SLUUCT7C May   2023  – June 2024 BQ25756

 

  1.   1
  2.   Description
  3.   Get Started
  4.   Features
  5.   5
  6. 1Evaluation Module Overview
    1. 1.1 Introduction
    2. 1.2 Kit Contents
    3. 1.3 Device Information
    4. 1.4 General Texas Instruments High Voltage Evaluation (TI HV EMV) User Safety Guidelines
      1. 1.4.1 General Safety Information
  7. 2Hardware
    1. 2.1 Board Parameters
    2. 2.2 IO and Jumper Descriptions
    3. 2.3 Recommended Operating Conditions
    4. 2.4 Equipment
      1. 2.4.1 Equipment Set Up
      2. 2.4.2 Equipment - Using a CV Load
      3. 2.4.3 Equipment Setup - Using a CV Load
  8. 3Hardware Design Files
    1. 3.1 Schematic
    2. 3.2 PCB Layout
    3. 3.3 Bill of Materials
  9. 4Additional Information
    1. 4.1 Trademarks
  10. 5Revision History

2.3 Recommended Operating Conditions

Table 2-5 Recommended Operating Conditions for BQ25756EVM
Description MIN TYP MAX UNIT
VIN (J1) Input voltage to the EVM 4.2 55(1) V
VOUT (J3) Output voltage of the EVM 3.3 55(1) V
ILIM_HIZ (J1) Input current of the EVM 10(3)(4) A
ICHG (J3) Output current of the EVM 10(3) A
Regulator output power Output power of the EVM 400(3) W
EXT_DRV (J6) Voltage applied to DRV_SUP pin of the regulator 4 11 V
IAC Sense Resistor Input current sense resistor 2 5(5) 10 mΩ
EVM Operating Ambient Temperature (TA) 25(2) °C
(1) Due to the high di/dt and dv/dt electrical flow associated with switch-mode power supplies, nodes on the EVM can have a high spike above the input voltage (in buck mode) or output voltage (in boost mode) level. Switch node voltage can swing up to the "input or output + inductive spike" level. High side gate drives can swing up to the "switch node voltage + 11V (DRV_SUP supply voltage dependent) + gate drive inductive spike" level. Safety precautions must be observed at all times.
(2) Connectors, bump-ons, jumpers on the EVM are not a good choice for evaluation under temperature greatly deviated from room temperature of 25°C. Please refer to BOM for temperature rating of board components.
(3) Thermal monitoring (for example, using a thermal camera) is recommended if power stage output current > 5A or total output power > 100W.
(4) Default EVM input current limit is set to 8A through the ILIM_HIZ pin. The current limiting feature can be disabled by setting EN_ILIM_HIZ_PIN bit to '0', changing ILIM_HIZ pin resistor, or shorting ILIM_HIZ pin to PGND through JP11.
(5) The input sense resistor is optional and the sense resistor can be removed. For an USB-C EPR operation, a 5mΩ sense resistor is needed.