通嘉PD快充适配器高效能及小型化之氮化镓集成方案-EDN 电子技术设计

 随着消费者对便携性和高效充电的需求增加，手机厂商和充电器品牌纷纷推出小型化PD快充产品，以满足市场需求···

前言

随着消费者对便携性和高效充电的需求增加，手机厂商和充电器品牌纷纷推出小型化PD快充产品，以满足市场需求。小型化PD快充不仅适用于手机充电，还可广泛应用于其他电子设备，如笔记本电脑、平板电脑等，为用户提供更加便捷的充电体验。而PD快充小型化得益于技术创新，如采用集成合封氮化镓（GAN）技术，提高能量转换率，高集成合封度IC减少外围元器件数量(约8颗组件)，从而实现小巧体积与提高系统可靠性。PpFednc

通嘉PD快充解决方案

通嘉科技推出新一代高效率、高整合型PD Total Solution解决方案之LD968/9x+LD8528D+LD6935A333, 产品覆盖 45W 到 65W 功率等级范围，高集成度加高性能让IC在操作上可满足PD输出电压变化应用，同时也大幅度提高功率密度来符合市场小型化需求，下文将详细介绍这三颗IC特色。PpFednc

主控LD968/9x 采用混合模式(CCM+QR) 工作且内置E-Mode或D-Mode GaN，低压重载时可以操作于连续(CCM)模式(65/ 85/ 100KHz)提高带载能力，准谐振模式(QR)工作频率最大到达227KHz，以及外部可调整式过温度保护机制(External OTP), 并符合单层、双层PCB加工工艺。IC在不同输入电压、输出电压以及输出功率的情况下，自适应切换最佳频率操作模式，以提高系统工作效率。无论是对于美国能源局所订定的规范(US DOE Level VI)或是欧盟发布的法规(EU CoC Tier-2)，都可以符合新能源法规。PpFednc

PpFednc

图1 LD968/9x典型应用及封装说明PpFednc

PpFednc

LD968/9x详细功能说明：PpFednc

内置650V E-Mode GaN FET (Rds_on:165mΩ及365mΩ) 或D-Mode GaN FET(Rds_ON 230mΩ Typ.)
自带高压（耐压700V）启动电路
采用混合模式控制（CCM+QR）操作
HV引脚有内置X电容泄放功能
HV引脚有内置BNI(开机)/BNO（欠压）保护
OCP/OPP/VCC OVP/FB OVP保护
可调CS_OTP过温保护
CCM 工作频率65KHz or 100KHz 而QR最大工作频率227KHz
VCC引脚额定电压可达83V
采用CCO技术提高OCP精确度±8%（图2专利）
内置PWM/QRD/CS抖频技术优化传导EMI
自适应式智能化降频曲线for PD应用（图3专利）

PpFednc

图2 Io_ocp点计算PpFednc

当PD改变输出电压时，一次侧辅助绕组电压也会跟随变化，芯片 FB引脚可通过侦测绕组电压不同自动改变降频曲线让在不同输出电压时都工作在最佳频率点，使PD有效提高了每一个电压点效率如图3降频曲线说明.PpFednc

PpFednc
PpFednc

PpFednc

LD968/9X 降频曲线PpFednc

PpFednc

图3降频曲线说明PpFednc

PpFednc

LD8528D是通嘉新一代次级侧同步整流驱动器IC。它适用于CCM、DCM和QR模式下的反激式低压侧和高压侧同步整流。PpFednc

LD8528D详细功能说明：PpFednc

适用于CCM、DCM和QR（谷锁）模式下的低压侧和高压侧反激同步整流
适用于PD应用，输出电压范围为3V至21V
内含自供电功能(无需辅助绕组)，可运行于低输出电压或者高压侧设计
可适用于具有峰值功率的初级侧
可编程关断等级
快速关断总延迟时间~30ns
驱动和下拉电流能力达1A/-3A

PpFednc

图4.反激低压侧同步整流典型应用PpFednc

PpFednc

图5.反激高压侧同步整流典型应用PpFednc

PpFednc

LD6935A333是次级侧的USB电源传输（USB PD）Type-C控制器，专为USB Type-C电源传输应用而设计，如电源适配器、钳式充电器、车载充电器、移动电源等。嵌入式8位MCU用于处理PD协议、策略引擎和设备管理器，内置双相标记编码（BMC）用于USB PD通信。LD6935A333具有增强的电气特性。11位ADC可以提供更高精度的保护。集成模拟线补提优化了线性补偿特性。除了增强了电气特性外，LD6935A333还集成了VBUS N-MOS(30V/7mohm)，以最大限度地减少外部组件。LD6935A333优化的BMC PD通信系统，简化了外围接口电路。LD6935A333采用WSOP-8封装，较小的8引脚封装将具有更高的功率密度。它在PD应用中具有体积小、BOM成本低的优点。PpFednc

LD6935A333功能特性说明：PpFednc

支持PD2.0/3.0，符合USB PD Type-C标准
可编程Type-C
集成VCONN电源读取E-Marked IC
高度集成（内置VBUS N-MOSFET、可编程恒压控制、低压侧电流感测放大器）
嵌入式MCU（具有16kbyte OTP和256+256bytes）SRAM
11位ADC，使输出电压和电流侦测更精密
11位DAC，使输出电压精度控制更精准
内置输出电容快速放电线路
工作电压范围宽：4V~24V
支持待机省电模式
可编程过电压保护（OVP）、欠压保护（UVP）、过电流保护（OCP）、短路保护（SCP）
过温保护（OTP）

PpFednc

图6.LD6935A333典型应用PpFednc

通嘉PD 65W Demo Board设计范例

AC-DC PWM: LD968LAAIN +SR:LD8528D+PD协议:LD6935A333PpFednc

PCB Size: 84.5 mm ( L ) x 43.6 mm ( W ) x 24mm ( H )PpFednc

Power Density: 12 W/inch^3PpFednc

输出功率:5V/3A, 9/3A,12V/5A, 15V/4.33A, 20V/3.25APpFednc

PpFednc	PpFednc
图7 PD 65W实体图PpFednc

PpFednc

1.测试规格

PpFednc

ItemPpFednc	Min.PpFednc	Typ.PpFednc				Max.PpFednc	Test ResultPpFednc
Input VoltagePpFednc	90VacPpFednc	115VacPpFednc		230VacPpFednc		264VacPpFednc	─PpFednc
Input FrequencyPpFednc	47HzPpFednc	60HzPpFednc		50HzPpFednc		63HzPpFednc	─PpFednc
OutputPpFednc Voltage&PpFednc CurrentPpFednc	PD 3.0 ModePpFednc	5V/3APpFednc	9V/3APpFednc	12V/5APpFednc	15V/PpFednc 4.33APpFednc	20V/PpFednc 3.25APpFednc	─PpFednc
EfficiencyPpFednc		CoC Tier 2PpFednc					PassPpFednc
Standby PowerPpFednc		< 75mW @ 230 V_ACPpFednc					PassPpFednc
Power SavingPpFednc		Po=0.15W , Pin< 0.3W @ 230 V_ACPpFednc Po=0.25W , Pin< 0.5W @ 230 V_ACPpFednc					PassPpFednc
Output Voltage AccuracyPpFednc		END of PCB (PD程序线损补偿) 5V < ± 6 % / 9V , 12, 15V , 20V < ± 5 %PpFednc					PassPpFednc
Over Current ProtectionPpFednc		< 130 %PpFednc					-PpFednc
Over Voltage ProtectionPpFednc		< 7.5V ( for 5V ) / < 13.5V ( for 9V ) / 15.0V ( for 12V ) / < 18.75V ( for 15V ) / < 25V ( for 20V )PpFednc					PassPpFednc
Ripple & Noise VoltagePpFednc		< 300 mVPpFednc					PassPpFednc
Dynamic LoadPpFednc		< ± 10% of V_BUS,SETPpFednc					PassPpFednc
Turn-on Delay TimePpFednc		< 1 SPpFednc					PassPpFednc
Hold-up TimePpFednc		> 10mS @ Typical AC InputPpFednc					PassPpFednc
Rise TimePpFednc		< 20 mSPpFednc					PassPpFednc
OvershootPpFednc		< 10 %PpFednc					PassPpFednc
Component StressPpFednc		< 95 %PpFednc					PassPpFednc
AC Brown-inPpFednc		< 85 VacPpFednc					PassPpFednc
AC Brown-outPpFednc		> 60 VacPpFednc					PassPpFednc

2.原理图

PpFednc

.PpFednc

3. PCB_Layout

Top sidePpFednc

PpFednc

Bottom sidePpFednc

PpFednc

4. BOM

PpFednc

LocationPpFednc	DescriptionPpFednc	Q’tyPpFednc
R1PpFednc	51KR / 1/8W / 0805PpFednc	1PpFednc
R2PpFednc	14.7KR / 1/10W / 0603PpFednc	1PpFednc
R4PpFednc	0R / 1/10W / 0603PpFednc	1PpFednc
R5PpFednc	0R / 1/8W / 0805PpFednc	1PpFednc
R6PpFednc	3.3KR / 1/10W / 0603PpFednc	1PpFednc
R7,R8PpFednc	20KR / 1/4W / 1206PpFednc	2PpFednc
R9PpFednc	220R / 1/10W / 0603PpFednc	1PpFednc
R10PpFednc	0.39R / 1/4W / 1206PpFednc	1PpFednc
R11,R14PpFednc	62R / 1/8W / 0805PpFednc	2PpFednc
R12, R13PpFednc	300KR / 1/4W / 1206PpFednc	2PpFednc
R15PpFednc	0.43R / 1/4W / 1206PpFednc	1PpFednc
R17PpFednc	10KR / 1/10W / 0603PpFednc	1PpFednc
R18PpFednc	12R / 1/4W / 1206PpFednc	1PpFednc
R19PpFednc	20KR / 1/10W / 0603PpFednc	1PpFednc
R20PpFednc	2.2R / 1/10W / 0603PpFednc	1PpFednc
R22PpFednc	100KR / 1/10W / 0603PpFednc	1PpFednc
R23PpFednc	5.1KR / 1/10W / 0603PpFednc	1PpFednc
R25PpFednc	300R / 1/10W / 0603PpFednc	1PpFednc
R30PpFednc	5mR / 1/4W / 1206PpFednc	1PpFednc
SJP1PpFednc	130KR / 1/8W / 0805PpFednc	1PpFednc
SJP2, SJP3PpFednc	0R / 1/10W / 0603PpFednc	1PpFednc
SJP4PpFednc	0R / 1/4W / 1206PpFednc	1PpFednc
JP1PpFednc	Jumper / 3 * 12.5 * 3PpFednc	1PpFednc
JP2PpFednc	Jumper / 3 * 10 * 3PpFednc	1PpFednc
NTC1, NTC2PpFednc	NCPpFednc	0PpFednc
C1, C2,C6,C10,C18PpFednc	NCPpFednc	0PpFednc
C3PpFednc	2.2nF / 100V / 0805PpFednc	1PpFednc
C4PpFednc	6.8nF / 100V / 0805PpFednc	1PpFednc
C5, C15PpFednc	2.2uF / 16V / 0603PpFednc	1PpFednc
C7PpFednc	330pF / 50V / 0603PpFednc	1PpFednc
C8PpFednc	100pF / 50V / 0603PpFednc	1PpFednc

LocationPpFednc	DescriptionPpFednc	Q’tyPpFednc
C9PpFednc	82uF / 400VPpFednc	1PpFednc
C11PpFednc	470pF / 50V / 0603PpFednc	1PpFednc
C12PpFednc	47nF / 50V / 0603PpFednc	1PpFednc
C13,C17PpFednc	1000pF / 1kV / 1206PpFednc	1PpFednc
C14PpFednc	10nF / 50V / 0603PpFednc	1PpFednc
C16PpFednc	100pF / 1kV / 1206PpFednc	1PpFednc
C20, C21PpFednc	820Uf / 25V / Rubycon ZLHPpFednc	2PpFednc
CX1PpFednc	0.47uF / 275V / X2PpFednc	1PpFednc
CY1PpFednc	470pF / 250V / Y1PpFednc	1PpFednc
L3PpFednc	11mHPpFednc	1PpFednc
L2PpFednc	633 / 300uHPpFednc	1PpFednc
T1PpFednc	ATQ23 / 28:13:5 / 260uHPpFednc	1PpFednc
F1PpFednc	4A / 250VPpFednc	1PpFednc
BD1PpFednc	WRLSB80M / 1KV / 8APpFednc	1PpFednc
D1PpFednc	NCPpFednc	0PpFednc
D2PpFednc	RS1ML / 1KV / 1APpFednc	1PpFednc
D3, D5PpFednc	S1ML / 1KV / 1APpFednc	2PpFednc
D7PpFednc	RS1ML / 1KV / 1APpFednc	1PpFednc
Q2PpFednc	AONS66923 / 100VPpFednc	1PpFednc
IC1PpFednc	LD968LAAIN / LSOP-9PpFednc	1PpFednc
IC2PpFednc	LD8528D / SOT-26PpFednc	1PpFednc
IC3PpFednc	LD6935A333 / SOP-8PpFednc	1PpFednc
U1PpFednc	EL1019 / 4 Pin SopPpFednc	1PpFednc

PpFednc

5. 变压器设计

PpFednc

Schematic of WindingPpFednc	Construction of WindingPpFednc
PpFednc	PpFednc

WindingPpFednc No.PpFednc	Pin No.PpFednc		WindingPpFednc TypesPpFednc	Number of TurnsPpFednc		RemarksPpFednc
WindingPpFednc No.PpFednc	StartPpFednc	FinishPpFednc	WindingPpFednc TypesPpFednc	WindingPpFednc	TapePpFednc	RemarksPpFednc
N1PpFednc	3PpFednc	6PpFednc	0.25Φ*2PpFednc	15PpFednc	2PpFednc	Np1PpFednc	Pin朝绕线机台PpFednc
N2PpFednc	4PpFednc	2PpFednc	0.18Φ*3PpFednc	13PpFednc	2PpFednc	NauxPpFednc	Pin朝绕线机台PpFednc
N3PpFednc	+PpFednc	-PpFednc	0.2Φ72PpFednc	5PpFednc	2PpFednc	Ns1PpFednc	Pin朝绕线机台PpFednc
N4PpFednc	2PpFednc	XPpFednc	02Φ*3PpFednc	10PpFednc	2PpFednc	CancelPpFednc	Pin朝绕线机台PpFednc
N5PpFednc	6PpFednc	1PpFednc	0.25Φ*2PpFednc	13PpFednc	2PpFednc	Np2PpFednc	Pin朝绕线机台PpFednc
N6PpFednc	+PpFednc	-PpFednc	0.2Φ72PpFednc	5PpFednc	2PpFednc	Ns2PpFednc	Pin朝绕线机台PpFednc
FoilPpFednc	2PpFednc		5mm10mm1milPpFednc	PpFednc	PpFednc	Core底部贴铜下地Pin1PpFednc

PpFednc

BobbinPpFednc

ShapePpFednc

CorePpFednc

MaterialPpFednc

A_ePpFednc

( mm² )PpFednc

LPPpFednc

( µH )PpFednc

ATQ23PpFednc

96PpFednc

100PpFednc

260uH ± 5 %PpFednc

@ 100 kHz / 1 VPpFednc

Bottom View of BobbinPpFednc

PpFednc

6. 效率测试

PpFednc

Input VoltagePpFednc	90Vac / 60HzPpFednc	115 V_AC / 60 HzPpFednc	230 V_AC / 50 HzPpFednc
Output CurrentPpFednc	100 %, 75 %, 50 %, 25 %, 10 % of Full LoadPpFednc
Measured Point of Output VoltagePpFednc	End of PCBPpFednc
Duration of Burn-inPpFednc	30 MinutesPpFednc
RequirementPpFednc	CoC Tier 2PpFednc

PpFednc

输入115V/60Hz操作时各输出及载点效率表PpFednc	输入230V/50Hz操作时各输出及载点效率表PpFednc
PpFednc	PpFednc

PpFednc

115V/60HzPpFednc

V_IN,ACPpFednc ( V / Hz )PpFednc	ModePpFednc	V_BUS,SETPpFednc ( V )PpFednc	V_BUS,PCBPpFednc ( V )PpFednc	I_OUTPpFednc ( A )PpFednc	P_BUS,PCBPpFednc ( W )PpFednc	P_INPpFednc ( W )PpFednc	ηPpFednc ( % )PpFednc	η_AV,4-PointsPpFednc ( % )PpFednc	RequirementPpFednc ( % )PpFednc
115 / 60PpFednc	PD 3.0PpFednc	5PpFednc	5.273PpFednc	2.996PpFednc	15.798PpFednc	17.492PpFednc	90.32PpFednc	90.45PpFednc	> 81.84PpFednc
			5.203PpFednc	2.250PpFednc	11.707PpFednc	12.866PpFednc	90.99PpFednc
			5.130PpFednc	1.501PpFednc	7.700PpFednc	8.492PpFednc	90.68PpFednc
			5.055PpFednc	0.750PpFednc	3.792PpFednc	4.222PpFednc	89.81PpFednc
			5.015PpFednc	0.300PpFednc	1.505PpFednc	1.759PpFednc	85.53PpFednc	--PpFednc	> 72.48PpFednc
		9PpFednc	9.282PpFednc	2.996PpFednc	27.809PpFednc	30.353PpFednc	91.62PpFednc	91.72PpFednc	> 87.30PpFednc
			9.210PpFednc	2.250PpFednc	20.723PpFednc	22.573PpFednc	91.80PpFednc
			9.138PpFednc	1.500PpFednc	13.707PpFednc	14.926PpFednc	91.83PpFednc
			9.060PpFednc	0.750PpFednc	6.795PpFednc	7.416PpFednc	91.63PpFednc
			9.010PpFednc	0.300PpFednc	2.703PpFednc	3.046PpFednc	88.74PpFednc	PpFednc	77.3PpFednc
		12PpFednc	12.582PpFednc	4.997PpFednc	62.872PpFednc	69.368PpFednc	90.64PpFednc	91.64PpFednc	> 89.00PpFednc
			12.467PpFednc	3.751PpFednc	46.764PpFednc	50.919PpFednc	91.84PpFednc
			12.347PpFednc	2.500PpFednc	30.868PpFednc	33.551PpFednc	92.00PpFednc
			12.227PpFednc	1.250PpFednc	15.284PpFednc	16.600PpFednc	92.07PpFednc
			12.150PpFednc	0.500PpFednc	6.075PpFednc	6.662PpFednc	91.19PpFednc	--PpFednc	> 79.00PpFednc
		15PpFednc	15.435PpFednc	4.327PpFednc	66.787PpFednc	73.088PpFednc	91.38PpFednc	91.94PpFednc	> 89.00PpFednc
			15.333PpFednc	3.248PpFednc	49.802PpFednc	54.064PpFednc	92.12PpFednc
			15.228PpFednc	2.165PpFednc	32.969PpFednc	35.793PpFednc	92.11PpFednc
			15.120PpFednc	1.083PpFednc	16.375PpFednc	17.770PpFednc	92.15PpFednc
			15.050PpFednc	0.433PpFednc	6.520PpFednc	7.165PpFednc	90.99PpFednc	--PpFednc	> 79.00PpFednc
		20PpFednc	20.335PpFednc	3.246PpFednc	66.007PpFednc	71.870PpFednc	91.84PpFednc	91.89PpFednc	> 89.00PpFednc
			20.255PpFednc	2.438PpFednc	49.382PpFednc	53.744PpFednc	91.88PpFednc
			20.177PpFednc	1.625PpFednc	32.788PpFednc	35.671PpFednc	91.92PpFednc
			20.090PpFednc	0.813PpFednc	16.335PpFednc	17.774PpFednc	91.90PpFednc
			20.040PpFednc	0.325PpFednc	6.513PpFednc	7.240PpFednc	89.96PpFednc	--PpFednc	> 79.00PpFednc

PpFednc

230V/50HzPpFednc

V_IN,ACPpFednc ( V / Hz )PpFednc	ModePpFednc	V_BUS,SETPpFednc ( V )PpFednc	V_BUS,PCBPpFednc ( V )PpFednc	I_OUTPpFednc ( A )PpFednc	P_BUS,PCBPpFednc ( W )PpFednc	P_INPpFednc ( W )PpFednc	ηPpFednc ( % )PpFednc	η_AV,4-PointsPpFednc ( % )PpFednc	RequirementPpFednc ( % )PpFednc
230 / 50PpFednc	PD 3.0PpFednc	5PpFednc	5.275PpFednc	2.997PpFednc	15.809PpFednc	17.748PpFednc	89.076PpFednc	87.60PpFednc	> 81.84PpFednc
			5.204PpFednc	2.250PpFednc	11.709PpFednc	13.204PpFednc	88.678PpFednc
			5.130PpFednc	1.500PpFednc	7.695PpFednc	8.747PpFednc	87.973PpFednc
			5.055PpFednc	0.750PpFednc	3.791PpFednc	4.478PpFednc	84.664PpFednc
			5.016PpFednc	0.300PpFednc	1.505PpFednc	1.959PpFednc	76.815PpFednc	--PpFednc	> 72.48PpFednc
		9PpFednc	9.282PpFednc	2.996PpFednc	27.809PpFednc	30.429PpFednc	91.389PpFednc	90.70PpFednc	> 87.30PpFednc
			9.211PpFednc	2.250PpFednc	20.725PpFednc	22.696PpFednc	91.315PpFednc
			9.137PpFednc	1.500PpFednc	13.706PpFednc	15.059PpFednc	91.012PpFednc
			9.061PpFednc	0.750PpFednc	6.796PpFednc	7.630PpFednc	89.066PpFednc
			9.021PpFednc	0.300PpFednc	2.706PpFednc	3.221PpFednc	84.020PpFednc	PpFednc	77.3PpFednc
		12PpFednc	12.585PpFednc	4.997PpFednc	62.887PpFednc	68.276PpFednc	92.107PpFednc	91.94PpFednc	> 89.00PpFednc
			12.466PpFednc	3.750PpFednc	46.748PpFednc	50.754PpFednc	92.106PpFednc
			12.346PpFednc	2.500PpFednc	30.865PpFednc	33.540PpFednc	92.024PpFednc
			12.225PpFednc	1.250PpFednc	15.281PpFednc	16.697PpFednc	91.521PpFednc
			12.149PpFednc	0.500PpFednc	6.075PpFednc	6.878PpFednc	88.318PpFednc	--PpFednc	> 79.00PpFednc
		15PpFednc	15.438PpFednc	4.327PpFednc	66.800PpFednc	72.241PpFednc	92.469PpFednc	92.25PpFednc	> 89.00PpFednc
			15.335PpFednc	3.248PpFednc	49.808PpFednc	53.879PpFednc	92.444PpFednc
			15.230PpFednc	2.165PpFednc	32.973PpFednc	35.712PpFednc	92.330PpFednc
			15.120PpFednc	1.083PpFednc	16.375PpFednc	17.847PpFednc	91.752PpFednc
			15.050PpFednc	0.433PpFednc	6.521PpFednc	7.379PpFednc	88.375PpFednc	--PpFednc	> 79.00PpFednc
		20PpFednc	20.330PpFednc	3.247PpFednc	66.012PpFednc	71.230PpFednc	92.674PpFednc	92.37PpFednc	> 89.00PpFednc
			20.250PpFednc	2.438PpFednc	49.370PpFednc	53.298PpFednc	92.629PpFednc
			20.170PpFednc	1.625PpFednc	32.776PpFednc	35.442PpFednc	92.479PpFednc
			20.090PpFednc	0.813PpFednc	16.333PpFednc	17.809PpFednc	91.713PpFednc
			20.040PpFednc	0.325PpFednc	6.509PpFednc	7.385PpFednc	88.138PpFednc	--PpFednc	> 79.00PpFednc

PpFednc

7. 待机功耗测试

PpFednc

Input VoltagePpFednc	115 V_AC / 60 HzPpFednc	230 V_AC / 50 HzPpFednc
Standby CurrentPpFednc	5V / 0APpFednc
RequirementPpFednc	<75 mWPpFednc

PpFednc

V_IN,ACPpFednc
( V / Hz )PpFednc

P_INPpFednc
( mW )PpFednc

RequirementPpFednc

( mW )PpFednc

115 / 60PpFednc

22.2PpFednc

< 75 mWPpFednc

230 / 50PpFednc

32.5PpFednc

PpFednc

Input VoltagePpFednc

115 V_AC/ 60 HzPpFednc

230 V_AC/ 50 HzPpFednc

Standby CurrentPpFednc

20V / 7.5mAPpFednc

20V / 12.5 mAPpFednc

RequirementPpFednc

Po : 150mW < Pin : 300 mWPpFednc

Po : 250mW < Pin : 500 mWPpFednc

PpFednc

V_IN,ACPpFednc ( V / Hz )PpFednc	VoPpFednc (V)PpFednc	IoPpFednc (mA)PpFednc	P_INPpFednc ( mW )PpFednc	RequirementPpFednc ( mW )PpFednc
115 / 60PpFednc	20PpFednc	7.5PpFednc	251PpFednc	< 300 mWPpFednc
230 / 50PpFednc		7.5PpFednc	276PpFednc	< 300 mWPpFednc
115 / 60PpFednc		12.5PpFednc	361PpFednc	< 500 mWPpFednc
230 / 50PpFednc		12.5PpFednc	383PpFednc	< 500 mWPpFednc

PpFednc

责编：Ricardo

阅读全文，请先

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杂志声明

通嘉PD快充适配器高效能及小型化之氮化镓集成方案

前言

通嘉PD快充解决方案

通嘉PD 65W Demo Board设计范例

1.测试规格

2.原理图

3. PCB_Layout

4. BOM

5. 变压器设计

6. 效率测试

7. 待机功耗测试