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?2009-2013 cymbet corporation ? tel: +1-763-633-1780 ? www.cymbet.com ds-72-03 rev f page 1 of 16 enerchip cc with integrated power management enerchip? cc CBC3150 features ? power manager with charge control ? integrated 50ah thin film energy storage ? built-in energy storage protection ? temperature compensated charge control ? adjustable switchover voltage ? charges integrated enerchip over a wide supply range ? low standby power ? smt - solder refow tolerant ? thousands of recharge cycles ? low self-discharge ? eco-friendly, rohs compliant the enerchip cc is the worlds frst intelligent thin film energy storage device. it is an integrated solution that provides backup energy storage and power management for systems requiring power bridging and/or secondary power. the enerchip cc is essentially a ups in a chip? drop in solution. during normal operation, the enerchip cc charges itself with a controlled voltage using an internal charge pump that operates from 2.5v to 5.5v. an enable pin allows for activation and deactivation of the charge pump using an external control line in order to minimize current consumption and take advantage of the fast recharge time of the enerchip. when the primary power supply dips below a user- defned threshold voltage, the enerchip cc will signal this event and route the enerchip voltage to v out . the enerchip cc also has energy storage protection circuitry to enable thousands of recharge cycles. the CBC3150 is a 20-pin, 9 mm x 9 mm dual flat no- lead (dfn) package, available in tubes, trays, or tape- and-reel for use with automatic insertion equipment. 9 mm x 9 mm dfn smt package applications ? standby supply for non-volatile sram, real-time clocks, controllers, supply supervisors, and other system-critical components. ? wireless sensors and rfid tags and other powered, low duty cycle applications. ? localized power source to keep microcontrollers and other devices alert in standby mode. ? power bridging to provide back-up power to system during exchange of main batteries. ? consumer appliances that have real-time clocks; provides switchover power from main supply to integrated backup energy storage. ? business and industrial systems such as: network routers, point-of-sale terminals, single- board computers, test equipment, multi-function printers, industrial controllers, and utility meters. ? energy harvesting by coupling the enerchip with energy transducers such as solar panels. figure 1 - typical enerchip cc application circuit
?2009-2013 cymbet corporation ? tel: +1-763-633-1780 ? www.cymbet.com ds-72-03 rev f page 2 of 16 electrical properties enerchip backup output voltage: 3.3v energy capacity (typical): 50ah recharge time to 80%: 20 minutes charge/discharge cycles: >5000 to 10% discharge physical properties package size: 9 mm x 9 mm operating temperature: -20c to +70c storage temperature: -40c to +125c (before 1st charge) functional block diagram figure 2: enerchip cc CBC3150 internal block diagram the enerchip cc internal schematic is shown in figure 2. the input voltage from the power supply (v dd ) is applied to the charge pump, the control logic, and is compared to the user-set threshold as determined by the voltage on v mode . v mode is an analog input ranging from 0v to v dd . the enable pin is a digital input that turns off the charge pump when low. v out is either supplied from v dd or the integrated enerchip energy storage device. reset is a digital output that, when low, indicates v out is being sourced by the integrated enerchip. c fly is the fying capacitor in the voltage doubler circuit. the value of c fly can be changed if the output impedance of the enerchip cc needs to be modifed. the output impedance is dictated by , where is the frequency of oscillation (typically 100khz) and is the capacitor value (typically 0.1f). gnd is system ground. enerchip cc CBC3150
?2009-2013 cymbet corporation ? tel: +1-763-633-1780 ? www.cymbet.com ds-72-03 rev f page 3 of 16 pin number label description 1 v bat positive enerchip terminal - tie to pin 4 2 v out system voltage 3 v dd input voltage 4 v chg enerchip charge voltage - tie to pin 1 and/or optional enerchip(s) 5 enable charge pump enable 6 v mode mode select for backup switchover threshold 7 gnd system ground 8 reset reset signal (active low) 9 c p flying capacitor positive 10 c n flying capacitor negative 11 nc no connection 12 nc no connection 13 nc no connection 14 gnd system ground 15 nc no connection 16 nc no connection 17 nc no connection 18 nc no connection 19 nc no connection 20 nc no connection device input/ouput descriptions figure 3: enerchip cc CBC3150 package pin-out vchg enable reset cp cn nc nc nc nc nc nc gnd nc nc nc enerchip cc CBC3150
?2009-2013 cymbet corporation ? tel: +1-763-633-1780 ? www.cymbet.com ds-72-03 rev f page 4 of 16 absolute maximum ratings parameter condition min typical max units output voltage v out v dd > v th - v dd - v output voltage v out (backup mode) v dd < v th 2.2 3.3 3.6 v enerchip pulse discharge current - variable - see app. note 1025 - self-discharge (5-yr. average; 25c) non-recoverable - 2.5 - % per year recoverable - 1.5 (1) - % per year operating temperature - -40 (2) 25 +70 c storage temperature - -40 - +125 (3) c cell resistance (25c) charge cycle 2 - 500 1250 ? charge cycle 1000 - 2250 5000 recharge cycles (to 80% of rated ca - pacity; 4.1 v charge voltage) 25c 10% depth-of-discharge 5000 - - cycles 50% depth-of discharge 1000 - - cycles 40c 10% depth-of-discharge 2500 - - cycles 50% depth-of-discharge 500 - - cycles recharge time (to 80% of rated ca - pacity; 4.1v charge voltage; 25c) charge cycle 2 - 20 35 minutes charge cycle 1000 - 60 95 capacity 100a discharge; 25c 50 - - ah (1) first month recoverable self-discharge is 4% average. (2) cell resistance and charging time increase with decreasing temperature. (3) storage temperature is for enerchip cc device before 1st charge is applied. note: all specifcations contained within this document are subject to change without notice. parameter condition min typical max units v dd with respect to gnd 25c gnd - 0.3 - 6.0 v enable and v mode input voltage 25c gnd - 0.3 - v dd +0.3 v v bat (1) 25c 3.0 - 4.15 v v chg (1) 25c 3.0 - 4.15 v v out 25c gnd-0.3 - 6.0 v reset output voltage 25c gnd - 0.3 - v out +0.3 v cp, flying capacitor voltage 25c gnd - 0.3 - 6.0 v cn 25c gnd - 0.3 - v dd +0.3 v operating characteristics (1) no external connections to these pins are allowed, except parallel enerchips. enerchip cc CBC3150
?2009-2013 cymbet corporation ? tel: +1-763-633-1780 ? www.cymbet.com ds-72-03 rev f page 5 of 16 enerchip charging characteristics the enerchip can be recharged quickly. the following graphs illustrate the correlation between charging time and charging current into a discharged cell, and also the cumulative charge vs. charging time. both graphs are typical based on constant 4.1v charging at room temperature. charging time increases at lower temperature. enerchip temperature characteristics enerchip cell resistance increases (decreases) with decreasing (increasing) t emperature. the following graph represents typical cell resistance over the rated operating temperature range. enerchip cc CBC3150
?2009-2013 cymbet corporation ? tel: +1-763-633-1780 ? www.cymbet.com ds-72-03 rev f page 6 of 16 power supply current characteristics t a = -20 oc to +70oc characteristic symbol condition min max units quiescent current i q enable=gnd v dd =3.3v - 3.5 a v dd =5.5v - 6.0 a enable=v dd v dd =3.3v - 35 a v dd =5.5v - 38 a enerchip cutoff current i qbatoff v bat < v batco , v out =0 - 0.5 na i qbaton v bat > v batco , enable=v dd , i out =0 - 42 na interface logic signal characteristics v dd = 2.5v to 5.5v, t a = -20 oc to +70oc characteristic symbol condition min max units high level input voltage v ih - v dd - 0.5 - volts low level input voltage v il - - 0.5 volts high level output voltage v oh v dd >v th (see figures 4 and 5) i l =10a v dd - 0.04v (1) - volts low level output voltage v ol i l = -100a - 0.3 volts logic input leakage current i in 0CBC3150
?2009-2013 cymbet corporation ? tel: +1-763-633-1780 ? www.cymbet.com ds-72-03 rev f page 7 of 16 note: all specifcations contained within this document are subject to change without notice charge pump characteristics v dd = 2.5v to 5.5v, t a = -20 oc to +70oc characteristic symbol condition min max units enable=v dd to charge pump active t cpon enable to 3rd charge pump pulse, v dd =3.3v 60 80 s enable falling to charge pump inactive t cpoff - 0 1 s charge pump frequency f cp - 120 khz (1) charge pump resistance r cp delta v bat , for i bat charging current of 1a to 100a c fly =0.1f, c bat =1.0f 150 300 ? v chg output voltage v cp c fly =0.1f, c bat =1.0f, i out =1a, temp=+25oc 4.075 4.125 v v chg temp. coeffcient t ccp i out =1a, temp=+25oc -2.0 -2.4 mv/oc charge pump current drive i cp i bat =1ma c fly =0.1f, c bat =1.0f 1.0 - ma charge pump on voltage v enable enable=v dd 2.5 - v (1) f cp = 1/t cpper additional characteristics t a = -20 oc to +70oc characteristic symbol condition limits units min max v bat cutoff threshold v batco i out =1a 2.75 3.25 v cutoff temp. coeffcient t cco - +1 +2 mv/oc v bat cutoff delay time t cooff v bat from 40mv above to 20mv below v batco i out =1a 40 - ms v out dead time, v dd rising (2) t rsbr i out =1ma v bat =4.1v 0.2 2.0 s v out dead time, v dd falling (2) t rsbf v bat =4.1v 0.2 2.0 s bypass resistance r out - - 2.5 ? (2) dead time is the time period when the v out pin is foating. size the holding capacitor accordingly. enerchip cc CBC3150
?2009-2013 cymbet corporation ? tel: +1-763-633-1780 ? www.cymbet.com ds-72-03 rev f page 8 of 16 figure 4: enerchip cc switchover and disconnect timing diagrams important timing diagrams for the enerchip cc relationship between enerchip switchover timing and enerchip disconnect from load timing are shown in figure 4. v reset enerchip cc CBC3150
?2009-2013 cymbet corporation ? tel: +1-763-633-1780 ? www.cymbet.com ds-72-03 rev f page 9 of 16 timing diagrams for the enerchip cc relationship between v dd to reset and enable high to charge pump becoming active are shown in figure 5. figure 5: timing diagrams for v dd to reset and enable to charge pump active. enerchip cc CBC3150
?2009-2013 cymbet corporation ? tel: +1-763-633-1780 ? www.cymbet.com ds-72-03 rev f page 10 of 16 enerchip cc detailed description the enerchip cc uses a charge pump to generate the supply voltage for charging the integrated energy storage device. an internal fet switch with low rds on is used to route v dd to v out during normal operation when main power is above the switchover threshold voltage. when v dd is below the switchover threshold voltage, the fet switch is shut off and v out is supplied by the enerchip. an interrupt signal is asserted low prior to the switchover. operating modes the enerchip cc can be operated from various power supplies such as a primary source or a non-rechargeable battery. with the enable pin asserted high, the charge pump is active and charges the integrated enerchip. the enerchip cc will be 80% charged within 20 minutes. due to the rapid recharge it is recommended that, once the enerchip cc is fully charged, the user de-assert the enable pin (i.e., force low) to reduce power consumption. a signal generated from the mcu could be used to enable and disable the enerchip cc. when controlling the enable pin by way of an external controller - as opposed to fxing the enable line to vdd - ensure that the enable pin is forced low by the controller anytime the reset line is low, which occurs when the switchover threshold voltage is reached and the device is placed in backup mode. although the internal charge pump is designed to operate below the threshold switchover level when the enable line is active, it is recommended that the enable pin be forced low whenever reset is low to ensure no parasitic loads are placed on the enerchip while in this mode. if enable is high or foating while vdd is in an inde terminate state, bias currents within the enerchip cc could fow, placing a parasitic load on the enerchip that could dramatically reduce the effective backup operating time. the enerchip cc supports 2 operational modes as shown in figures 6 and 7. enerchip cc CBC3150
?2009-2013 cymbet corporation ? tel: +1-763-633-1780 ? www.cymbet.com ds-72-03 rev f page 11 of 16 figure 6: CBC3150 typical circuit for mode 1 operation figure 7: CBC3150 typical circuit for mode 2 operation mode 1 operation for use in 3.3 volt systems. the v mode pin should be tied directly to gnd, as shown in figure 6. this will set the switchover threshold at approximately 3.0 volts. mode 2 operation figure 7 shows the circuitry for user-selectable switchover threshold to a value between 2.5 and 5.0 volts. use figure 8 to determine the value of r1. to determine the amount of hysteresis from the enerchip switchover threshold, use figure 9. enerchip cc CBC3150
?2009-2013 cymbet corporation ? tel: +1-763-633-1780 ? www.cymbet.com ds-72-03 rev f page 12 of 16 to determine the backup switchover hysteresis for mode 2 operation, use figure 9. figure 8: mode 2 resistor selection graph figure 9: mode 2 hysteresis as a function of r2/r1 battery switchover threshold voltage vs. r2/r1 ratio 0 1 2 3 4 5 6 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 1.1 r2/r1 ratio switchover threshold voltage (volts) trip point hysteresis in battery switchover threshold voltage vs. r2/r1 ratio 0 0.01 0.02 0.03 0.04 0.05 0.06 0.07 0.08 0.09 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 1.1 r2/r1 ratio hysteresis (volts) hysteresis enerchip charging and backup power switchover threshold for 2.5 to 5.5 volt operation is selected by changing the value of r2 (see figure 7). to determine the backup switchover point, set the value of r1 to 200k ? and choose the value of r2 according to figure 8. for example, to set a 3.0v trip point: if r1=200 k ? then r2 = r1 x 0.72 = 144k ? . figure 7 shows a mode 2 circuit with standard value resistors of 200k ? and 143k ? . enerchip cc CBC3150
?2009-2013 cymbet corporation ? tel: +1-763-633-1780 ? www.cymbet.com ds-72-03 rev f page 13 of 16 adding power and energy capacity with parallel enerchips in some applications, additional energy storage capacity might be needed. the schematic in figure 11 shows how multiple enerchips can be supported in parallel by a single enerchip cc CBC3150. note that c fly should be increased by 0.1f for every additional enerchip. real-time clock application circuit the enerchip cc as depicted in figure 10 is a typical application circuit in a 3.3 volt system where backup and power switchover circuitry for a real-time clock device is provided. figure 10: enerchip cc providing real-time clock backup power figure 11: enerchip cc providing power management for multiple enerchips enerchip cc CBC3150
?2009-2013 cymbet corporation ? tel: +1-763-633-1780 ? www.cymbet.com ds-72-03 rev f page 14 of 16 enerchip cc CBC3150 pcb layout guidelines - important notice! there are several pcb layout considerations that must be taken into account when using the CBC3150: 1. all capacitors should be placed as close as possible to the enerchip cc. the fying capacitor connections must be as short as possible and routed on the same layer the enerchip cc is placed. 2. power connections should be routed on the layer the enerchip cc is placed. 3. a ground (gnd) plane in the pcb should be used for optimal performance of the enerchip cc. 4. very low parasitic leakage currents from the v bat pin to power, signal, and ground connections, can result in unexpected drain of charge from the integrated power source. maintain suffcient spacing of traces and vias from the v bat pin and any traces connected to the v bat pin in order to eliminate parasitic leakage currents that can arise from solder fux or contaminants on the pcb. 5. pin 1 v bat and pin 4 v chg must be tied together for proper operation. 6. there should be no traces, vias or connections under the CBC3150 exposed die pad. 7. when placing a silk screen on the pcb around the perimeter of the package, place the silk screen outside of the package and all metal pads. failure to observe this precaution can result in package cracking during solder refow due to the silk screen material interfering with the solder solidifcation process during cooling. 8. see figure 12 for location and dimensions of metal pad placement on the pcb. important note: designers using enerchips in their products should also download the enerchip user manual application note an-1026 found here: http://www.cymbet.com/products/datasheets-downloads.php. figure 12: recommended pcb layout for the CBC3150-d9c package (dimensions in mm) cymbet logo lot number part number date code CBC3150 labeling information placement enerchip cc CBC3150
?2009-2013 cymbet corporation ? tel: +1-763-633-1780 ? www.cymbet.com ds-72-03 rev f page 15 of 16 CBC3150 9mm x 9mm dfn package drawing and dimensions notes: 1. dimensions in millimeters. 2. package dimensions do not include mold fash, protrusions, burrs or metal smearing. 3. coplanarity applies to the exposed pad as well as the exposed terminals. maximum coplanarity shall be 0.08. warpage shall not exceed 0.10. 4. refer to jedec mo-229 outline. 5. exposed metallized feature connected to die paddle. 6. there are 10 contact pads on two opposite sides and no contact pads on the other two sides. pin 1 soldering, rework, and electrical test refer to the cymbet user manual an-1026 for soldering, rework, and replacement of the enerchip on printed circuit boards, and for instructions on in-circuit electrical testing of the enerchip. handling enerchips as msl 3 devices enerchip cbc050 devices are rated moisture sensitivity level 3 and must be mounted and refowed within 168 hours of being removed from the moisture barrier anti-static bag. enerchip cc CBC3150
?2009-2013 cymbet corporation ? tel: +1-763-633-1780 ? www.cymbet.com ds-72-03 rev f page 16 of 16 cymbet, the cymbet logo, and enerchip are cymbet corporation trademarks disclaimer of warranties; as is the information provided in this data sheet is provided as is and cymbet corporation disclaims all representations or warranties of any kind, express or implied, relating to this data sheet and the cymbet enerchip product described herein, including without limitation, the implied warranties of merchantability, ftness for a particular purpose, non-infringement, title, or any warranties arising out of course of dealing, course of performance, or usage of trade. cymbet enerchip products are not authorized for use in life critical applications. users shall confrm suitability of the cymbet enerchip product in any products or applications in which the cymbet enerchip product is adopted for use and are solely responsible for all legal, regulatory, and safety-related requirements concerning their products and applications and any use of the cymbet enerchip product described herein in any such product or applications. ordering information enerchip cc part number description notes CBC3150-d9c enerchip cc 50ah in 20-pin d9 dfn package shipped in tube CBC3150-d9c-tr1 CBC3150-d9c-tr5 enerchip cc 50ah in 20-pin d9 dfn package tape-and-reel - 1000 pcs (tr1) or 5000 pcs (tr5) per reel CBC3150-d9c-wp enerchip cc 50ah in 20-pin d9 dfn package waffe pack energy harvesting with the enerchip cc the enerchip cc can be confgured to collect energy from transducers such as low power photovoltaic (pv) cells and use that harvested energy to charge the integrated enerchip and deliver self-sustaining power to components such as microcontrollers, sensors, and radios in wireless systems. the schematic of figure 13 illustrates the feedback connection made from reset to en to implement the energy harvesting function with the CBC3150. in order to make most effcient use of the power available from the transducer (for example, a pv cell), it is necessary to know the electrical characteristics including voltage and peak power point of the transducer being used. for assistance in designing your system to effectively harvest energy from a power transducer in a specifc environment, contact cymbet applications engineering. figure 13: implementing energy harvesting with the enerchip cc u.s. patent no. 8,044,508. additional u.s. and foreign patents pending enerchip cc CBC3150

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