SLVUDX5 June   2026 TPSM65660

 

  1.   1
  2.   Description
  3.   Features
  4.   4
  5. 1Evaluation Module Overview
    1. 1.1 Introduction
    2. 1.2 Kit Contents
    3. 1.3 Specification
    4. 1.4 Device Information
    5.     General Texas Instruments High Voltage Evaluation (TI HV EVM) User Safety Guidelines
  6. 2Hardware
    1. 2.1 Additional Images
    2. 2.2 Power Requirements
    3. 2.3 Setup and Operation
  7. 3Implementation Results
    1. 3.1 Evaluation Setup
    2. 3.2 Performance Data and Results
  8. 4Hardware Design Files
    1. 4.1 Schematics
    2. 4.2 PCB Layouts
    3. 4.3 Bill of Materials (BOM)
  9. 5Additional Information
    1. 5.1 Trademarks

2.3 Setup and Operation

This section describes the connectors, test points, and jumpers on the EVM and how to properly connect, set up, and use the TPSM65660EVM. See Figure 2-3 for location of connectors and jumpers and typical setup.

SignalConnector and Test PointsDescription
VINJ1, TP1, VIN_S1The terminal block J1 is used as the input of the module. Apply input voltage between J1 and J2. TP1 and VIN_S1 can be used as positive DMM connection for VIN sensing. TP2 is used as the negative DMM connection for VOUT sensing.
VOUTJ3, TP3The terminal block J3 is used as the output of the module. Connect the output load between J3 and J4.
TP3 (S+) is used as the positive DMM connection for VOUT sensing. TP5 (S–) is used as the negative DMM connection for VOUT sensing.
GNDTP2, TP4, TP5Ground of the converter. TP4 can be used as any ground connector as needed.
ENJ5The EN jumper (J5) is used to enable or disable the EVM.
To use the external UVLO feature, populate R11 and R14 and remove the EN jumper shunt. Note that for accurate shutdown quiescent current measurement, these resistors must be removed (if used) and the EN jumper shunt moved to OFF.
MODE/SYNCJ6The MODE jumper (J6) is used to select the operating mode. With MODE jumper removed, MODE pin in grounded and device operates in the auto mode. The device operates in automatic PFM/FPWM mode depending on load current. With MODE jumper installed, MODE pin is connected to VCC and device operates in FPWM mode, the device operates at fixed frequency under all load conditions.
The MODE/SYNC pin is also the frequency synchronization input. To synchronize the device to an external clock, remove the MODE jumper shunt and apply the clock between the MODE/SYNC pin of J6 and GND
PGOODJ12The PGOOD J12 is used to monitor the power-good indicator. This flag indicates whether the output voltage has reached the regulation level. PGOOD is an open-drain output that is tied to VCC through a 100kΩ resistor (R5) on the EVM.
FB ConnectionsJ11The jumper J11 is used to select the EVM output voltage setting. In the factory default configuration, the EVM is configured for external adjustable setting for 12V output. Keep jumper open for configuring in adjustable output voltage. Install jumper between FB Pin and VCC for 5V fixed output and between FB and GND for 3.3V.
Note: install R2 for fixed output configuration to close the loop.
CNFG/SYNCOUT J7 Resistor to GND for the primary device with external comp. Short to VCC for Primary device with internal comp. Do not float if R12 is removed.
Note: for this EVM, while using external comp, remove two output caps.
BIASJ8The BIAS Jumper (J8) acts as an auxiliary input to the internal LDO regulator. C20 helps bypassing the switching noise. In the EVM factory default configuration, BIAS is connected to VOUT through R2.
To change the LDO input to an available external supply from 3.3V to 30V, depopulate R2, and connect this pin to the external supply directly.
If configured for fixed output voltage of 3.3V or 5V output, R2 must be installed to close the control loop.
See also the TPSM65660 datasheet.
Loop response plotJ13, TP4When using the adjustable output voltage mode, a Bode plot measurement can be taken using the connection shown in Figure 2-4. R3 must be populated for this test, and probes must have a ground connection to TP4.
In the fixed 3.3V or 5V output voltage configuration, a Bode plot measurement cannot be taken. TI suggests to run a step load response to evaluate the loop stability.
DRSS/MCOMM J9, J10 Dual Random Spread-Spectrum (DRSS) select pin. See also Table 2-1 for available DRSS options. If configured for dual-phase operation, this pin becomes a mode communication pin between a primary and a secondary device. For dual-phase operation, tie together the MCOMM pins of the primary and secondary devices.
Table 2-1 DRSS/MCOMM Selection
DRSS/MCOMM Pin DRSS Slew Rate Control
Short to VCC Enabled, ±10%, 6kHz Enabled
Float Enabled, ±10%, 6kHz Enabled
150kΩ to PGND Enabled, ±10%, 6kHz Disabled
49.9kΩ to PGND Disabled Disabled
Short to PGND Disabled Disabled
TPSM65660EVM TPSM65660EVM Setup Figure 2-3 TPSM65660EVM Setup
TPSM65660EVM TPSM65660EVM Bode Connections Figure 2-4 TPSM65660EVM Bode Connections