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參數(shù)資料
| 型號： | UCC38517 |
| 廠商： | Texas Instruments, Inc. |
| 元件分類： | 基準電壓源/電流源 |
| 英文描述： | ADVANCED PFC/PWM COMBINA CONTROLLERS |
| 中文描述： | 高級式PFC /脈寬調(diào)制COMBINA控制器 |
| 文件頁數(shù)： | 6/39頁 |
| 文件大小： | 725K |
| 代理商： | UCC38517 |
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SLUS517B DECEMBER 2002 REVISED AUGUST 2004
6
www.ti.com
ELECTRICAL CHARACTERISTICS
T
A
= –40
°
C to 105
°
C for the UCC2851x, T
A
= T
J
, VCC = 12 V, R
T
= 156 k
,
R
CT_BUFF
= 10 k
(unless otherwise noted)
zero power
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNITS
Zero power comparator threshold
Measured on VAOUT,
falling edge
0.20
0.33
0.50
V
Zero power comparator hysteresis
Measured on VAOUT,
rising edge
40
90
140
mV
PFC gate driver
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNITS
GT1 pull-up resistance
100 mA
≤
IOUT
≤
200 mA
IOUT = 100 mA
5
12
GT1 pull-down resistance
2
10
GT1 output rise time
CLOAD = 1 nF,
RLOAD = 10
16
25
ns
GT1 output fall time
7
15
Maximum duty cycle
93%
95%
100%
Minimum controllable pulse width
120
150
200
ns
PWM stage undervoltage lockout (UVLO2)
PARAMETER
TEST CONDITIONS
MIN
6.30
TYP
6.75
MAX
7.30
UNITS
PWM turn-on reference
UCC2851X
PWM turn-off threshold
UCC28510
UCC28511
UCC28514
UCC28515
5.3
UCC28512
UCC28513
UCC28516
UCC28517
3.55
V
Hysteresis
UCC28510
UCC28511
UCC28514
UCC28515
1.16
1.45
1.74
UCC28512
UCC28513
UCC28516
UCC28517
2.56
3.20
3.84
PWM stage soft-start
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNITS
μ
A
SS2 charge current
VSENSE = 7.5 V,
VSENSE = 2.5 V,
(UVLO2 = Low, ENABLE = High)
SS2 = 0 V
–7.0
–10.5
–14.0
SS2 discharge current
SS2 = 2.5 V,
6
10
14
mA
Input voltage (VERR)
IVERR = 2 mA,UVLO2 = Low
300
mV
PWM stage duty cycle clamp
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNITS
Maximum duty cycle
D_MAX = 4.15 V
70%
75%
80%
PWM stage pulse-by-pulse current sense
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNITS
Current sense comparator offset voltage
ISENSE2 = 0 V,
measured on VERR
1.35
1.50
1.65
V
1. Ensured by design. Not 100% tested in production.
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