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US6437545B2
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DC/DC converter including control means for controlling multiple outputs using separate switching cycles for each output
Assignee: Uniloc 2017 LLC
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Filing: 2001-07-05
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Granted: 2002-08-20
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Expires: 2021-07-05
Abstract
Abstract A DC/DC converter ( 10; 30; 40; 50; 60 ), comprising inductive energy storage means ( 2 ), switching means (S 0 -S 7 ) and control means ( 9; 31; 41; 51; 61 ), wherein said control means ( 9; 31; 41; 51; 61 ) are arranged for selectively operating said switching means (S 0 -S 7 ) for providing electrical energy from said energy storage means ( 2 ) to an output (A; B; C; D) of said DC/DC converter ( 10; 30; 40; 50; 60 ) in both a Pulse Width Modulation (PWM) mode and a Pulse Frequency Modulation (PFM) mode switching cycle. The control means ( 9; 31; 41; 51; 61 ) are arranged for controlling multiple outputs (A; B; C; D) of said DC/DC convertor ( 10; 30; 40; 50; 60 ) by providing a sequence (T) of a number of separate switching cycles for each output (A; B; C; D), and for establishing a main output among said multiple outputs (A; B; C; D) requiring the highest amount of energy, wherein said main output in PWM mode determines the total amount of energy to be supplied in a sequence (T) and the number of switching cycles of an output in PWM mode is determined by part of the total amount of energy to be supplied at said output.
Inventors
- 👤 Ferdinand Jacob Sluijs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 00:43
CPC Classifications
H; H02; H02M; H02M3/00; H02M3/02; H02M3/04; H02M3/10; H02M3/145; H02M3/155; H02M3/156; H02M3/158; H02M3/1584; H02M1/00; H02M1/0083; H02M1/009
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
245 words
A DC/DC converter ( 10 ; 30 ; 40 ; 50 ; 60 ), comprising inductive energy storage means, switching means (S 0 -S 7 ) and control means ( 9 ; 31 ; 41 ; 51 ; 61 ), wherein said control means ( 9 ; 31 ; 41 ; 51 ; 61 ) are arranged for selectively operating said switching means (S 0 -S 7 ) for providing electrical energy from said energy storage means to an output (A; B; C; D) of said DC/DC converter ( 10 ; 30 ; 40 ; 50 ; 60 ) in both a Pulse Width Modulation (PWM) mode and a Pulse Frequency Modulation (PFM) mode switching cycle, characterised in that said control means ( 9 ; 31 ; 41 ; 51 ; 61 ) are arranged for controlling multiple outputs (A; B; C; D) of said DC/DC convertor ( 10 ; 30 ; 40 ; 50 ; 60 ) by providing a sequence (T) of a number of separate switching cycles for each output (A; B; C; D), and for establishing a main output among said multiple outputs (A; B; C; D) requiring the highest amount of energy, wherein said main output in PWM mode determines the total amount of energy to be supplied in a sequence (T) and the number of switching cycles of an output in PWM mode is determined by part of the total amount of energy to be supplied at said output.
Claim 2
Dependent Claim
245 words
A DC/DC converter ( 10 ; 30 ; 40 ; 50 ; 60 ), comprising inductive energy storage means, switching means (S 0 -S 7 ) and control means ( 9 ; 31 ; 41 ; 51 ; 61 ), wherein said control means ( 9 ; 31 ; 41 ; 51 ; 61 ) are arranged for selectively operating said switching means (S 0 -S 7 ) for providing electrical energy from said energy storage means to an output (A; B; C; D) of said DC/DC converter ( 10 ; 30 ; 40 ; 50 ; 60 ) in both a Pulse Width Modulation (PWM) mode and a Pulse Frequency Modulation (PFM) mode switching cycle, characterised in that said control means ( 9 ; 31 ; 41 ; 51 ; 61 ) are arranged for controlling multiple outputs (A; B; C; D) of said DC/DC convertor ( 10 ; 30 ; 40 ; 50 ; 60 ) by providing a sequence (T) of a number of separate switching cycles for each output (A; B; C; D), and for establishing a main output among said multiple outputs (A; B; C; D) requiring the highest amount of energy, wherein said main output in PWM mode determines the total amount of energy to be supplied in a sequence (T) and the number of switching cycles of an output in PWM mode is determined by part of the total amount of energy to be supplied at said output.
Claim 3
Dependent Claim
102 words
A DC/DC converter ( 10 ; 30 ; 40 ; 50 ; 60 ) according to claim 1 , wherein said control means ( 9 ; 31 ; 41 ; 51 ; 61 ) are arranged for determining of each output (A; B; C; D) a ratio being the number of switching cycles for said output (A; B; C; D) in said sequence (T) divided by the total number of switching cycles of said sequence (T), such that an active output (A; B; C; D) is selected based on said ratio and output voltage (Vout) of said output (A; B; C; D).
Claim 4
Dependent Claim
70 words
A DC/DC converter ( 10 ; 30 ; 40 ; 50 ; 60 ) according to claim 2 , wherein for an output (A; B; C; D) in PFM mode a new switching cycle is started if said output (A; B; C; D) voltage (Vout) drops below a reference voltage (Vref) and said ratio determines whether said output (A; B; C; D) is to be switched in said sequence (T).
Claim 5
Dependent Claim
100 words
A DC/DC converter ( 10 ; 30 ; 40 ; 50 ; 60 ) according to claim 2 , wherein said control means ( 9 ; 31 ; 41 ; 51 ; 61 ) are arranged such that for the main output in PWM mode its output voltage (Vout) controls the ratio of this output and the total energy provided in a sequence (T), and in that for an other output in PWM mode its output voltage (Vout) controls the ratio of this output and part of the total energy to be provided at said output in a sequence (T).
Claim 6
Dependent Claim
38 words
A DC/DC converter ( 10 ; 30 ; 40 ; 50 ; 60 ) according to claim 2 , wherein if several outputs are in a PWM mode, the main output is the output having the highest ratio.
Claim 7
Dependent Claim
74 words
A DC/DC converter ( 10 ; 30 ; 40 ; 50 ; 60 ) according to claim 5 , wherein said control means ( 9 ; 31 ; 41 ; 51 ; 61 ) are arranged such that if all outputs (A; B; C; D) are in a PWM mode the ratio of an output (A; B; C; D) is equal to the number of switching cycles of said output in said sequence (T).
Claim 8
Dependent Claim
243 words
A DC/DC converter ( 10 ; 30 ; 40 ; 50 ; 60 ) according to claim 1 , wherein said control means ( 9 ; 31 ; 41 ; 51 ; 61 ) for each output (A; B; C; D) comprise a separate control part ( 21 ; 22 ; 23 ), having a duty cycle output, a ratio output and a mode output, timer means ( 24 ) connected to said duty cycle output of said control parts ( 21 ; 22 ; 23 ) for controlling said switching means (S 0 -S 7 ), means ( 25 ) for establishing a main output and an active output, said means ( 25 ) being connected to said ratio and said mode output of each of said control parts ( 21 ; 22 ; 23 ) and having an active output connected to said timer means ( 24 ) and to an input each of said control parts ( 21 ; 22 ; 23 ) and a main output connected to a further input of said control parts ( 21 ; 22 ; 23 ), and comparator means ( 26 ; 27 ; 28 ) for comparing of each output (A; B; C; D) its output voltage (Vout) with a reference voltage (Vref), an output of said comparator means ( 26 ; 27 ; 28 ) connect to an input of an associated control part ( 21 ; 22 ; 23 ).
Claim 9
Dependent Claim
74 words
A DC/DC converter ( 10 ; 30 ; 40 ; 50 ; 60 ) according to claim 1 , said DC/DC converter ( 10 ; 30 ; 40 ; 50 ; 60 ) comprising at least one of a group including multi-output DC/DC up converters, multi-output DC/DC down converters, multi-output DC/DC up/down-converters, multi-output DC/DC inverting converters, multi-output DC/DC converters with positive and negative output, and multi-output DC/DC up/down-converters with multiple positive and negative outputs.
Claim 10
Dependent Claim
72 words
A power supply ( 12 ) comprising a DC/DC converter ( 10 ; 30 ; 40 ; 50 ; 60 ) according to claim 1 , arranged for receiving an input voltage (Vin) at input terminals ( 2 , 3 ) and for providing controlled output voltages (Vout) at multiple output terminals ( 4 - 8 ) of said DC/DC converter ( 10 ; 30 ; 40 ; 50 ; 60 ).
Claim 11
Dependent Claim
26 words
An electronic appliance ( 11 ) comprising a DC/DC converter ( 10 ; 30 ; 40 ; 50 ; 60 ) according to claim 1 .
References Cited (Backward Citations)
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| 7.5 Years (Year 8) | 2009-08-19 | 2010-02-18 | 2010-08-20 | $3760.00 | Window Closed / Lapsed |
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