JP6386549B2 - 高効率共振変換器のための装置および方法 - Google Patents
高効率共振変換器のための装置および方法 Download PDFInfo
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- JP6386549B2 JP6386549B2 JP2016524489A JP2016524489A JP6386549B2 JP 6386549 B2 JP6386549 B2 JP 6386549B2 JP 2016524489 A JP2016524489 A JP 2016524489A JP 2016524489 A JP2016524489 A JP 2016524489A JP 6386549 B2 JP6386549 B2 JP 6386549B2
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
- H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
- H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
- H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
- H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/33507—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of the output voltage or current, e.g. flyback converters
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
- H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
- H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
- H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
- H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/33569—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only having several active switching elements
- H02M3/33576—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only having several active switching elements having at least one active switching element at the secondary side of an isolation transformer
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/0048—Circuits or arrangements for reducing losses
- H02M1/0054—Transistor switching losses
- H02M1/0058—Transistor switching losses by employing soft switching techniques, i.e. commutation of transistors when applied voltage is zero or when current flow is zero
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/14—Arrangements for reducing ripples from dc input or output
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/01—Resonant DC/DC converters
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/156—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
- H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
- H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
- H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
- H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
- H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
- H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
- H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/33507—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of the output voltage or current, e.g. flyback converters
- H02M3/33523—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of the output voltage or current, e.g. flyback converters with galvanic isolation between input and output of both the power stage and the feedback loop
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
- H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
- H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
- H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
- H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/33569—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only having several active switching elements
- H02M3/33573—Full-bridge at primary side of an isolation transformer
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
- H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
- H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
- H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
- H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/33569—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only having several active switching elements
- H02M3/33576—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only having several active switching elements having at least one active switching element at the secondary side of an isolation transformer
- H02M3/33592—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only having several active switching elements having at least one active switching element at the secondary side of an isolation transformer having a synchronous rectifier circuit or a synchronous freewheeling circuit at the secondary side of an isolation transformer
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
- H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
- H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
- H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
- H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/337—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only in push-pull configuration
- H02M3/3376—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only in push-pull configuration with automatic control of output voltage or current
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/0003—Details of control, feedback or regulation circuits
- H02M1/0009—Devices or circuits for detecting current in a converter
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
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Description
102 スイッチネットワーク
104 共振タンク
112 トランスフォーマ
114 整流器
116 出力フィルタ
202 共振周波数
500 電力変換器
502 電力入力段
504 共振タンク
504 共振段
506 電力出力段
508 検出器
510 制御回路
600 電力変換器
700 電力変換器
800 LLC共振変換器
808 検出器
908 検出器
1008 検出器
1102 LLC共振変換器
1104 LLC共振変換器
1201 曲線
1202 共振周波数
1203 曲線
1204 スイッチング周波数
1205 曲線
1206 スイッチング周波数
C2 キャパシタ
C4 dcブロッキングキャパシタ
Ccm 同相キャパシタ
Ccm コモンキャパシタ
Ccm1 同相キャパシタ
Ccm2 同相キャパシタ
Cr キャパシタ
Cr 共振キャパシタ
D1 ダイオード
Io 負荷電流
Lm 磁化インダクタ
Lm 磁化インダクタンス
Lm_eq 等価磁化インダクタンス
Lr インダクタ
Lr 共振インダクタ
NS1 2次巻線
NS2 2次巻線
Q1 スイッチ
Q1 スイッチング要素
Q2 スイッチ
Q2 スイッチング要素
Q3 スイッチ
Q3 スイッチング要素
Q4 スイッチ
Q4 スイッチング要素
R1 負荷抵抗
Rcm 抵抗器
RL 負荷抵抗
RL_eq 等価負荷
RL_eq 等価負荷抵抗
S1 スイッチ
S2 スイッチ
T1 トランスフォーマ
T1 絶縁トランスフォーマ
T2 トランスフォーマ
VIN 入力dc電源
Claims (15)
- 変換器であって、
電源に結合された入力段であって、前記入力段は複数の電力スイッチを備える、入力段と、
前記複数の電力スイッチに結合された共振タンクと、
前記共振タンクに結合されたトランスフォーマと、
前記トランスフォーマに結合された出力段と、
前記変換器に結合された効率点トラッキングインジケータであって、前記効率点トラッキングインジケータは、前記トランスフォーマに結合された同相キャパシタ中を流れる電流であり、前記同相キャパシタは、前記トランスフォーマの2次側の中間点に直接結合される、効率点トラッキングインジケータと、
前記効率点トラッキングインジケータに結合された検出器と、
前記検出器から効率点トラッキング信号を受信し、前記効率点トラッキング信号に基づいて前記電力スイッチのスイッチング周波数を調整するように構成された制御回路と
を備え、
前記制御回路は、前記検出器からの前記効率点トラッキング信号の大きさが所定のしきい値よりも小さくなるまで、前記電力スイッチの前記スイッチング周波数を調整するように構成された、変換器。 - 前記同相キャパシタは、抵抗器を通って接地に結合され、前記検出器は、前記抵抗器の両端間の電圧を検出することを通して前記同相キャパシタ中を流れる前記電流を検出するように構成された、
請求項1に記載の変換器。 - 前記検出器は、
dcブロッキングキャパシタと、
前記dcブロッキングキャパシタに結合された整流器であって、前記整流器は、ac信号をdc信号に変換するように構成された、整流器と、
負荷抵抗と、
前記整流器に結合された電圧分割器と
を備える、請求項1に記載の変換器。 - 前記整流器は、
直列に接続された第1のキャパシタおよび第2のキャパシタと、
直列に接続された第1のダイオードおよび第2のダイオードであって、前記負荷抵抗は、前記第1のキャパシタおよび前記第2のキャパシタの共通ノードと、前記第1のダイオードおよび前記第2のダイオードの共通ノードとの間に結合された、第1のダイオードおよび第2のダイオードと
を備える、請求項3に記載の変換器。 - 前記整流器はダイオードとキャパシタとを備え、
前記ダイオードは、前記整流器の入力ノードと出力ノードとの間に結合され、
前記キャパシタは、前記整流器の前記出力ノードと接地との間に結合され、
前記負荷抵抗は、前記整流器の前記入力ノードと接地との間に結合された、
請求項3に記載の変換器。 - 共振変換器の動作方法であって、前記共振変換器は、
電源に結合された入力段であって、前記入力段は複数の電力スイッチを備える、入力段と、
前記複数の電力スイッチに結合された共振タンクと、
前記共振タンクに結合されたトランスフォーマと、
検出器と、
制御回路と、
前記トランスフォーマに結合された出力段と
を備え、
前記検出器によって、前記共振変換器のソフトスイッチングプロセスを示す信号を検出するステップであって、前記信号は、同相キャパシタ中を流れる電流に比例し、前記同相キャパシタは、前記トランスフォーマの2次側の中間点に直接結合される、ステップと、
前記信号の大きさが所定のしきい値よりも小さくなるまで、前記制御回路によって、前記共振変換器のスイッチング周波数を調整するステップと
を含む方法。 - 負荷増加に応答して、前記制御回路によって、より高いゲート駆動電圧を前記複数の電力スイッチに印加するステップと、
負荷低下に応答して、前記制御回路によって、より低いゲート駆動電圧を前記複数の電力スイッチに印加するステップと
をさらに含む、
請求項6に記載の方法。 - 前記同相キャパシタは、前記トランスフォーマの2次巻線の中間点に結合された、請求項6に記載の方法。
- 共振変換器の動作方法であって、前記共振変換器は第1の共振変換器を備え、前記第1の共振変換器は、
電力段であって、
電源に結合された入力段であって、前記入力段は複数の電力スイッチを備える、入力段と、
前記複数の電力スイッチに結合された共振タンクと、
前記共振タンクに結合された絶縁デバイスと、
整流器を通って前記絶縁デバイスに結合された出力段と
を備える、電力段と、
検出器と、
前記電力スイッチに結合された制御回路であって、前記制御回路は、前記電力スイッチのために複数のゲート駆動信号を生成する、制御回路と
を備え、
前記検出器によって、前記第1の共振変換器のソフトスイッチングプロセスを示す信号を検出するステップであって、前記信号は、同相キャパシタ中を流れる電流に比例し、前記同相キャパシタは、前記絶縁デバイスの2次側の中間点に直接結合される、ステップと、
前記制御回路によって、前記第1の共振変換器の負荷電流を検出するステップと、
前記制御回路によって、前記第1の共振変換器のスイッチング周波数を構成するステップであって、
前記負荷電流が所定の負荷レベルよりも大きいとき、前記信号の大きさが所定のしきい値よりも小さくなるまで、前記スイッチング周波数を調整することと、
前記負荷電流が前記所定の負荷レベルよりも小さいとき、前記第1の共振変換器の出力電圧が所定の規制範囲内になるまで、前記スイッチング周波数を増加させることと
を行うように構成する、ステップと
を含む方法。 - 前記共振変換器は第2の共振変換器をさらに備え、
前記第1の共振変換器および前記第2の共振変換器は並列に接続され、
前記第2の共振変換器は、前記第1の共振変換器と同じ構造である、請求項9に記載の方法。 - 前記第1の共振変換器の前記スイッチング周波数が前記第1の共振変換器の共振周波数にほぼ等しくなるまで、前記制御回路によって、前記第1の共振変換器の前記スイッチング周波数を調整するステップと、
前記第2の共振変換器の前記スイッチング周波数が前記第2の共振変換器の共振周波数にほぼ等しくなるまで、前記制御回路によって、前記第2の共振変換器の前記スイッチング周波数を調整するステップと
をさらに含む、請求項10に記載の方法。 - 前記負荷電流が前記所定の負荷レベルよりも大きいとき、前記制御回路によって、前記第1の共振変換器のゲートバイアス電圧を増加させるステップと、
前記負荷電流が前記所定の負荷レベルよりも小さいとき、前記制御回路によって、前記第1の共振変換器の前記ゲートバイアス電圧を低減するステップであって、前記第1の共振変換器のゲートドライバはロスレスゲートドライバである、ステップと
をさらに含む、請求項9に記載の方法。 - 前記負荷電流が前記所定の負荷レベルよりも大きいとき、前記制御回路によって、前記第1の共振変換器のデューティサイクルを増加させるステップと、
前記負荷電流が前記所定の負荷レベルよりも小さいとき、前記制御回路によって、前記第1の共振変換器の前記デューティサイクルを低減するステップであって、前記第1の共振変換器のゲートドライバはPWMゲートドライバである、ステップと
をさらに含む、請求項9に記載の方法。 - 前記複数のゲート駆動信号は、複数のゲートドライバを通って前記電力スイッチに送られ、前記ゲートドライバはロスレスゲートドライバである、
請求項9に記載の方法。 - 入力電圧変化に応答して、前記第1の共振変換器の前記出力電圧が第2の所定の規制範囲内になるまで、前記制御回路によって、前記スイッチング周波数を調整するステップ
をさらに含む、請求項9に記載の方法。
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