The device has a built-in slope compensation ramp to prevent sub harmonic oscillations in peak current mode

control. A traditional type II compensation network can stabilize the system and achieve fast transient response.

Moreover, an optional capacitor in parallel with the upper resistor of the feedback divider provides one more zero

and makes the crossover frequency over 100 kHz.

All converters feature an automatic low power pulse PFM skipping mode which improves efficiency during light

loads and standby operation, while guaranteeing a very low output ripple, allowing for a value of less than 2% at

low output voltages.

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas

Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.

12 3 4 5 6 7...29

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TPS652510 替代型号

型号	品牌	替代类型	描述	数据表
TPS65252	TI	功能相似	4.5-V TO 16-V INPUT, HIGH CURRENT, SYNCHRONOUS STEP DOWN DUAL BUCK SWITCHER WITH INTEGRATE
TPS65251	TI	功能相似	4.5-V TO 18-V INPUT, HIGH CURRENT, SYNCHRONOUS STEP DOWN THREE BUCK SWITCHER WITH INTEGRAT
TPS65250	TI	功能相似	4.5-V TO 18-V INPUT, HIGH CURRENT, SYNCHRONOUS STEP DOWN THREE BUCK CONVERTER WITH INTEGRA

与TPS652510相关器件

型号	品牌	获取价格	描述	数据表
TPS652510RHAR	TI	获取价格	4.5-V TO 16-V INPUT, HIGH CURRENT, SYNCHRONOUS STEP DOWN THREE DC-DC CONVERTERS WITH INTEG
TPS652510RHAT	TI	获取价格	4.5-V TO 16-V INPUT, HIGH CURRENT, SYNCHRONOUS STEP DOWN THREE DC-DC CONVERTERS WITH INTEG
TPS65251-1	TI	获取价格	TPS65251-x 4.5-V to 18-V Input, High Current, Synchronous Step Down Three Buck Switchers W
TPS65251-1_15	TI	获取价格	TPS65251-x 4.5-V to 18-V Input, High Current, Synchronous Step Down Three Buck Switchers W
TPS65251-1RHAR	TI	获取价格	TPS65251-x 4.5-V to 18-V Input, High Current, Synchronous Step Down Three Buck Switchers W
TPS65251-1RHAT	TI	获取价格	TPS65251-x 4.5-V to 18-V Input, High Current, Synchronous Step Down Three Buck Switchers W
TPS65251-2	TI	获取价格	TPS65251-x 4.5-V to 18-V Input, High Current, Synchronous Step Down Three Buck Switchers W
TPS65251-2RHAR	TI	获取价格	TPS65251-x 4.5-V to 18-V Input, High Current, Synchronous Step Down Three Buck Switchers W
TPS65251-2RHAT	TI	获取价格	TPS65251-x 4.5-V to 18-V Input, High Current, Synchronous Step Down Three Buck Switchers W
TPS65251-3	TI	获取价格	TPS65251-x 4.5-V to 18-V Input, High Current, Synchronous Step Down Three Buck Switchers W

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