Advanced Power Electronics Corp. APE1920 680K/1.2MHz, HIGH VOLTAGE, BOOST CONVERTER FEATURES DESCRIPTION The APE1920 is a high performance, high efficiency step up DC-DC Converter with integrated 3A. The APE1920 converter input voltage ranging from 2.6 to 5.5V. The Output voltage can be set up to 27V. The selectable frequency of 680 kHz and 1.2 MHz allows the use of small external inductors and capacitors and provides fast transient response. Current mode control with external compensation network makes it easy to stabilize the system and keep maximum flexibility. Programmable soft start function minimizes impact on the input power system. Internal power MOSFET with very low RDS (ON) provides high efficiency. The APE1920 automatically transits from PWM to PFM during light load condition further increasing efficiency. The converter also provides protection functions such as Current Limit and Thermal shutdown. The APE1920 is available in space-saving MESOP-10, MESOP-8, TDFN 3x3-10L and ESOP-8 packages. Operating Voltage from 2.6V to 5.5V Adjustable Output Voltage Range up to 27V Up to 3A Output Switch Current 680K/1.2MHz Selectable Switching Frequency Programmable Soft-start Function External Compensation Network Current Limit and Thermal Shutdown Protection Under Voltage Lockout < 1µA Shutdown Current Available in the Pb-Free MESOP-10, MESOP-8, TDFN 3x3-10L and ESOP-8 Packages TYPICAL APPLICATION 1.FREQ=High (Frequency=1.2MHz) (MESOP-10 and TDFN 3x3-10L) VIN=5V 4.7uH R3 4.7~100 C2 2*10uF C5 0.1uF 1nF C1 VCC FREQ LX LX EN FB R4 C3 B340A U1 1M C7 100pF SS C6 220pF PGND SGND COMP R6 100K VOUT=12V D1 L1 R2 130K C3 R8 15K 3*10uF APE1920 10nF R2 VOUT = 1.238V X (1 + ------- ) R8 R8 Suggest 10K~30K VIN < 4.5V, R3=10Ω VIN > 4.5V, R3= 100Ω Data and specifications subject to change without notice 1 201203271 Advanced Power Electronics Corp. APE1920 TYPICAL APPLICATION (2) FREQ=Low (Frequency=680KHz) (MESOP-10 and TDFN 3x3-10L) VIN=5V D1 B340A L1 6.8uH R3 4.7~100 2*10uF C3 1M C5 R7 10K 1nF 0.1uF R2 130K 220pF C1 U1 VCC R4 C2 VOUT=12V R6 56K EN LX LX FREQ FB COMP PGND SGND SS C6 C7 C3 R8 15K 3*10uF APE1920 10nF 150pF R2 VOUT = 1.238V X (1 + ------- ) R8 R8 Suggest 10K~30K VIN < 4.5V, R3= 10Ω VIN > 4.5V, R3=100Ω (3) FREQ=High (Frequency=1.2MHz) (ESOP-8/MESOP-8) VIN=5V 4.7uH R3 4.7~100 C2 2*10uF R4 EN 1M C4 C8 0.1uF 1nF B340A R2 C1 130K U1 VCC FREQ R6 100K COMP APE1920 C7 100pF VOUT=12V D1 L1 220pF LX FB C3 GND R8 15K SS 3*10uF C6 10nF R2 VOUT = 1.238V X (1 + ------- ) R8 R8 Suggest 10K~30K VIN < 4.5V, R3=10Ω VIN > 4.5V, R3=100Ω 2 Advanced Power Electronics Corp. APE1920 TYPICAL APPLICATION (4) FREQ=Low (Frequency=680KHz) (ESOP-8/MESOP-8) VIN=5V D1 B340A L1 VOUT=12V 6.8uH R3 4.7~100 VCC FREQ C2 2*10uF C4 0.1uF R2 130K 220pF C1 U1 R4 EN 1M C8 R7 10K 1nF R6 100K LX FB C3 GND COMP APE1920 R8 15K SS 3*10uF C6 10nF C7 100pF R2 VOUT = 1.238V X (1 + ------- ) R8 R8 Suggest 10K~30K VIN < 4.5V, R3=10Ω VIN > 4.5V, R3= 100Ω ORDERING / PACKAGE INFORMATION APE1920X COMP 1 FB 2 Package Type MP : ESOP-8 MM8 : MESOP-8 MM10 : MESOP-10 TGN3 : TDFN 3x3-10L 3 EN SGND 4 (SGND) SS 9 FREQ VCC 7 LX 6 LX 8 TDFN 3x3-10L TOP View ( Top View ) SS COMP 1 10 FB 2 9 FREQ EN 3 8 VCC SGND 4 7 LX PGND 5 6 LX MESOP-10 Exposed Pad PGND 5 ( Top view ) Exposed Pad (SGND) 10 COMP 1 FB 2 EN 3 GND 4 Exposed Pad (GND) 8 SS 7 FREQ 6 VCC 5 LX MESOP-8 / ESOP-8 3 Advanced Power Electronics Corp. APE1920 ABSOLUTE MAXIMUM RATINGS (at TA=25°C) VCC Pin Voltage (VCC) ------------------------------------- GND - 0.3 to GND + 6V EN, FREQ,COMP,FB,SS, Pin Voltage ---------------- GND - 0.3 to VCC + 0.3V LX Pin Voltage(VLX) --------------------------------------- 30V Power Dissipation(PD) ------------------------------------- ( TJ-TA ) / RthjamW Storage Temperature Range(TST) --------------------- -65°C To 150°C Operating Junction Temperature Range(TOP) ------ -40 to +125 C o Thermal Resistance from Junction to Case o ESOP-8 15 C/W MESOP-8 30 C/W MESOP-10 30oC/W 20oC/W TDFN 3x3-10L Thermal Resistance from Junction to Ambient ESOP-8 o 40oC/W MESOP-8 o 80 C/W MESOP-10 80oC/W TDFN 3x3-10L 55oC/W 2 Note: Rthja is measured with the PCB copper area of approximately 1.5 in (Multi-layer). That copper area needs connect to exposed pad. ELECTRICAL SPECIFICATIONS (VIN=5V, VOUT=12V, VEN=VIN, TA=25oC, unless otherwise noted) Parameter Input Voltage Range SYM VCC Under Voltage Lockout UVLO TEST CONDITION Rising UVLO Hysteresis MIN 2.6 TYP - MAX 5.5 UNITS - 2.35 2.6 V - -150 - mV V Step-Up Voltage Adjust Range VOUT VCC+0.5 - 27 V Operating Quiescent Current ICCQ IOUT= 0mA, VFB=1.5V - 150 250 μA Shutdown Current ISD VEN=0V - 0.1 1 μA Feedback Voltage VFB FB Input Leakage Current IFB-LKG VFB = 1.5V 1.219 1.238 1.257 V -100 0.01 nA 100 Line Regulation VIN=2.6 to 5.5V, IOUT=20mA - 0.2 - % Load Regulation VIN=5V, IOUT= 1mA to 0.7A - 0.3 - % FREQ=High 900 1200 1500 FREQ=Low 500 680 850 Oscillator Frequency FOSC FREQ High-level Input Voltage VFQ-IH 2 - - FREQ Low-level Input Voltage VFQ-IL - - 0.5 FREQ Input Leakage Current IFQ-LKG FREQ=GND - - 0.1 uA 4 7 13 μA Duty=40% 3 3.8 4.5 A Soft Start Current ISS N-channel MOSFET Current Llimit ILIM KHz V 4 Advanced Power Electronics Corp. APE1920 ELECTRICAL SPECIFICATIONS(Cont.) Parameter MOSFET On-resistance SYM TEST CONDITION VIN=3V, ISW=2A RDS(on) (Note1) MIN - TYP 200 MAX 280 - 160 220 VIN=5V, ISW=2A UNITS mΩ EN High-level Input Voltage VIH 1 - - V EN Low-level Input Voltage VIL - - 0.4 V EN Hysteresis hys - 200 - mV - 0.01 0.1 μA 85 90 - % - - 10 µA VEN=GND or VIN IEN-LKG EN Input Leakage Current Maximum Duty Cycle VFB=0V LX Leakage Current Duty ILXL Thermal Shutdown TDS - 150 - Thermal Shutdown Hysteresis TSH - 35 - VLX = 25V, VFB=1.5V o C Note：Guaranteed by design. PIN DESCRIPTIONS PIN SYMBOL EN PIN DESCRIPTION Enable Pin COMP Compensation Pin FB Feedback Pin SS Soft start Pin. Connect a capacitor to GND LX VCC Power Input Pin GND Ground Pin Switch Pin. SGND Signal Ground PGND Power Ground Frequency select pin. The power switch operates at 680kHz if FREQ is connected FREQ to GND and at 1.2MHz if FREQ is connected to VCC BLOCK DIAGRAM VCC 7uA SS Soft Start 1.238V Reference EN LX Summing Comparator Control and Driver Logic COMP SGND Enable/ Disable Error Amplifier FB FREQ Thermal Shutdown N-MOS Oscillator Slope Compensation Current Sense PGND 5 Advanced Power Electronics Corp. APE1920 COMPENSATION TABLE Fre que ncy(Hz) L1 (H) 680K(FREQ=Low ) 1.2M(FREQ=High) VIN (V) VOUT (V) R6 (Ω ) C7 (F) 2.5~4.4 5 10K 1.2n 2.5~5.5 7 15K 470p 2.5~5.5 9 27K 270p 2.5~5.5 12 56K 150p 2.5~5.5 15 150K 120p 2.5~5.5 18 110K 100p 2.5~5.5 21 150K 82p 2.5~5.5 24 100K 47p 2.5~4.0 5 33K 1n 2.5~5.5 7 39K 390p 2.5~5.5 9 39K 220p 2.5~5.5 12 100K 100p 2.5~5.5 15 130K 68p 2.5~5.5 18 150K 56p 2.5~5.5 21 220K 47p 2.5~5.5 24 390K 39p 6.8u 4.7u APPLICATION INFORMATION Setting the Output Voltage Application circuit item shows the basic application circuit with APE1920 adjustable output version. The external resistor sets the output voltage according to the following equation: V OUT R2 ⎞ ⎛ = 1.238V × ⎜1 + ⎟ R8 ⎠ ⎝ For most applications, R8 is a suggested a value by 10~30KΩ. Place the resistor-divider as close to the IC as possible to reduce the noise sensitivity. Soft Start Capacitor The soft-start function begins from SS pin Voltage=0V to VCC with a 7uA (typ.) constant current charging to the soft-start capacitor, so the capacitor should be large enough to let the output voltage reach regulation inside the soft-start cycle. Typical value of soft-start capacitor range is from 4.7nF to 100nF. After the cycle finished, the load can start to draw maximum current as required. Frequency Select Pin (FREQ) The frequency select pin FREQ allows to set the switching frequency of the device to 680 KHz (FREQ = low) or 1.2 MHz (FREQ = high). Higher switching frequency improves load transient response but reduces slightly the efficiency. The other benefits of higher switching frequency are a lower output ripple voltage. Usually, it is recommended to use 1.2 MHz switching frequency unless light load efficiency is a major concern. 6 Advanced Power Electronics Corp. APE1920 APPLICATION INFORMATION Under Voltage Lockout (UVLO) To avoid mis-operation of the device at low input voltages an under voltage lockout is included that disables the device, if the input voltage falls below (2.35V-150mV). Input Capacitor Selection For better input bypassing, low-ESR ceramic capacitors are recommended for performance. Two parallel 10uF (or one 22uF) input capacitor is sufficient for most applications. For a lower output power requirement application, this value can be decreased. Output Capacitor Selection For lower output voltage ripple, low-ESR output capacitor like ceramic capacitor is recommended. Three parallel 10uF ceramic capacitors work for most of the applications. Higher capacitor values can be used to improve the load transient response and reduce output ripple. Layout Guide (1) MESOP-10/TDFN 3x3-10L Frequency Selection, if FREQ connect to VCC, the frequency is 1.2MHz, else connect R7 to GND, the frequency is 680KHz. C7 R6 R2 and C8 should be connected to FB pin by short trace. R4 C5 GND C2 must be placed between VIN and PGND as closer as possible, VIN trace should be wide and short. The PGND trace can not directly connect to SGND, the trace take a via to ground area of bottom. C6 R8 R2 COMP 1 FB 2 EN 3 SGND 4 PGND 5 VCC C2 R3 VIN Expose Pad 10 SS 9 FREQ 8 VCC 7 LX 6 LX GND R7 C3 VOUT APE1920MM10/APE1920TGN3 D1 C4 C1 L1 C4 must be placed between VCC pin and SGND as closer as possible. The SGND must connect to exposed pad directly. LX should connected to lnductor by wide and short trace, keep sensitive components away from this trace. 7 Advanced Power Electronics Corp. APE1920 Layout Guide (2) MESOP-8/ESOP-8 Frequency Selection, if FREQ connect to VCC, the frequency is 1.2MHz, else connect R7 to GND, the frequency is 680KHz. C7 C6 VOUT R6 R2 R8 SS COMP R2 and C8 should be connected to FB pin by short trace. FB R4 VCC GND C3 must be placed between VOUT trace and GND pin as closer as possible. Exposed Pad EN R7 FREQ C2 VCC C5 R3 LX GND GND VIN APE1920MP / APE1920MM8 C3 VCC C1 L1 C4 VOUT D1 C4 must be placed between VCC pin and GND pin as closer as possible. The GND must connect to exposed pad directly. LX should connected to lnductor by wide and short trace, keep sensitive components away from this trace. 8 Advanced Power Electronics Corp. APE1920 TYPICAL PERFORMANCE CHARACTERISTICS 9 Advanced Power Electronics Corp. APE1920 TYPICAL PERFORMANCE CHARACTERISTICS 10 Advanced Power Electronics Corp. APE1920 TYPICAL PERFORMANCE CHARACTERISTICS 11 Advanced Power Electronics Corp. APE1920 MARKING INFORMATION ESOP-8 Part Number Package Code 1920MP YWWSSS Date Code (YWWSSS) Y：Last Digit Of The Year WW：Week SSS：Sequence MESOP-8 Part Number Package Code 1920MM YWWSSS Date Code (YWWSSS) Y：Last Digit Of The Year WW：Week SSS：Sequence MESOP-10 Part Number Package Code 1920MM YWWSSS Date Code (YWWSSS) Y：Last Digit Of The Year WW：Week SSS：Sequence TDFN 3x3-10L Part Number 1920 YWWS Date Code (YWWS) Y:Year WW：Week S：Sequence 12 Advanced Power Electronics Corp. APE1920 PACKAGE OUTLINES MESOP-10 D1 6 10 1 5 E2 E E1 "A" 5 1 10 e b 6 THERMALLY ENHANCED VARIATIONS ONLY D 0.25 H A2 A C 0.05 A1 Dimensions in Millimeters Min. Nom. Max. A 1.1 A1 0 0.08 0.15 A2 0.75 0.85 0.95 C 0.08 0.15 0.23 D 2.9 3 3.1 D1 0.75 1.63 2.5 E 4.8 4.9 5 E1 2.9 3 3.1 E2 0.75 1.63 2.5 L 0.4 0.6 0.8 b 0.22 0.3 0.38 e 0.50 BSC y 0.1 θ 0O 8O JEDEC outline: MO-187 BA-T Symbol L1 L GAUGE PLANE SEATING PLANE θ DETAIL A Dimensions in Inches Min. Nom. Max. 0.043 0 0.003 0.006 0.03 0.034 0.038 0.003 0.006 0.009 0.114 0.118 0.122 0.03 0.064 0.098 0.189 0.193 0.197 0.114 0.118 0.122 0.03 0.064 0.098 0.016 0.024 0.031 0.009 0.012 0.015 0.020 BSC 0.004 0O 8O Advanced Power Electronics Corp. APE1920 MESOP-8 D1 E2 Expose Pad E 5 E1 8 L DETAIL A 4 1 b D e y A1 C A A2 7 (4X) Dimensions in Millimeters Min. Nom. Max. A 1.1 A1 0 0.08 0.15 A2 0.75 0.85 0.95 C 0.08 0.15 0.23 D 2.9 3 3.1 D1 0.75 1.63 2.5 E 4.8 4.9 5 E1 2.9 3 3.1 E2 0.75 1.63 2.5 L 0.4 0.6 0.8 b 0.22 0.3 0.38 e 0.65 BSC y 0.1 θ 0O 8O JEDEC outline: MO-187 AA-T Symbol DETAIL A Dimensions in Inches Min. Nom. Max. 0.043 0 0.003 0.006 0.03 0.034 0.038 0.003 0.006 0.009 0.114 0.118 0.122 0.03 0.064 0.098 0.189 0.193 0.197 0.114 0.118 0.122 0.03 0.064 0.098 0.016 0.024 0.031 0.009 0.012 0.015 0.026 BSC 0.004 0O 8O Advanced Power Electronics Corp. APE1920 ESOP-8 H E Expose Pad Y X θ L DETAIL A b D e y A1 C A A2 7 (4X) Dimensions in Millimeters Min. Nom. Max. A 1.75 A1 0 0.15 A2 1.25 C 0.1 0.2 0.25 D 4.7 4.9 5.1 E 3.7 3.9 4.1 H 5.8 6 6.2 L 0.4 1.27 b 0.31 0.41 0.51 e 1.27 BSC y 0.1 X 2.34 Y 2.34 θ 0O 8O Mold flash shall not exceed 0.25mm per side JEDEC outline: MS-012 BA Symbol DETAIL A Dimensions in Inches Min. Nom. Max. 0.069 0 0.06 0.049 0.0075 0.008 0.01 0.185 0.193 0.2 0.146 0.154 0.161 0.228 0.236 0.244 0.015 0.05 0.012 0.016 0.02 0.050 BSC 0.004 0.092 0.092 0O 8O Advanced Power Electronics Corp. APE1920 TDFN 3x3-10L D D2 L E2 E Pin1 e (Top View) b (Bottom View) A A3 A1 SEATING PLANE (SIDE View) Symbol A A1 A3 b D D2 E E2 e L Dimensions in Millimeters Min. Nom. Max. 0.70 0.75 0.80 0.00 0.02 0.05 0.20 REF. 0.18 0.25 0.30 2.90 3.00 3.10 2.20 2.40 2.50 2.90 3.00 3.10 1.50 1.60 1.70 0.50 BSC. 0.30 0.40 0.50 Dimensions in Inches Min. Nom. Max. 0.028 0.030 0.031 0.000 0.001 0.002 0.008 REF. 0.007 0.010 0.012 0.114 0.118 0.122 0.087 0.094 0.098 0.114 0.118 0.122 0.059 0.063 0.070 0.020 BSC. 0.012 0.016 0.020