SLUUCE8A February   2021  – October 2021 UCC25800-Q1

 

  1.   Trademarks
  2. 1 Description
  3. 2 Electrical Performance Specifications
  4. 3 Schematic Diagram
  5. 4 Description - How to Use
    1. 4.1 Typical Applications
    2. 4.2 Using the EVM with on-board Pre-regulator on Board
    3. 4.3 Using the EVM with an External DC Voltage Source
  6. 5 Test Setup
    1. 5.1 Test Setup Requirements
    2. 5.2 Test Setup Diagram
    3. 5.3 Test Points and Input / Output Terminals
  7. 6 Performance Data and Typical Characteristic Curves
    1. 6.1  Efficiency Result of the LLC Board with External DC Input Voltage
    2. 6.2  Efficiency Result of the LLC Board with Pre-regulator on Board
    3. 6.3  Efficiency Typical Results
    4. 6.4  Output Characteristics
    5. 6.5  Output Voltage Turn-on at Start Up
    6. 6.6  Output Ripple Voltage
    7. 6.7  Frequency Synchronized to External Signal
    8. 6.8  DIS-pin Enable and Dis-Enable
    9. 6.9  Load Transient Response
    10. 6.10 Switch-node Voltage and Current
    11. 6.11 Over-Current Limit and FLT-pin
    12. 6.12 CISPR-25 Class-5 Conducted EMI Test Result - Pass
    13. 6.13 Thermal Images at Full Load
  8. 7 Transformer Details
  9. 8 EVM Assembly and Layout
  10. 9 List of Materials
  11. 10Revision History

9 List of Materials

UCC28782EVM-030 list of materials for the schematic diagrams shown in Figure 3-1 and in Figure 3-2.

Table 9-1 UCC28782EVM-030 List of Materials
Quantity Designator Description Part Number Manufacturer
1 C1 Capacitor, ceramic, 10 µF, 50 V, 10%, X7R, AEC-Q200, Grade 1, 1206 CGA5L1X7R1H106K160AC

TDK

2

 C2, C8 Capacitor, ceramic, 1.0 µF, 25 V, 10%, X7R, AEC-Q200, Grade 1, 0603

CGA3E1X7R1E105K080AC

TDK
2 C3, C9 Capacitor, ceramic, 22 nF, 50 V, 10%, X7R, 0603 C0603C223K5RACTU

Kermet

2

 C4, C33 Capacitor, ceramic, 1.0 µF, 25 V, 10%, X7R, AEC-Q200, Grade 1, 0805

CGA4J3X7R1H105K125AB

TDK

3

 C5, C6, C12 Capacitor, ceramic, 2.2 µF, 50 V, 10%, X7R, AEC-Q200, Grade 1, 0805

CGA4J3X7R1H225K125AB

TDK
1 C12 Capacitor, ceramic, 0.22 µF, 16 V, 10%, X7R, 0402 GRM155R71C224KA12D MuRata

2

 C10, C11 Capacitor, ceramic, 2.2 µF, 10 V, 10%, X7R, 0805

C0805C225K8RACTU

Kermet

4

 C13, C22, C23, C31 Capacitor, ceramic, 10 µF, 50 V, 10%, AEC-Q200, Grade 1, 1210

CGA6P3X7S1H106K250AE

TDK

0

C14

Not used

1

 C15 Capacitor, ceramic, 10 µF, 50 V, 10%, X7S, AEC-Q200 Grade 1, 1210

CGA6P3X7S1H106K250AB

TDK

1

 C16 Capacitor, ceramic, 0.1 µF, 50 V, ±10%, X7R, AEC-Q200 Grade 1, 0805

CEU4J2X7R1H104K125AE

 TDK

0

C17, C18, C19

Deleted from the design

1

 C20 Capacitor, ceramic, 0.033 µF, 50 V, 5%, X7R, 0603

06035C333JAT2A

AVX
1 C21 Capacitor, ceramic, 100 pF, 100 V, 5%, NP0, AEC-Q200 Grade 1, 0603

GCM1885C2A101JA16D

 MuRata
1 C24, C34 Capacitor, ceramic, 2.2 µF, 100 V, ±10%, X7R, AEC-Q200 Grade 1, 1210

CGA6N3X7R2A225K230AB

TDK

5

 C25, C26, C27, C28, C29 Capacitor, ceramic, 10 µF, 50 V, ±10%, X7R, 1210

GRM32ER71H106KA12L

 MuRata

1

 C30 Capacitor, ceramic, 0.22 µF, 25 V, ±10%, X7R, AEC-Q200 Grade 1, 0603

GCM188R71E224KA55D

Murata
1 C32 Capacitor, ceramic, 1200 pF, 100 V, ±5%, C0G/NP0, 0603

GRM1885C2A122JA01D

 MuRata

1

 C35 Capacitor, ceramic, 0.01 µF, 50 V, 5%, C0G/NP0, AEC-Q200 Grade 1, 0603

CGA3E2C0G1H103J080AA

TDK
1 C36 Capacitor, ceramic, 1 µF, 16 V, 20%, X7R, AEC-Q200 Grade 1, 0603

GCM188R71C105MA64D

Murata
1 C37 Capacitor, 100 pF, 50 V,±1%, C0G/NP0, 0603

C0603C101F5GACTU

Kermet

0

C14

Not used

0

C7, C17, C18, C19

Deleted from the design

1

 D1 Diode, TVS, 5 V, bidirectional, SOD-323 PESD5V0L1BA,115 NXP Semiconductor

2

 D2, D4 Diode, Schottky 40 V, 1 A Surface Mount SMA CMSH1-40M TR13 Diodes, Inc.

0

 D3

Not used

1

 D5 Diode, Zener, 6.2 V, 150 mW, SOD-523F CZRU52C6V2 Comchip Technology

1

 D6

Diode, Schottky, 60 V, 3 A, AEC-Q101, SMA

B360AM-13-F

Diodes Inc.
1 D7

Diode, TVS, Bi, 36 V, SMB

SMBJ36CA-13-F

 Diodes Inc.

4

J1, J2, J3, J4

Header, 100mil, 1pos, Gold, TH

TSW-101-07-G-S

Samtec
1 L1

Coupled inductor, 1.5 µH, 17.5 A, 0.012 Ω, SMD

7448700015

 Wurth Elektronik
1 L2

Coupled inductor, 11 µH, 2.5 A, 0.03 Ω, SMD

744273102

 Wurth Elektronik
1 L3

Not used

2

P1, P2

TERM BLOCK HDR 2POS 90DEG 5MM

691313710002

 Wurth Elektronik

1

Plug for P1 or P2

Term Block 2Pos Plug for P1 or P2

691352710002

 Wurth Elektronik

1

P3

TERM BLOCK HDR 3POS 90DEG 5MM

691313710003

 Wurth Elektronik

1

Plug for P3

Term Block 3Pos Plug for P3

691352710003

 Wurth Elektronik
1 Q1 Transistor, NPN, 40 V, 0.6 A, AEC-Q101, SOT-23 SMBT2222AE6327HTSA1 Infineon Technologies

0

Q1

Q1 second source

MMBT2222A-7-F

Diodes Incorporated
1 Q2

MOSFET, N-CH, 60 V, 50 A, SO-8FL

NVMFS5C673NLWFAFT1G

 ON Semi
1 R1, R12 Resistor, 16.5 kΩ, 1%, 0.125 W, AEC-Q200 Grade 0, 0805 CRCW080516K5FKEA Vishay-Dale
1 R4

Not used
1 R5 Resistor, 549Ω, 5%, 0.125 W, AEC-Q200 Grade 0, 0805 CRCW0805549RFKEA Vishay-Dale
1 R6 Resistor, 6.34 kΩ, 1%, 0.125 W, AEC-Q200 Grade 0, 0805 CRCW08056K34FKEA Vishay-Dale
1 R7, R10 Resistor, 1.0 kΩ, 5%, 0.125 W, AEC-Q200 Grade 0, 0805 CRCW08051K00JNEA Vishay-Dale
1 R8, R13 Resistor, 51 Ω, 0.1%, 0.125 W, 0805 RG2012P-510-B-T5 Susumu Co Ltd
1 R9 Resistor, 1.00 kΩ, 1%, 0.1 W, AEC-Q200 Grade 0, 0603 CRCW06031K00FKEA Yageo America
1 R11 Resistor, 49.9 kΩ, 1%, 0.125 W, AEC-Q200 Grade 0, 0805 CRCW080549K9FKEB Vishay-Dale
1 R14 Resistor, 30.1 kΩ, 1%, 0.1 W, AEC-Q200 Grade 0, 0603 CRCW060330K1FKEA Vishay-Dale
1 R15 Resistor, 10.0 Ω, 1%, 0.1 W, AEC-Q200 Grade 0, 0603 CRCW060310R0FKEA Vishay-Dale
1 R16 Resistor, 34.0 kΩ, 1%, 0.1 W, AEC-Q200 Grade 0, 0603 CRCW060334K0FKEA Vishay-Dale
1 R17 Resistor, 100 Ω, 1%, 0.1 W, AEC-Q200 Grade 0, 0603 CRCW0603100RFKEA Vishay-Dale

1

 R18 Resistor, 0.01 Ω, 1%, 1 W, 1508 RL3720WT-R010-F Susumu Co Ltd
1 R19 Resistor, 2.32 kΩ, 1%, 0.1 W, AEC-Q200 Grade 0, 0603

CRCW06032K32FKEA

 Vishay-Dale

1

 R20 Resistor, 51.0 kΩ, 1%, 0.1 W, 0603 RC0603FR-0751KL

Yageo
1 R21 Resistor, 9.09 kΩ, 1%, 0.1 W, AEC-Q200 Grade 0, 0603

CRCW06039K09FKEA

 Vishay-Dale
1 R22 Resistor, 3.48 kΩ, 1%, 0.1 W, AEC-Q200 Grade 0, 0603 CRCW06033K48FKEA Vishay-Dale
1 R23 Resistor, 0 Ω, 1%, 0.25 W, AEC-Q200 Grade 0, 1206 CRCW12060000Z0EA Vishay-Dale

0

R2, R3

Not used
1 T1

Transformer, 1:1.67, 0.045 Ω Pri, 0.122-Ω Sec, 16.5 µH

750319177r02

Wurth Electronik
1 U1 Open Loop LLC Transformer Driver for Isolated Bias Supplies UCC25800AQDGNRQ1

Texas Instruments
1 U2, U3

Programmable Shunt Regulator with Optimized Reference Current, DBZ0003A (SOT-23-3)

ATL431LIBQDBZRQ1

 Texas Instruments
1 U4 2.2-MHz Wide VIN 65-V Non-synchronous Boost/SEPIC/Flyback Controller with Dual Random Spread Spectrum, WSON12

LM51561QDSSRQ1

 Texas Instruments