Datasheet MIN1072M MinE-CAP (Power Integrations) - 6

MinE-CAP Application Example
C4 3300 pF 760 VAC R8 C21 C9 100 Ω R1 R9 R10 10 µF 330 µF Q1 1% 3.9 MΩ 680 kΩ 680 kΩ FL1 FL4 35 V 25 V AONS32304 1/16 W
VBUS
R7 R11 324 kΩ 20 Ω 1% C6 C10 1/8 W C7 BR1 BR2 4700 pF 330 µF 10 µF 1 1 Z4DGP408L-HF Z4DGP408L-HF C2 250 V 25 V 35 V R12 D1 100 µF D3 R3 10 Ω BAV19WS-7-F 2 3 2 3 160 V R13 DFLR1800-7 D2 C5 1.8 MΩ 1% 20 Ω 800 V BAV21WS 2.2 nF 1% 1/16 W FL6 FL3 200 V
RTN
C8 C22 4 4 FL2 R14 330 µF 10 µF .006 Ω 25 V 35 V D4 Q2 1% BAV3004WS-7 1/2 W R4 300 V AONS62922 1 MΩ R5 2 MΩ Q3 T1 1% FL5 E32 R17 AONS62922 100 kΩ 2 1
MinE-CAP
1% L2 U2 1/16 W CMC MIN1072M T1G 20 mH
D VBOT VTOP
4 3
GND CONTROL
C15 D5 10 µF C1
GND
63 V 39 µF MMSZ5261B 400 V T1G
S SG L BP
C3 Q4 R16 220 nF TA06L 47 Ω 560 V 1/10 W MMB R2 R6 C13 2 MΩ 2 MΩ 2.2 µF 1% 1% C12 10 V DNP DNP 2.2 µF 10 V 3 4 L1 R18 CMC 5.1 kΩ PI-9146-100720 250 µH 1/8 W R19 C14 1 2 2.2 kΩ
D V FWD SR BPS GND IS VOUT VB/D
2.2 µF .01% 10 V F1 1/10 W
CONTROL uVCC
2.5 A
SDA uVCC
R22 R21 R20
SCL
V 10 kΩ 10 kΩ 47 Ω D6 1% 1%
L N
10 1%
S BPP
1/10 W 1/10 W
InnoSwitch3-Pro SDA
DZ2S100M0L C16 U1 470 nF INN3370C-H302
SCL
10 V Figure 8. Schematic of DER-626, a 65 W USB PD 3.0 Adapter Design. The circuit in Figure 8 shows a 65 W (5 V / 3 A; 9 V / 3 A; 15 / 3 A;
MinE-CAP and InnoSwitch3 Primary
20 V / 3.25 A) USB PD 3.0 compliant adapter using the MinE-CAP IC When a MinE-CAP IC is used in tandem with the InnoSwitch3, the V to maximize power density. The MinE-CAP IC al ows for the pin of the InnoSwitch3 IC is connected directly to the LINE pin of the significant reduction of the physical size of the input bulk capacitors MinE-CAP IC. Resistors R3 and R5 provide input voltage sensing for by al owing the use of a smal er (both in size and capacitance) 400 V both the the MinE-CAP IC and InnoSwitch3 ICs. The MinE-CAP IC capacitor paired with a 160 V capacitor. The MinE-CAP IC also uses R3 and R5 primarily to monitor the line voltage and maintain the eliminated the need for an inrush current limiting thermistor, leading voltage across the low-voltage bulk capacitor, C2 below its voltage to more saved space and increased efficiency. Together with the rating when the line voltage is above 100 VAC. In contrast, the InnoSwitch3-Pro IC and low-profile planar magnetics, a form factor of InnoSwitch3 uses the current from the LINE pin to determine line L- 82 mm x W- 51 mm x H- 12 mm was realized. This corresponds to undervoltage and overvoltage conditions. During regular operation, a power density of 21.22 W/in3, with a system efficiency exceeding the current from the LINE pin fol ows the current flowing through R3 90%. This design also meets DOE Level 6 and EC CoC 5 average and R5, so the InnoSwitch3 IC operates as if said resistors are efficiency standards. connected directly to the V pin. Resistor R1 is a bleed resistor used to regulate the voltage across C3, while resistor R4 is used by the
Circuit Description
MinE-CAP IC to sample the voltage at the negative terminal of C2.
Input Rectifier and EMI Filter
For this specific design, bypass capacitor C16 is shared by both the Fuse F1 isolates the circuit and protects the AC line from excessive BPP pin of the InnoSwitch3 IC and the BYPASS pin of the MinE-CAP current due to component failure. Common mode chokes L1 and L2 IC. The value of C16 is chosen based on the desired current limit of along with capacitors C3 and C4 provide common mode and the InnoSwitch3 IC. As with any flyback design using the differential mode noise filtering to minimize conducted EMI emissions. InnoSwitch3 IC, one end of the transformer primary is connected to The bridge rectifier formed by BR1 and BR2 rectifies the AC line the rectified DC bus while the other end is connected to the voltage and provides a ful -wave rectified DC voltage across the high InnoSwitch3 DRAIN pin. voltage bulk capacitor, C1. Two bridge rectifiers are used to improve A low-cost RCD snubber formed by diode D3, resistors R9, R10 and heat dissipation by doubling the rectifier surface area since power R13, and capacitor C6 limits the voltage across the InnoSwitch3’s loss from two rectifiers is the same as that of a single device. Drain-Source nodes during turn-off by dissipating the energy stored The MinE-CAP IC controls the rate of charge of the 160 V capacitor in the leakage inductance of the transformer. during start-up; thus, inrush current is mostly dependent on the value The InnoSwitch3 IC has an internal current source that charges of the 400 V capacitor. Since the capacitance of the 400 V capacitor capacitor C16 when AC input is first applied. Once the InnoSwitch3 is significantly less when using a MinE-CAP IC, the use of a current IC starts switching and during normal operation, bias current is drawn limiting NTC thermistor is no longer necessary. from the auxiliary winding of the transformer. The output of the
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