7 Related Documentation

Table 7-1 Flyback Controller Family Highlights

Device	Regulation	Operation Mode	Control Law	Internal High-Voltage Start Up	UVLO On/Off Threshold (typ)	MAX Current Sense Threshold (typ)	Package
UCC28C56H-Q1	PSR or SSR ⁽¹⁾, ⁽²⁾	DCM or CCM ⁽³⁾, ⁽⁴⁾	Fixed-Frequency PWM	No	14.5 V / 9 V	1 V	SOIC-8
UCC28700-Q1	PSR ⁽¹⁾	DCM ⁽³⁾	AMFM ⁽⁵⁾	No	21 V / 8 V	0.75 V	SOT23-6
UCC28730-Q1	PSR ⁽¹⁾	DCM ⁽³⁾	AMFM ⁽⁵⁾	Yes	21 V / 7 V	0.74 V	SOIC-7
UCC28740-Q1	SSR⁽²⁾	DCM⁽³⁾	AMFM⁽⁵⁾	Yes	21 V / 7.75 V	0.773 V	SOIC-7
UCC28781-Q1	SSR	TM	AMFM	No	17 V / 10.5 V	0.801 V	WQFN-24

(1) PSR = Primary side regulation

(2) SSR = Secondary side regulation

(3) DCM = Discontinuous conduction mode

(4) CCM = Continuous conduction mode

(5) AMFM = Amplitude Modulation/Frequency Modulation