100V High Efficiency PSR/SSR Flyback Controller
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- Parameters
- Features
- Description
| Part number |
SQ33604AFBP |
| Channel(#) |
1 |
| Vin (min) (V) |
8.5 |
| Vin (max) (V) |
75 |
| Topology |
PSR/SSR flyback |
| Switching frequency (min)(kHz) |
100 |
| Switching frequency (max)(kHz) |
500 |
| Vout (min) (V) |
Programmable |
| Vout2 (min)(V) |
|
| Vout (max) (V) |
Programmable |
| Vout2 (max )(V) |
|
| Vref accuracy (±%) |
1.5 |
| Vout accuracy(±%) |
|
| Control mode |
Peak current mode |
| Duty cycle (max)(%) |
83 |
| Operation mode |
PWM/PFM |
| Iq (typ) (uA) |
1250 |
| Features |
HV startup,PSR/SSR,Auto-recovery input UVP,Auto-recovery OCP,Auto-recovery SCP,Auto-recovery OVP,Auto-recovery OTP |
| Package |
MSOP10 |
| Operating temperature range(°C) |
-40 to 125 |
| Functional safety category |
|
- Integrated 100V HV Start-up circuit
- Flexible Topology：
- Primary-Side Regulated (PSR) Flyback (250kHz/400kHz Selectable)
- Secondary-Side Regulated (SSR) Flyback (Programmable Frequency)
- Precision Voltage Reference
- Output Diode Compensation in PSR Mode
- Source/Sink=0.5A/0.9A GATE Drivers
- Programmable Soft-start
- Programmable Line Under Voltage Lockout (UVLO) with Adjustable Hysteresis
- External Programmable Thermal Shutdown
- OLP compensation for wide-input range
- Cycle-by-Cycle Current Sense Limit
- Frequency Modulation for EMI reduction
- Hiccup Protection for OLP, SCP, OVP and Thermal Shutdown
The SQ33604A is a fully-featured PWM controller integrated high voltage start-up circuit that operates over a wide input range up to 100V.
The SQ33604A adopts current mode, quasi constantfrequency control to avoid sub-harmonic oscillation with no need of slope compensation. The SQ33604A is specifically designed for both low cost, small size, high efficiency isolated solution with primary-side regulates (PSR) Flyback and Secondary-side regulates (SSR) Flyback application. Additional features include precision reference, output diode Compensation compensation (in PSR), over-voltage protection (in PSR) , line undervoltage lockout, cycle by cycle current limit, frequency modulation, soft-start, external programmable thermal shutdown and internal OTP.
The SQ33604A is available in a MSOP10 package.
Evaluation Board
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Photo of evaluation board
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Photo of evaluation board
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Photo of evaluation board
The EVB_SQ33604AFBP is intended for evaluating 100V Current Mode PWM Controller
