TPS40140 datasheet(21/65 Pages) TI | DUAL OR 2-PHASE, STACKABLE CONTROLLER

Part No.	TPS40140

Description	DUAL OR 2-PHASE, STACKABLE CONTROLLER

Download	65 Pages

Scroll/Zoom	100%

Manufacturer	TI [Texas Instruments]

Direct Link	http://www.ti.com

Logo

21 / 65 page

www.ti.com

0

50

100

150

200

250

300

350

400

450

100

200

300

400

500

600

700

800

900 1000

Phase Switching Frequency − kHz

PHASE FREQUENCY

vs

TIMING RESISTOR

5.21 SYNCHRONIZING A SINGLE CONTROLLER TO AN EXTERNAL CLOCK

TPS40140

DUAL OR 2-PHASE, STACKABLE CONTROLLER

SLUS660A – SEPTEMBER 2005 – REVISED JULY 2006

Figure 5-6. Phase Switching Frequency vs RT

The TPS40140 has the ability to synchronize a single controller to an external clock. The clock must be a

pulse stream at 6 or 8 times the Master PWM frequency. See Figure 5-7.

Synchronizing the single controller to an external clock is similar to synchronizing a clock slave to a clock

master. The single controller is put in clock slave mode by connecting the RT pin to BP5, disabling the

internal clock generator. If the external CLKIO signal is a clock stream without any missing pulses, the

master synchromizes to an arbitrary pulse so there is no determinant phase synchronization. Without a

missing pulse, the PWM frequency will be 1/8 of the external clock. If the external CLKIO signal has a

missing pulse every 6 cycles or 8 cycles, the controller synchronizes based on the missing pulse which

would be in the 6th or 8th position. With the missing pulse, the phase synchronization of the master, to the

missing pulse, can be controlled by the voltage on the PHSEL pin. See the section on DIGITAL CLOCK

SYNCHRONIZATION. Phase shifting would also be desirable if more than one controller were to be

synchronized to the same external clock.

Figure 5-7 shows a time slice of the two external clock possibilities and the resulting PWM signal. EXT

CLK-A is the continuous clock with no missing pulse and the PWM-A signal could be frequency

synchronized anywhere in the clock stream. The PWM signal is at 1/8 of the EXT CLK-A frequency. EXT

CLK-S is the external clock stream with a missing pulse every 8 cycles. The phasing of the PWM-S is

based on the voltage on the PHSEL pin. For PHSEL grounded, the PWM-S signal is shifted 90 degrees

from what would be the falling edge of the missing pulse as shown.

Submit Documentation Feedback

APPLICATION INFORMATION

21

Similar Part No. - TPS40140

Manufacturer	Part No.	Datasheet	Description
Texas Instruments	TPS40140	2Mb / 68P	[Old version datasheet] Dual or 2-Phase, Stackable Controller
	TPS40140RHHR	2Mb / 68P	[Old version datasheet] Dual or 2-Phase, Stackable Controller
	TPS40140RHHRG4	2Mb / 68P	[Old version datasheet] Dual or 2-Phase, Stackable Controller
	TPS40140RHHT	2Mb / 68P	[Old version datasheet] Dual or 2-Phase, Stackable Controller
	TPS40140RHHTG4	2Mb / 68P	[Old version datasheet] Dual or 2-Phase, Stackable Controller

More results

Similar Description - TPS40140

Manufacturer	Part No.	Datasheet	Description
Texas Instruments	TPS53851	1Mb / 64P	[Old version datasheet] DUAL OR 2-PHASE, STACKABLE CONTROLLER
	TPS40140	2Mb / 68P	[Old version datasheet] Dual or 2-Phase, Stackable Controller
	TPS40140	2Mb / 71P	[Old version datasheet] TPS40140 Dual or 2-Phase, Stackable Controller
	TPS40180	1Mb / 52P	[Old version datasheet] SINGLE PHASE STACKABLE CONTROLLER
ON Semiconductor	NCP81243	338Kb / 26P	Dual Output 3 & 2 Phase Controller February, 2016 ??Rev. 0
ON Semiconductor	NCP81243	341Kb / 26P	Dual Output 3 & 2 Phase Controller June, 2017 ??Rev. 2
Microchip Technology	MIC21LV32	1Mb / 50P	36V Dual Phase, Advanced COT Buck Controller Stackable for Multiphase Operation 02/28/20
Texas Instruments	TPS40322	1Mb / 47P	[Old version datasheet] Dual Output or Two-Phase Synchronous Buck Controller
	TPS40322	1,023Kb / 40P	[Old version datasheet] Dual Output or Two-Phase Synchronous Buck Controller
	TPS40322	1Mb / 42P	[Old version datasheet] Dual Output or Two-Phase Synchronous Buck Controller

More results

TPS40140 Datasheet(PDF) 21 Page - Texas Instruments

TPS40140 Datasheet(HTML) 21 Page - Texas Instruments

Similar Part No. - TPS40140

Similar Description - TPS40140

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65

Datasheet Download

Link URL