UC1825A-SPRHA datasheet(11/40 Pages) TI1

tên linh kiện	UC1825A-SPRHA

Giải thích chi tiết về linh kiện	Class-V, Radiation Hardened High-Speed PWM Controller

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UDG-95111

39

50-

External

Clock

10

6

5

R

T

R

T

C

T

V

SYNC

UDG-95110

CT

1.25 V

CT

from E/A

Oscillator

Voltage Mode

Current Mode

RAMP

CT

7

6

1.25 V

R

SENSE

I

SWITCH

from E/A

Oscillator

RAMP

CT

7

6

11

UC1825A-SP

www.ti.com

SLUS873C – JANUARY 2009 – REVISED DECEMBER 2016

Product Folder Links: UC1825A-SP

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Feature Description (continued)

8.3.4 Control Methods

Figure 7 shows the control methods.

Figure 7. Control Methods

8.3.5 Synchronization

The oscillator can be synchronized by an external pulse inserted in series with the timing capacitor (see

Figure 8). Program the free running frequency of the oscillator to be 10% to 15% slower than the desired

synchronous frequency. The pulse width must be greater than 10 ns and less than half the discharge time of the

oscillator. Figure 9 shows how to synchronize two ICs, with one as master and one as slave. Figure 10 shows

the waveforms in a master and slave configuration.

NOTE

The CLK/LEB pin no longer accepts an incoming synchronizing signal.

Figure 8. General Oscillator Synchronization

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nhà sản xuất	tên linh kiện	bảng dữ liệu	Giải thích chi tiết về linh kiện
Texas Instruments	UC1825A-SP	513Kb / 16P	[Old version datasheet] RAD-TOLERANT CLASS-V, HIGH-SPEED PWM CONTROLLER
Texas Instruments	UC1825A-SP	707Kb / 39P	[Old version datasheet] Rad-Tolerant Class-V, High-Speed PWM Controller

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Mô tả tương tự - UC1825A-SPRHA

nhà sản xuất	tên linh kiện	bảng dữ liệu	Giải thích chi tiết về linh kiện
Texas Instruments	UC1825B-SP	4Mb / 30P	[Old version datasheet] Class-V, Radiation Hardened High-Speed PWM Controller
	UC1846-SP	644Kb / 29P	[Old version datasheet] Class-V, Radiation Hardened PWM Controller
	UC1825B-SP	4Mb / 31P	[Old version datasheet] UC1825B-SP Class-V, Radiation Hardened High-Speed PWM Controller
	UC1825B-SP	4Mb / 31P	[Old version datasheet] UC1825B-SP Class-V, Radiation Hardened High-Speed PWM Controller
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	UC1843B-SP	3Mb / 27P	[Old version datasheet] QML Class V, Radiation Hardened Current-Mode PWM Controller
	UC1845A-SP	874Kb / 28P	[Old version datasheet] UC1845A-SP QML Class V, Radiation Hardened Current-Mode PWM Controller
	UC1843B-SP	3Mb / 27P	[Old version datasheet] UC1843B-SP QML Class V, Radiation Hardened Current-Mode PWM Controller
	UC1843B-SP	3Mb / 31P	[Old version datasheet] UC1843B-SP QML Class V, Radiation Hardened Current-Mode PWM Controller
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