SLTS278J November   2010  – March 2020 PTH08T250W

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Description (continued)
  6. 6 Pin Configuration and Functions
    1. Table 1. Pin Functions
  7. 7 Specifications
    1. 7.1 Absolute Maximum Ratings
    2. 7.2 Electrical Characteristics
    3. 7.3 Typical Characteristics (VI = 12 V)
    4. 7.4 Typical Characteristics (VI = 5 V)
  8. 8 Detailed Description
    1. 8.1 Overview: TurboTrans™ Technology
    2. 8.2 Feature Description
      1. 8.2.1 Soft-Start Power-Up
      2. 8.2.2 Differential Output Voltage Remote Sense
      3. 8.2.3 Overcurrent Protection
      4. 8.2.4 Overtemperature Protection (OTP)
  9. 9 Application and Implementation
    1. 9.1 Typical Application
      1. 9.1.1 Detailed Design Procedure
        1. 9.1.1.1  Adjusting the Output Voltage
        2. 9.1.1.2  Capacitor Recommendations for the PTH08T250W Power Module
          1. 9.1.1.2.1 Capacitor Technologies
          2. 9.1.1.2.2 Input Capacitor (Required)
          3. 9.1.1.2.3 Input Capacitor Information
          4. 9.1.1.2.4 Output Capacitor (Required)
          5. 9.1.1.2.5 Output Capacitor Information
          6. 9.1.1.2.6 TurboTrans Output Capacitance
          7. 9.1.1.2.7 Non-TurboTrans Output Capacitance
          8. 9.1.1.2.8 Designing for Fast Load Transients
          9. 9.1.1.2.9 Capacitor Table
        3. 9.1.1.3  TurboTrans™ Technology
        4. 9.1.1.4  TurboTrans™ Selection
          1. 9.1.1.4.1 PTH08T250W Type B Capacitors
            1. 9.1.1.4.1.1 RTT Resistor Selection
          2. 9.1.1.4.2 PTH08T250W Type C Capacitors
            1. 9.1.1.4.2.1 RTT Resistor Selection
        5. 9.1.1.5  Undervoltage Lockout (UVLO)
          1. 9.1.1.5.1 UVLO Adjustment
        6. 9.1.1.6  On/Off Inhibit
        7. 9.1.1.7  Current Sharing
          1. 9.1.1.7.1 Current Sharing and TurboTrans
            1. 9.1.1.7.1.1 Current Sharing Thermal Derating Curves
            2. 9.1.1.7.1.2 Current Sharing Layout
        8. 9.1.1.8  Prebias Startup Capability
        9. 9.1.1.9  SmartSync Technology
        10. 9.1.1.10 Auto-Track™ Function
          1. 9.1.1.10.1 How Auto-Track™ Works
          2. 9.1.1.10.2 Typical Auto-Track Application
          3. 9.1.1.10.3 Notes on Use of Auto-Track™
  10. 10Device and Documentation Support
    1. 10.1 Receiving Notification of Documentation Updates
    2. 10.2 Support Resources
    3. 10.3 Trademarks
    4. 10.4 Electrostatic Discharge Caution
    5. 10.5 Glossary
  11. 11Mechanical, Packaging, and Orderable Information
    1. 11.1 Tape, Reel, and Tray Drawings

Package Options

Refer to the PDF data sheet for device specific package drawings

Mechanical Data (Package|Pins)
  • BCU|22
  • ECT|22
  • ECU|22
Thermal pad, mechanical data (Package|Pins)
Orderable Information

9.1.1.2.9 Capacitor Table

Table 4 identifies the characteristics of acceptable capacitors from a number of vendors. The recommended number of capacitors required at both the input and output buses is identified for each capacitor.

This is not an extensive capacitor list. Capacitors from other vendors are available with comparable specifications. Those listed are for guidance. The RMS ripple current rating and ESR (at 100 kHz) are critical parameters necessary to ensure both optimum regulator performance and long capacitor life.

Table 4. Input/Output Capacitors(1)

Capacitor Vendor,
Type Series (Style)		 Capacitor Characteristics Quantity
Working
Voltage
(V)		 Value
(µF)		 Max. ESR at 100 kHz (Ω) Max Ripple Current at 85°C (Irms) (mA) Physical Size (mm) Input Bus Output Bus Vendor Part No.
No Turbo Trans TurboTrans (Cap Type)(2)
Panasonic 25 1000 0.043 1690 16 × 15 1 ≥ 2(3) N/R(4) EEUFC1E102S
FC (Radial) 25 1800 0.029 2205 16 × 20 1 ≥ 1(3) N/R(4) EEUFC1E182
FC (SMD) 25 2200 0.028 2490 18 × 21,5 1 ≥ 1(3) N/R(4) EEVFC1E222N
FK (SMD) 25 1000 0.060 1100 12,5×13,5 1 ≥ 2(5) N/R(4) EEVFK1V102Q
United Chemi-Con
PTB Poly-Tant (SMD) 6.3 330 0.025 2600 7,3x4,3x 2,8 N/R(6) 2 - 4(3) (C) ≥ 2(2) 4PTB337MD6TER
LXZ, Aluminum (Radial) 25 680 0.068 1050 10 × 16 1 1 - 3(3) N/R(4) LXZ25VB681M10X20LL
PS, Poly-Alum (Radial) 16 330 0.014 5060 10 × 12,5 2 2 - 3 (B) ≥ 2(2) 16PS330MJ12
PXA, Poly-Alum (SMD) 16 330 0.014 5050 10 × 12,2 2 2 - 3 (B) ≥ 2(2) PXA16VC331MJ12TP
PS, Poly-Alum (Radial) 6.3 680 0.010 5500 10 × 12,5 N/R(6) 1 - 2 (C) ≥ 1(2) 6PS680MJ12
PXA, Poly-Alum (Radial) 6.3 680 0.010 5500 10 × 12,2 N/R(6) 1 - 2 (C) ≥ 1(2) PXA6.3VC681MJ12TP
Nichicon, Aluminum 25 560 0.060 1060 12,5 × 15 1 ≥ 2(3) N/R(4) UPM1E561MHH6
HD (Radial) 25 680 0.038 1430 10 × 16 1 ≥ 2(3) N/R(4) UHD1C681MHR
PM (Radial) 35 560 0.048 1360 16 × 15 1 ≥ 2(3) N/R(4) UPM1V561MHH6
Panasonic, Poly-Alum 2.0 390 0.005 4000 7,3×4,3×4,2 N/R(6) N/R(6) (B) ≥ 2(2) EEFSE0J391R (VO ≤ 1.6V)(7)
Sanyo
TPE, Poscap (SMD) 4 680 0.015 3900 7,3 × 4,3 N/R(6) 1 - 3 (C) ≥ 1(2) 4TPE680MF (VO ≤ 2.8V)(7)
TPE Poscap(SMD) 2.5 470 0.007 4400 7,3 × 4,3 N/R(6) 1 - 2 (B) ≥ 2(2) 2R5TPE470M7 (VO ≤ 1.8V)(7)
TPD Poscap (SMD) 2.5 1000 0.005 6100 7,3 × 4,3 N/R(6) 1 (B) ≥ 1(2) 2R5TPD1000M5 (VO ≤1.8V)(7)
SA, OS-CON (Radial) 16 1000 0.015 9700 16 × 26 1 1 - 3 N/R(4) 16SA1000M
SP OS-CON ( Radial) 10 470 0.015 4500 10 × 11,5 N/R(6) 1 - 3 (C) ≥ 2(2) 10SP470M
SEPC, OS-CON (Radial) 16 330 0.016 4700 10 × 12,7 2 2 - 3 (B) ≥ 2(2) 16SVP330M
SVPA, OS-CON (SMD) 6.3 820 0.012 4700 8 × 11,9 N/R(6) 1 - 2(3) (C) ≥ 1(2)(3) 6SVPC820M
AVX Tantalum, Series 3 6.3 680 0.035 2400 7,3×4,3×4,1 N/R(6) 2 - 7(3) N/R(4) TPSE477M010R0045
TPM Multianode 6.3 470 0.018 3800 7,3×4,3×4,1 N/R(6) 2 - 3(3) (C) ≥ 2(2)(3) TPME687M006#0018
TPS Series III (SMD) 4 1000 0.035 2405 7,3 × 5,7 N/R(6) 2 - 7(3) N/R(4) TPSV108K004R0035 (VO≤2.2V)(7)
Kemet, Poly-Tantalum 6.3 470 0.040 2000 7,3×4,3×4 N/R(6) 2 - 7(3) N/R(4) T520X337M010AS
T520 (SMD) 6.3 330 0.015 3800 7,3×4,3×4 N/R(6) 2 - 3 (B) ≥ 2(2) T530X337M010AS
T530 (SMD) 4 680 0.005 7300 7,3×4,3×4 N/R(6) 1 (B) ≥ 1(2)
T530X687M004ASE005
(VO≤3.5V)(7)
T530 (SMD) 2.5 1000 0.005 7300 7,3×4,3×4 N/R(6) 1 (B) ≥ 1(2) T530X108M2R5ASE005 (VO≤2.0V)(7)
Vishay-Sprague      
594D, Tantalum (SMD) 6.3 1000 0.030 2890 7,2×5,7×4,1 N/R(6) 1 - 6 N/R(4) 594D108X06R3R2TR2T
94SA, Os-con (Radial) 16 1000 0.015 9740 16 × 25 1 1 - 3 N/R(4) 94SA108X0016HBP
94SVP Os-Con (SMD) 16 330 0.017 4500 10 × 12,7 2 2 - 3 (C) ≥ 1(2) 94SVP827X06R3F12
Kemet, Ceramic X5R 16 10 0.002 – 3225 1 ≥ 1(8) (A)(2) C1210C106M4PAC
(SMD) 6.3 47 0.002 N/R(6) ≥ 1(8) (A)(2) C1210C476K9PAC
Murata, Ceramic X5R 6.3 100 0.002 – 3225 N/R(6) ≥ 1(8) (A)(2) GRM32ER60J107M
(SMD) 6.3 47 N/R(6) ≥ 1(8) (A)(2) GRM32ER60J476M
25 22 1 ≥ 1(8) (A)(2) GRM32ER61E226K
16 10 1 ≥ 1(8) (A)(2) GRM32DR61C106K
TDK, Ceramic X5R 6.3 100 0.002 – 3225 N/R(6) ≥ 1(8) (A)(2) C3225X5R0J107MT
(SMD) 6.3 47 N/R(6) ≥ 1(8) (A)(2) C3225X5R0J476MT
16 10 1 ≥ 1(8) (A)(2) C3225X5R1C106MT0
16 22 1 ≥ 1(8) (A)(2) C3225X5R1C226MT
(1) Capacitor Supplier Verification
Please verify availability of capacitors identified in this table. Capacitor suppliers may recommend alternative part numbers because of limited availability or obsolete products. In some instances, the capacitor product life cycle may be in decline and have short-term consideration for obsolescence.
RoHS, Lead-free and Material Details
See the capacitor suppliers regarding material composition, RoHS status, lead-free status, and manufacturing process requirements. Component designators or part number deviations can occur when material composition or soldering requirements are updated.
(2) Required capacitors with TurboTrans. See the TransTrans Application information for Capacitor Selection
Capacitor Type Groups by ESR (Equivalent Series Resistance) :
  • Type A = (100 < capacitance × ESR ≤ 1000)
  • Type B = (1,000 < capacitance × ESR ≤ 5,000)
  • Type C = (5,000 < capacitance × ESR ≤ 10,000)
(3) Total bulk nonceramic capacitors on the output bus with ESR of ≥ 15mΩ to ≤ 30mΩ requires an additional ≥ 200 μF of ceramic capacitor.
(4) Aluminum Electrolytic capacitor not recommended for the TurboTrans due to higher ESR × capacitance products. Aluminum and higher ESR capacitors can be used in conjunction with lower ESR capacitance.
(5) Output bulk capacitor's maximum ESR is ≥ 30 mΩ. Additional ceramic capacitance of ≥ 200 μF is required.
(6) N/R – Not recommended. The voltage rating does not meet the minimum operating limits.
(7) The voltage rating of this capacitor only allows it to be used for output voltage that is equal to or less than 80% of the working voltage.
(8) Maximum ceramic capacitance on the output bus is ≤ 1000 μF. Any combination of the ceramic capacitor values is limited to 1000 μF for non-TurboTrans applications. The total capacitance is limited to 10,000 μF which includes all ceramic and non-ceramic types.