Document
TFA5x Series Reverse Blocking Triode Thyristor
Features and Benefits
▪ Exceptional reliability ▪ Small fully-molded SIP package with heatsink mounting for high thermal dissipation and long life ▪ Operating junction temperature to 150°C ▪ VDRM of 700 or 800 V ▪ 7.8 ARMS on-state current ▪ 7 mA typical gate trigger current ▪ Uniform switching ▪ UL Recognized Component (File No.: E118037) (suffix I)
Description
This Sanken reverse blocking triode thyristor is designed for AC power control, providing reliable, uniform switching for half-cycle AC applications. In comparison with other products on the market, the TFA5x series provides increased isolation voltage (1800 VACRMS), guaranteed for up to 1 minute. In addition, commutation dv/dt is improved.
Package: 3-pin SIP (TO-220F)
Applications
▪ Motor control for small tools ▪ Temperature control, light dimmers, electric blankets ▪ General use switching mode power supplies (SMPS)
Not to scale
Typical Applications
M
Single-phase motor control (for example, electric tool)
In-rush current control (for example, SMPS)
28105.02, Rev. 1
TFA5x Series
Selection Guide
Part Number
TFA57(I) TFA57S TFA58(I) TFA58S
Reverse Blocking Triode Thyristor
VDRM (V)
700 700 800 800
UL-Recognized Component
Yes – Yes –
Package
3-pin fully molded SIP with heatsink mount
Packing
50 pieces per tube
Absolute Maximum Ratings
Characteristic Peak Repetitive Off-State Voltage Isolation Voltage Average On-State Current RMS On-State Current Surge On-State Current I2t Value for Fusing Critical Rising Rate of On-State Current Peak Forward Gate Current Peak Forward Gate Voltage Peak Reverse Gate Current Peak Gate Power Dissipation Average Gate Power Dissipation Junction Temperature Storage Temperature Symbol VDRM VISO IT(AV) IT(RMS) f = 60 Hz ITSM I2t di/dt IFGM VFGM VRGM PGM PGM(AV) TJ Tstg Half cycle sine wave, single, non-repetitive f = 50 Hz Value for 50 Hz half cycle sine wave, 1 cycle, ITSM = 80 A IT = IT(RMS) × π, VD = VDRM × 0.5, f ≤ 60 Hz, tgw ≥ 10 μs, tgr ≤ 250 ns, igp ≥ 30 mA (refer to Gate Trigger Circuit diagram) f ≥ 50 Hz, duty cycle ≤ 10% f ≥ 50 Hz, duty cycle ≤ 10% f ≥ 50 Hz f ≥ 50 Hz, duty cycle ≤ 10% TJ < TJ(max) 80 32 50 2.0 10 5.0 5.0 0.5 –40 to 150 –40 to 150 A A2 • s A/μs A V V W W ºC ºC TFA57x TFA58x Notes TJ = –40°C to 150°C, RGREF = 1 kΩ Rating 700 800 1800 5.0 7.8 88 Units V V V A A A
AC RMS applied for 1 minute between lead and case 50 Hz half cycle sine wave, Conduction angle (α) = 180°, continuous operation, TC = 115°C
Thermal Characteristics May require derating at maximum conditions
Characteristic
Package Thermal Resistance (Junction to Case)
Symbol
RθJC For AC
Test Conditions
Value
3.8
Units
ºC/W
Pin-out Diagram
A
Number
Terminal List Table
Name K A G Function Cathode terminal Anode terminal Gate control 1 2 3
G K
1 2 3
All performance characteristics given are typical values for circuit or system baseline design only and are at the nominal operating voltage and an ambient temperature, TA, of 25°C, unless otherwise stated.
Allegro MicroSystems, Inc. 115 Northeast Cutoff Worcester, Massachusetts 01615-0036 U.S.A. 1.508.853.5000; www.allegromicro.com
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TFA5x Series
Reverse Blocking Triode Thyristor
ELECTRICAL CHARACTERISTICS
Characteristics Off-State Leakage Current Reverse Leakage Current On-State Voltage Gate Trigger Voltage Gate Trigger Current Gate Non-trigger Voltage Holding Current Critical Rising Rate of Off-State Voltage Symbol IDRM IRRM VTM VGT IGT VGD IH dv/dt Test Conditions VD = VDRM, TJ = 150°C, RGREF = 1 kΩ VD = VDRM, TJ = 150°C, RGREF = 1 kΩ ITM = 15 A, TC = 25°C VD = 6 V, RL = 10 Ω, TC = 25°C VD = 6 V, RL = 10 Ω, TC = 25°C VD = VDRM × 0.5, RGREF = 1 kΩ, TJ = 125°C RGREF = 1 kΩ, TJ = 25°C VD = VDRM × 0.5, TJ = 125°C, RGREF = 1 kΩ, CGREF = 0.033 μF Min. – – – – – 0.2 – – Typ. – – – – 7 – 15 300 Max. 2.0 2.0 1.5 1.0 15 – – – Unit mA mA V V mA V mA V/μs
Test Circuit 1
Voltage-Current Characteristic
ITM
A
IF VTM (On state)
RGREF G
K
VRRM VR IRRM
IH (Off state) VTM VDRM
CGREF
IDRM VF
Gate Trigger Current
tgr
IR
igp tgw
Allegro MicroSystems, Inc. 115 Northeast Cutoff Worcester, Massachusetts 01615-0036 U.S.A. 1.508.853.5000; www.allegromicro.com
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TFA5x Series
Reverse Blocking Triode Thyristor
Commutation Timing Diagrams
Q4
Supply VAC
A
Q
A = Conduction angle
VGT
VGATE Q
ITSM
On-State Currrent
Q
Allegro MicroSystems, Inc. 115 Northeast Cutoff Worcester, Massachusetts 01615-0036 U.S.A. 1.508.853.5000; www.allegromicro.com
4
TFA5x Series
Reverse Blocking Triode Thyristor
Performance Characteristics at TA = 25°C
100
160 140
TJ = 150°C Half cycle sine wave initial TJ = 125°C A = 10 ms, f = 20 ms
120 ITSM (A)
Surge On-State Current versus Quantity of Cycles
Maximum On-State Current versus Maximum On-State Voltage
IT (max) (A)
10
100 80 60 40 20
1
TJ = 25°C
0
0.6
1.0
1.4
8 7 6
Maximum Average Power Dissipation versus Average On-State Current PT(AV) (W)
1.8 2.2 2.6 VT (max) (V)
3.0
3.4
0 200 18.