Test Summary
1.2
Performance Specification Summary
This section summarizes the performance specifications of the EVM.
gives the performance
specifications of the EVM.
Table 2. Performance Specification Summary
Specification
Test Conditions
Min
Typ
Max
Units
Input DC Voltage, V
I(DC)
V
REG
+0.5
5.0
6
(1)
Volts
Battery Charge Current, I
O(CHG)
1.5
(1)
Amps
Power Dissipation
Pin-Pout
5
Watts
(1)
The AC and USB FETs are rated for 18 VDC (all other pens are <6.5 V, see data sheet) but typically this high rating is for
transients protection and not for normal operation. The thermal layout on this PCB is optimal and can dissipate up to 5 W with an
ambient of 35°C, before the internal junction temperature reaches 125°C. If it is desired to apply DC voltages above 6 V, the
charging and load currents may have to be reduced to stay below the 125°C junction temperature. The IC automatically reduces
the charging current, with its thermal loop, once the temperature reaches ~12°C. Any further load reduction (on switchers or
LDOs) has to be done manually to reduce the junction temperatures. The 125°C threshold is somewhat hard to reach unless the
input voltage is high along with high load current, which is not typical.
2
Test Summary
This section shows the test setups used and the features available in evaluating the EVM.
2.1
EQUIPMENT – SM1/SM2, LDO, and Battery Load Boards not Provided
1. Computer running Windows
®
XP and the attached software.
2. EV2300 HPA002 I2C communication box, USB cable and I2C 4-lead cable (all purchased separately).
3. SM1/2 load board; 10-
Ω
, 1-W resistor load for each output TB1-1/2 and TB2-1/2. See
.
4. LDO load board: 33-
Ω
, 1-W each for J4-LDO0 to A1 GND, J5-LDO1 to A1 GND, J7-LDO2 to A1 GND;
511-
Ω
, 0.5-W pullup resistors J10-LED_PWM to TP29-SYS_OUT and PWM to TP29-SYS_OUT; 51-
Ω
,
1-W load resistors for J19-LDO3 to A2 GND, J18-LDO4 to A2 GND, J16-LDO5 to A2 GND. See
5. Battery-simulated load board: Two 5.6-
Ω
, 20-W and one 10-
Ω
, 5-W resistors in parallel and connected
TB7-1/2 (~2.19
Ω
). See
.
6. Dual power supply, 0-V to 5-V adjustable range, 0-A to 3-A adjustable current limit
7. Scope
8. DMM meter(s).
4
TPS658xxEVM Integrated Single-Cell, Lithium-Ion Battery- and Power-
SLVU154B – March 2006 – Revised October 2013
Management IC With I2C, LED Drives, Two Synchronous Buck, Boost, and
Copyright © 2006–2013, Texas Instruments Incorporated
Multiple LDOs