Texas Instruments Evaluation Module for DRV120 DRV120EVM DRV120EVM 数据表
产品代码
DRV120EVM
Operation
4
Operation
4.1
Safety
WARNING
This EVM does not provide any kind of safety isolation, therefore,
all voltages on the EVM are considered hazardous. Use isolated
equipment when working with the EVM. Minimize the risk of fire
hazard by replacing fuse F1 only with fuse T0.5AL250V.
all voltages on the EVM are considered hazardous. Use isolated
equipment when working with the EVM. Minimize the risk of fire
hazard by replacing fuse F1 only with fuse T0.5AL250V.
Power supply connectors of the EVM, P1 and P2, are protected by fuses F1 and F2, respectively. The
supply pin of the DRV110 or DRV120 IC is protected by Zener-diode; D3, allowing time for power supply
overcurrent protection to trip. It is not intended to carry significant currents continuously.
supply pin of the DRV110 or DRV120 IC is protected by Zener-diode; D3, allowing time for power supply
overcurrent protection to trip. It is not intended to carry significant currents continuously.
Components on the EVM may become hot in normal use or because of abnormal configuration or violation
of the operating conditions.
of the operating conditions.
CAUTION
Do not leave the EVM powered when unattended.
4.2
Power-up Procedure
CAUTION
Always assume the entire EVM has fully-accessible and active high voltages.
When using the EVM to change measurement setup, access jumpers, wire test instruments, supplies or
loads, use the following procedures:
loads, use the following procedures:
1. De-energize the TI HV EVM and all its inputs, outputs and electrical loads before performing any
electrical or diagnostic measurements. Revalidate that the TI HV EVM power has been safely de-
energized.
energized.
2. Once the EVM is de-energized, proceed with the required electrical circuit configurations, wiring,
measurement equipment connections, and other application needs Continue to assume the EVM
circuit and measuring instruments are electrically live.
circuit and measuring instruments are electrically live.
3. Once EVM readiness is complete, energize the EVM.
Before connecting a load to the EVM it is recommended to test that board configuration and device power
supply biasing is correctly set. The following procedure is recommended:
supply biasing is correctly set. The following procedure is recommended:
1. Ensure jumpers JP1 and JP2 are in place and that JP9 is left open.
2. Configure the board to test DRV110 or DRV120.
3. Configure the board to the power-supply type used.
4. Turn trimmers R4, R5, and R6 in a counter clockwise direction, as far as they go.
5. If a 14-V (V
IN
) voltage is used for DRV110, ensure the V
IN
pin current is limited by the series
resistance. It is always a good practice, when applicable, to use too much resistance first and then to
decrease the resistance and observe the effect on supply voltages.
decrease the resistance and observe the effect on supply voltages.
6. During this procedure use a current limit in the EVM power supply. This current limit, along with Zener
diode D3, protects device V
IN
pin for over voltage.
7. Increase the power-supply voltage, if applicable, and observe supply voltages V
IN
and VLIMIT on the
board.
9
SLVU686B – March 2012 – Revised June 2012
DRV110 and DRV120 Evaluation Modules (EVM)
Copyright © 2012, Texas Instruments Incorporated