Texas Instruments TPS650250EVM-447 Evaluation Module TPS650250EVM-447 TPS650250EVM-447 데이터 시트
제품 코드
TPS650250EVM-447
5.18 JP3 – EN_DCDC3
5.19 JP4 – EN_LDO
5.20 JP5 – SCALE_DCDC3
5.21 JP6 – MODE
5.22 JP7 – EN_VDD_ALIVE
5.23 JP8 – DEF1
5.24 JP9 – DEF2
5.25 Factory Jumper Setup
Connector and Test Point Descriptions
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Placing a shorting bar between EN_DCDC3 and ON ties the EN pin of DCDC3 to VIN, thereby enabling
DCDC3. Placing a shorting bar between EN_DCDC3 and OFF ties the EN pin of DCDC3 to GND, thereby
disabling DCDC1.
DCDC3. Placing a shorting bar between EN_DCDC3 and OFF ties the EN pin of DCDC3 to GND, thereby
disabling DCDC1.
Placing a shorting bar between EN_ LDO and ON ties the pin EN_LDO to VIN, thereby enabling LDO1
and LDO2. Placing a shorting bar between EN_LDO and OFF ties the pin EN_LDO to GND, thereby
disabling LDO1 and LDO2.
and LDO2. Placing a shorting bar between EN_LDO and OFF ties the pin EN_LDO to GND, thereby
disabling LDO1 and LDO2.
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JP6 selects the forced PWM or Power Save Mode (PSM) operation for the switching converters
DCDC1,DCDC2 and DCDC3.
DCDC1,DCDC2 and DCDC3.
Placing a shorting bar between MODE and PWM ties the MODE pin of TPS650250 to VIN, thereby
selecting forced PWM operating mode for the DCDC converters. Placing a shorting bar between MODE
and PSM (Power Save Mode) ties the MODE pin of TPS650250 to GND, thereby selecting Power Save
Mode operating mode for the DCDC converters at light-load conditions. If Power Save Mode is selected
the DCDC converters will automatically switch to PWM mode at heavier load conditions.
selecting forced PWM operating mode for the DCDC converters. Placing a shorting bar between MODE
and PSM (Power Save Mode) ties the MODE pin of TPS650250 to GND, thereby selecting Power Save
Mode operating mode for the DCDC converters at light-load conditions. If Power Save Mode is selected
the DCDC converters will automatically switch to PWM mode at heavier load conditions.
Placing a shorting bar between EN_ VDD_ALIVE and ON ties the pin EN_VDD_ALIVE to VIN, thereby
enabling VDD_ALIVE. Placing a shorting bar between EN_VDD_ALIVE and OFF ties the pin
EN_VDD_ALIVE to GND, thereby disabling VDD_ALIVE.
enabling VDD_ALIVE. Placing a shorting bar between EN_VDD_ALIVE and OFF ties the pin
EN_VDD_ALIVE to GND, thereby disabling VDD_ALIVE.
JP8 selects the default output voltage for the switching converter DCDC1.
Placing a shorting bar between DEF1 and V-HI sets the default output voltage of DCDC1 to 3.3-V.
Placing a shorting bar between DEF1 and V-LOW sets the default output voltage of DCDC1 to 2.7-V.
JP8 selects the default output voltage for the switching converter DCDC2.
Placing a shorting bar between DEF1 and V-HI sets the default output voltage of DCDC2 to 2.5-V.
Placing a shorting bar between DEF1 and V-LOW sets the default output voltage of DCDC2 to 1.8-V.
The EVM comes from the factory with the following default jumper settings.
Table 2. TPS650250 EVM Factory Jumper Setup
Jumper
Shunt Location
JP1
Between ON and DCDC1
DCDC1 enabled
JP2
Between ON and DCDC2
DCDC2 enabled
JP3
Between ON and DCDC3
DCDC3 enabled
JP4
Between ON and LDO
LDO1 and LDO2 enabled
8
Using the TPS650250EVM Power Management IC for Li-Ion Powered Systems
SLVU290 – July 2009