SLVUCA1 November   2021 TPS7H1210-SEP

 

  1.   Trademarks
  2. 1Introduction
    1. 1.1 Features
    2. 1.2 Applications
  3. 2Setup
    1. 2.1 Input/Output Connectors and Jumper Descriptions
      1. 2.1.1 J1, J4 (–)VIN
      2. 2.1.2 J6 GND
      3. 2.1.3 J2, J5 (–)VOUT
      4. 2.1.4 J7 GND
      5. 2.1.5 J3 EN
      6. 2.1.6 TP1-5 Test Points
    2. 2.2 Equipment Setup
  4. 3Operation
  5. 4Adjustable Operation
  6. 5Test Results
    1. 5.1 Enable, Disable, and Soft Start Timing
    2. 5.2 Output Load Transients
    3. 5.3 PSRR
    4. 5.4 Noise Spectral Density
  7. 6Board Layout
  8. 7Schematic and Bill of Materials

7 Schematic and Bill of Materials

GUID-20211104-SS0I-N3VR-Z8RK-XMPQ3MMCLWKF-low.png Figure 7-1 TPS7H1210EVM (LP055B) Schematic

The TPS7H1210EVM schematic has a placeholder for use of a feed forward capacitance C1. Caution is encouraged when using a feed-forward (CFF) with the TPS7H1210-SEP device. While a feed-forward capacitor can provide some improvements in PSRR at certain frequencies, it also has additional risks. Specifically, a feed-forward capacitor can cause the FB pin to go to positive during shutdown, thus damaging the device. See Pros and Cons of Using a Feed-Forward Capacitor with a Low Dropout Regulator application report for additional information.

Table 7-1 TPS7H1210EVM (LP055B) Bill of Materials
Designator Qty Value Description Package-Ref PartNumber Manufacturer
!PCB1 1 Printed Circuit Board LP055 Any
C2, C8, C9, C10, C11, C12 6 10uF CAP, CERM, 10 µF, 50 V,+/- 10%, X7R, AEC-Q200 Grade 1, 1206 1206 CGA5L1X7R1H106K160AE TDK
C3 1 1uF CAP, CERM, 1 uF, 50 V, +/- 10%, X7R, 0805 805 C0805C105K5RACTU Kemet
C4, C6, C14 3 0.1uF CAP, CERM, 0.1 uF, 50 V, +/- 5%, X7R, 0805 805 C0805C104J5RACTU Kemet
C7 1 0.01uF CAP, CERM, 0.01 uF, 50 V, +/- 20%, X7R, 0805 805 C0805C103M5RACTU Kemet
H1, H2, H3, H4 4 Machine Screw, Round, #4-40 x 1/4, Nylon, Philips panhead Screw NY PMS 440 0025 PH B&F Fastener Supply
H5, H6, H7, H8 4 Standoff, Hex, 0.5"L #4-40 Nylon Standoff 1902C Keystone
J1, J2, J6, J7 4 Standard Banana Jack, Uninsulated, 8.9mm Keystone575-8 575-8 Keystone
J3 1 Header, 100mil, 3x1, Tin, TH Header, 3 PIN, 100mil, Tin PEC03SAAN Sullins Connector Solutions
J4, J5 2 SMA, 50 Ohm, Gold, TH SMA, TH 32K101-400L5 Rosenberger
R1 1 0 RES, 0, 1%, 0.5 W, AEC-Q200 Grade 0, 1210 1210 CRCW12100000Z0EA Vishay-Dale
R2 1 34.0k RES, 34.0 k, 1%, 0.125 W, AEC-Q200 Grade 0, 0805 805 ERJ-6ENF3402V Panasonic
R3 1 102k RES, 102 k, 1%, 0.125 W, AEC-Q200 Grade 0, 0805 805 ERJ-6ENF1023V Panasonic
R4 1 10.5k RES, 10.5 k, 1%, 0.125 W, AEC-Q200 Grade 0, 0805 805 ERJ-6ENF1052V Panasonic
R5 1 68k RES, 68 k, 5%, 0.125 W, AEC-Q200 Grade 0, 0805 805 ERJ-6GEYJ683V Panasonic
TP1, TP2, TP3 3 Test Point, Multipurpose, Red, TH Red Multipurpose Testpoint 5010 Keystone
TP4, TP5 2 Test Point, Multipurpose, Black, TH Black Multipurpose Testpoint 5011 Keystone
TP5, TP6 2 Test Point, Multipurpose, Yellow, TH Yellow Multipurpose Testpoint 5014 Keystone
U1 1 16.5-V, 1-A, Negative Linear Regulator in Space Enhanced Plastic VQFN20 TPS7H1210MRGWSEP Texas Instruments
C1 0 0.01uF CAP, CERM, 0.01 uF, 50 V, +/- 20%, X7R, 0805 805 C0805C103M5RACTU Kemet
C5, C13 0 47uF CAP, TA, 47 uF, 35 V, +/- 20%, 0.9 ohm, AEC-Q200 Grade 1, SMD 7343-43 TAJE476M035RNJ AVX
FID1, FID2, FID3 0 Fiducial mark. There is nothing to buy or mount. N/A N/A N/A