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Digital Adaptive Multi-Mode SR Controllers

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Synchronous-rectification controllers replace conventional diode rectification with a synchronous-rectification MOSFET, using digital adaptive algorithms to dynamically adjust switching timing across multiple operating modes, reducing rectification loss and raising power-supply efficiency.

Supported operating modes (CCM/DCM/QR, etc.) must cover the target power supply's actual operating range
The adaptive algorithm's response speed affects rectification efficiency and reliability during load transients
Drive capability matched to the external power MOSFET determines the actual rectification-loss reduction achieved
Open-loop/reverse-current protection matters for safety under light-load or no-load conditions

Learn more: Digital Adaptive Multi-Mode SR Controllers Selection Guide →

HY905M

HYASIC

Supported Operating Modes: CCM/QR /DCM
Green Mode: -
Drain Sensing: 130
Min. Turn-On: 0.9
Min. Turn-Off: 2.50
Turn-On Delay: 26

HY906M

HYASIC

Supported Operating Modes: CCM/QR /DCM
Green Mode: -
Drain Sensing: 130
Min. Turn-On: 0.9
Min. Turn-Off: 1.25
Turn-On Delay: 26

HY913B

HYASIC

Supported Operating Modes: CCM/QR /DCM
Green Mode: -
Drain Sensing: 150
Min. Turn-On: 0.8
Min. Turn-Off: 2.0
Turn-On Delay: 26

HY913C

HYASIC

Supported Operating Modes: CCM/QR /DCM
Green Mode: -
Drain Sensing: 150
Min. Turn-On: 0.8
Min. Turn-Off: 0.2
Turn-On Delay: 26

HY913S

HYASIC

Supported Operating Modes: CCM/QR /DCM
Green Mode: √
Drain Sensing: 150
Min. Turn-On: 0.8
Min. Turn-Off: 0.2
Turn-On Delay: 26

HY923A

HYASIC

Supported Operating Modes: CCM/QR /DCM
Green Mode: -
Drain Sensing: 150
Min. Turn-On: 0.50
Min. Turn-Off: 0.3
Turn-On Delay: 26

HY923B

HYASIC

Supported Operating Modes: CCM/QR /DCM
Green Mode: -
Drain Sensing: 150
Min. Turn-On: 1.00
Min. Turn-Off: 2.5
Turn-On Delay: 26

HY923C

HYASIC

Supported Operating Modes: CCM/QR /DCM
Green Mode: -
Drain Sensing: 150
Min. Turn-On: 1.00
Min. Turn-Off: 0.3
Turn-On Delay: 26

HY923D

HYASIC

Supported Operating Modes: -
Green Mode: -
Drain Sensing: 150
Min. Turn-On: 0.70
Min. Turn-Off: 0.3
Turn-On Delay: 26

	Brand
HY905M	HYASIC	CCM/QR /DCM	-	130	0.9	2.50	26	25	−150	−50	SOT23-6L
HY906M	HYASIC	CCM/QR /DCM	-	130	0.9	1.25	26	25	−150	−50	SOT23-6L
HY913B	HYASIC	CCM/QR /DCM	-	150	0.8	2.0	26	10	−180	−50	SOT23-6L
HY913C	HYASIC	CCM/QR /DCM	-	150	0.8	0.2	26	10	−180	−50	SOT23-6L
HY913S	HYASIC	CCM/QR /DCM	√	150	0.8	0.2	26	10	−150	−50	SOT23-6L
HY923A	HYASIC	CCM/QR /DCM	-	150	0.50	0.3	26	10	−150	−52	SOT23-6L
HY923B	HYASIC	CCM/QR /DCM	-	150	1.00	2.5	26	10	−150	−52	SOT23-6L
HY923C	HYASIC	CCM/QR /DCM	-	150	1.00	0.3	26	10	−150	−52	SOT23-6L
HY923D	HYASIC	-	-	150	0.70	0.3	26	10	−150	−52	SOT23-6L