 |
Electronic Components Datasheet Search |
|
|
Electronic Components Datasheet Search |
|
TPS40428 Datasheet(PDF) 6 Page - Texas Instruments |
|
||||||||||||||||||||||||||||||
TPS40428 Datasheet(HTML) 6 Page - Texas Instruments |
|
|
6 / 92 page  TPS40428 SLUSBV0A – MAY 2014 – REVISED JULY 2014 www.ti.com Electrical Characteristics (continued) TJ = –40ºC to 125ºC, VIN = VVDD = 12 V, RRT valued to produce a switching frequency (fSW) of 500 kHz, all parameters at zero power dissipation (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT BP5 REGULATOR Output voltage IBP5 = 10 mA 4.5 5 5.5 V VBP5 VVIN – VBP5, VVDD = 4.5 V, Dropout voltage 400 mV IBP5 = 25 mA IBP5 Output current VVDD = 12 V 40 mA VBP5UV Regulator UVLO voltage(3) 3.3 3.55 3.8 V VBP5UV(hyst) Regulator UVLO voltage hysteresis(3) 300 mV BP3 REGULATOR VBP3 Output voltage VVDD = 4.5 V, IBP3 ≤ 5 mA 3.1 3.3 3.5 V OSCILLATOR AND RAMP GENERATOR Adjustment range(3) 200 1500 kHz Switching frequency(4) RRT = 100 kΩ 180 200 220 ƒSW Switching frequency(4) RRT = 40 kΩ 450 500 550 kHz Switching frequency(4) RRT = 13 kΩ 1230 1370 1500 VRAMP Ramp amplitude (peak-to-peak) VVDD/10 V VVAL Valley voltage 1.22 V SYNCHRONIZATION VSYNCH SYNC high-level threshold(5) 2 V VSYNCL SYNC low-level threshold(5) 0.8 V tSYNC Minimum SYNC pulse width(3) 100 ns Maximum PWM frequency for SYNC(3) 1500 kHz Minimum PWM frequency for SYNC(3) 200 ƒSYNC SYNC frequency range (increase from –20% 20% nominal oscillator frequency)(3) PWM VOH(pwm) PWM high-level output voltage ILOAD = 500 µA 4.5 V VOL(pwm) PWM low-level output voltage ILOAD = 500 µA 0.5 V tOFF(min) Minimum off-time 100 ns tON(min) Minimum pulse 90 ns SOFT-START Soft-start time(6) Factory default settings 2.7 ms tSS Programmable range(3) 0.6 9 ms Accuracy over range(3) –15% 15% tON(dly) Turn-on delay time(3) Factory default settings 0 ms tOFF(dly) Turn-off delay time(3) Factory default settings 0 ms REMOTE SENSE AMPLIFIER BW Closed-loop bandwidth(3) 2 MHz VDIFFO(max) Maximum DIFFO output voltage 4.7 V (VSNS1– GSNS1) = 1.0 V –6 6 mV Error voltage from DIFFO1 to (VSNS1– VDIFFO(err) GSNS1) (VSNS1– GSNS1) = 3.6 V –19 19 Sourcing 1 IDIFFO mA Sinking 1 (3) Specified by design. Not production tested. (4) Apply to 1-,2- or 4-phase operation. For 3-phase operation, the switching frequency is 33% higher than the value in the table. (5) The external SYNC pin signal must be a square waveform with 50% duty cycle. (6) The soft-start time is the time that the internal reference voltage rises from 0 V to 600 mV. 6 Submit Documentation Feedback Copyright © 2014, Texas Instruments Incorporated Product Folder Links: TPS40428 |
Similar Part No. - TPS40428_15 |
|
Similar Description - TPS40428_15 |
|
|
Link URL |
| Privacy Policy |
| ALLDATASHEET.NET |
| Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Contact us | Privacy Policy | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
| Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
|
Family Site : ic2ic.com |
icmetro.com |
English ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
