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VOUT = 1.15 V

20 mV/div

Load Current

300 mA

115 mA

100 mA/div

V = 3.6 V,
VSEL = H

l

5 s/div

m

ENABLE

2 V/div

VOUT

0 V

0.9 V

500 mV/div

V = 3.6 V,

R

= 2.5

I

Load

W

100 s/div

m

Test Results

Figure 3. Load Transient, 300 mA to 115 mA step, V

I

= 3.6 V, VOUT = 1.15 V

Figure 4. Start up from Enable, V

I

= 3.6 V, VOUT = 0.9 V, R

Load

= 2.5

4

TPS6227xEVM-306

SLVU234 – February 2008

Submit Documentation Feedback

Summary of Contents for TPS6227xEVM-306

Page 1: ...up from Enable VI 3 6 V VOUT 1 15 V RLoad 2 5 3 2 Load Transient 115 mA to 300 mA step VI 3 6 V VOUT 1 15 V 3 3 Load Transient 300 mA to 115 mA step VI 3 6 V VOUT 1 15 V 4 4 Start up from Enable VI 3...

Page 2: ...per between pin 1 and 2 VSEL and H sets the output voltage to 1 15V This jumper is a digital input to the Connecting the shorting jumper between pin 2 and 3 VSEL and L JP2 VSEL TPS62270 to set the out...

Page 3: ...V 3 6 V VSEL H I 5 s div m Test Results This section provides typical performance waveforms Figure 1 through Figure 7 using the TPS6227XEVM 306 printed circuit board Figure 1 Start up from Enable VI 3...

Page 4: ...div m ENABLE 2 V div VOUT 0 V 0 9 V 500 mV div V 3 6 V R 2 5 I Load W 100 s div m Test Results Figure 3 Load Transient 300 mA to 115 mA step VI 3 6 V VOUT 1 15 V Figure 4 Start up from Enable VI 3 6 V...

Page 5: ...OUT 0 9 V Load Current 272 mA 20 mV div 90 mA 100 mA div V 3 6 V VSEL L I 5 s div m Test Results Figure 5 Load Transient 90 mA to 272 mA step VI 3 6 V VOUT 0 9 V Figure 6 Load Transient 272 mA to 90 m...

Page 6: ...igure 8 through Figure 10 show the board layout for the TPS6227XEVM 306 printed wire board PWB The nodes with high switching frequencies and currents are kept as short as possible to minimize trace in...

Page 7: ...www ti com Board Layout Figure 8 Assembly Layer Figure 9 Top Layer Routing SLVU234 February 2008 TPS6227xEVM 306 7 Submit Documentation Feedback...

Page 8: ...hematic Schematic and Bill of Materials Figure 10 Bottom Layer Routing This section provides the TPS6227XEVM 306 schematic and bill of materials Figure 11 TPS6227XEVM 306 Schematic TPS6227xEVM 306 8 S...

Page 9: ...118 inch LPS3010 222ML Coilcraft IC 2 25 MHz 400 mA 1 U1 TPS62270DRV Step Down SON 6 DRV TPS62270DRV TI Converter w selectable VOUT 2 Shunt 100 mil Black 0 1 929950 00 3M 1 PCB 1 50 x 1 50 inch HPA30...

Page 10: ...mperatures and voltages For additional information on TI s environmental and or safety programs please contact the TI application engineer or visit www ti com esh No license is granted under any paten...

Page 11: ...siness practice TI is not responsible or liable for any such statements TI products are not authorized for use in safety critical applications such as life support where a failure of the TI product wo...

Page 12: ...Mouser Electronics Authorized Distributor Click to View Pricing Inventory Delivery Lifecycle Information Texas Instruments TPS62270EVM 306...

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