SLVS753C February   2007  – November 2016 TPS40180

PRODUCTION DATA.  

  1. Features
  2. Applications
  3. Description
  4. Revision History
  5. Pin Configuration and Functions
  6. Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 ESD Ratings
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information
    5. 6.5 Electrical Characteristics
    6. 6.6 Typical Characteristics
  7. Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Current Sensing and Overcurrent Detection
      2. 7.3.2 Hiccup Fault Recovery
      3. 7.3.3 Selecting Current Sense Network Components
      4. 7.3.4 PGOOD Functionality
      5. 7.3.5 Output Overvoltage and Undervoltage Protection
      6. 7.3.6 Overtemperature Protection
      7. 7.3.7 eTRIM™
      8. 7.3.8 Connections Between Controllers for Stacking
      9. 7.3.9 VSH Line in the Multiphase
    4. 7.4 Device Functional Modes
      1. 7.4.1 Tracking
    5. 7.5 Programming
      1. 7.5.1 Programming the Operating Frequency
      2. 7.5.2 Programming the Soft-Start Time
      3. 7.5.3 Using the Device for Clock Master/Slave Operation
      4. 7.5.4 Using the TPS40180 for Voltage Control Loop Master or Slave Operation
  8. Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Applications
      1. 8.2.1 Single Output Synchronous Buck Converter
        1. 8.2.1.1 Design Requirements
        2. 8.2.1.2 Detailed Design Procedure
          1. 8.2.1.2.1 Inductor Selection
          2. 8.2.1.2.2 Output Capacitor Selection
          3. 8.2.1.2.3 Input Capacitor Selection
          4. 8.2.1.2.4 MOSFET Selection
          5. 8.2.1.2.5 Peripheral Component Design
            1. 8.2.1.2.5.1  Switching Frequency Setting (RT)
            2. 8.2.1.2.5.2  Output Voltage Setting (FB)
            3. 8.2.1.2.5.3  Current Sensing Network Design (CS+, CS-)
            4. 8.2.1.2.5.4  Overcurrent Protection (ILIM)
            5. 8.2.1.2.5.5  VREG (PVCC)
            6. 8.2.1.2.5.6  BP5
            7. 8.2.1.2.5.7  Phase Select (PSEL)
            8. 8.2.1.2.5.8  VSHARE (VSH)
            9. 8.2.1.2.5.9  Powergood (PGOOD)
            10. 8.2.1.2.5.10 Undervoltage Lockout (UVLO)
            11. 8.2.1.2.5.11 Clock Synchronization (CLKIO)
            12. 8.2.1.2.5.12 Bootstrap Capacitor
            13. 8.2.1.2.5.13 Soft Start (SS)
            14. 8.2.1.2.5.14 Remote Sense
            15. 8.2.1.2.5.15 Feedback Compensator Design
        3. 8.2.1.3 Application Curves
      2. 8.2.2 Simultaneous Tracking With TPS40180 Devices
        1. 8.2.2.1 Design Requirements
        2. 8.2.2.2 Detailed Design Procedure
        3. 8.2.2.3 Application Curves
      3. 8.2.3 2-Phase Single Output With TPS40180
        1. 8.2.3.1 Design Requirements
        2. 8.2.3.2 Detailed Design Procedure
          1. 8.2.3.2.1 Inductor Selection
          2. 8.2.3.2.2 Output Capacitor Selection
          3. 8.2.3.2.3 Input Capacitor Selection
          4. 8.2.3.2.4 Peripheral Component Design
            1. 8.2.3.2.4.1 PSEL Pin
            2. 8.2.3.2.4.2 CLKIO Pin
            3. 8.2.3.2.4.3 RT Pin
            4. 8.2.3.2.4.4 SS Pin
            5. 8.2.3.2.4.5 DIFFO Pin and FB Pin
            6. 8.2.3.2.4.6 COMP Pin
            7. 8.2.3.2.4.7 VSH Pin
            8. 8.2.3.2.4.8 Other Pins
        3. 8.2.3.3 Application Curves
  9. Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
      1. 10.1.1 Power Stage
      2. 10.1.2 Device Peripheral
      3. 10.1.3 PowerPad Layout™
    2. 10.2 Layout Example
  11. 11Device and Documentation Support
    1. 11.1 Device Support
      1. 11.1.1 Third-Party Products Disclaimer
      2. 11.1.2 Device Nomenclature
    2. 11.2 Receiving Notification of Documentation Updates
    3. 11.3 Community Resources
    4. 11.4 Trademarks
    5. 11.5 Electrostatic Discharge Caution
    6. 11.6 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

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订购信息

Specifications

Absolute Maximum Ratings

over operating free-air temperature range (unless otherwise noted)(1)
MIN MAX UNIT
Input voltage, VI VDD, UVLO, RT, SS –0.3 16 V
FB, VOUT, GSNS, VSH, ILIM, BP5, PSEL, CS+, CS–, VS+, VS– –0.3 6
Output voltage, VO BOOT – HDRV –0.3 6 V
SW, HDRV –1 44
SW, HDRV, transient (<50 ns) –5 44
DIFFO, LDRV, PVCC, CLKIO, PGOOD, COMP –0.3 6
PGOOD (eTrim™ usage only) –0.3 22
Operating junction temperature, TJ –40 150 °C
Storage temperature, Tstg –55 150 °C
Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, which do not imply functional operation of the device at these or any other conditions beyond those indicated under Recommended Operating Conditions. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.

ESD Ratings

VALUE UNIT
V(ESD) Electrostatic discharge Human-body model (HBM), per ANSI/ESDA/JEDEC JS-001(1) ±2500 V
Charged-device model (CDM), per JEDEC specification JESD22-C101(2) ±1500
JEDEC document JEP155 states that 500-V HBM allows safe manufacturing with a standard ESD control process.
JEDEC document JEP157 states that 250-V CDM allows safe manufacturing with a standard ESD control process.

Recommended Operating Conditions

over operating free-air temperature range (unless otherwise noted)
MIN NOM MAX UNIT
VI Input voltage VDD, UVLO 4.5 15 V
SW –1 40
BOOT – SW 5.5
All other pins 0 5.8
RT 25 µA
PSEL 150 µA
TJ Operating junction temperature –40 105 °C

Thermal Information

THERMAL METRIC(1) TPS40180 UNIT
RGE (VQFN)
24 PINS
RθJA Junction-to-ambient thermal resistance 33.9 °C/W
RθJC(top) Junction-to-case (top) thermal resistance 34.4 °C/W
RθJB Junction-to-board thermal resistance 11.6 °C/W
ψJT Junction-to-top characterization parameter 0.4 °C/W
ψJB Junction-to-board characterization parameter 11.7 °C/W
RθJC(bot) Junction-to-case (bottom) thermal resistance 3 °C/W
For more information about traditional and new thermal metrics, see the Semiconductor and IC Package Thermal Metrics application report.

Electrical Characteristics

VVDD = 12 V, VBP5 = 15 V, VPVCC = 5 V, –40°C ≤ TJ ≤ 85°C (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
VDD INPUT SUPPLY
VVDD Operating voltage range 4.5 12 15 V
IVDDSD Shutdown current VUVLO < 0.5 V 50 µA
BP5 INPUT SUPPLY
VBP5 Operating voltage range 4.3 5 5.5 V
IBP5 Operating current 2 3 5 mA
VBP5UV Rising undervoltage
turn on threshold
4 4.25 4.5 V
VBP5UVH BP5 UVLO hysteresis 225 mV
PVCC REGULATOR
VPVCC Output voltage 4.5 V < VDD < 15 V 4.3 5 5.5 V
IPVCC Output current 0 50 mA
OSCILLATOR
FOSC Oscillator frequency RRT = 64.9 kΩ 360 415 454 kHz
Oscillator frequency range 150 1000
VRMP Ramp voltage(1) 420 500 525 mV
VRTCKLSLV RT pin clock slave voltage threshold 2 V
DIGITAL CLOCK SIGNAL (CLKIO)
RCLKH Pull up resistance(1) 27 Ω
RCLKL Pull down resistance(1) 27 Ω
ICLKIOLK Leakage current
in high impedance state(1)
VRT < 2 V, VPSEL = 5 V 1 µA
UVLO PIN
VUVLO(on) PVCC regulator enabled 0.8 0.9 1.5 V
PWM switching enabled 1.9 2 2.1
IUVLO Hysteresis bias current 9 12 15 µA
PULSE WIDTH MODULATOR
DMAX Maximum duty cycle 8 phase CLK scheme 87.5%
6 phase CLK scheme 83%
tON(min) Minimum pulse width(1) 75 ns
VSHARE
VVSH Current share reference;
ramp valley voltage
RLOAD = 20 kΩ 1.7 1.8 1.9 V
ERROR AMPLIFIER
IIB Input bias current at FB pin VFB = 0.7 V –200 0 200 nA
VREF Trimmed FB control voltage Includes differential sense amp offset 695 700 705 mV
IOH COMP source current VCOMP = 1.1 V, VFB = 0.6 V 1 2 mA
IOL COMP sink current VCOMP = 1.1 V, VFB = 0.8 V 1 2 mA
EAGBWP Gain bandwidth product(1) 8 12 MHz
AOL Open loop gain(1) 60 90 dB
SOFTSTART
ISS1 Charging current
(before first PWM pulse)
Device enabled,
during hiccup fault recovery
6.5 7.5 8.2 µA
ISS2 Charging current
(after first PWM pulse)
12 15 17 µA
VSS_FE Fault enable threshold 0.8 V
VSSSLV Voltage loop slave mode
threshold voltage
VBP5 = 5 V VBP5 – 0.75 V
CURRENT LIMIT
IILIM Threshold setting current 21.5 23.5 25.5 µA
CURRENT SENSE AMPLIFIER
VISOFST Input offset voltage –2.5 0 2.5 mV
IIS_CS Input bias current 100 nA
GCS Gain at PWM input 0.2 V ≤ VICM ≤ 5.8 V 11.25 12.5 13.75 V/V
VICM Input common mode range 0 5.8 V
VDIFFMX Maximum differential input voltage –60 60 mV
DIFFERENTIAL REMOVE VOLTAGE SENSE AMPLIFIER
GRVS Gain 0.7 V < V(VOUT) – V(GSNS) < 5.8 V 0.995 1 1.005 V/V
IDIFFOH DIFFO source current V(VOUT) – V(GSNS) = 2 V,
V(DIFFO) > 1.98 V,
V(VDD) – V(VOUT) > 2 V
2 mA
V(VOUT) – V(GSNS) = 5.8 V,
V(DIFFO) > 5.6 V,
V(VDD) – V(VOUT) > 1 V
1
IDIFFOL DIFFO sink current V(VOUT) – V(GSNS) = 2 V,
V(DIFFO) > 2.02 V
2 mA
BWDIFFA Unity gain bandwidth(1) 5 8 MHz
RINDIFFA Input resistance Inverting, DIFFO to GSNS 60
Noninverting, OUT to GND 60
PSEL PIN
IISEL Bias current 21.5 23.5 25.5 µA
VMNCLK Master mode No output on CLKIO 0 0 0.5 V
VM8PH 8 phase CLKIO 0.5 0.7 0.9
VM6PH 6 phase CLKIO 0.9
VSSTDBY Slave mode, standby state 3.4 V
VS45 Clock slave mode,
45° phase slot(1)
8 phase CLKIO 0 0 0.2 V
VS90 Clock slave mode,
90° phase slot(1)
8 phase CLKIO 0.2 0.35 0.5 V
VS135 Clock slave mode,
135° phase slot(1)
8 phase CLKIO 0.5 0.7 0.9 V
VS180 Clock slave mode,
180° phase slot(1)
8 phase CLKIO 0.9 1.1 1.3 V
VS225 Clock slave mode,
225° phase slot(1)
8 phase CLKIO 1.3 1.6 1.9 V
VS270 Clock slave mode,
270° phase slot(1)
8 phase CLKIO 1.9 2.25 2.6 V
VS315 Clock slave mode,
315° phase slot(1)
8 phase CLKIO 2.6 3 3.4 V
VS0 Clock slave mode,
0 phase slot(1)
6 phase CLKIO 1.9 2.25 2.6 V
VS60 Clock slave mode,
60° phase slot(1)
6 phase CLKIO 0 0 0.2 V
VS120 Clock slave mode,
120° phase slot(1)
6 phase CLKIO 0.2 0.35 0.5 V
VS180 Clock slave mode,
180° phase slot(1)
6 phase CLKIO 0.5 0.7 0.9 V
VS240 Clock slave mode,
240° phase slot(1)
6 phase CLKIO 0.9 1.1 1.3 V
VS300 Clock slave mode,
300° phase slot(1)
6 phase CLKIO 1.3 1.6 1.9 V
GATE DRIVERS
RHDRV(on) HDRV pull up resistance VBOOT = 5 V, V(SW) = 0 V,
IHDRV = 100 mA
1 2 3 Ω
RHDRV(off) HDRV pull down resistance VBOOT = 5 V, V(SW) = 0 V,
IHDRV = 100 mA
0.5 1 2 Ω
RLDRV(on) LDRV pull up resistance VPVCC = 5 V, ILDRV = 100 mA 1 2 3.5 Ω
RLDRV(off) LDRV pull down resistance VPVCC = 5 V, ILDRV = 100 mA 0.3 0.75 1.5 Ω
tHDRV(r) HDRV rise time(1) CLOAD = 3.3 nF 25 75 ns
tHDRV(f) HDRV fall time(1) CLOAD = 3.3 nF 25 75 ns
tLDRV(r) LDRV rise time(1) CLOAD = 3.3 nF 25 75 ns
tLDRV(f) LDRV fall time(1) CLOAD = 3.3 nF 10 60 ns
POWER GOOD
VFBPG_H Power good high FB voltage threshold 764 787 798 mV
VFBPG_L Power good low FB voltage threshold 591 611 626 mV
VFBPG(hyst) Power good threshold hysteresis 30 60 mV
TPGDLY Power good delay time(1) 10 µs
VPGL Power good low level output voltage IPG = 2 mA 0.35 0.4 V
IPGLK Power good leakage current VPG = 5 V 1 µA
OVERVOLTAGE AND UNDERVOLTAGE
VFB_U FB pin under voltage threshold 565 580 595 mV
VFB_O FB pin over voltage threshold 792 810 828 mV
THERMAL SHUTDOWN
TTSD Shutdown temperature(1) 126 135 144 °C
TTSD(hyst) Hysteresis(1) 40 °C
TWRN Warning temperature(1) 106 115 124 °C
TWR(hyst) Hysteresis(1) 10 °C
Specified by design. Not production tested.

Typical Characteristics

TPS40180 graph_01_slvs753.gif Figure 1. Input Shutdown Current vs Junction Temperature
TPS40180 graph_03_slvs753.gif Figure 3. Relative Current Sense Gain
vs Junction Temperature
TPS40180 graph_05_slvs753.gif Figure 5. UVLO Hysteresis vs Junction Temperature
TPS40180 graph_07_slvs753.gif Figure 7. Soft-Start Charge Current vs Junction Temperature
TPS40180 graph_08_slvs753.gif Figure 9. Driver Resistance vs Junction Temperature
TPS40180 graph_10_slvs753.gif Figure 11. Power Good Low Threshold Voltage
vs Junction Temperature
TPS40180 graph_12_slvs753.gif Figure 13. Undervoltage and Overvoltage Threshold
vs Junction Temperature
TPS40180 graph_14_slvs753.gif Figure 15. UVLO Hysteresis Current
vs Junction Temperature
TPS40180 graph_16_slvs753.gif Figure 17. Relative Feedback Reference Voltage Change
vs Junction Temperature
TPS40180 graph_18_slvs753.gif Figure 19. Relative Oscillator Frequency vs Junction Temperature
TPS40180 graph_02_slvs753.gif Figure 2. Current Sense Amplifier Offset Voltage
vs Junction Temperature
TPS40180 graph_04_slvs753.gif Figure 4. Current Limit vs Junction Temperature
TPS40180 graph_06_slvs753.gif Figure 6. Current Share RE Voltage
vs Junction Temperature
TPS40180 remote_voltage_sense_amp_GRAPH_slvs753.gif Figure 8. Remote Voltage Sense Amplifier
vs Junction Temperature
TPS40180 graph_09_slvs753.gif Figure 10. Power Good Threshold Voltage
vs Junction Temperature
TPS40180 graph_11_slvs753.gif Figure 12. Power Good FB Hysteresis
vs Junction Temperature
TPS40180 graph_13_slvs753.gif Figure 14. UVLO Enable Threshold vs Junction Temperature
TPS40180 graph_15_slvs753.gif Figure 16. UVLO PWM Enable Threshold Voltage
vs Junction Temperature
TPS40180 graph_17_slvs753.gif Figure 18. Feedback Bias Current vs Junction Temperature