application note _ 0 811 201 6 r ev:0 1 e - mail : dcdc@deltaww.com delta confidential http://www.deltaww.com/dcdc p 1 what is power b lock ? power b lo ck is not a stand along dcdc converter . i t contain s the necessary power stage components of a pol converter, su ch as mosfets , output inductor and driver . a dding pwm controller ( either digital or analog ones ) and necessary control circuit compon ents to power b lock, a full functioning pol converter is obtained . basic operation and features delta p ower b lock is designed to operate from a typical inte rmediate bus voltage ( 7v ~13.2v ), and provide an output voltage adjustable from 0.6~3.3v. the product is in smd package with a very small footprint (for example, the dimension of a 80a p ower b lock is 0.5 wx1.0lx 0.48h , the power density is up to 890w/in 3 ). multiple power block modules can be applied to power system in parallel fasion to application n ote for p ower b lock power b lock dc - dc modules are developed to address the ever - growing demands of increased current and power densities in mission critical applications while pro viding maximum flexibility for system configuration.
application note _ 0 811 201 6 r ev:0 1 e - mail : dcdc@deltaww.com delta confidential http://www.deltaww.com/dcdc p 2 provide higher output power. also in some of delta s power block design, mutiple power train is integrated in one p ower b lock module , which can provides either an i nt erleaved single output, or independent multiple outputs with one p ower b lock . f or e xample, delta s 45a p ower b lock d12s1r845 d has two 22.5a independent channels. i f the customer need s two different output voltages , they can set one channel at one output voltage and the other channel with a different output voltage , and both can output 22.5a current. i n addition, customer can set the two channels interleave to obtain a total of 45a output current. by paralleling two 45 a p ower b lock modules , one can obtain up to 90a output current. t his flexib ility makes it possible to obtain different output power with a single p ower b lock module . t herefore the number of different pol design is reduced. what benefits bring from power b lock? ? higher efficiency and power density ? ? ? easier thermal and emi man agement for system board ? s el f - contained thermal management. ? ? easier system design and qualification ? ? ? ? ? lower cost ? ?
application note _ 0 811 201 6 r ev:0 1 e - mail : dcdc@deltaww.com delta confidential http://www.deltaww.com/dcdc p 3 simpl ified application circuit for power bloc k power block gets maximum flexibi lity and use in a wide variety of applications, ranging from 0.6~3.3v with slight modification on control circuit . 140 a power block with pwm controller ltc7851 ( l t) 60a , 80a and 100a p ower b lock with pwm controller tps40425(ti)
application note _ 0 811 201 6 r ev:0 1 e - mail : dcdc@deltaww.com delta confidential http://www.deltaww.com/dcdc p 4 45a p ower b lock with pwm controller l tc3861 (linear) 30a p ower b lock with pwm controller px7141(infineon)
application note _ 0 811 201 6 r ev:0 1 e - mail : dcdc@deltaww.com delta confidential http://www.deltaww.com/dcdc p 5 delta power b lock m odel list m odel name input output eff @ 100% load ,max vout s ize (mm) lxwxh) recommended pwm controller d12s1r830 d 7~13.2v 0.8~1.8v max 30a 91.5% (11vin) 25.4x12.7x12.2 px7141h d12s1r845 d 7~13.2v 0.6~3.3v max 45a 95.3% (11vin) 25.4x12.7x12.2 tps40425/ltc3861 d12s1r860 d 7~13.2v 0.6~3.3v max 60a 93.8% (11vin) 25.4x12.7x12. 2 tps40425/ltc3861 d12s1r880 d 7~13.2v 0.6~3.3v max 80a 95.2% (11vin) 25.4x12.7x12.2 tps40425/ltc3861 - 1 d12s1r 10 0 d 7~13.2v 0.6~3.3v max 10 0a 95. 5 % (11vin) 25.4x12.7x12.2 tps40425/ltc3861 - 1 d12s1r 14 0 d 7~13.2v 0.6~3.3v max 1 4 0a 9 6 . 0 % (11vin) 30 . 0 x1 1 . 9 x12.2 l tc7851 ? f or more detail specification, pl ease refer to power b lock datasheet or contact with deltas technical support team.
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