HA16666P/FP 600kHz PWM Controlled Switching Regulator Description The HA16666P/FP is a voltage mode PWM (pulse width modulation) control IC for switching regulator control. It can drive a power MOS FET efficiently on 600 kHz. Its stanby current is 0.3 mA (max), and it is used as the primary control power supply. Functions • • • • • • • • • +5 V reference voltage circuit Triangular waveform oscillator PWM comparator Output circuit (Totem pole output) Overcurrent protection circuit (with one-pulselatch mode) Undervoltage lockout protectoin circuit Soft start and quick shutdown function Remote control function Comparator with internal 1.3 V reference voltage Features • High-speed switching; tr = 80 ns (15 V amplitude) tf = 40 ns (15 V amplitude) • Low power dissipation; 0.3 mA max in standby state 12 mA max in operation state (V IN = 15 V) • Dual-slope highly accurate dead-band duty setup circuit; Setup accuracy Du = ±3% (max) • Wide output pulse width control range; 0 to 75% HA16666P/FP • Undervoltage lockout protection; VIN high threshold voltage 10 V typ VIN low threshold voltage 8 V typ • Two input threshold voltage for overcurrent protection cmparator; fixed voltage (1.3 V) variable voltage • Double pulse output protection by overcurrent protection circuit with one-pulse latch mode • Wide input supply voltage range; VCC = 11 to 40 V Ordering Information Type Package HA16666P DP-16 HA16666FP FP-16DA 2 HA16666P/FP Pin Arrangement E/I 1 16 N.INV + ST 2 15 INV – CT 3 14 CS RT1 4 13 Vref RT2 5 12 VIN OSC Out 6 11 RM GND 7 10 OUT N.C 8 9 N.C (Top View) Pin Functions Pin No. Symbol Descreption 1 E/I Error input 2 ST Soft start 3 CT Timing capacitance 4 RT1 Timing resistor (rise section) 5 RT2 Timing resistor (fall section) 6 OSC Out Triangular waveform oscillator 7 GND Ground 8 N.C No connect 9 N.C No connect 10 OUT Pulse output 11 RM Remote control 12 VIN Power supply voltage 13 Vref Reference voltage (5 V) output 14 CS Comparator input (–) with reference voltage (1.3 V) 15 16 INV – Comparator input (–) for overcurrent protection + N.INV Comparator input (+) for overcurrent protection 3 HA16666P/FP Block Diagram E/I ST 1 2 + + Overcurrent detector + PWM comparator – – 16 N.INV + 15 INV – 14 CS 13 Vref 12 VIN 11 RM 10 OUT 9 N.C S CT RT1 RT2 4 3 R S/R Flip-flop – Comparator 4 5 OSC Out 6 GND 7 N.C 8 Triangular waveform oscillator Reference voltage Undervoltage lockout protection Output driver + 1.3 V 5V HA16666P/FP Absolute Maximum Ratings (Ta = 25°C) Rating Item Symbol HA16666P HA16666FP Unit Power supply voltage VIN +40 +40 V DC I O(DC) 100 100 Peak I O(peak) 500*1 500* Error input VEI Vref Vref V OSC input voltage VOSC VIN – 3VBE VIN – 3VBE V CS input voltage VCS Vref Vref V RM input voltage VRM VIN VIN V RT2 input current I R2 1 1 mA RT1 input current I R1 1 Output current (Push-pull) mA 1 mA 1 2 680* mA 3 Power dissipation PT 680* mW Operation temperature Topr –20 to +85 –20 to +85 °C Storage temperature Tstg –55 to +125 –55 to +125 °C Notes: 1. Value at 300 ns of switiching time 2. Value at Ta ≤ 45°C. If Ta > 45°C, derated by 8.3 mW/°C 3. Value under the condition of 40 mm × 40 mm × 0.8 t ceramics board epoxy board Electrical Characteristics (VIN = 15 V, Ta = 25°C, fosc = 300 kHz) Item Voltage reference Triangular waveform oscillator Symbol Min Typ Max Unit Test Condition Output voltage Vref 4.75 5.00 5.25 V no load Line regulation Line — 50 100 mV VIN = 11 to 40 V Load regulation Load — 9 20 mV I O = 0 to 10 mA Temperature stability VRTC — +60 — ppm/°C no load Short circuit current I OS 10 35 — mA Vref = 0 V Maximum frequency f max 600 — — kHz CT = 150 pF Minimum frequency f min — — 1 kHz CT = 0.15 µF Frequency accuracy f der –10 0 +10 % Voltage stability fT — 1 — % 11 V≤ VIN ≤ 40 V Temperature coefficient of frequency fi — 2 — % –20°C ≤ Ta ≤ +85°C 5 HA16666P/FP Electrical Characteristics (VIN = 15 V, Ta = 25°C, fosc = 300 kHz) (cont) Item Symbol Min Typ Max Unit Maximum duty cycle Du 75 — — % Input bias current IB –2 — — µA Pin 1 Low-level threshold voltage VOSCL — 1.5 — V Pin 1 High-level threshold voltage VOSCH — 2.5 — V Pin 1 Dead-band duty accuracy ∆ Du — ±1 ±3 % Dead-band duty input voltage stability DT — 1 — % 11 V≤ VIN ≤ 40 V Temperature coefficient of dead-band duty DuT — 1 — % –20°C ≤ Ta ≤ +85°C Overcurrent detector Input bias current I B1 –2 — — µA Pin 15, 16 Common-mode input voltage range VCM1 0 to VIN – 3 — — V Pin 15, 16 Comparator Input bias current I B2 — 5 13 µA VCS = 5 V Input threshold voltage Vth 1.2 1.3 1.4 V Input voltage range VCS 0 — Vref V Input current to remote control pin I RM — — 1.5 mA Input high-voltage VINH 1 — — V Input low-voltage VINL — — 0.4 V High-level threshold voltage VTHH 9 10 11 V Low-level threshold voltage VTHL 7 8 9 V Hysteresis width Hys 1.5 2.0 2.8 V Output low-level VL — 0.7 1.4 V I O (SINK) = 10 mA Output high-level VH VIN – 2.2 — — V I O (SOURCE) = 10 mA Output rise time tr — 80 150 ns Note 1 Output fall time tf — 40 100 ns Note 1 Standby current I CS — 0.15 0.3 mA Note 1 Operation current I CL — 8 12 mA Note 1 PWM comparator Remote controller Undervoltage lockout protector Output driver Total current Note: 6 1. Measurement conditions of ICS, I CL, tr , t f are defined as following diagram. Test Condition VRM = 5 V HA16666P/FP 9.1 kΩ Vref A VIN EI OSC O/P Out RT2 2SD667 15 Ω 2SB647 CT RT1 GND 330 pF 9.1 kΩ 2,200 pF hFE of 2SD667 is defined as 60 min and 200 max. Waveform Timing VTHH VTHL V IN Remote control input – INV -N.INV + Overcurrent detection signal Overcurrent detection threshold E/I Triangular waveform Output Dead-band area 7 HA16666P/FP Characteristic Curves Vref Output Voltage vs. Temperature Reference Voltage vs. Input Voltage 6.0 Reference Output Voltage Vref (V) Reference Output Voltage Vref (V) 5.10 5.00 4.90 4.80 –30 0 50 Ambient Temperature Ta (°C) 100 Soft Start Time (sec) 0.6 0.4 0.2 Vref HA16666 ST Cs Pulse Duty Cycle (%) Ta = 25°C 0.8 3.0 2.0 1.0 70 60 50 40 30 10 0 0.2 0.3 0.4 0.5 0.6 Error Input Voltage VE.I / ref Voltage 20 40 60 80 100 Soft Start Capacitor Capacitance Cs (µF) –10 8 0 20 40 60 80 Ambient Temperature Ta (°C) Dead Band Duty vs. Temperature 70 Dead-band duty (%) ∆ f/f (%) CT = 330 pF RT1 = R T2 = 9.1 kΩ f ≅ 300 kHz 0 –20 40 Pulse Duty Cycle vs. Error Input Voltage/Set Voltage in PWM Comparator 100 VIN = 15 V 90 f ≅ 300 kHz Ta = 25°C 80 ∆f/f vs. Temperature +10 10 20 30 Input Voltage VIN (V) 20 51 k 0 4.0 0 Soft Start Time vs. Soft Start Capacitance 1.0 Ta = 25°C 5.0 60 CT = 330 pF RT1 = R T2 = 9.1 kΩ f ≅ 300 kHz 50 40 –20 0 20 40 60 Ambient Temperature Ta (°C) 80 HA16666P/FP VIN Bias Point 10 Back-up supply voltage C T = 330 pF R T1 = RT2 = 9.1 k Ω IIN (mA) VB RB I IN 12 5 Quick shutdown area Soft start area HA16666 7 Under voltage lockout 0 + 1 F D667 10 B647 15 Ω 2200 pF 1/R B 8 10 20 30 40 VIN (V) 9 HA16666P/FP Frequency vs. RT1, RT2 Dependence 800 k Formula for the oscillation frequency HA16666 Vref CT OSC R T1 R T2 Out CT R T2 CT 120 pF RT1 180 pF 100 k 430 pF HA16666 summary formula of the oscillation ferquency log (f) ≈ a × log (RT1) + b The following table show empirical values of a and b for different values of CT. CT a b 180pF −0.50 7.58 330pF −0.61 7.86 1000pF −0.75 8.09 0.01µF −0.86 7.57 0.15µF −0.86 6.45 Frequency f (Hz) (= RT2) 1000 pF 3300 pF 10 k 0.01 µ F 1k 0.033 µF 5 10 20 R T1 = R T2 (k Ω) 10 0.15 µ F 30 40 50 AC Input C4 0.047 1 E/I 3 CT 12 4 RT1 5 RT2 11 10 9 C2 0.01 OSC O/P GND N.C 6 7 8 RM OUT N.C R3 R C R6 50 k 3305 p 9.15 k 9.1 k R4 10 k ST 2 13 Vref VIN R IN 220 k HA16666P/FP 14 CS 15 C1 680 N.INV INV + — 16 + B647 D667 C3 10 + R12 0.2 R2 D2 10/1 W C8 1,000 p K552 R13 330 D4 D3 R14 1k + R9 R10 Output 1 k PHOTO COUPLER R11 1k Unit R: Ω C: F SHUNT REGULATOR HA17431P C6 R8 1k + C7 HA16666P/FP System Connection Example Over current protection; Resistance sensing method RFI filter 11 AC Input RFI filter 12 C1 680 µ R14 470 1 C4 0.047 µ RT1 4 CT 3 5 RT2 9 C2 0.01 µ OSC O/P GND N.C 6 7 8 RM OUT N.C 10 R 13 3.3 k 11 R3 R C R6 50 k 3305 p 9.15 k 9.1 k R4 10 k ST 2 12 Vref VIN 13 C9 470 p HA16666P/FP CS N.INV INV + – D6 14 E/I R IN 220 k C8 1,000 p 15 16 R11 R12 + B647 D667 C3 10 µ + K552 R2 D2 10/1 W D4 D3 C.T + R9 R10 Output 1 k PHOTO COUPLER R11 1k Unit R: Ω C: F SHUNT REGULATOR HA17431P C6 R8 1k + C7 HA16666P/FP Over current protection; Current transformer method AC Input C1 680 µ R14 470 C4 0.047 µ 1 E/I 3 2 Vref VIN 4 RT1 5 RT2 10 R 13 3.3 k 9 C2 0.01 µ OSC O/P GND N.C 6 7 8 RM OUT N.C 11 R3 R C R6 50 k 3305 p 9.15 k 9.1 k R4 10 k CT ST CS N.INV INV + – 13 C9 470 p HA16666P/FP 14 D6 12 R IN 220 k C8 1,000 p 15 16 R11 R12 + C.T B647 D667 C3 10 µ + K552 R2 D2 10/1 W D4 D3 C6 + + R9 R10 Output 1 k PHOTO COUPLER R11 1k Unit R: Ω C: F SHUNT REGULATOR HA17431P R8 1k C7 HA16666P/FP Over current protection; Current transformer method RFI filter 13 HA16666P/FP Package Dimensions Unit: mm 19.20 20.00 Max 6.30 9 1 7.40 Max 16 8 1.3 0.48 ± 0.10 7.62 2.54 Min 5.06 Max 2.54 ± 0.25 0.51 Min 1.11 Max + 0.13 0.25 – 0.05 0° – 15° Hitachi Code JEDEC EIAJ Mass (reference value) DP-16 Conforms Conforms 1.07 g Unit: mm 10.06 10.5 Max 9 1 8 1.27 *0.42 ± 0.08 0.40 ± 0.06 0.10 ± 0.10 0.80 Max *0.22 ± 0.05 0.20 ± 0.04 2.20 Max 5.5 16 0.20 7.80 +– 0.30 1.15 0° – 8° 0.70 ± 0.20 0.15 0.12 M *Dimension including the plating thickness Base material dimension 14 Hitachi Code JEDEC EIAJ Mass (reference value) FP-16DA — Conforms 0.24 g HA16666P/FP Cautions 1. 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