Texas Instruments TPS7A4700 Evaluation Module TPS7A4700EVM-094 TPS7A4700EVM-094 데이터 시트
제품 코드
TPS7A4700EVM-094
Setup
2
Setup
This section describes the connectors and headers on the EVM as well as how to properly connect, setup
and use the TPS7A47xxEVM-094. See the assembly layer diagram,
and use the TPS7A47xxEVM-094. See the assembly layer diagram,
, for the location and
orientation of referenced components.
2.1
Input/Output Connector-Headers and Jumper Descriptions
•
J1 V
IN
– Positive (+) input power supply voltage test and measurement header
•
J2 GND – Ground and measurement header
•
J3 V
OUT
– Regulator output (up to 1 A)
•
J4 GND – Ground return from the load (up to 1 A)
•
J5 (S+) – V
OUT
, Kelvin connection V
OUT
•
J5 (S–) – GRD, Kelvin connection Ground
•
J6 and J7 – Extra GRD connections
•
J8 – Enable jumper for external resistor divider
•
J9 – Enable jumper for the EVM
•
J10 – Header for selecting the appropriate output voltage
NOTE:
The positive input lead and ground return lead from the input power supply should be twisted
and kept as short as possible to minimize EMI and source inductance. Additional bulk
capacitance in the form of a Tantalum cap (47 µF; 35 V) has been added to the EVM at C1
to counter source inductances that may cause ringing on the load transient waveform during
higher current transients. This bulk capacitance should not be necessary in a typical
application circuit.
capacitance in the form of a Tantalum cap (47 µF; 35 V) has been added to the EVM at C1
to counter source inductances that may cause ringing on the load transient waveform during
higher current transients. This bulk capacitance should not be necessary in a typical
application circuit.
Output Voltage Set Note: Set the output voltage by connecting J10 header pins, each
assigned to a given voltage level, to ground where V
assigned to a given voltage level, to ground where V
OUT
= V
REF
+ (Sum of the jumper
voltages). J10 header pins are numbered sequentially, odd pins (1, 3, 5...15) ascending
leftward of pin 1 on the top row. All odd pins are connected to ground. Each even pin is
numbered right to left sequentially (2, 4, 6…16) on the bottom row and each even pin is
assigned a unique voltage level. See the pin-to-pin output voltage assignments in
leftward of pin 1 on the top row. All odd pins are connected to ground. Each even pin is
numbered right to left sequentially (2, 4, 6…16) on the bottom row and each even pin is
assigned a unique voltage level. See the pin-to-pin output voltage assignments in
Table 1. J10 Jumper Voltages
V
OUT
= V
REF
(1)
+ Sum of Voltage Levels
Voltage Level
Voltage Set Pins
Ground Pins
100 mV
16
15
200 mV
14
13
400 mV
12
11
800 mV
10
9
1.6 V
8
7
3.2 V
6
5
6.4 V
4
3
6.4 V
2
1
(1)
See the data sheet for V
REF
value. Publication: SBVS204
Example: Set V
OUT
to 3.0 V by connecting a shorting jumper from pin 8 to pin 7.
V
OUT
= V
REF
+ 1.6 V = 3.0 V
2.2
Soldering Guidelines
Any solder rework to modify the EVM for the purpose of repair or other application reasons must be
performed using a hot-air system to avoid damaging the integrated circuit (IC).
performed using a hot-air system to avoid damaging the integrated circuit (IC).
2
TPS7A47xxEVM-094 Evaluation Module
SLVU741A – May 2012 – Revised August 2013
Copyright © 2012–2013, Texas Instruments Incorporated