Home

TOREX XC9103/XC9104/XC9105 Series Step-up DC/DC Controllers Manual

1. F ceramic SD MA737 Tr XP161A1355P 50 737 Tr XP161A1355P 100 100 g 80 g 80 60 60 5 40 5 40 20 20 0 0 0 1 1 10 100 1000 0 1 1 10 100 1000 Output Current lour mA Output XC9103D091MR PWM 100kHz 3 3V XC9104D091MR PWM PFM 100kHz 3 3V L 22 H CDRH5D28 C 20 F ceramic L 22 H CDRH5D28 C 20 F ceramic SD MA737 Tr XP161A1355P 50 737 Tr XP161A1355P 100 100 80 g 80 60 60 5 40 5 40 20 20 0 0 0 1 1 10 100 1000 0 1 1 10 100 1000 Output Output Current lour mA 12 23 XC9103 XC9104 XC9105 Series TYPICAL PERFORMANCE CHARACTERISTICS Continued 2 Efficiency vs Output Current Continued XC9103D095MR PWM 500kHz 3 3V XC9104D095MR PWMPFM 500kHz 3 3V L 10 u H CDRH5D18 20 F ceramic L 10 u H CDRH5D18 C 20 4 F ceramic SD MA737 Tr XP161A1355P SD MA737 Tr XP161A1355P 100 100 80 80 60 60 5 40 5 40 20 20 0 0 0 1 1 10 100 1000 0 1 1 10 100 1000 Output Current lour mA Output Current lour mA XC9103D092MR PWM 180kHz 3 3V XC9104D092MR PWMPFM 180kHz 3 3V L 22 H CDRH5D28 C 47 F Tantalum L 22 H CDRH5D28 C 47 F Tantalum SD MA737 Tr XP161A1355P SD MA737 Tr XP161A1355P 100 100 80 80 ie iL 60 60 5 40 5 40 g 20 u 20 0 0 0 1 1 10 100 1000 0 1 1 10 100 1000 Output Current lour mA
2. 100mA Output Current Output Voltage VouT V Output Current lour mA Output Voltage VouT V Output Current lour mA TOIREX 15 23 XC9103 XC9104 XC9105 series E TYPICAL PERFORMANCE CHARACTERISTICS Continued 4 Output Voltage vs Power Supply Voltage 5 Supply Current 1 vs Power Supply Voltage XC9105D092MR 180kHz 3 3V XC9105D092MR 180kHz L 22 H CDRH5D28 C 20 F ceramic SD MA2Q737 TXP161A1355P s E 8 5 9 5 gt a a Vin 1 98V B lourz170mA Supply Voltage Vop V Supply Voltage Voo V 6 Supply Current 2 vs Power Supply Voltage 7 Stand By Current vs Power Supply Voltage XC9105D092MR 180kHz XC9105D092MR 180kHz lt T a p 5 E 3 3 5 5 E 0 2 10 Supply Voltage Vop V Supply Voltage Vop V 8 Oscillation Frequency vs Power Supply Voltage 9 Maximum Duty Ratio vs Power Supply Voltage XC9105D092MR 180kHz XC9105D092MR 180kHz Oscillation Frequency Fosc kHz Maximum Duty Cycle PFMDTY Supply Voltage Vop V Supply Voltage Vob V 16 23 XC9103 XC9104 XC9105 Series B IYPICAL PERFORMANCE CHARACTERISTICS Continued 10 PFM Duty Ratio vs Power Supply Voltage 11 Overcurrent Sense Voltage vs Power Supply Voltage XC9105D092MR 180kHz XC9105D092MR 180kHz Ta 25 C PFM Duty Ratio PFMDTY Overcurrent SENSE Voltage VimT mV a e 0 2 4 6 8 10 Supply Voltage Vop V Supply Voltage Vbb V 12 So
3. 28 Output Voltage 09 FB voltage e g FB Voltage 0 9V 2 0 3 9 3 300kHz oe 1 100kHz 4 Oscillation Frequency 180kHz 5 500kHz MR SOT 25 3 000 Reel Packages MR G SOT 25 3 000 Reel Oder Unit DR USP 6B 3 000 Reel DR G USP 6B 3 000 Reel The G suffix indicates that the products are Halogen and Antimony free as well as being fully RoHS compliant 2 23 XC9103 XC9104 XC9105 Series BLOCK DIAGRAM Current FB Ripple Detect and Generator GNC osc CE PWM FB CE CMOS INPUT EXT CMOS OUTPUT ll ABSOLUTE MAXIMUM RATINGS Ta 25 C PARAMETER SYMBOL RATINGS UNITS VDD pin Voltage VDD 0 3 12 0 V FB pin Voltage FB 0 3 12 0 V CE pin Voltage VCE 0 3 12 0 V EXT pin Voltage VEXT 0 3 0 3 V EXT pin Current IEXT 100 SOT 25 150 Power Dissipation Pd mW USP 6B 100 Operating Temperature Range Topr 40 85 Storage Temperature Range Tstg 40 125 TOIREX 3 23 XC9103 XC9104 XC9105 series MELECTRICAL CHARACTERISTICS XC9103B092MR XC9104B092MR XC9105B092MR XC9103D092MR XC9104D092MR XC9105D092MR fosc 180kHz Ta 25 C PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS CIRCUIT Output Voltage 3 234 3 300 3 366 V VIN VOUTSETX0 6 VDD 3 3V 2 Output Voltage Range VOUTSET IoUT
4. Voltage 2 VCEH Same as IDD1 0 65 V 5 CE Low Voltage 2 VCEL Same as IDD1 0 20 V 5 PWM High Voltage 2 VPWMH louT 1 0mA XC9105B D Vpp 0 2 V PWM Low Voltage 2 VPWML louT 1 0mA XC9105B D Vpp 1 0 V EAT High REXTH Same as 1 VExT Vour 0 4V 24 36 8 On Resistance ENT EO REXTL Same as 1 1 VExr 0 4V 16 24 Q On Resistance CE High Current ICEH Same as 1002 0 1 UA 5 CE Low Current ICEL Same as 1 2 CE 0V 0 1 UA 5 FB High Current IFBH Same as 1002 0 1 UA 5 FB Low Current Same as Ipp2 CE 0V 0 1 UA 5 Test Conditions Unless otherwise stated CL ceramic recommended MOSFET should be connected NOTE 1 Although the IC starts step up operations from of 0 8V the output voltage and oscillation frequency are stabilized at 00 gt 1 8 Therefore a of more than 1 8V is recommended when is supplied from VIN or other power sources 2 With the XC9105 series the CE pin also serves as a PWM PFM switching pin In operation PWM control is selected when the voltage at the CE pin is more than 0 2V On the other hand PWM PFM automatic switching control at a duty 25 is selected when the voltage at the CE pin is less than 1 0V and more than VcEH 3 The overcurrent limit circuit of this IC is designed to monitor the ripple voltage so please select your extern
5. 10mA Using 2501628 1 5 30 0 V FB Control Voltage VFB 0 882 0 900 0 918 V Supply Range 006 1 8 5 10 0 V Recommended circuit using 2501628 Operation Start Voltage VsT1 beak 0 9 V 9 Oscillation Start Voltage No external components connected 1 VST2 to Voltage applied 0 LH Bb Recommended circuit using 2501628 Operation Hold Voltage VHLD iSo ORA 0 7 V 3 Supply Current 1 IDD1 Same as VsT2 VDD 3 3V 45 64 UA 4 Supply Current 2 1002 Same as IDD1 FB 1 2V 17 24 UA Stand by Current ISTB Same as 1001 CE 0V 1 0 UA 5 Oscillation Frequency fosc Same as IDD1 153 180 207 kHz Maximum Duty Cycle MAXDTY Same as IDD1 75 81 87 Duty Rate PFMDTY No load XC9104B D 9105B D 20 28 36 Step input to FB Pulse width 2 0 S Sense Voltage 3 VLMT or more EXT Low level voltage 170 250 330 mV XC9103B 9104B 9105B Efficiency EFFI Recommended circuit using XP161A1355 85 Soft Start Time tss 5 0 10 0 20 0 ms CE High Voltage 2 VCEH Same as IDD1 0 65 V CE Low Voltage 2 VCEL Same as IDD1 0 20 V 5 PWM High Voltage 2 VPWMH louT 1 0mA XC9105B D Vpp 0 2 V PWM Low Voltage 2 VPWML louT 1 0mA XC9105B D Vpp 1 0 V EAT TOY REXTH Same as 1 VExT Vour 0 4V 24 36 s On Resistance Rext Same as 001 VexT 0 4V 16 24 Q 8 On Resistance CE High Current ICEH
6. 300mA x Vour VIN RsENsE 100 fosc 180 300 500kHz 50 fosc 100kHz CL Tantalum Type L 22u H CDRH5D28 SUMIDA fosc 300kHz 47 H CDRH5D28 SUMIDA fosc 100 180kHz Except when IOUT mA 100mA x Vour VIN 2 gt 22041 10 u H CDRH5D18 SUMIDA fosc 500kHz CL 16V 47 u F Tantalum Type 16MCE476MD2 NICHICHEMI Use the formula below when step up ratio and output current is large CL CL standard value x lour mA 300mA x Vour VIN RsENsE Not required but short out the wire CL AL Electrolytic Type L 22 u H CDRH5D28 SUMIDA fosc 300kHz 47 H CDRH5D28 SUMIDA fosc 100 180 2 Except when our mA 100mA x Vour VIN gt 2 gt 224H CL 16V 100 u F AL Electrolytic Type 10V 2 2 u F Ceramic Type Strengthen appropriately when step up ratio and output current is large RsENsE Not required but short out the wire CFB Set up so that fzfb 100kHz 8 23 XC9103 XC9104 XC9105 Series B TEST CIRCUITS Circuit D Circuit 2 Circuit 3 Circuit Circuit 5 Circuit 6 Pulse voltage is applied at the FB pin using the test circuit XC9103 XC9104 XC9105 series E TYPICAL PERFORMANCE CHARACTERISTICS 1 Output Voltage vs Output Current 10 23 Output Voltage VouT V Output Voltage VouT V Output Voltage VouT V XC9103D092MR PWM 180kHz 3 3V L 22 H CDRH5D28 C 20 F ceramic SD MA2Q737 Tr XP161A1355P 1 10
7. PRODUCT SERIES B With current limit function XC9103 9104 9105B09xMx D Without current limit function XC9103 9104 9105D09xMx represents oscillation frequency MARK OSCILLATION FREQUENCY PRODUCT SERIES 1 100 XC9103 9104 9105x091Mx 2 180 XC9103 9104 9105x092Mx 3 300 XC9103 9104 9105x093Mx 5 500 XC9103 9104 9105x095Mx represents production lot number 0 to 9 and A to Z reversed character of 0 to 9 and A to Z repeated G I J Q W excluded represents product series MARK PRODUCT SERIES 6 XC9103x09xDx Y XC9104x09xDx 9 XC9105x09xDx represents current limit function MARK FUNCTIONS PRODUCT SERIES B With current limit function XC9103 9104 9105B09xDx D Without current limit function XC9103 9104 9105D09xDx represents FB voltage value FB VOLTAGE PRODUCT SERIES 09 XC9103 9104 9105x09xDx MARK OSCILLATION FREQUENCY PRODUCT SERIES 1 100 XC9103 9104 9105x091Dx 2 180 XC9103 9104 9105x092Dx 3 300 XC9103 9104 9105x093Dx 5 500 XC9103 9104 9105x095Dx represents production lot number 0 to 9 and A to 2 repeated J W excluded Note No character inversion used 22 23 XC9103 XC9104 XC9105 Series The products and product specifications contained herein are subject to change without notice to improve performance characteristics Consult us or our repre
8. and saw tooth waveform When the voltage from the Error Amp s output is low the external switch will be set to ON lt PWM PFM Controller This circuit generates PFM pulses The PWM PFM automatic switching mode switches between PWM and automatically depending on the load The PWM PFM automatic switching mode is selected when the voltage of the CE pin is less than 1 0V and the control switches between PWM and PFM automatically depending on the load PWM PFM control turns into PFM control when threshold voltage becomes lower than voltage of error amps PWM control mode is selected when the voltage of the CE pin is more than VDD 0 2V Noise is easily reduced with PWM control since the switching frequency is fixed The series is suitable for noise sensitive portable audio equipment as PWM control can suppress noise during operation and PWM PFM Switching control can reduce consumption current during light load in stand by Vref 1 with Soft Start The reference voltage Vref FB pin voltage 0 9V is adjusted and fixed by laser trimming for output voltage settings please refer to the notes on next page To protect against inrush current when the power is switched on and also to protect against voltage overshoot soft start time is set internally to 10ms It should be noted however that this circuit does not protect the load capacitor CL from inrush current With the Vref voltage limited and depending upon the input to the err
9. 03 XC9104 XC9105 Series MELECTRICAL CHARACTERISTICS Continued XC9103B093MR XC9104B093MR XC9105B093MR XC9103D093MR XC9104D093MR XC9105D093MR fosc 300 kHz Ta 25 C PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS CIRCUIT Output Voltage VOUT 3 234 3 300 3 366 V VIN VOUTSETX0 6 VDD 3 3V 2 Output Voltage Range VOUTSET IoUT 10mA Using 2501628 1 5 30 0 V FB Control Voltage VFB 0 882 0 900 0 918 V SURP Bsa MEETS 1 8 10 0 V Recommended circuit using 2501628 Operation Start Voltage VsT1 0 9 V Oscillation Start Voltage Ver No external components CE connected 0 8 V 1 to Voltage applied FB 0V 2 Recommended circuit using 2501628 Operation Hold Voltage VHLD 0 7 V 9 Supply Current 1 IDD1 Same as VsT2 VDD 3 3V 62 88 UA Supply Current 2 1002 Same as IDD1 FB 1 2V 16 22 UA Stand by Current ISTB Same as DD1 CE 0V 1 0 UA 5 Oscillation Frequency fosc Same as IDD1 255 300 345 kHz 4 Maximum Duty Cycle MAXDTY Same as 75 81 87 Duty Rate PFMDTY No load XC9104B D 9105B D 24 32 40 96 PIER HERE Step input to FB Pulse width 2 0 u S Sanse Voltade d VLMT or more EXT Low level voltage 220 300 380 mV XC9103B 9104B 9105 Efficiency EFFI Recommended circuit using XP161A1355 85 Soft Start Time tss 5 0 10 0 20 0 ms CE High
10. 0kHz L2 47 lt The use of ceramic capacitor CL gt The circuit of the XC9103 04 05 series is organized by a specialized circuit which reenacts negative feedback of both voltage and current Also by insertion of approximately 10011 of a low and inexpensive sense resistor as current sense a high degree of stability is possible even using a ceramic capacitor a condition which used to be difficult to achieve Compared to a tantalum condenser because the series can be operated in a very small capacity it is suited to use of the ceramic capacitor which is cheap and small lt External Components gt Tr When a MOSFET is used When a NPN Tr Is used XP161A1355PR N ch Power MOSFET TOREX Note As the breakdown voltage of XP161A1355 is 8V take care with the power supply voltage With output voltages over 6V use the XP161A1265 with a breakdown voltage of 12V VST1 XP161A1355PR 1 2V MAX 2501628 SANYO RB 500 9 Adjust with Tr s HSE or load CB 2200pF Ceramic type set so that RB and pole is less than 70 of fosc CB 1 27tx RB x fosc x 0 7 XP161A1265PR 1 5V MAX SD MA2Q737 Schottky type MATSUSHITA L CL When Using Ceramic Type L 22 H CDRH5D28 SUMIDA fosc 100 180kHz 10 u H CDRH5D18 SUMIDA fosc 300 500kHz CL 10 u F Ceramic Type LMK325BJ106ML TAIYO YUDEN Use the formula below when step up ratio and output current is large CL CL standard value x
11. 100 Output Current lour mA XC9103D093MR PWM 300kHz 3 3V L 10 H CDRH5D18 C 20 F ceramic SD MA2Q737 Tr XP161A1355P 1 10 100 Output Current lour mA XC9103D091MR PWM 100kHz 3 3V L 22 H CDRH5D28 C 20 F ceramic SD MA2Q737 Tr XP161A1355P 1 10 100 Output Current lour mA Output Voltage Vour V Output Voltage Vour V Output Voltage XC9104D092MR PWMIPFM 180kHz 3 3V L 22 H CDRH5D28 20 F ceramic SD MA2Q737 161 1355 E og Output AM 1000 XC9104D092MR PWM PFM 300kHz 3 3V L 10 H CDRH5D18 C 20 F ceramic 50 20737 Tr XP161A1355P Output 2 AA 1000 XC9104D091MR PWMIPFM 100kHz 3 3V L 22 H CDRH5D28 20 F ceramic SD MA2Q737 Tr XP161A1355P 1 10 100 Output Current lour mA XC9103 XC9104 XC9105 Series TYPICAL PERFORMANCE CHARACTERISTICS Continued 1 Output Voltage vs Output Current Continued XC9103D095MR PWM 500kHz 3 3V XC9104D095MR PWMPFM 500kHz 3 3V L 10 H CDRH5D18 C 20 F ceramic L 10 H CDRH5D18 20 F ceramic SD MA2Q737 Tr XP161A1355P 50 20737 Tr XP161A1355P s 5 5 3 3 aa gt 2 nee aane ene o D T Vin 0 9V 1 2V 1 5V gt gt H 8 8 0 1 1 10 100 1000 0 1 1 10 100 1000 Output Current lour mA Output Current lour mA XC
12. 12000 4500 Lu 1 0 34 5 Nch Power 3 46 Mos FET x CeramicCL 2 XP161A1355 e for 200 10uF x2 LL o for400mA 3 4 5 LI CE CE PWM Output Current lout mA 1 23 XC9103 XC9104 XC9105 series CONFIGURATION LITE The dissipation pad for the USP 6B FB6 package should be solder plated i recommended mount pattern and metal NC5 H Lj 2VDD masking so as to enhance mounting strength and heat release 4 lt 3 GND If the pad needs to be connected to other del pins it should be connected to the USP 6 R BOTTOM VIEW No 2 pin SOT 25 TOP VIEW PIN NUMBER PIN NAME FUNCTION SOT 25 USP 6B 1 6 FB Output Resistor Connection 2 2 VDD Supply Voltage 5 CE Chip Enable CE PWM Serves as both PWM PFM switching pin and CE pin for XC9105 4 3 GND Ground 5 1 EXT External Transistor Connection 5 NC No Connection PRODUCT CLASSIFICATION Q Ordering Information 9103 5 PWM Control XC9104009X3 4Y8X6 2 PWM PFM Automatic Switching Control XCI105DOODOO D PWM PFM Manual Switching Control DESIGNATOR ITEM SYMBOL DESCRIPTION Type of DC DC Controller B current limiter 300kHz only D Without current limiter
13. 9103D092MR PWM 180kHz 3 3V XC9104D092MR PWMIPFM 180kHz 3 3V L 22 H CDRH5D28 C 47 F Tantalum L 22 H CDRH5D28 C 47 F Tantalum SD MA2Q737 Tr XP161A1355P SD MA2Q737 Tr XP161A1355P 5 5 o o gt gt 5 5 E 5 5 5 0 1 1 10 100 1000 0 1 1 10 100 1000 Output Current lour mA Output Current lour mA XC9103D093MR PWM 300kHz 3 3V XC9104D093MR PWM PFM 300kHz 3 3V L 22 H CDRH5D28 C 94 u F Tantalum L 22 5028 C 94 F Tantalum SD MA2Q737 Tr XP161A1355P SD MA2Q737 Tr XP161A1355P 2 aa 5 ER E AM 2 i 2 Vin 0 9V VA 5 A gt 1207 05v gt Vin 0 9V 12V 1 8V 4 1 5 8 M 0 1 1 10 100 1000 0 1 1 10 100 1000 Output Current lour mA Output Current lour mA TOISEX 11 23 XC9103 XC9104 XC9105 series E TYPICAL PERFORMANCE CHARACTERISTICS Continued 2 Efficiency vs Output Current Continued XC9103D092MR PWM 180kHz 3 3V XC9104D092MR PWMIPFM 180kHz 3 31 L 22 H CDRH5D28 C 20 F ceramic L 22 H CDRH5D28 C 20 F ceramic 50 737 Tr XP161A1355P SD MA737 Tr XP161A1355P 100 100 80 80 60 60 5 40 5 40 g 20 20 0 0 0 1 1 10 100 1000 0 1 1 10 100 1000 Output Output Current lour mA XC9103D093MR PWM 300kHz 3 3V XC9104D093MR PWMIPFM 300kHz 3 3V L 10 H CDRH5D18 C 20 F ceramic L 10 H CDRH5D18 C 20
14. L 20 F ceramic loUT2100 A 100mA 3 5 3 4 3 3 3 2 3 1 3 0 Time 2 0 ms div XC9103D093MR PWM 300kHz 3 3V Time 1 0 ms div Output Output Output XC9103 XC9104 XC9105 Series E TYPICAL PERFORMANCE CHARACTERISTICS Continued 3 Load Transient Response Continued XC9104D093MR PWMIPFM 300kHz 3 3V XC9104D093MR PWMPFM 300kHz 3 3V VIN 1 98V CL 20 F ceramic lOUT 100 A 100mA 100mA Output Current pss nn nd Time 1 0 ms div Time 10 0 ms div Output Voltage VouT V Output Current lour mA Output Voltage Vour V Output Current lour mA XC9103D092MR PWM 180kHz 3 3V XC9103D092MR PWM 180kHz 3 3V 5 98V CL 47 F Tantalum 1007 100 A 100mA Es 5 98V CL 47 F Tantalum louT2100 A 100mA ETE Output Voltage 100mA Output Current 100mA Output Current doa Time 1 0 ms div Time 4 0 ms div Output Voltage VouT V Output Current lour mA Output Voltage Vour V Output Current lour mA XC9104D092MR PWMIPFM 180kHz 3 3V XC9104D092MR PWMIPFM 180kHz 3 3V VIN 1 98V CL 47 F Tantalum 100 7 100 A 100 VIN 1 98V CL 47 F Tantalum lOUT 100 A 100mA 3 5 3 5 ERR Output Voltage wait Voltage ru E 100 nA Output Current Time 10 0 ms div Time 4 0 ms div e 88
15. Output XC9103D093MR PWM 300kHz 3 3V XC9104D093MR PWMPFM 300kHz 3 3V L 22 H CDRH5D28 C 94 F Tantalum L 22 H CDRH5D28 C 94 F Tantalum SD MA737 Tr XP161A1355P SD MA737 Tr XP161A1355P 100 3 g 80 860 i 5 g g ul 20 0 0 1 1 10 100 1000 0 1 1 10 100 1000 Output Current lour mA Output Current lour mA TOIREX 13 23 XC9103 XC9104 XC9105 series E TYPICAL PERFORMANCE CHARACTERISTICS Continued 3 Load Transient Response 14 23 Output Voltage VouT V Output Voltage Vour V Output Voltage Vour V XC9103D092MR PWM 180kHz 3 3V Output Voltage Output Current Time 1 0 ms div XC9104D092MR PWMIPFM 180kHz 3 3V VIN 1 98V CL 20 F ceramic loUT2100 A 100mA 3 4 BS NU Output Voltage Erara Output Current 3 3 3 2 34 100mA 3 0 Time 1 0 ms div XC9103D093MR PWM 300kHz 3 3V VIN 1 98V CL 20 4 F ceramic loUT2100 A 100mA 3 5 Time 1 0 ms div Output Current lour mA Output Output Current lour mA Output Voltage Vour V Output Voltage Vour V Output Voltage Vour V XC9103D092MR PWM 180kHz 3 3V VIN 1 98V CL 20 F ceramic louT2100m A 100 3 5 mS Output Voltage ES EET T roma 3 4 3 3 3 2 3 1 100 Output Current Time 2 0 ms div 3 0 XC9104D092MR PWMIPFM 180kHz 3 3V VIN 1 98V C
16. Same as 1002 0 1 UA 5 CE Low Current ICEL Same as Ipp2 CE 0V 0 1 UA 5 FB High Current IFBH Same as 1002 0 1 UA 5 FB Low Current Same as Ipp2 CE 0V 0 1 UA 5 Test Conditions Unless otherwise stated CL ceramic recommended MOSFET should be connected VouT 3 3V 2 0 louT 170mMA NOTE 1 Although the IC starts step up operations from of 0 8V the output voltage and oscillation frequency are stabilized at gt 1 8 Therefore a of more than 1 8V is recommended when is supplied from VIN or other power sources 2 With the XC9105 series the CE pin also serves as a PWM PFM switching pin In operation PWM control is selected when the voltage at the CE pin is more than 0 2V On the other hand PWM PFM automatic switching control at a duty 25 is selected when the voltage at the CE pin is less than 1 0V and more than 3 The overcurrent limit circuit of this IC is designed to monitor the ripple voltage so please select your external components carefully to Following current limiter circuit operations which in turn causes the IC s operations to stop the operations of the IC can be returned to normal with a toggle of the CE pin or by turning the power supply back on prevent ViMT being reached under low temperature conditions as well as normal operating conditions 4 23 XC91
17. TOIREX XC9103 XC9104 XC9105 series Ceramic Capacitor Compatible Step up DC DC Controllers ETR0404_005 GreenOperation Compatible GENERAL DESCRIPTION The XC9103 XC9104 XC9105 series are PWM PWM PFM auto switching manual switching controlled universal step up DC DC converter controllers Output will be stable no matter which load capacitors are used but should a low ESR capacitor be used RSENSE of about 0 1 will be required and phase compensation will be achieved This allows the use of ceramic capacitors and enables to obtain lower output ripple and small PCB design Tantalum and electrolytic capacitors can also be used in which case RSENSE becomes unnecessary With 0 9V internal voltage reference and by using externally connected two resistors output voltage can be set freely within a range of 1 5V to 30V The series is available in 300 kHz and 180 kHz frequencies the size of the external components can be reduced 100 kHz and 500 kHz are also available in custom options The XC9103 offers PWM operation The XC9104 offers PWM PFM automatic switching operation The PWM operation is shifted to the PFM operation automatically at light load so that it maintains high efficiency over a wide range of load currents The XC9105 offers both PWM and PWM PFM auto switching operations and it can be selected by external signal A current limiter circuit is built in to the IC except with the 500 kHz version and monitors the rippl
18. al components carefully to prevent ViMT being reached under low temperature conditions as well as normal operating conditions Following current limiter circuit operations which in turn causes the IC s operations to stop the operations of the IC can be returned to normal with a toggle of the CE pin or by turning the power supply back on TOIREX 5 23 XC9103 XC9104 XC9105 series B TYPICAL APPLICATION CIRCUIT RSENSE CE PWM When obtaining VDD from a source other than VouT SD VIN Nch Power MOS FET RB CB Insert RB and CB when using a bipolar please insert a capacitor CDD between the VDD pin and NPN Transistor the GND pin in order to provide stable operations Please place CL and as close as to the Vour and VDD pins respectively and also close to the GND pin Strengthen the wiring sufficiently RSENSE should be removed and shorted when the CL capacitor except for ceramic or low ESR capacitor is used ENOTES USE lt XC9105 CE PWM PIN gt 6 23 VoD RM1 CE PWM SCE SPWM CONDITIONS ON Chip Disable OFF ON Duty 25 PWM PFM automatic switching OFF OFF PWM By using external signals the control of the XC9105 series can be alternated between PWM control and PWM PFM automatic switching control By inputting a voltage of more than 0 2 to the CE PWM pin PWM control can be selected On the other hand PWM PFM automatic swi
19. e voltage on the FB pin Operation is shut down when the ripple voltage is more than 250mV The operations of the IC can be returned to normal with a toggle of the CE pin or by turning the power supply back on BAPPLICATIONS MFEATURES Input Voltage Range 0 9 10V PDAs Supply Voltage Range 1 8V 10V G Cellular phones Output Voltage Range 1 5V 30V Set freely with the reference voltage 0 9V 2 2 096 and two resistors 100 180 300 500kHz 15 180 300kHz only for XC9103 04 05B type with current limiter more than 400mA VIN 1 8V VOUT 3 3V PWM XC9103 PWM PFM auto switching XC9104 PWM PFM manual switching XC9105 Palmtop computers QG Portable audio systems Oscillation Frequency Various multi function power supplies Output Current Controls High Efficiency Stand by Current Load Capacitors Current Limiter Function Packages Environmentally Friendly 85 TYP 15 1 0 MAX Low ESR capacitors compatible Operates when ripple voltage 250mV Also available without current limiter 100kHz and 500kHz types are available only without current limiter SOT 25 USP 6B EU RoHS Compliant Pb Free MTYPICAL APPLICATION CIRCUIT TYPICAL PERFORMANCE CHARACTERISTICS RSENSE 100mQ XC9105D093MR for Ceramic CL SD MA737 L 10uH VOUT 3 3V CL 20 uF when PWM PFM Automatic Swiching T lt 100 _1_ CFB 47pF VIN 0 9V VOUT 3 3V RFB1 7 2 S loUT 400mA
20. ent Temperature Ta C 20 Supply Current 1 vs Power Supply Voltage 21 Supply Current 2 vs Power Supply Voltage XC9105D093 095MR 300 500kHz XC9105D093 095MR 300 500kHz Ta 25 C Ta 25 C T E 8 8 a 5 5 gt a 8 a Supply Voltage Vop V Supply Voltage Vop V 18 23 XC9103 XC9104 XC9105 Series MTYPICAL PERFORMANCE CHARACTERISTICS Continued 22 Oscillation Frequency vs Power Supply Voltage 23 Maximum Duty Cycle vs Power Supply Voltage XC9105D093 095MR 300 500kHz XC9105D093 095MR 300 500kHz Oscillation Frequency Fosc kHz Maximum Duty Cycle PFMDTY 96 Supply Voltage Vop V Supply Voltage Vbb V 24 PFM Duty Ratio vs Power Supply Voltage XC9105D093 095MR 300 500kHz PFM Duty Rate PFMDTY 96 Supply Voltage Vbb V TOIREX 19 23 XC9103 XC9104 XC9105 series PACKAGING INFORMATION 9501 25 Unit mm 29 02 USP 6B Unit mm 1 8 0 05 1 6 0 05 20 23 XC9103 XC9104 XC9105 Series E PACKAGING INFORMATION Continued USP 6B Reference Pattern Layout USP 6B Reference Metal Mask Design TOIREX 21 23 XC9103 XC9104 XC9105 series E MARKING RULE SOT 25 SOT 25 TOP VIEW USP 6B TOP VIEW D represents product series MARK PRODUCT SERIES XC9103x09xMx XC9104x09xMx XC9105x09xMx 2 represents current limit function MARK FUNCTIONS
21. ft Start Time vs Power Supply Voltage 13 CE H L Voltage vs Power Supply Voltage XC9105D092MR 180kHz XC9105D092MR 180kHz NI E 5 E 2 Ta 25 C t 5 z Supply Voltage Vop V Supply 14 PWM L Voltage vs Power Supply Voltage 15 EXT H On Resistance vs Power Supply Voltage XC9105D092MR 180kHz XC9105D092MR 180kHz 5 amp x gt 5 2 7 E z z X z b 8 0 Supply Voltage VDD V Supply Voltage Vbb V TOIREX 17 23 XC9103 XC9104 XC9105 series MTYPICAL PERFORMANCE CHARACTERISTICS Continued 16 EXT L On Resistance vs Power Supply Voltage 17 Operation Start Voltage vs Ambient Temperature XC9105D092MR 180kHz XC9105D092MR 180kHz 3 3V L 22 H CDRH5D28 C 20 F ceramic SD MA2Q737 Tr 2SD1628G EXT L ON Resistance RExrL Operation Start Voltage Vsr1 V 40 20 0 20 40 60 80 100 Supply Voltage Vop V Ambient Temperature Ta C 18 Operation Hold Voltage vs Ambient Temperature 19 Oscillation Start Voltage vs Ambient Temperature XC9105D092MR 180kHz 3 3V XC9105D092MR 180kHz 3 3V L 22 5028 C 20 F ceramic SD MA2Q737 Tr 2SD1628G S S 10 gt 08 5 5 e 0 6 5 5 5 S 04 X a i o lour 1mA E s 5 5 8 00 40 20 0 20 40 60 80 100 40 20 0 20 40 60 80 100 Ambient Temperature Ta Ambi
22. or amps the operation maintains a balance between the two inputs of the error amps and controls the EXT pin s ON time so that it doesn t increase more than is necessary Enable Function This function controls the operation and shutdown of the IC When the voltage of the CE pin is 0 2V or less the mode will be disable the channel s operations will stop and the EXT1 pin will be kept at a low level the external N type MOSFET will be OFF When the IC is in a state of disable current consumption will be no more than 1 0 WA When the CE pin s voltage is 0 65V or more the mode will be enabled and operations will recommence TOIREX 7 23 XC9103 XC9104 XC9105 series OPERATIONAL EXPLANATION Continued lt Output Voltage Setting Output voltage can be set by adding external split resistors Output voltage is determined by the following equation based on the values of RFB1 and 2 The sum of RrFB1 and RFB2 should normally be 2 M Qor less VouT 0 9 x RFB1 RFB2 RFB2 The value of CrB1 speed up capacitor for phase compensation should result in fzfb 1 2 x x CFB x RFB1 equal to 5 to 30kHz Adjustments are required depending on the application value of inductance L and value of load capacity CL fzfb 30kHz L 10 H Example of Equation fzfb 20kHz L 22 H 1 120kQ RFB2 45kQ fzfb 10kHz L 47 CFB 47pF 2 L 10 u H 68pF 20kHz 22 u H 130pF fzfb 1
23. sentatives before use to confirm that the information in this datasheet is up to date We assume no responsibility for any infringement of patents patent rights or other rights arising from the use of any information and circuitry in this datasheet Please ensure suitable shipping controls including fail safe designs and aging protection are in force for equipment employing products listed in this datasheet The products in this datasheet are not developed designed or approved for use with such equipment whose failure of malfunction can be reasonably expected to directly endanger the life of or cause significant injury to the user e g Atomic energy aerospace transport combustion and associated safety equipment thereof Please use the products listed in this datasheet within the specified ranges Should you wish to use the products under conditions exceeding the specifications please consult us or our representatives We assume no responsibility for damage or loss due to abnormal use All rights reserved No part of this datasheet may be copied or reproduced without the prior permission of TOREX SEMICONDUCTOR LTD TOREX SEMICONDUCTOR LTD TOIREX 23 23
24. tching control can be selected by inputting a voltage of less than 1 0V With the XC9105 by connecting resistors of the same value RM1 RM2 as shown in the diagram to the left it is possible to obtain chip disable with Sce ON and SPwM ON or OFF PWM PFM auto switching at 25 with ScE OFF amp SPwM ON amp PFM control with both switches OFF Note When operating at 1 8V and below stepping up from VIN 0 9V it is necessary to pull up to VDD in order to allow the CE PWM pin reach the VCEH voltage level Please make sure that the IC is in PWM control SPwM OFF when operations start If SPwM is ON there are times when chip enable might not operate Please select your external components carefully XC9103 XC9104 XC9105 Series OPERATIONAL EXPLANATION The XC9103 04 05 series are step up DC DC converter controller ICs with built in high speed low ON resistance drivers Error Amp Error amplifier is designed to monitor the output voltage comparing the feedback voltage FB with the reference voltage Vref In response to feedback of a voltage lower than the reference voltage Vref the output voltage of the error amp decreases OSC Generator This circuit generates the internal reference clock Ramp Wave Generator The ramp wave generator generates a saw tooth waveform based on outputs from the OSC Generator PWM Comparator gt The PWM comparator compares outputs from the error amp

TOREX XC9103/XC9104/XC9105 Series Step-up DC/DC Controllers Manual

Contents

Download Pdf Manuals

Related Search

Related Contents