TI-UCC28063A：高效PFC控制器，低EMI设计
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TI-UCC28063A是一款高性能的PFC（Pulse Width Modulation Control）控制器，专为高功率应用设计，特别适用于85VAC到265VAC的宽范围输入电压条件下，如12V至400VDC的直流转换。这款产品在电力因素控制方面表现出色，支持1-或2-相的自然交错（Natural Interleaving™）拓扑，以减少输入滤波器的纹波电流和输出电容的负担，从而提升系统的稳定性和可靠性。
核心特点包括：
1. **先进PFC控制**：UCC28063A通过内置的噪声抑制技术，提高了输入滤波器的性能，有效降低输入浪涌和噪声，确保了系统的高效运行。
2. **强大的驱动能力**：设备配备了1A拉电流和1.8A灌电流的栅极驱动器，支持高负载下的稳定操作，对于100W至800W的功率范围有很好的适应性。
3. **故障保护**：双路故障安全过压保护机制可以防止输出过压，确保系统在电压检测异常时的安全。
4. **简化设计**：无传感器电流整形技术的应用，简化了电路板布局，并提高了整个系统的能源转换效率。
5. **广泛的应用领域**：UCC28063A适用于各种电子设备，如游戏机、数字信号处理器（DSP）应用的数模转换机顶盒、家用音频系统、液晶电视等，确保了高效率和低噪音输出。
6. **温度适应性**：器件工作温度范围宽广，从-40°C至125°C，适合严苛的工业环境。
7. **小型化封装**：16引脚SOIC封装不仅节省空间，还降低了电磁干扰（EMI）滤波器的尺寸要求。
8. **集成保护功能**：内置欠压和压降处理能力，增强了器件的稳健性和整体系统稳定性。
与UCC28063相比，UCC28063A在某些特性上有所删减，但总体上保持了高度一致性和竞争力，是工业级高功率转换器的理想选择。对于希望进行高性能电源解决方案设计的工程师而言，这款产品提供了强大且易于集成的工具。
UCC28063A
ZHCSDH6B –DECEMBER 2014–REVISED MARCH 2015
www.ti.com.cn
Electrical Characteristics (接接下下页页)
At VCC = 16 V, AGND = PGND = 0 V, VINAC = 3 V, VSENSE = 6 V, HVSEN = 3 V, PHB = 5 V, R
TSET
= 133 kΩ, all voltages
are with respect to GND, all outputs unloaded, −40 °C < T
J
= T
A
< 125 °C, and currents are positive into and negative out of
the specified terminal, unless otherwise noted.
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
CS current-limit response From CS exceeding threshold−0.05 V to
60 100
time
(2)
GDx dropping 10%
ns
CS blanking time From GDx rising and falling edges 100
VINAC INPUT
I
VINAC
VINAC input bias current, VINAC = 2 V
±0.03 ±0.5 µA
above brownout
V
BODET
VINAC brownout detection VINAC falling
1.33 1.39 1.44 V
threshold
t
BODLY
VINAC brownout filter time VINAC below the brownout detection
340 440 540 ms
threshold for the brownout filter time
V
BOHYS
VINAC brownout threshold VINAC rising
30 62 75 mV
hysteresis
I
BOHYS
VINAC brownout hysteresis VINAC = 1 V for > t
BODLY
1.6 2 2.5 µA
current
V
DODET
VINAC dropout detection VINAC falling
0.315 0.35 0.38 V
threshold
t
DODLY
VINAC dropout filter time VINAC below the dropout detection
3.5 5 7 ms
threshold for the dropout filter time
V
DOCLR
VINAC dropout clear threshold VINAC rising 0.67 0.71 0.75 V
PULSE-WIDTH MODULATOR
K
T
On-time factor, phases A and B VSENSE = 5.8 V
(4)
3.6 4.0 4.4
µs/V
K
TS
On-time factor, single-phase, A VSENSE = 5.8 V, PHB = 0 V
(4)
7.2 8.0 8.9
Phase B to phase A on-time VSENSE = 5.8 V
±2% ±6%
matching error
Zero-crossing distortion COMP = 0.25 V, VINAC = 1 V 1.2 2 2.8
µs
correction additional on time
COMP = 0.25 V, VINAC = 0.1 V 12.6 20 29
V
PHBF
PHB threshold falling, to single- To GDB output shutdown, VINAC = 1.5 V
0.7 0.8 0.9
phase operation
V
V
PHBR
PHB threshold rising, to two- To GDB output running, VINAC = 1.5 V
0.9 1 1.1
phase operation
T
MIN
Minimum switching period R
TSET
= 133 kΩ
(4)
1.7 2.2 3
µs
T
START
PWM restart time ZCDA = ZCDB = 2 V
(5)
165 210 265
THERMAL SHUTDOWN
T
J
Thermal shutdown temperature Temperature rising
(6)
160
°C
T
J
Thermal restart temperature Temperature falling
(6)
140
(4) Gate drive on-time is proportional to (V
COMP
– 0.125 V). The on-time proportionality factor, K
T
, scales linearly with the value of R
TSET
and is different in two-phase and single-phase modes. The minimum switching period is proportional to R
TSET
.
(5) An output on-time is generated at both GDA and GDB if both ZCDA and ZCDB negative-going edges are not detected for the restart
time. In single-phase mode, the restart time applies for the ZCDA input and the GDA output.
(6) Thermal shutdown occurs at temperatures higher than the normal operating range. Device performance above the normal operating
temperature is not specified or assured.
8 版权 © 2014–2015, Texas Instruments Incorporated
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