USERS MANUAL ISL9230EVAL1Z AN1746 Rev 0.00 Evaluation Board Mar 30, 2012 Description Features The ISL9230 is a fully integrated high input voltage single-cell Complete Charger for Single-Cell Li-ion/Polymer Batteries Li-ion battery charger with power path management function. Current Path Management Optimize for Charge and System This charger performs the CC/CV charge function required by Currents Li-ion batteries. The charger can withstand an input voltage up Intelligent Timeout Interval Based on Actual Charge Current to 26V but is disabled when the input voltage exceeds 6.6V OVP threshold. The input current limit and charge current are 1% Charger Output Voltage Accuracy programmable with external resistors. When the battery Programmable Input Current Limit voltage is lower than 3.0V, the charger preconditions the Programmable Charge Current battery with 10% of the programmed charge current. When the charge current reduces to the programmable end-of-charge Charge Current Thermal Foldback for Thermal Protection (EOC) current level during the CV charge phase, the EOC Trickle Charge for Fully Discharged Batteries indicator (CHG) will toggle to a logic High to indicate the 26V Maximum Voltage at VIN Pin end-of-charge condition. Power Presence and Charge Indications The ISL9230 uses separate power paths to supply the system load and charge the battery. This feature allows the system to Ambient Temperature Range: -40C to +85C immediately operate with a completely discharged battery. 16 Ld 3x3 TQFN Package This feature also allows the charge to terminate when the Pb-Free (RoHS Compliant) battery is full while continuing to supply the system power from the input source, thus minimizing unnecessary charge/discharge cycles and prolonging the battery life. What is Needed The following instruments will be needed to perform testing: Two indication pins (PG and CHG) allow simple interface to a microprocessor or LEDs. Power Supplies: - PS1: DC 30V/2A Ordering Information - PS2: DC 20V/2A PART DESCRIPTION DC Electronic Load: 20V/2A ISL9230EVAL1Z Evaluation Board for ISL9230 Multimeters Function Generator Oscilloscope Cables and Wires AN1746 Rev 0.00 Page 1 of 8 Mar 30, 2012ISL9230EVAL1Z Quick Setup Guide (Refer to Figure 1) Step 6: Configure jumper shunts on JP12, JP13, JP4 and JP5 to set maximum input current limit DO NOT APPLY POWER UNTIL STEP 7 Step 7: Turn on Power Supplies and DC electronic load Step 1: Connect a 5V supply PS1 capable of delivering Step 8: LEDs D1 and D2 should be on, indicating normal 1.5A current (see Figure 1) charging operation Step 2: Connect a 3.7V supply PS2 with current capability Step 9: Turn off E-load 2 to check charge current only 1.5A (see Figure 1) Step 10: Check charge currents as configured in Table 3 Step 3: Connect voltmeters V1, V2 and V3 to monitor VIN, VBAT and VOUT (see Figure 1) Step 11: With a fixed charge current at CC mode, turn on E-load 2 at constant current mode and slowly Step 4: Connect a 2nd DC electronic load at CC mode, increase the current, monitor the currents out of E-load 2 (see Figure 1) both J1 and J3, until the current at J1 starts to decrease. Further increase of the current at J3 will Step 5: Insert a thermistor of type 103AT between 2 and result in a current decrease at J1 at the same 3 of jumper header JP9, or place a jumper shunt rate, indicating that the power DPPM function if between pin 1 and 2 to use the on board 10k working resistor to skip the NTC evaluation PS1 V1V2 - + V1V2 V3 PS2 - + - + E- Load1 - + E- Load2 FIGURE 1. CONNECTION OF INSTRUMENTS AN1746 Rev 0.00 Page 2 of 8 Mar 30, 2012