BP5220 / BP5221 / BP5222 / BP5220X / BP5221X / BP5222X Power Module DC / DC converter BP5220 / BP5221 / BP5222 / BP5220X / BP5221X / BP5222X The BP5220, BP5221, BP5222, BP5220X, BP5221X, and BP5222X are DC / DC converters that use a pulse width modulation (PWM) system. They contain control circuits, switching devices, rectifiers, and coils, and operate by only connecting an I / O smoothing capacitor. With a high efficiency of power conversion, the modules are available in standalone 9-pin SIP packages with no heat sink required. They can be applied to various purposes by fine-adjusting the output voltage and switching on and off. With a wide range of input voltage, the modules are best suited for obtaining a stable local power supply from a main power supply with a large voltage variation. !Applications Power supplies for copiers, personal computers, facsimiles, AV equipment, measuring instruments, vending machines, security device, registers, industrial equipment, and maintenance tools !Features 1) Wide range of input voltage. 2) High power conversion efficiency. 3) Built-in output ON / OFF switch. 4) Applicable to various purposes by fine-adjusting the output voltage. 5) Small number of external components required. 6) Heat sink unnecessary. 7) Compact SIP 9-pin package. BP5220 / BP5221 / BP5222 : SIP BP5220X / BP5221X / BP5222X : SIP (L-shaped lead type) !List of the series BP5220 / BP5220X BP5221 / BP5221X BP5222 / BP5222X Input voltage 8~38 8~38 Unit 15~38 V Output voltage 5 5 12 V Output current 1 0.5 0.5 A 85 (VIN=15V) 84 (VIN=15V) 90 (VIN=20V) % Power conversion effciency BP5220 / BP5221 / BP5222 / BP5220X / BP5221X / BP5222X Power Module !Absolute maximum ratings (Ta=25°C) Parameter Limits Symbol Unit BP5220 / BP5220X BP5221 / BP5221X BP5222 / BP5222X 8~38 15~38 0.5 0.5 Input voltage VIN 8~38 Output current IO 1 V A Operating temperature range Topr −20~+70 ˚C Storage temperature range Tstg −25~+80 ˚C !Block diagram BP5220 / BP5221 / BP5222 DRIVE CIRCUIT POWER SUPPLY CIRCUIT CONTROL CIRCUIT N. C. N. C. 9 7 6 5 4 3 2 1 VIN N. C. ADJ N. C. CTL GND VOUT FB BP5220 / BP5221 / BP5222 / BP5220X / BP5221X / BP5222X Power Module !Electrical characteristics BP5220 / BP5220X (Unless otherwise noted: VlN=15V, IO=0.5A, SW=1, Ta=25°C) Symbol Min. Typ. Max. Unit Input voltage Parameter VIN 8 - 38 V Output voltage VO 4.75 5 5.25 V Output current IO - - 1 A Line regulation ∆VO1 - 35 80 mV VlN=8V~38V Load regulation ∆VO2 - 20 80 mV IO=0.1A~1A υr - 30 70 mVPP η 75 85 - % fSW - 190 - kHz Output ripple voltage Power conversion efficiency Switching frequency Conditions ∗1 VlN=<30V ∗2 IO=1A CTL pin ON resistance RON - - 4.7 kΩ VO>4.75V CTL pin OFF resistance ROFF 200 - - kΩ VO<0.1V, SW=2 select ∗1 Derating required according to the input voltage and ambient temperature. ∗2 Pulse noise not included. BP5221 / BP5221X (Unless otherwise noted: VlN=15V, IO=0.25A, SW=1, Ta=25°C) Parameter Symbol Min. Typ. Max. Unit Conditions Input voltage VIN 8 - 38 V Output voltage VO 4.75 5 5.25 V Output current IO - - 0.5 A Line regulation ∆VO1 - 35 80 mV VlN=8V~38V Load regulation ∆VO2 - 20 80 mV IO=0.05A~0.5A Output ripple voltage υr - 30 70 mVPP Power conversion efficiency η 70 84 - % Switching frequency fSW - 190 - kHz CTL pin ON resistance RON - - 4.7 kΩ VO>4.75V CTL pin OFF resistance ROFF 200 - - kΩ VO<0.1V, SW=2 select ∗1 ∗2 IO=0.5A ∗1 Derating required according to the input voltage and ambient temperature. ∗2 Pulse noise not included. BP5222 / BP5222X (Unless otherwise noted: VlN=20V, IO=0.25A, SW=1, Ta=25°C) Symbol Min. Typ. Max. Unit Input voltage Parameter VIN 15 - 38 V V Conditions Output voltage VO 11.2 12 12.8 Output current IO - - 0.5 A Line regulation ∆VO1 - 22 80 mV VlN=15V~38V Load regulation ∆VO2 - 45 80 mV IO=0.05A~0.5A υr - 35 70 mVPP η 75 90 - % fSW - 190 - kHz Output ripple voltage Power conversion efficiency Switching frequency ∗1 ∗2 IO=0.5A ∗2 CTL pin ON resistance RON - - 4.7 kΩ VO>11.2V CTL pin OFF resistance ROFF 200 - - kΩ VO<0.1V, SW=2 select ∗1 Derating required according to the input voltage and ambient temperature. ∗2 Pulse noise not included. BP5220 / BP5221 / BP5222 / BP5220X / BP5221X / BP5222X Power Module !Measurement circuit BP5220 / BP5221 / BP5222 BP5220X / BP5221X / BP5222X 9 Input 7 6 5 4 3 2 1 A A Outrput 0.47µF 470µF / 50V 2 200k 1 4.7k V + 100µF / 50V SW + V f f ; Frequency counter 100µF/50V, 470µF/50V ; Low-impedance type Fig.1 T Switching frequency=1/T Output ripple voltage Note that output ripple voltage depends on the type and characteristics of the output capacitor !Circuit operation (1) The basic application examples are shown in Fig.2. The externally installed parts are only the input and output smoothing capacitors. BP5220 / BP5221 / BP5222 BP5220X / BP5221X / BP5222X VIN (2) Switching on and off the output voltage is allowed. The output can be switched off by making pin 4 to be low or open (high impedance). 9 7 6 5 4 3 2 1 VO + + 100µF 470µF Fig.2 (3) Fine adjustment of the output voltage is allowed. The fine adjustment of output voltage can be performed from pin 6 via the resistor by connecting the output terminal (pin 2) and GND. BP5220 / BP5221 / BP5222 BP5220X / BP5221X / BP5222X VIN 9 7 6 5 4 3 2 Output OFF 1 VO SW + + 100µF 470µF Fig.3 BP5220 / BP5221 / BP5222 / BP5220X / BP5221X / BP5222X Power Module !Application example Application example 1 : DC / DC converter with a protection circuit 6 BP5220 / BP5221 / BP5222 BP5220X / BP5221X / BP5222X 7 6 5 4 3 2 5 1 VO 5V 820Ω 1kΩ 0.22Ω + 100µF 2.2MΩ∗ OUTPUT VOLTAGE (V) 9 VIN 24V + 470µF 120pF 4 VIN=24V 3 2 + 1 COMP. 0 33kΩ 0.1µF − BA10393 0.2 0.4 0.6 0.8 1.0 1.2 OUTPUT CURRENT (A) Fig.5 Fig.4 ∗A resistor to secure the rise of output at power on. The resistance to be selected depends on the input voltage. This is a standard application. Because the control current fluctuates with variations in circuits and components, set the control current by adding a sufficient margin to the normal current level. Application example 2 : Output ON / OFF control BP5220 / BP5221 / BP5222 BP5220X / BP5221X / BP5222X 9 7 6 5 4 3 2 1 VIN VO + + 100µF 470µF ON / OFF 100kΩ 100kΩ 2SC1740 Fig.6 Application example 3 : Output voltage fine adjustment 1) When reducing the output voltage 2) When increasing the output voltage BP5220 / BP5221 / BP5222 BP5220X / BP5221X / BP5222X BP5220 / BP5221 / BP5222 BP5220X / BP5221X / BP5222X 9 7 6 5 4 3 2 9 1 VIN VO 100µF 470µF 6 5 100µF VR VR Fig.7 4 3 2 1 VO + + + 7 VIN Fig.8 + 470µF BP5220 / BP5221 / BP5222 / BP5220X / BP5221X / BP5222X Power Module VR value setting equations(The output voltage after adjustment is denoted Vo.) (1) When reducing the output voltage BP5220 / BP5221, BP5220X / BP5221X R = (Vo-1.281) / (0.0278-0.00556Vo) (kΩ) BP5222, BP5222X R = (Vo-1.281) / (0.1196-0.01Vo) (kΩ) (2) When increasing the output voltage BP5220 / BP5221, BP5220X / BP5221X R=11160 / (48.4Vo-242) (kΩ) BP5222, BP5222X R = 1200 / (9.368Vo-112) (kΩ) To make full use of the ability of the the module products, we recommended the output voltage be adjusted within ± 20% of the output voltage rating. When the output voltage is increased by 20%, for instance, the minimum input voltage is also increased by 20%. (Example : When the output voltage is changed from 5V to 6V in the BP5220, the minimum input voltage is changed from 8V to 9.6V) Application example 4 : Slow start The slow start circuit mitigates the pulse load on the internal switching transistor when input voltage is applied, and rises the output voltage gradually by starting the switching operation slowly. This application is useful for preventing the malfunction of an external protection circuit due to a rush current, and can serve as a countermeasure against the operation outside the safe operation range. BP5220 / BP5221 / BP5222 BP5220X / BP5221X / BP5222X 9 VIN 24V 7 6 5 4 3 2 1 VO + + 100µF 470µF 470kΩ 100kΩ 2SC1740R + C1 10µF Fig.9 C1 is a slow-start capacitor for mitigating the over rush current that flows into the modules when the switch is turned on. !Operation notes (1) The output current should be reduced according to an increase in the input voltage or ambient temperature. Use the modules within the derating curve range. (2) Pins 5 and 7 are no connected. (3) No circuit is installed in the modules to protect against over output currents. Take physical safety measures such as fusing if short-circuit loading is probable. (4) A large rush current may flow in the module when the input voltage is applied or the output ON / OFF is controlled with pin 4 without a capacitor such as C1 in application 4. Operating within the safe operation ranges shown in Figs.12, 15, and 18. The safe operation range is determined by the safe operation range of the internal switching transistor. The amount of rush current depends on the output impedance of the input power supply and capacitors connected to the module outputs. The pulse load on the internal switching transistor at the start of operation can be reduced by using the protection circuit of application 1 or the slow start circuit of application 4. BP5220 / BP5221 / BP5222 / BP5220X / BP5221X / BP5222X Power Module !Electrical characteristic curves BP5220 / BP5220X 100 1200 20 VIN=34V VIN=25V 800 VIN=30V VIN=38V 600 400 VIN=38V 60 40 20 200 0 VIN=23V 80 VIN=8~15V EFFICIENCY : η (%) OUTPUT CURRENT : IO (mA) 1000 CURRENT FLOWING INTO PIN9 (A) VIN=8V 25 50 70 100 0 120 200 400 600 800 5 3 2 0.5 0.3 Tc=25˚C SINGLE PULSE 0.2 0.1 1 1000 2 3 5 10 20 30 50 VOLTAGE BETWEEN PIN2 AND PIN9 (V) Fig.11 Efficiency Fig.10 Derating curve Pw=1ms 1 OUTPUT CURRENT : IO (A) AMBIENT TEMPERATURE : Ta (˚C) Pw=0.2ms 10 Fig.12 Safety operation range BP5221 / BP5221X VIN=8~20V EFFICIENCY : η (%) OUTPUT CURRENT : IO (A) VIN=8V 0.5 VIN=30~38V 0.4 0.3 0.2 80 VIN=23V 60 VIN=38V 40 20 0.1 0 CURRENT FLOWING INTO PIN9 (A) 100 0.6 25 50 70 100 0 120 0.1 0.2 0.3 0.4 5 2 Pw=10ms 1 0.5 0.3 Tc=25˚C SINGLE PULSE 0.2 0.1 1 0.5 3 5 10 20 30 50 Fig.15 Safety operation range Fig.14 Efficiency Fig.13 Derating curve 2 VOLTAGE BETWEEN PIN2 AND PIN9 (V) OUTPUT CURRENT : IO (A) AMBIENT TEMPERATURE : Ta (˚C) Pw=1ms 3 BP5222 / BP5222X 0.6 CURRENT FLOWING INTO PIN9 (A) 100 VIN=15~20V 80 VIN=30V 0.4 EFFICIENCY : η (%) OUTPUT CURRENT : IO (A) VIN=23V 0.5 VIN=38V 0.3 0.2 VIN=30V 60 40 20 0.1 0 VIN=38V 25 50 70 100 AMBIENT TEMPERATURE : Ta (˚C) Fig.16 Derating curve 120 0 0.1 0.2 0.3 0.4 OUTPUT CURRENT : IO (A) Fig.17 Efficiency 0.5 5 Pw=1ms 3 2 Pw=10ms 1 0.5 0.3 Tc=25˚C SINGLE PULSE 0.2 0.1 1 2 3 5 10 20 30 50 VOLTAGE BETWEEN PIN2 AND PIN9 (V) Fig.18 Safety operation range BP5220 / BP5221 / BP5222 / BP5220X / BP5221X / BP5222X Power Module pin9 sink current BP5220 / BP5221 / BP5222 BP5220X / BP5221X / BP5222X 9 7 6 5 4 3 2 1 + + Voltage developed between pins 2 and 9 Fig.19 ASO measurement circuit !External dimensions (Units : mm) 2.54 9 0.5 1.4 Pin No. 4±1 1 2 3 4 5 6 7 0.5±0.1 4.0 Max. 2.54×8=20.32 8.0 Max. 1.1 +0.2 −0.1 9 Marked side 4.0 Max. p=2.54±0.2 2.54×8=20.32 SIP9 12.0 Max. 1pin SIDE MARK Marked side 1pin SIDE MARK 19.5 Max. Pin No. 1 2 3 4 5 6 7 28.0 Max. 12.0 Max. 21.5 Max. 28.0 Max. 7.0 +1.0 −0.5 SIP9 (L-shaped lead type) 8.0 Max.