ZHCS614G October   2011  – September 2022 TPS40422

PRODUCTION DATA  

  1. 特性
  2. 应用
  3. 说明
  4. Revision History
  5. 说明(续)
  6. Pin Configuration and Functions
  7. Specifications
    1. 7.1 Absolute Maximum Ratings
    2. 7.2 ESD Ratings
    3. 7.3 Recommended Operating Conditions
    4. 7.4 Thermal Information
    5. 7.5 Electrical Characteristics
    6. 7.6 Typical Characteristics
  8. Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1  PMBus Interface Protocol General Description
      2. 8.3.2  Voltage Reference
      3. 8.3.3  Output Voltage
      4. 8.3.4  Voltage Feed Forward
      5. 8.3.5  Current Sensing
      6. 8.3.6  Overcurrent Protection
      7. 8.3.7  Current Sharing
      8. 8.3.8  Linear Regulators
      9. 8.3.9  BP Switch-over
      10. 8.3.10 Switching Frequency Setting
      11. 8.3.11 Switching Node and BOOT Voltage
      12. 8.3.12 Reading the Output Current
      13. 8.3.13 Soft-Start Time
      14. 8.3.14 Turn-On/Turn-Off Delay and Sequencing
      15. 8.3.15 Pre-Biased Output Start-Up
      16. 8.3.16 Undervoltage Lockout
      17. 8.3.17 Overvoltage and Undervoltage Fault Protection
      18. 8.3.18 Power Good
      19. 8.3.19 Overtemperature Fault Protection
      20. 8.3.20 Thermal Shutdown
      21. 8.3.21 Programmable Fault Responses
      22. 8.3.22 User Data
      23. 8.3.23 Adjustable Anti-Cross Conduction Delay
      24. 8.3.24 Connection of Unused Pins
    4. 8.4 Device Functional Modes
      1. 8.4.1 Control Signal
      2. 8.4.2 OPERATION Command
      3. 8.4.3 Control Signal and OPERATION Command
      4. 8.4.4 Two-Phase Mode Operation
    5. 8.5 Programming
      1. 8.5.1 Supported PMBus Commands
        1. 8.5.1.1 PMBus Address
        2. 8.5.1.2 PMBus Connections
        3. 8.5.1.3 PMBus Data Format
        4. 8.5.1.4 PMBus Interface Output Voltage Adjustment
        5. 8.5.1.5 53
    6. 8.6 Register Maps
      1. 8.6.1 Supported Commands
        1. 8.6.1.1  PAGE (00h)
        2. 8.6.1.2  OPERATION (01h)
          1. 8.6.1.2.1 On
          2. 8.6.1.2.2 Margin
        3. 8.6.1.3  ON_OFF_CONFIG (02h)
          1. 8.6.1.3.1 pu
          2. 8.6.1.3.2 cmd
          3. 8.6.1.3.3 CPR
          4. 8.6.1.3.4 pol
          5. 8.6.1.3.5 CPA
        4. 8.6.1.4  CLEAR_FAULTS (03h)
        5. 8.6.1.5  WRITE_PROTECT (10h)
          1. 8.6.1.5.1 bit5
          2. 8.6.1.5.2 bit6
          3. 8.6.1.5.3 bit7
        6. 8.6.1.6  STORE_USER_ALL (15h)
        7. 8.6.1.7  RESTORE_USER_ALL (16h)
        8. 8.6.1.8  CAPABILITY (19h)
        9. 8.6.1.9  VOUT_MODE (20h)
          1. 8.6.1.9.1 Mode:
          2. 8.6.1.9.2 Exponent
        10. 8.6.1.10 VIN_ON (35h)
          1. 8.6.1.10.1 Exponent
          2. 8.6.1.10.2 Mantissa
        11. 8.6.1.11 VIN_OFF (36h)
          1. 8.6.1.11.1 Exponent
          2. 8.6.1.11.2 Mantissa
        12. 8.6.1.12 IOUT_CAL_GAIN (38h)
          1. 8.6.1.12.1 Exponent
          2. 8.6.1.12.2 Mantissa
        13. 8.6.1.13 IOUT_CAL_OFFSET (39h)
          1. 8.6.1.13.1 Exponent
          2. 8.6.1.13.2 Mantissa
        14. 8.6.1.14 IOUT_OC_FAULT_LIMIT (46h)
          1. 8.6.1.14.1 Exponent
          2. 8.6.1.14.2 Mantissa
        15. 8.6.1.15 IOUT_OC_FAULT_RESPONSE (47h)
          1. 8.6.1.15.1 RS[2:0]
        16. 8.6.1.16 IOUT_OC_WARN_LIMIT (4Ah)
          1. 8.6.1.16.1 Exponent
          2. 8.6.1.16.2 Mantissa
        17. 8.6.1.17 OT_FAULT_LIMIT (4Fh)
          1. 8.6.1.17.1 Exponent
          2. 8.6.1.17.2 Mantissa
        18. 8.6.1.18 OT_WARN_LIMIT (51h)
          1. 8.6.1.18.1 Exponent
          2. 8.6.1.18.2 Mantissa
        19. 8.6.1.19 TON_RISE (61h)
          1. 8.6.1.19.1 Exponent
          2. 8.6.1.19.2 Mantissa
        20. 8.6.1.20 STATUS_BYTE (78h)
        21. 8.6.1.21 STATUS_WORD (79h)
        22. 8.6.1.22 STATUS_VOUT (7Ah)
        23. 8.6.1.23 STATUS_IOUT (7Bh)
        24. 8.6.1.24 STATUS_TEMPERATURE (7Dh)
        25. 8.6.1.25 STATUS_CML (7Eh)
        26. 8.6.1.26 STATUS_MFR_SPECIFIC (80h)
        27. 8.6.1.27 READ_VOUT (8Bh)
        28. 8.6.1.28 READ_IOUT (8Ch)
          1. 8.6.1.28.1 Exponent
          2. 8.6.1.28.2 Mantissa
        29. 8.6.1.29 READ_TEMPERATURE_2 (8Eh)
          1. 8.6.1.29.1 Exponent
          2. 8.6.1.29.2 Mantissa
        30. 8.6.1.30 PMBUS_REVISION (98h)
        31. 8.6.1.31 MFR_SPECIFIC_00 (D0h)
        32. 8.6.1.32 VREF_TRIM (MFR_SPECIFIC_04) (D4h)
        33. 8.6.1.33 STEP_VREF_MARGIN_HIGH (MFR_SPECIFIC_05) (D5h)
        34. 8.6.1.34 STEP_VREF_MARGIN_LOW (MFR_SPECIFIC_06) (D6h)
        35. 8.6.1.35 PCT_VOUT_FAULT_PG_LIMIT (MFR_SPECIFIC_07) (D7h)
        36. 8.6.1.36 126
        37. 8.6.1.37 SEQUENCE_TON_TOFF_DELAY (MFR_SPECIFIC_08) (D8h)
        38. 8.6.1.38 128
        39. 8.6.1.39 OPTIONS (MFR_SPECIFIC_21) (E5h)
        40. 8.6.1.40 DEVICE_CODE (MFR_SPECIFIC_44) (FCh)
          1. 8.6.1.40.1 Identifier Code
          2. 8.6.1.40.2 Revision Code
  9. Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Application
      1. 9.2.1 Dual-Output Converter
        1. 9.2.1.1 Design Requirements
        2. 9.2.1.2 Detailed Design Procedure
          1. 9.2.1.2.1 Custom Design with WEBENCH® Tools
          2. 9.2.1.2.2 Step 1: Inductor Selection
          3. 9.2.1.2.3 Step 2: Output Capacitor Selection
          4. 9.2.1.2.4 Step 3: Input Capacitance Selection
          5. 9.2.1.2.5 Step 4: MOSFET Selection
          6. 9.2.1.2.6 Step 5: Snubber Circuit Design
          7. 9.2.1.2.7 Step 6: Soft-Start Time
          8. 9.2.1.2.8 Step 7: Peripheral Component Design
            1. 9.2.1.2.8.1 RT (Pin 1) Switching Frequency Setting
            2. 9.2.1.2.8.2 FB1 (Pin 2) and FB2 (Pin 8) Output Voltage Setting
            3. 9.2.1.2.8.3 Compensation Network Using COMP1 (Pin 3) , COMP2 (Pin 7), FB1 (Pin 2) FB2 DIFFO1 (Pin 8) (Pin 39)
            4. 9.2.1.2.8.4 Remote Sensing Using VSNS1 (Pin 37), GSNS1 (Pin 38) , VSNS2 (Pin 15), and GSNS2 (Pin 14)
            5. 9.2.1.2.8.5 Temperate Sensing Using TSNS1 (Pin36) and TSNS2 (Pin 16)
            6. 9.2.1.2.8.6 Current Sensing Network Design Using CS1P (Pin 34), CS1N (Pin 35) , CS2P (Pin 18), and CS2N (Pin 17)
            7. 9.2.1.2.8.7 PMBus Address ADDR1 (Pin 9) , and ADDR0 (Pin 10)
            8. 9.2.1.2.8.8 Voltage Decoupling Capacitors
              1. 9.2.1.2.8.8.1  VDD (Pin 31)
              2. 9.2.1.2.8.8.2  BP3 (Pin 32)
              3. 9.2.1.2.8.8.3  BNEXT (Pin 24)
              4. 9.2.1.2.8.8.4  BP6 (Pin 25)
              5. 9.2.1.2.8.8.5  Power Good PGOOD1 (Pin 33), PGOOD2 (Pin 19)
              6. 9.2.1.2.8.8.6  Bootstrap Capacitors BOOT1 (Pin 30), and BOOT2 (Pin 20)
              7. 9.2.1.2.8.8.7  High-Side MOSFET (Gate) Resistor
              8. 9.2.1.2.8.8.8  Synchronization Setting SYNC (Pin 40)
              9. 9.2.1.2.8.8.9  BP6 (Pin 25)
              10. 9.2.1.2.8.8.10 DIFFO (Pin 39)
        3. 9.2.1.3 Application Curves
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
      1. 11.1.1 PCB Layout Guidelines
      2. 11.1.2 MOSFET Layout Guidelines
    2. 11.2 Layout Example
  12. 12Device and Documentation Support
    1. 12.1 Device Support
    2. 12.2 接收文档更新通知
    3. 12.3 支持资源
    4. 12.4 Trademarks
    5. 12.5 Electrostatic Discharge Caution
    6. 12.6 术语表
  13. 13Mechanical, Packaging, and Orderable Information

封装选项

机械数据 (封装 | 引脚)
散热焊盘机械数据 (封装 | 引脚)
订购信息

Electrical Characteristics

TJ = –40°C to 125°C, VIN = VDD = 12 V, fSW = 500 kHz, all parameters at zero power dissipation (unless otherwise noted)
PARAMETERTEST CONDITIONSMINTYPMAXUNIT
INPUT SUPPLY
VVDDInput supply voltage range4.520V
IVDDInput operating currentSwitching, no driver load1825mA
Not switching1520
UVLO
VIN(on)Input turn on voltage(2)Default settings4.25V
VIN(off)Input turn off voltage(2)Default settings4V
VINON(rng)Programmable range for turn on voltage4.2516V
VINOFF(rng)Programmable range for turn off voltage415.75V
VINONOFF(acc)Turn on and turn off voltage accuracy(1)4.5 V ≤ VVDD ≤ 20 V, all VIN_ON and VIN_OFF settings–5%5%
ERROR AMPLIFIER
VFBFeedback pin voltage0°C ≤ TJ ≤ 85°C597600603mV
–40°C ≤ TJ ≤ 125°C594600606
AOLOpen-loop gain(1)80dB
GBWPGain bandwidth product(1)24MHz
IFBFB pin bias current (out of pin)VFB = 0.6 V50nA
ICOMPSourcingVFB = 0 V13mA
SinkingVFB = 1 V39
BP6 REGULATOR
VBP6Output voltageIBP6 = 10 mA6.26.56.8V
Dropout voltageVVIN – VBP6, VVDD = 4.5 V, IBP6 = 25 mA70120mV
IBP6Output currentVVDD = 12 V120mA
VBP6UVRegulator UVLO voltage(1)3.33.553.8V
VBP6UV(hyst)Regulator UVLO voltage hysteresis(1)230255270mV
BPEXT
VBPEXT(swover)BPEXT switch-over voltage4.54.6V
Vhys(swover)BPEXT switch-over hysteresis100200mV
VBPEXT(do)BPEXT dropout voltageVBPEXT–VBP6, VBPEXT = 4.8 V, IBP6 = 25 mA100mV
BOOTSTRAP
VBOOT(drop)Bootstrap voltage dropIBOOT = 5 mA0.71.0V
BP3 REGULATOR
VBP3Output voltageVVDD = 4.5 V, IBP3 ≤ 5 mA3.13.33.5V
OSCILLATOR
fSWAdjustment range1001000kHz
Switching frequencyRRT = 40 kΩ450500550kHz
VRMPRamp peak-to-peak(1)VVDD/8.2V
VVLYValley voltage(1)0.70.81.0V
SYNCHRONIZATION
VSYNCHSYNC high-level threshold2.0V
VSYNCLSYNC low level threshold0.8V
tSYNCMinimum SYNC pulse width100ns
fSYNC(max)Maximum SYNC frequency(4)2000kHz
fSYNC(min)Minimum SYNC frequency(4)200
SYNC frequency range (increase from nominal oscillator frequency)–20%20%
PWM
tOFF(min)Minimum off time90100ns
tON(min)Minimum on pulse(1)90130ns
tDEADOutput driver dead timeHDRV off to LDRV on153045ns
LDRV off to HDRV on153045
SOFT START
tSSSoft-start timeFactory default settings2.42.73.0ms
Accuracy over range(1)600 µs ≤ tSS ≤ 9 ms–15%15%
tON(delay)Turn-on delay time(3)Factory default settings0ms
tOFF(delay)Turn-off delay timeFactory default settings0ms
REMOTE SENSE AMPLIFIER
VDIFFO(err)Error voltage from DIFFO1 to (VSNS1– GSNS1)(VSNS1– GSNS1) = 0.6 V–55mV
(VSNS1– GSNS1) = 1.2 V–88
(VSNS1– GSNS1) = 3.0 V–1717
BWClosed-loop bandwidth(1)2MHz
VDIFFO(max)Maximum DIFFOx output voltageVBP6-0.2V
IDIFFOSourcing1mA
Sinking1
DRIVERS
RHS(up)High-side driver pull-up resistance(VBOOT–VSW) = 6.5 V, IHS = -40 mA0.81.52.5Ω
RHS(dn)High-side driver pull-down resistance(VBOOT–VSW) = 6.5 V, IHS = 40 mA0.51.01.5
RLS(up)Low-side driver pull-up resistanceILS = -40 mA0.81.52.5
RLS(dn)Low-side driver pull-down resistanceILS = 40 mA0.350.701.40
tHS(rise)High-side driver rise time (1)CLOAD = 5 nF15ns
tHS(fall)High-side driver fall time (1)CLOAD = 5 nF12
tLS(rise)Low-side driver rise time (1)CLOAD = 5 nF15
tLS(fall)Low-side driver fall time (1)CLOAD = 5 nF10
CURRENT SENSING AMPLIFIER
VCS(rng)Differential input voltage rangeVCSxP-VCSxN-6060mV
VCS(cmr)Input common-mode range0VBP6–0.2V
VCS(os)Input offset voltageVCSxP = VCSxN = 0 V-33mV
ACSCurrent sensing gain15.00V/V
VCS(out)Amplfier output(VCSxP-VCSxN) = 20 mV270300330mV
fC0Closed-loop bandwidth(1)35MHz
VCS(chch)Amplifier output difference between CH1, CH2(VCS1P– VCS1N) = (VCS2P–VCS2N) = 20 mV,
TJ = 25°C
-5.00%5.00%
(VCS1P– VCS1N) = (VCS2P–VCS2N) = 20 mV,
TJ = 85°C
-6.67%6.67%
CURRENT LIMIT
tOFF(oc)Off-time between restart attemptsHiccup mode7×tSSms
DCRInductor DCR current sensing calibration valueFactory default settings0.488
Programmable range0.24015.500
IOC(flt)Output current overcurrent fault thresholdFactory default settings30A
Programmable range350
IOC(warn)Output current overcurrent warning thresholdFactory default settings27A
Programmable range249
IOC(tc)Output current fault/warning temperature coefficient(1)390040004100ppm/°C
IOC(acc)Output warning and fault accuracy(VCSxP-VCSxN) = 30 mV–15%15%
PGOOD
VFBPGHFB PGOOD high thresholdFactory default settings675mV
VFBPGLFB PGOOD low thresholdFactory default settings525mV
VPG(acc)PGOOD accuracy over range4.5 V ≤ VVDD ≤ 20 V,
468 mV ≤ VPGOOD ≤ 675 mV
–4%4%
Vpg(hyst)FB PGOOD hysteresis voltage2540mV
RPGOODPGOOD pulldown resistanceVFB = 0, IPGOOD = 5 mA4070Ω
IPGOOD(lk)PGOOD pin leakage currentNo fault, VPGOOD = 5 V20µA
OUTPUT OVERVOLTAGE/UNDERVOLTAGE
VFBOVFB pin over voltage thresholdFactory default settings700mV
VFBUVFB pin under voltage thresholdFactory default settings500mV
VUVOV(acc)FB UV/OV accuracy over range4.5 V ≤ VVDD ≤ 20 V–4%4%
OUTPUT VOLTAGE TRIMMING AND MARGINING
VFBTM(step)Resolution of FB steps with trim and margin2mV
tFBTM(step)Transition time per trim or margin stepAfter soft-start time30µs
VFBTM(max)Maximum FB voltage with trim and/or margin660mV
VFBTM(min)Minimum FB voltage with trim or margin only480mV
Minimum FB voltage range with trim and margin combined420
VFBMHMargin high FB pin voltageFactory default settings660mV
VFBMLMargin low FB pin voltageFactory default settings540mV
TEMPERATURE SENSE AND THERMAL SHUTDOWN
TSDJunction thermal shutdown temperature(1)135145155°C
THYSTThermal shutdown hysteresis(1)152025°C
ITSNS(ratio)Ratio of bias current flowing out of TSNS pin, state 2 to state 19.710.010.3
ITSNSState 1 current out of TSNSx pin(1)10µA
ITSNSState 2 current out of TSNSx pin(1)100µA
VTSNSVoltage range on TSNSx pin(1)01.00V
TSNS(acc)External temperature sense accuracy(1)0°C ≤ TJ ≤ 125°C–55°C
TOT(flt)Overtemperature fault limit(1)Factory default settings145°C
OT fault limit range(1)120165°C
TOT(warn)Overtemperature warning limit(1)Factory default settings125°C
OT warning limit range(1)100140°C
TOT(step)OT fault/warning step5°C
TOT(hys)OT fault/warning hysteresis(1)152025°C
MEASUREMENT SYSTEM
MVOUT(rng)Output voltage measurement range(1)0.55.8V
MVOUT(acc)Output voltage measurement accuracyVOUT = 1.0 V–2.0%2.0%
MIOUT(rng)Output current measurement signal range(1)VCSxP–VCSxN, 0.2440 mΩ ≤ IOUT_CAL_GAIN ≤ 0.5795 mΩ024mV
VCSxP–VCSxN, 0.5796 mΩ ≤ IOUT_CAL_GAIN ≤ 1.1285 mΩ040
VCSxP–VCSxN, 1.1286 mΩ ≤ IOUT_CAL_GAIN ≤ 15.5 mΩ060
MIOUT(acc)Output current measurement accuracyIOUT ≥ 20 A, DCR = 0.5 mΩ–1.01.0A
PMBus ADDRESSING
IADDAddress pin bias current9.2410.5011.76µA
PMBus INTERFACE
VIHInput high voltage, CLK, DATA, CNTLx2.1V
VILInput low voltage, CLK, DATA, CNTLx0.8V
IIHInput high level current, CLK, DATA–1010µA
IILInput low level current, CLK, DATA–1010mA
ICTNLCNTL pin pull-up current6µA
VOLLow-level output voltage, DATA, (1)4.5 V ≤ VVDD ≤ 20 V, IOUT = 4 mA0.4V
IOHHigh-level output open-drain leakage current, DATA, SMBALRTVOUT = 5.5 V010µA
COUTOutput capacitance, CLK, DATA(1)1pF
FPMBPMBus operating frequency range(1)Slave mode10400kHz
tBUFBus free time between START and STOP(1)1.3µs
tHD:STAHold time after repeated START(1)0.6µs
tSU:STARepeated START setup time(1)0.6µs
tSU:STOSTOP setup time(1)0.6µs
tHD:DATData hold time(1)Receive mode0ns
Transmit mode300
tSU:DATData setup time(1)100ns
tTIMEOUTError signal/detect(1)2535ms
tLOW:MEXTCumulative clock low master extend time(1)10ms
tLOW:SEXTCumulative clock low slave extend time(1)25µs
tLOWClock low time(1)1.3µs
tHIGHClock high time(1)0.6µs
tFALLCLK/DATA fall time(1)300ns
tRISECLK/DATA rise time(1)300ns
Specified by design. Not production tested.
Hysteresis of at least 150 mV is specified by design.
The minimum turn-on delay is 50 µs, when TON_DELAY is set to a factor of zero.
When using SYNC, the switching frequency is set to one-half the SYNC frequency.