SLVUCH5 july 2023 LMQ64480-Q1 , LMQ644A0-Q1 , LMQ644A2-Q1
Working at an ESD-protected workstation, make sure that any wrist straps, bootstraps, or mats are connected and referencing the user to earth ground before power is applied to the EVM.
LABEL | DESCRIPTION |
---|---|
VIN+ | Positive input power connection |
VIN– | Negative input power connection |
VIN_EMI+ | Positive input power connection for EMI test. The minimum operating voltage is 12 V at this input. |
VIN_EMI- | Negative input power connection for EMI test. The minimum operating voltage is 12 V at this input. |
VOUT1+ | CH1 Positive output power connection |
VOUT1– | CH1 Negative output power connection |
VOUT2+ | CH2 Positive output power connection |
VOUT2– | CH2 Negative output power connection |
LABEL | DESCRIPTION |
---|---|
VINS+ | Positive input sense pin for measuring efficiency. |
VINS– | Negative input sense pin for measuring efficiency. |
VOUT1S+ | CH1 positive output sense pin for measuring efficiency, and line and load regulation. |
VOUT1S– | CH1 negative output sense pin for measuring efficiency, and line and load regulation. |
VOUT2S+ | CH2 positive output sense pin for measuring efficiency, and line and load regulation. |
VOUT2S– | CH2 negative output sense pin for measuring efficiency, and line and load regulation. |
GND | Ground reference point |
SYNC(+) | Positive synchronization pulse input. |
SYNC(-) | Negative synchronization pulse input. |
MODE | Light load switching mode selection. Connect pin1 and pin2 for a FPWM mode . Connect pin2 and pin3 for an AUTO mode. Remove any jumper when external synchronization pulse is applied to SYNC. |
DITH | Spread spectrum enable, disable. Connect pin1 and pin2 to disable the spread spectrum. Remove any jumper to enable the spread spectrum. The EVM needs to restart after changing the jumper setting. |
EN1 | CH1 enable, disable. Connect pin1 and pin2 to enable CH1. Connect pin2 and pin3 to disable CH1. Remove any jumper when programing the line UVLO using a resistor divider. Populate the external UVLO resistor divider. |
EN2 | CH2 enable, disable. Connect pin1 and pin2 to enable CH2. Connect pin2 and pin3 to disable CH2. Remove any jumper when programing the line UVLO using a resistor divider. Populate the external UVLO resistor divider. |
VSEL1 | CH1 output voltage selection. Connect pin1 and pin2 for a fixed 5-V output. Connect pin2 and pin3 for a fixed 3.3-V output. Remove any jumper when programing the regulation target using an external resistor divider. Populate the external feedback resistor divider. |
VSEL2 | CH2 output voltage selection. Connect pin1 and pin2 for a 5-V output. Connect pin2 and pin3 for a 3.3-V output. Remove any jumper when programing the regulation target using an external resistor divider. Populate the external feedback resistor divider. |
PG1 | Probe point for CH1 power-good indicator. A pullup resistor is connected to VCC. |
PG2 | Probe point for CH2 power-good indicator. A pullup resistor is connected to VCC. |