Table 1-1 Recommended Operating
Conditions for BQ25820EVM
|
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 |
IIN
(J1) |
Input current of the EVM |
|
|
10(3)(4) |
A |
IOUT
(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 |
2(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 high spike above input voltage (in buck mode) or output
voltage (in boost mode) level. Switch node voltage can swing up to input
or output + inductive spike level. High side gate drives can swing
up to 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 IIN pin. The current limiting feature can be
disabled by setting EN_IIN_PIN bit to '0', changing IIN pin resistor, or
shorting IIN 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.